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Dr. Alessandra Mobili
Università Politecnica delle Marche, department SIMAU

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Research Keywords & Expertise

0 Concrete
0 Material Characterisation
0 Mortar
0 geopolymers
0 Waste and by-product

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Mortar
Concrete
geopolymers
alkali activated materials
Durability of Concrete

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Journal article
Published: 03 March 2021 in Construction and Building Materials
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Carbon-based fillers from industrial wastes and commercial ones were compared to improve the properties of lime-based mixes. As commercial fillers, graphene nanoplatelets and activated carbon were used, whereas as industrial wastes a char obtained by the gasification of biomasses and a used foundry sand were chosen. Carbon-based wastes were found to be a good cost-effective alternative to commercial carbon based fillers to increase the compressive strength (of about 25%) and to reduce water capillary absorption (of about 50%) thanks to the paste refinement; to enhance depollution capacity (of about 25%) and increase both electrical conductivity (up to 65%) and electromagnetic shielding effectiveness (of about 6%) of the hardened compounds thanks to the carbon content.

ACS Style

Alessandra Mobili; Alberto Belli; Chiara Giosuè; Mattia Pierpaoli; Luca Bastianelli; Alida Mazzoli; Maria Letizia Ruello; Tiziano Bellezze; Francesca Tittarelli. Mechanical, durability, depolluting and electrical properties of multifunctional mortars prepared with commercial or waste carbon-based fillers. Construction and Building Materials 2021, 283, 122768 .

AMA Style

Alessandra Mobili, Alberto Belli, Chiara Giosuè, Mattia Pierpaoli, Luca Bastianelli, Alida Mazzoli, Maria Letizia Ruello, Tiziano Bellezze, Francesca Tittarelli. Mechanical, durability, depolluting and electrical properties of multifunctional mortars prepared with commercial or waste carbon-based fillers. Construction and Building Materials. 2021; 283 ():122768.

Chicago/Turabian Style

Alessandra Mobili; Alberto Belli; Chiara Giosuè; Mattia Pierpaoli; Luca Bastianelli; Alida Mazzoli; Maria Letizia Ruello; Tiziano Bellezze; Francesca Tittarelli. 2021. "Mechanical, durability, depolluting and electrical properties of multifunctional mortars prepared with commercial or waste carbon-based fillers." Construction and Building Materials 283, no. : 122768.

Journal article
Published: 23 December 2020 in Applied Sciences
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Structural health monitoring to assess the safety, durability and performance of structures can be performed by non-destructive methods such as the measurement of impedance in self-sensing cement-based elements. Cement-based materials, like mortars and concretes, generally have high electrical resistivity but the addition of carbon-based fillers and fibres decreases their electrical resistivity and thus enhances their self-sensing capabilities. In this study, two waste carbon-based fillers, namely, used foundry sand and gasification char were compared to commercial graphene nanoplatelets and used to produce self-sensing cement mortars, both with and without recycled or virgin carbon fibres. The mortars were tested in terms of their mechanical and electrical properties as well as their propensity to capillary water absorption. The results demonstrate that gasification char alone is the best carbonaceous waste for decreasing the electrical resistivity (−42%) and water absorption (−17%) of mortars, while their compressive strength remains unaltered. Moreover, although there is a slight reduction in compressive strength and an increase in water suction when gasification char is coupled with fibres, the combination of fillers and fibres has a synergistic effect in decreasing mortars’ electrical resistivity, especially when recycled carbon fibres are used (−80%).

ACS Style

Alessandra Mobili; Chiara Giosuè; Tiziano Bellezze; Gian Marco Revel; Francesca Tittarelli. Gasification Char and Used Foundry Sand as Alternative Fillers to Graphene Nanoplatelets for Electrically Conductive Mortars with and without Virgin/Recycled Carbon Fibres. Applied Sciences 2020, 11, 50 .

AMA Style

Alessandra Mobili, Chiara Giosuè, Tiziano Bellezze, Gian Marco Revel, Francesca Tittarelli. Gasification Char and Used Foundry Sand as Alternative Fillers to Graphene Nanoplatelets for Electrically Conductive Mortars with and without Virgin/Recycled Carbon Fibres. Applied Sciences. 2020; 11 (1):50.

Chicago/Turabian Style

Alessandra Mobili; Chiara Giosuè; Tiziano Bellezze; Gian Marco Revel; Francesca Tittarelli. 2020. "Gasification Char and Used Foundry Sand as Alternative Fillers to Graphene Nanoplatelets for Electrically Conductive Mortars with and without Virgin/Recycled Carbon Fibres." Applied Sciences 11, no. 1: 50.

Review
Published: 21 December 2020 in Applied Sciences
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This paper aims at analyzing the state-of-the-art techniques to measure electrical impedance (and, consequently, electrical resistivity) of mortar/concrete elements. Despite the validity of the concept being widely proven in the literature, a clear standard for this measurement is still missing. Different methods are described and discussed, highlighting pros and cons with respect to their performance, reliability, and degree of maturity. Both monitoring and inspection approaches are possible by using electrical resistivity measurements; since electrical resistivity is an important indicator of the health status of mortar/concrete, as it changes whenever phenomena modifying the conductivity of mortar/concrete (e.g., degradation or attacks by external agents) occur, this review aims to serve as a guide for those interested in this type of measurements.

ACS Style

Gloria Cosoli; Alessandra Mobili; Francesca Tittarelli; Gian Marco Revel; Paolo Chiariotti. Electrical Resistivity and Electrical Impedance Measurement in Mortar and Concrete Elements: A Systematic Review. Applied Sciences 2020, 10, 9152 .

AMA Style

Gloria Cosoli, Alessandra Mobili, Francesca Tittarelli, Gian Marco Revel, Paolo Chiariotti. Electrical Resistivity and Electrical Impedance Measurement in Mortar and Concrete Elements: A Systematic Review. Applied Sciences. 2020; 10 (24):9152.

Chicago/Turabian Style

Gloria Cosoli; Alessandra Mobili; Francesca Tittarelli; Gian Marco Revel; Paolo Chiariotti. 2020. "Electrical Resistivity and Electrical Impedance Measurement in Mortar and Concrete Elements: A Systematic Review." Applied Sciences 10, no. 24: 9152.

Journal article
Published: 16 September 2020 in Applied Sciences
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The possibility of producing high-volume fly ash (HVFA) recycled aggregate concrete represents an important step towards the development of sustainable building materials. In fact, there is a growing need to reduce the use of non-renewable natural resources and, at the same time, to valorize industrial by-products, such as fly ash, that would otherwise be sent to the landfill. The present experimental work investigates the physical and mechanical properties of concrete by replacing natural aggregates and cement with recycled aggregates and fly ash, respectively. First, the mechanical properties of four different mixtures have been analyzed and compared. Then, the effectiveness of recycled aggregate and fly ash on reducing carbonation and chloride penetration depth has been also evaluated. Finally, the corrosion behavior of the different concrete mixtures, reinforced with either bare or galvanized steel plates, has been evaluated. The results obtained show that high-volume fly ash (HVFA) recycled aggregate concrete can be produced without significative reduction in mechanical properties. Furthermore, the addition of high-volume fly ash and the total replacement of natural aggregates with recycled ones did not modify the corrosion behavior of embedded bare and galvanized steel reinforcement.

ACS Style

Valeria Corinaldesi; Jacopo Donnini; Chiara Giosué; Alessandra Mobili; Francesca Tittarelli. Durability Assessment of Recycled Aggregate HVFA Concrete. Applied Sciences 2020, 10, 6454 .

AMA Style

Valeria Corinaldesi, Jacopo Donnini, Chiara Giosué, Alessandra Mobili, Francesca Tittarelli. Durability Assessment of Recycled Aggregate HVFA Concrete. Applied Sciences. 2020; 10 (18):6454.

Chicago/Turabian Style

Valeria Corinaldesi; Jacopo Donnini; Chiara Giosué; Alessandra Mobili; Francesca Tittarelli. 2020. "Durability Assessment of Recycled Aggregate HVFA Concrete." Applied Sciences 10, no. 18: 6454.

Original research article
Published: 26 August 2020 in Frontiers in Materials
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A new generation of smart building materials, able to passively improve the indoor environment and the comfort of occupants owing to their interaction with the surrounding environment, can be addressed. This paper investigates the use of three highly porous aggregates to manufacture hydraulic lime-based multifunctional mortars to be used as indoor finishes. The same water/binder ratio was used for each mortar mix, and conventional calcareous sand was totally replaced by volume with zeolite, silica gel, and activated carbon. Nanosized titanium dioxide (TiO2) was added to award a photocatalytic behavior under UV radiation to the mortars. Results show that, as expected, when highly porous aggregates are used, mortars absorb more water by capillary suction. However, even though the mortars manufactured with lightweight aggregates have a lower density, the mechanical behavior of zeolite and activated carbon mortars is comparable or even higher than that of sand mortars, thanks to an optimum interfacial transition zone (ITZ) between the binder paste and the aggregate. The photocatalytic activity, in terms of photocatalytic NOx degradation efficiency and selectivity of unwanted produced NO2, results to be optimal when silica gel-based mortar is tested. Additionally, the thermal-insulation properties are enhanced up to 40% by using all the unconventional aggregates.

ACS Style

Chiara Giosuè; Mattia Pierpaoli; Alessandra Mobili; Maria Letizia Ruello; Francesca Tittarelli. Multifunctional Lightweight Mortars for Indoor Applications to Improve Comfort and Health of Occupants: Thermal Properties and Photocatalytic Efficiency. Frontiers in Materials 2020, 7, 1 .

AMA Style

Chiara Giosuè, Mattia Pierpaoli, Alessandra Mobili, Maria Letizia Ruello, Francesca Tittarelli. Multifunctional Lightweight Mortars for Indoor Applications to Improve Comfort and Health of Occupants: Thermal Properties and Photocatalytic Efficiency. Frontiers in Materials. 2020; 7 ():1.

Chicago/Turabian Style

Chiara Giosuè; Mattia Pierpaoli; Alessandra Mobili; Maria Letizia Ruello; Francesca Tittarelli. 2020. "Multifunctional Lightweight Mortars for Indoor Applications to Improve Comfort and Health of Occupants: Thermal Properties and Photocatalytic Efficiency." Frontiers in Materials 7, no. : 1.

Journal article
Published: 13 August 2020 in Applied Sciences
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Common alkali-activated materials (AAMs) are usually manufactured with highly alkaline solutions. However, alkaline solutions are dangerous for workers who must wear gloves, masks, and glasses when handling them. This issue makes common (or two-part) AAMs not user-friendly and problematic for bulk production if no safety procedures are followed. In this paper, the possibility of manufacturing alkali-activated pastes and mortars without alkaline solution is investigated. These innovative one-part AAMs have been prepared with metakaolin as the aluminosilicate precursor, potassium-rich biomass ash as the alkaline activator, and water. AAMs have been prepared by varying the K/Al molar ratio: pastes have been studied in terms of reaction kinetics, through isothermal calorimetry, and mortars have been tested in terms of mechanical compressive strength. Results show that the K/Al molar ratio governs both the reaction kinetics and the mechanical strength of these innovative materials. The highest compressive strength is obtained when the K/Al ratio is equal to 2.5 and the water/solid ratio is equal to 0.49. If biomass ash is heated at 700 °C to decompose the calcium carbonate, its reactivity and the final compressive strength increase.

ACS Style

Alessandra Mobili; Francesca Tittarelli; Hubert Rahier. One-Part Alkali-Activated Pastes and Mortars Prepared with Metakaolin and Biomass Ash. Applied Sciences 2020, 10, 5610 .

AMA Style

Alessandra Mobili, Francesca Tittarelli, Hubert Rahier. One-Part Alkali-Activated Pastes and Mortars Prepared with Metakaolin and Biomass Ash. Applied Sciences. 2020; 10 (16):5610.

Chicago/Turabian Style

Alessandra Mobili; Francesca Tittarelli; Hubert Rahier. 2020. "One-Part Alkali-Activated Pastes and Mortars Prepared with Metakaolin and Biomass Ash." Applied Sciences 10, no. 16: 5610.

Journal article
Published: 06 April 2020 in Manufacturing Review
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This paper reports a study on 8 unconventional hydraulic lime-based mortars able to improve indoor air quality by acting as passive systems. Mortars have been prepared with commercial sand or highly adsorbent materials as aggregates with/without TiO2 as photocatalytic agent, to test also the decomposition of airborne pollutants. Mechanical properties, hygrometric behavior, inhibition of growth of molds and depollution properties have been tested. Despite using porous materials (zeolite and activated carbon), in mortars with unconventional aggregates, compressive strength is higher than in sand-based ones, with a more than double higher water vapor permeability. Zeolite-based mortars have the highest moisture buffering capacity followed by silica gel- and activated carbon-based mortars (1.5–2 times higher than reference, respectively, because of the high porosity of unconventional aggregates). Sand-based mortars show optimum inhibitory capacity against fungal growth. Concerning unconventional aggregates, silica gel mortars have good inhibitory capacity, whereas zeolite and activated carbon give to mortars an optimum substrate for molds. Mortars with unconventional aggregates as silica gel remove more than 80% of tracer pollutant after 2 h of test, whereas zeolite-based mortars remove the 65% of it after 120 min. TiO2 enhances depollution properties as photocatalytic oxidation agent when the mortar is close to saturation.

ACS Style

Chiara Giosuè; Alessandra Mobili; Barbara Citterio; Francesca Biavasco; Maria Letizia Ruello; Francesca Tittarelli. Innovative hydraulic lime-based finishes with unconventional aggregates and TiO2 for the improvement of indoor air quality. Manufacturing Review 2020, 7, 13 .

AMA Style

Chiara Giosuè, Alessandra Mobili, Barbara Citterio, Francesca Biavasco, Maria Letizia Ruello, Francesca Tittarelli. Innovative hydraulic lime-based finishes with unconventional aggregates and TiO2 for the improvement of indoor air quality. Manufacturing Review. 2020; 7 ():13.

Chicago/Turabian Style

Chiara Giosuè; Alessandra Mobili; Barbara Citterio; Francesca Biavasco; Maria Letizia Ruello; Francesca Tittarelli. 2020. "Innovative hydraulic lime-based finishes with unconventional aggregates and TiO2 for the improvement of indoor air quality." Manufacturing Review 7, no. : 13.

Journal article
Published: 26 February 2020 in Cement and Concrete Composites
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The paper aims to provide a comprehensive study on the compositional optimization of high-conductive multifunctional fiber-reinforced cement mortars (FRCMs). Therefore, the effects of three different fiber types: virgin carbon fibers (VCFs), recycled carbon fibers (RCFs), and brass-plated steel fibers (BSFs), added at a broad range of concentrations, as 0.05%, 0.1%, 0.2%, 0.4%, 0.8%, 1.2%, and 1.6% by volume, on the mechanical, electrical and durability properties of FRCMs have been compared. The results showed that RCFs increase the flexural and tensile splitting strength up to 100%, whereas BSFs improve the compressive strength by 38%. Moreover, the fibers decrease both the capillary water absorption and the drying shrinkage by 39%. Electrical conductivity tests show that RCFs decrease the electrical resistivity of mortars up to one order of magnitude, in addition to a percolation threshold between 0.1 and 0.2 vol%.

ACS Style

Alberto Belli; Alessandra Mobili; Tiziano Bellezze; Francesca Tittarelli. Commercial and recycled carbon/steel fibers for fiber-reinforced cement mortars with high electrical conductivity. Cement and Concrete Composites 2020, 109, 103569 .

AMA Style

Alberto Belli, Alessandra Mobili, Tiziano Bellezze, Francesca Tittarelli. Commercial and recycled carbon/steel fibers for fiber-reinforced cement mortars with high electrical conductivity. Cement and Concrete Composites. 2020; 109 ():103569.

Chicago/Turabian Style

Alberto Belli; Alessandra Mobili; Tiziano Bellezze; Francesca Tittarelli. 2020. "Commercial and recycled carbon/steel fibers for fiber-reinforced cement mortars with high electrical conductivity." Cement and Concrete Composites 109, no. : 103569.

Journal article
Published: 20 February 2020 in Construction and Building Materials
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There is an increasing interest towards the development of alternative binders for the manufacture of sustainable mortars and concretes. Ordinary Portland cement (OPC) is the most commonly used material in construction, even if its production process is highly polluting. Both calcium sulfoaluminate (CSA) and alkali-activated cements (AAC) are potential alternative binders to be used in both structural (R3 class, with Rc ≥ 25 MPa) and non-structural applications (R1 and R2 classes, with Rc ≥ 10 MPa and Rc ≥ 15 MPa, respectively) according to UNI EN 1504-3. This paper reports the hydration mechanisms and the evolution of porosity of OPC-, CSA- and AAC-based binders. The properties of fresh and hardened mortars, belonging to the above-mentioned mechanical strength classes, were evaluated and compared with particular emphasis on durability properties in terms of capillary water absorption, drying shrinkage, and resistance to sulfate attack. The results show that CSA-based mortars exhibit the lowest drying shrinkage due to their highest elasticity modulus. AAC mortars are characterized by the highest water vapor permeability and the lowest capillary water absorption for the highest presence of large pores (>3000 nm).

ACS Style

Alessandra Mobili; Antonio Telesca; Milena Marroccoli; Francesca Tittarelli. Calcium sulfoaluminate and alkali-activated fly ash cements as alternative to Portland cement: study on chemical, physical-mechanical, and durability properties of mortars with the same strength class. Construction and Building Materials 2020, 246, 118436 .

AMA Style

Alessandra Mobili, Antonio Telesca, Milena Marroccoli, Francesca Tittarelli. Calcium sulfoaluminate and alkali-activated fly ash cements as alternative to Portland cement: study on chemical, physical-mechanical, and durability properties of mortars with the same strength class. Construction and Building Materials. 2020; 246 ():118436.

Chicago/Turabian Style

Alessandra Mobili; Antonio Telesca; Milena Marroccoli; Francesca Tittarelli. 2020. "Calcium sulfoaluminate and alkali-activated fly ash cements as alternative to Portland cement: study on chemical, physical-mechanical, and durability properties of mortars with the same strength class." Construction and Building Materials 246, no. : 118436.

Chapter
Published: 17 December 2019 in The First Outstanding 50 Years of “Università Politecnica delle Marche”
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Already from the beginning, 50 years ago, the first nucleus of researchers establishing the research group, was convinced that the construction sector was the best option for the valorization of industrial by-products as “secondary raw materials”. In fact, this sector is probably the largest consumer of resources and the largest waste generator, consequently it has huge environmental impact. On the other hand, construction materials affect the performance of buildings with respect to safety, health, environmental performance and energy efficiency. Manufacturing of construction products using alternative raw materials; recycling to manage construction and demolition waste; durability and environmental compatibility of materials: all these were the different and challenging fields of research that the group has faced in a continuous effort of innovation and cooperation at national and international level. The focus of the group was already perfectly in line with what is now called “Circular Economy”, which at present is considered a revolution in the way of human economic development. We are sure the group thus contributed to this revolution even before the term was in current use. We feel ready for the next 50.

ACS Style

Maria Letizia Ruello; Tiziano Bellezze; Valeria Corinaldesi; Jacopo Donnini; Anna Laura Eusebi; Francesco Fatone; Gabriele Fava; Orlando Favoni; Romeo Fratesi; Chiara Giosué; Giampaolo Giuliani; Mirco Marcellini; Alida Mazzoli; Alessandra Mobili; Gabriella Roventi; Francesca Tittarelli. Sustainability in Construction Materials: From Waste Valorization to Circular Economy. The First Outstanding 50 Years of “Università Politecnica delle Marche” 2019, 279 -296.

AMA Style

Maria Letizia Ruello, Tiziano Bellezze, Valeria Corinaldesi, Jacopo Donnini, Anna Laura Eusebi, Francesco Fatone, Gabriele Fava, Orlando Favoni, Romeo Fratesi, Chiara Giosué, Giampaolo Giuliani, Mirco Marcellini, Alida Mazzoli, Alessandra Mobili, Gabriella Roventi, Francesca Tittarelli. Sustainability in Construction Materials: From Waste Valorization to Circular Economy. The First Outstanding 50 Years of “Università Politecnica delle Marche”. 2019; ():279-296.

Chicago/Turabian Style

Maria Letizia Ruello; Tiziano Bellezze; Valeria Corinaldesi; Jacopo Donnini; Anna Laura Eusebi; Francesco Fatone; Gabriele Fava; Orlando Favoni; Romeo Fratesi; Chiara Giosué; Giampaolo Giuliani; Mirco Marcellini; Alida Mazzoli; Alessandra Mobili; Gabriella Roventi; Francesca Tittarelli. 2019. "Sustainability in Construction Materials: From Waste Valorization to Circular Economy." The First Outstanding 50 Years of “Università Politecnica delle Marche” , no. : 279-296.

Conference paper
Published: 18 September 2019 in IOP Conference Series: Materials Science and Engineering
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This article presents how concrete properties would change if part of a coarse aggregate (granite crushed stone) were replaced with bitumen roofing production waste (BTw). BTw is a huge ecological problem because these wastes are generated in large quantities when replacing old bitumen-based roof tiles. Wastes are also produced during the production of bituminous roof coatings. Usually BTw are stored in landfills or it is attempted to use/dispose them in the production of asphalt concrete. There are very few works which analyse the impact of BTw on the properties of cement materials, although the impact of these wastes on the properties of cement materials could be beneficial because BTw consist of aggregate, granules, bitumen and fibers. In order to use BTw, standard concrete samples were first formed, then 5/16 granite fraction was replaced with BTw in amounts of 2%, 4% and 6% by weight The amounts of limestone Portland cement, fine aggregate (sand), water and superplasticizer in the concrete mixtures were constant. The new generation of superplasticizer based on polycarboxylates was used in mixtures. The following concrete properties were identified and analyzed: density of the mixture, flowability, density of concrete samples, water absorption, compressive strength, forecasted frost resistance, and microstructure studies were conducted as well. The results of the studies showed that BTw can be used in small amounts, i. e. up to 6%, then the density of the samples slightly decreased (by 2.4%) and water absorption increased (by 0.7%). Compressive strength, after replacing 2% granite crushed stone, decreased by 2.4%. However, gradual addition of the amount of BTw resulted in more closed pores that improved the frost resistance of the concrete. When 6% of bulk filler was replaced with BTw, closed porosity, compared to control samples, increased by 54% and forecasted frost resistance - by 26%. Microstructure analysis showed that with 6% BTw a dense cement stone structure was formed, showing the hydrates of portlandite and CSH.

ACS Style

Marija Vaiciene; Jurgita Malaiskiene; Alessandra Mobili; Francesca Tittarelli. The Impact of Bitumen Roofing Production Waste (BTw) on Physical Mechanical Properties of Concrete. IOP Conference Series: Materials Science and Engineering 2019, 603, 022094 .

AMA Style

Marija Vaiciene, Jurgita Malaiskiene, Alessandra Mobili, Francesca Tittarelli. The Impact of Bitumen Roofing Production Waste (BTw) on Physical Mechanical Properties of Concrete. IOP Conference Series: Materials Science and Engineering. 2019; 603 (2):022094.

Chicago/Turabian Style

Marija Vaiciene; Jurgita Malaiskiene; Alessandra Mobili; Francesca Tittarelli. 2019. "The Impact of Bitumen Roofing Production Waste (BTw) on Physical Mechanical Properties of Concrete." IOP Conference Series: Materials Science and Engineering 603, no. 2: 022094.

Journal article
Published: 01 September 2019 in Construction and Building Materials
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ACS Style

Chiara Giosuè; Alessandra Mobili; Costanzo Di Perna; Francesca Tittarelli. Performance of lightweight cement-based and alkali-activated mortars exposed to high-temperature. Construction and Building Materials 2019, 220, 565 -576.

AMA Style

Chiara Giosuè, Alessandra Mobili, Costanzo Di Perna, Francesca Tittarelli. Performance of lightweight cement-based and alkali-activated mortars exposed to high-temperature. Construction and Building Materials. 2019; 220 ():565-576.

Chicago/Turabian Style

Chiara Giosuè; Alessandra Mobili; Costanzo Di Perna; Francesca Tittarelli. 2019. "Performance of lightweight cement-based and alkali-activated mortars exposed to high-temperature." Construction and Building Materials 220, no. : 565-576.

Website
Published: 25 March 2019 in Advances and Trends in Engineering Sciences and Technologies III
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Structural monitoring systems are gaining increasing interest in the field of civil engineering research, due to the recent commitment for the preservation of building heritage, for the saving of resources and for an eco-friendly construction industry. Recent researches show that the addition of conductive fillers and fibers within cement materials could originate cement-composites able to diagnose their own state of strain and tension, measuring the variation of their electrical characteristics (resistance). In this work, resistivity and piezoresistivity of mortars complemented with Graphene Nanoplatelets (GNP), and Carbon Fibers (CF) were evaluated. The variations in electrical resistivity as a function of strain were analyzed under cyclic uniaxial compression of the mortars samples. The results showed a high piezoresistivity behavior of the mortars with an optimal dispersion of GNP and CF, with a quite reversible relation between Fractional Change in Resistivity (FCR) and compressive strain.

ACS Style

A. Belli; Alessandra Mobili; T. Bellezze; F. Tittarelli; Paulo Cachim. Piezoresistive behavior of mortars loaded with graphene and carbon fibers for the development of self-sensing composites. Advances and Trends in Engineering Sciences and Technologies III 2019, 37 -42.

AMA Style

A. Belli, Alessandra Mobili, T. Bellezze, F. Tittarelli, Paulo Cachim. Piezoresistive behavior of mortars loaded with graphene and carbon fibers for the development of self-sensing composites. Advances and Trends in Engineering Sciences and Technologies III. 2019; ():37-42.

Chicago/Turabian Style

A. Belli; Alessandra Mobili; T. Bellezze; F. Tittarelli; Paulo Cachim. 2019. "Piezoresistive behavior of mortars loaded with graphene and carbon fibers for the development of self-sensing composites." Advances and Trends in Engineering Sciences and Technologies III , no. : 37-42.

Articles
Published: 24 January 2019 in Journal of Sustainable Cement-Based Materials
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The article focuses on the development of innovative and multifunctional mortars with low environmental impact for indoor applications acting as passive systems to moderate extremes of humidity and to lower the concentration of pollutants. Mortars are manufactured by keeping constant the water/binder ratio, using sand as reference aggregate, and by replacing the total volume of sand with zeolite. In some mixes the aggregate, is also at 25vol% by wool natural fibers. Regardless lightness, zeolite thanks to its pozzolanic activity, helps to improve the compressive strength of mortars manufactured with wool fibers. In addition, the combination of zeolite and wool increases the hygro-thermal performance of mortars: water vapor resistance factor (22% lower than the reference), moisture buffering value (100% higher than the reference), and thermal conductivity (66% lower than the reference), respectively. Depolluting properties of zeolite-based mortars, in terms of adsorption capacity, are 65% lower than that of reference mortar.

ACS Style

Chiara Giosuè; A. Mobili; Qingliang Yu; H.J.H. Brouwers; M.L. Ruello; F. Tittarelli. Properties of multifunctional lightweight mortars containing zeolite and natural fibers. Journal of Sustainable Cement-Based Materials 2019, 8, 214 -227.

AMA Style

Chiara Giosuè, A. Mobili, Qingliang Yu, H.J.H. Brouwers, M.L. Ruello, F. Tittarelli. Properties of multifunctional lightweight mortars containing zeolite and natural fibers. Journal of Sustainable Cement-Based Materials. 2019; 8 (4):214-227.

Chicago/Turabian Style

Chiara Giosuè; A. Mobili; Qingliang Yu; H.J.H. Brouwers; M.L. Ruello; F. Tittarelli. 2019. "Properties of multifunctional lightweight mortars containing zeolite and natural fibers." Journal of Sustainable Cement-Based Materials 8, no. 4: 214-227.

Journal article
Published: 02 November 2018 in Sustainability
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This paper presents the resistivity and piezoresistivity behavior of cement-based mortars manufactured with graphene nanoplatelet filler (GNP), virgin carbon fibers (VCF) and recycled carbon fibers (RCF). GNP was added at 4% of the cement weight, whereas two percentages of carbon fibers were chosen, namely 0.05% and 0.2% of the total volume. The combined effect of both filler and fibers was also investigated. Mortars were studied in terms of their mechanical properties (under flexure and compression) and electrical resistivity. Mortars with the lowest electrical resistivity values were also subjected to cyclic uniaxial compression to evaluate the variations in electrical resistivity as a function of strain. The results obtained show that mortars have piezoresistive behavior only if they are subjected to a prior drying process. In addition, dry specimens exhibit a high piezoresistivity only when loaded with 0.2 vol.% of VCF and 0.4 wt.% of GNP plus 0.2 vol.% RCF, with a quite reversible relation between their fractional change in resistivity (FCR) and compressive strain.

ACS Style

Alberto Belli; Alessandra Mobili; Tiziano Bellezze; Francesca Tittarelli; Paulo Cachim. Evaluating the Self-Sensing Ability of Cement Mortars Manufactured with Graphene Nanoplatelets, Virgin or Recycled Carbon Fibers through Piezoresistivity Tests. Sustainability 2018, 10, 4013 .

AMA Style

Alberto Belli, Alessandra Mobili, Tiziano Bellezze, Francesca Tittarelli, Paulo Cachim. Evaluating the Self-Sensing Ability of Cement Mortars Manufactured with Graphene Nanoplatelets, Virgin or Recycled Carbon Fibers through Piezoresistivity Tests. Sustainability. 2018; 10 (11):4013.

Chicago/Turabian Style

Alberto Belli; Alessandra Mobili; Tiziano Bellezze; Francesca Tittarelli; Paulo Cachim. 2018. "Evaluating the Self-Sensing Ability of Cement Mortars Manufactured with Graphene Nanoplatelets, Virgin or Recycled Carbon Fibers through Piezoresistivity Tests." Sustainability 10, no. 11: 4013.

Journal article
Published: 17 October 2018 in Construction and Building Materials
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Inorganic polymers were synthesised using metakaolin and cotton shell ash as activator. In this way, the negative environmental impact of sodium or potassium silicate solutions as alkaline activators can be eliminated. Phase transformations investigated using FTIR suggested the formation of inorganic polymers through the shift of the most intense band from 1031 cm−1 in metakaolin to around 973 cm−1 in the final product and the absence of the band at 789 cm−1 in the latter. XRD results revealed the presence of kalsilite and zeolite K-F, which appear as hexagonal and elongated crystals in SEM. A maximum compressive strength of 36.7 MPa was obtained. Compressive strength values increased with increasing K/Al ratios and with the reduction of pore densities due to the formation of the amorphous inorganic polymer matrix as observed on the SEM micrographs. Cotton shell ash can thus be used as an alternative activator.

ACS Style

A. Madi Balo; H. Rahier; Alessandra Mobili; A. Katsiki; Nathalie Fagel; U. Melo Chinje; D. Njopwouo. Metakaolin-based inorganic polymer synthesis using cotton shell ash as sole alkaline activator. Construction and Building Materials 2018, 191, 1011 -1022.

AMA Style

A. Madi Balo, H. Rahier, Alessandra Mobili, A. Katsiki, Nathalie Fagel, U. Melo Chinje, D. Njopwouo. Metakaolin-based inorganic polymer synthesis using cotton shell ash as sole alkaline activator. Construction and Building Materials. 2018; 191 ():1011-1022.

Chicago/Turabian Style

A. Madi Balo; H. Rahier; Alessandra Mobili; A. Katsiki; Nathalie Fagel; U. Melo Chinje; D. Njopwouo. 2018. "Metakaolin-based inorganic polymer synthesis using cotton shell ash as sole alkaline activator." Construction and Building Materials 191, no. : 1011-1022.

Journal article
Published: 24 September 2018 in International Journal of Concrete Structures and Materials
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The possibility of recycling mixed colour waste glass as it is for manufacturing decorative architectural mortars, has been investigated. In mortars, the 0–33–66–100% of calcareous gravel volume has been replaced with recycled glass cullets, with no other inorganic addition. To mitigate the possible alkali–silica reaction, mixes with a hydrophobic admixture were also compared. The obtained results show that the replacement of calcareous gravel with glass cullets of similar grain size distribution permits to reduce the dosage of the superplasticizer admixture to obtain the same workability of fresh mortar; it does not affect significantly the mechanical performances, the water vapour permeability and the capillary water absorption but it reduces significantly the drying shrinkage deformation. The used recycled glass is classified as no reactive in terms of alkali–silica reaction neither in water nor in NaOH solution following the parameters of the current normative, even in the absence of the hydrophobic admixture. The hydrophobic admixture further delays the expansion trigger but not the speed of its propagation.

ACS Style

Francesca Tittarelli; Chiara Giosuè; Alessandra Mobili. Recycled Glass as Aggregate for Architectural Mortars. International Journal of Concrete Structures and Materials 2018, 12, 57 .

AMA Style

Francesca Tittarelli, Chiara Giosuè, Alessandra Mobili. Recycled Glass as Aggregate for Architectural Mortars. International Journal of Concrete Structures and Materials. 2018; 12 (1):57.

Chicago/Turabian Style

Francesca Tittarelli; Chiara Giosuè; Alessandra Mobili. 2018. "Recycled Glass as Aggregate for Architectural Mortars." International Journal of Concrete Structures and Materials 12, no. 1: 57.

Research article
Published: 16 September 2018 in Advances in Materials Science and Engineering
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The total substitution by volume of natural coarse calcareous aggregate by coarse recycled brick aggregate (RBA) and coarse recycled concrete aggregate (RCA) has been investigated to produce more sustainable and environment-friendly mortars. Aggregates were also partially substituted by their fines at 12.5% by volume. Mortars have been tested in terms of mechanical, microstructural, and durability properties. Results show that it is feasible to replace a natural calcareous aggregate entirely by recycled aggregates. In particular, the obtained mortars, even if more porous and more prone to the water capillary absorption than that manufactured with natural aggregates, result in less stiffness and thus are less subjected to crack formation, more permeable to water vapour, and less susceptible to sulphate attack.

ACS Style

Alessandra Mobili; Chiara Giosuè; Valeria Corinaldesi; Francesca Tittarelli. Bricks and Concrete Wastes as Coarse and Fine Aggregates in Sustainable Mortars. Advances in Materials Science and Engineering 2018, 2018, 1 -11.

AMA Style

Alessandra Mobili, Chiara Giosuè, Valeria Corinaldesi, Francesca Tittarelli. Bricks and Concrete Wastes as Coarse and Fine Aggregates in Sustainable Mortars. Advances in Materials Science and Engineering. 2018; 2018 ():1-11.

Chicago/Turabian Style

Alessandra Mobili; Chiara Giosuè; Valeria Corinaldesi; Francesca Tittarelli. 2018. "Bricks and Concrete Wastes as Coarse and Fine Aggregates in Sustainable Mortars." Advances in Materials Science and Engineering 2018, no. : 1-11.

Review
Published: 11 July 2018 in Journal of Applied Biomaterials & Functional Materials
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This review presents “a state of the art” report on sustainability in construction materials. The authors propose different solutions to make the concrete industry more environmentally friendly in order to reduce greenhouse gases emissions and consumption of non-renewable resources. Part 1—the present paper—focuses on the use of binders alternative to Portland cement, including sulfoaluminate cements, alkali-activated materials, and geopolymers. Part 2 will be dedicated to traditional Portland-free binders and waste management and recycling in mortar and concrete production.

ACS Style

Luigi Coppola; Tiziano Bellezze; Alberto Belli; Maria Chiara Bignozzi; Fabio Maria Bolzoni; Andrea Brenna; Marina Cabrini; Sebastiano Candamano; Marta Cappai; Domenico Caputo; Maddalena Carsana; Ludovica Casnedi; Raffaele Cioffi; Ombretta Cocco; Denny Coffetti; Francesco Colangelo; Bartolomeo Coppola; Valeria Corinaldesi; Fortunato Crea; Elena Crotti; Valeria Daniele; Sabino De Gisi; Francesco Delogu; Maria Vittoria Diamanti; Luciano Di Maio; Rosa Di Mundo; Luca Di Palma; Jacopo Donnini; Ilenia Farina; Claudio Ferone; Patrizia Frontera; Matteo Gastaldi; Chiara Giosuè; Loredana Incarnato; Barbara Liguori; Federica Lollini; Sergio Lorenzi; Stefania Manzi; Ottavio Marino; Milena Marroccoli; Maria Cristina Mascolo; Letterio Mavilia; Alida Mazzoli; Franco Medici; Paola Meloni; Glauco Merlonetti; Alessandra Mobili; Michele Notarnicola; Marco Ormellese; Tommaso Pastore; Mariapia Pedeferri; Andrea Petrella; Giorgio Pia; Elena Redaelli; Giuseppina Roviello; Paola Scarfato; Giancarlo Scoccia; Giuliana Taglieri; Antonio Telesca; Francesca Tittarelli; Francesco Todaro; Giorgio Vilardi; Fan Yang. Binders alternative to Portland cement and waste management for sustainable construction—part 1. Journal of Applied Biomaterials & Functional Materials 2018, 16, 186 -202.

AMA Style

Luigi Coppola, Tiziano Bellezze, Alberto Belli, Maria Chiara Bignozzi, Fabio Maria Bolzoni, Andrea Brenna, Marina Cabrini, Sebastiano Candamano, Marta Cappai, Domenico Caputo, Maddalena Carsana, Ludovica Casnedi, Raffaele Cioffi, Ombretta Cocco, Denny Coffetti, Francesco Colangelo, Bartolomeo Coppola, Valeria Corinaldesi, Fortunato Crea, Elena Crotti, Valeria Daniele, Sabino De Gisi, Francesco Delogu, Maria Vittoria Diamanti, Luciano Di Maio, Rosa Di Mundo, Luca Di Palma, Jacopo Donnini, Ilenia Farina, Claudio Ferone, Patrizia Frontera, Matteo Gastaldi, Chiara Giosuè, Loredana Incarnato, Barbara Liguori, Federica Lollini, Sergio Lorenzi, Stefania Manzi, Ottavio Marino, Milena Marroccoli, Maria Cristina Mascolo, Letterio Mavilia, Alida Mazzoli, Franco Medici, Paola Meloni, Glauco Merlonetti, Alessandra Mobili, Michele Notarnicola, Marco Ormellese, Tommaso Pastore, Mariapia Pedeferri, Andrea Petrella, Giorgio Pia, Elena Redaelli, Giuseppina Roviello, Paola Scarfato, Giancarlo Scoccia, Giuliana Taglieri, Antonio Telesca, Francesca Tittarelli, Francesco Todaro, Giorgio Vilardi, Fan Yang. Binders alternative to Portland cement and waste management for sustainable construction—part 1. Journal of Applied Biomaterials & Functional Materials. 2018; 16 (3):186-202.

Chicago/Turabian Style

Luigi Coppola; Tiziano Bellezze; Alberto Belli; Maria Chiara Bignozzi; Fabio Maria Bolzoni; Andrea Brenna; Marina Cabrini; Sebastiano Candamano; Marta Cappai; Domenico Caputo; Maddalena Carsana; Ludovica Casnedi; Raffaele Cioffi; Ombretta Cocco; Denny Coffetti; Francesco Colangelo; Bartolomeo Coppola; Valeria Corinaldesi; Fortunato Crea; Elena Crotti; Valeria Daniele; Sabino De Gisi; Francesco Delogu; Maria Vittoria Diamanti; Luciano Di Maio; Rosa Di Mundo; Luca Di Palma; Jacopo Donnini; Ilenia Farina; Claudio Ferone; Patrizia Frontera; Matteo Gastaldi; Chiara Giosuè; Loredana Incarnato; Barbara Liguori; Federica Lollini; Sergio Lorenzi; Stefania Manzi; Ottavio Marino; Milena Marroccoli; Maria Cristina Mascolo; Letterio Mavilia; Alida Mazzoli; Franco Medici; Paola Meloni; Glauco Merlonetti; Alessandra Mobili; Michele Notarnicola; Marco Ormellese; Tommaso Pastore; Mariapia Pedeferri; Andrea Petrella; Giorgio Pia; Elena Redaelli; Giuseppina Roviello; Paola Scarfato; Giancarlo Scoccia; Giuliana Taglieri; Antonio Telesca; Francesca Tittarelli; Francesco Todaro; Giorgio Vilardi; Fan Yang. 2018. "Binders alternative to Portland cement and waste management for sustainable construction—part 1." Journal of Applied Biomaterials & Functional Materials 16, no. 3: 186-202.

Review
Published: 10 July 2018 in Journal of Applied Biomaterials & Functional Materials
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The paper represents the “state of the art” on sustainability in construction materials. In Part 1 of the paper, issues related to production, microstructures, chemical nature, engineering properties, and durability of mixtures based on binders alternative to Portland cement were presented. This second part of the paper concerns the use of traditional and innovative Portland-free lime-based mortars in the conservation of cultural heritage, and the recycling and management of wastes to reduce consumption of natural resources in the production of construction materials. The latter is one of the main concerns in terms of sustainability since nowadays more than 75% of wastes are disposed of in landfills.

ACS Style

Luigi Coppola; Tiziano Bellezze; Alberto Belli; Maria C Bignozzi; Fabio Maria Bolzoni; Andrea Brenna; Marina Cabrini; Sebastiano Candamano; Marta Cappai; Domenico Caputo; Maddalena Carsana; Ludovica Casnedi; Raffaele Cioffi; Ombretta Cocco; Denny Coffetti; Francesco Colangelo; Bartolomeo Coppola; Valeria Corinaldesi; Fortunato Crea; Elena Crotti; Valeria Daniele; Sabino De Gisi; Francesco Delogu; Maria V Diamanti; Luciano Di Maio; Rosa Di Mundo; Luca Di Palma; Jacopo Donnini; Ilenia Farina; Claudio Ferone; Patrizia Frontera; Matteo Gastaldi; Chiara Giosuè; Loredana Incarnato; Barbara Liguori; Federica Lollini; Sergio Lorenzi; Stefania Manzi; Ottavio Marino; Milena Marroccoli; Maria C Mascolo; Letterio Mavilia; Alida Mazzoli; Franco Medici; Paola Meloni; Glauco Merlonetti; Alessandra Mobili; Michele Notarnicola; Marco Ormellese; Tommaso Pastore; Mariapia Pedeferri; Andrea Petrella; Giorgio Pia; Elena Redaelli; Giuseppina Roviello; Paola Scarfato; Giancarlo Scoccia; Giuliana Taglieri; Antonio Telesca; Francesca Tittarelli; Francesco Todaro; Giorgio Vilardi; Fan Yang. Binders alternative to Portland cement and waste management for sustainable construction – Part 2. Journal of Applied Biomaterials & Functional Materials 2018, 16, 207 -221.

AMA Style

Luigi Coppola, Tiziano Bellezze, Alberto Belli, Maria C Bignozzi, Fabio Maria Bolzoni, Andrea Brenna, Marina Cabrini, Sebastiano Candamano, Marta Cappai, Domenico Caputo, Maddalena Carsana, Ludovica Casnedi, Raffaele Cioffi, Ombretta Cocco, Denny Coffetti, Francesco Colangelo, Bartolomeo Coppola, Valeria Corinaldesi, Fortunato Crea, Elena Crotti, Valeria Daniele, Sabino De Gisi, Francesco Delogu, Maria V Diamanti, Luciano Di Maio, Rosa Di Mundo, Luca Di Palma, Jacopo Donnini, Ilenia Farina, Claudio Ferone, Patrizia Frontera, Matteo Gastaldi, Chiara Giosuè, Loredana Incarnato, Barbara Liguori, Federica Lollini, Sergio Lorenzi, Stefania Manzi, Ottavio Marino, Milena Marroccoli, Maria C Mascolo, Letterio Mavilia, Alida Mazzoli, Franco Medici, Paola Meloni, Glauco Merlonetti, Alessandra Mobili, Michele Notarnicola, Marco Ormellese, Tommaso Pastore, Mariapia Pedeferri, Andrea Petrella, Giorgio Pia, Elena Redaelli, Giuseppina Roviello, Paola Scarfato, Giancarlo Scoccia, Giuliana Taglieri, Antonio Telesca, Francesca Tittarelli, Francesco Todaro, Giorgio Vilardi, Fan Yang. Binders alternative to Portland cement and waste management for sustainable construction – Part 2. Journal of Applied Biomaterials & Functional Materials. 2018; 16 (4):207-221.

Chicago/Turabian Style

Luigi Coppola; Tiziano Bellezze; Alberto Belli; Maria C Bignozzi; Fabio Maria Bolzoni; Andrea Brenna; Marina Cabrini; Sebastiano Candamano; Marta Cappai; Domenico Caputo; Maddalena Carsana; Ludovica Casnedi; Raffaele Cioffi; Ombretta Cocco; Denny Coffetti; Francesco Colangelo; Bartolomeo Coppola; Valeria Corinaldesi; Fortunato Crea; Elena Crotti; Valeria Daniele; Sabino De Gisi; Francesco Delogu; Maria V Diamanti; Luciano Di Maio; Rosa Di Mundo; Luca Di Palma; Jacopo Donnini; Ilenia Farina; Claudio Ferone; Patrizia Frontera; Matteo Gastaldi; Chiara Giosuè; Loredana Incarnato; Barbara Liguori; Federica Lollini; Sergio Lorenzi; Stefania Manzi; Ottavio Marino; Milena Marroccoli; Maria C Mascolo; Letterio Mavilia; Alida Mazzoli; Franco Medici; Paola Meloni; Glauco Merlonetti; Alessandra Mobili; Michele Notarnicola; Marco Ormellese; Tommaso Pastore; Mariapia Pedeferri; Andrea Petrella; Giorgio Pia; Elena Redaelli; Giuseppina Roviello; Paola Scarfato; Giancarlo Scoccia; Giuliana Taglieri; Antonio Telesca; Francesca Tittarelli; Francesco Todaro; Giorgio Vilardi; Fan Yang. 2018. "Binders alternative to Portland cement and waste management for sustainable construction – Part 2." Journal of Applied Biomaterials & Functional Materials 16, no. 4: 207-221.