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Dr. Lourdes Soriano
Research & Development (R&D) Cell, Bangladesh Knitwear Manufacturers and Exporters Association (BKMEA), Dhaka, Bangladesh

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0 geopolymer
0 carbon footprint
0 pozzolan,
0 alkaline activation
0 residual materials

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biomass ash
pozzolan,
alkaline activation
geopolymer
carbon footprint

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Journal article
Published: 28 July 2021 in Materiales de Construcción
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This paper aimed to evaluate the long-term compressive strength development of the sewage sludge ash/metakaolin (SSA/MK)-based geopolymer. SSA/MK-based geopolymeric mortars and pastes were produced at 25ºC with different SSA contents (0 - 30 wt.%). Compressive strength tests were run within the 3-720 curing days range. A physicochemical characterisation (X-ray diffraction and scanning electron microscopy) was performed in geopolymeric pastes. All the geopolymeric mortars presented a compressive strength gain with curing time. The mortars with all the SSA evaluated contents (10, 20, 30 wt.%) developed a compressive strength over 40 MPa after 720 curing days at 25ºC. The maximum compressive strength of the mortars with SSA was approximately 61 MPa (10 wt.% of SSA), similarly to the reference mortar (100% MK-based geopolymer). The microstructure analyses showed that the SSA/MK-based geopolymer presented a dense microstructure with N-A-S-H gel formation.

ACS Style

D. Istuque; L. Soriano; M.V. Borrachero; J. Payá; J.L. Akasaki; J.L.P. Melges; M.M. Tashima. Evaluation of the long-term compressive strength development of the sewage sludge ash/metakaolin-based geopolymer. Materiales de Construcción 2021, 71, e254 -e254.

AMA Style

D. Istuque, L. Soriano, M.V. Borrachero, J. Payá, J.L. Akasaki, J.L.P. Melges, M.M. Tashima. Evaluation of the long-term compressive strength development of the sewage sludge ash/metakaolin-based geopolymer. Materiales de Construcción. 2021; 71 (343):e254-e254.

Chicago/Turabian Style

D. Istuque; L. Soriano; M.V. Borrachero; J. Payá; J.L. Akasaki; J.L.P. Melges; M.M. Tashima. 2021. "Evaluation of the long-term compressive strength development of the sewage sludge ash/metakaolin-based geopolymer." Materiales de Construcción 71, no. 343: e254-e254.

Journal article
Published: 01 June 2021 in Journal of Materials in Civil Engineering
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Waste management is a crucial issue facing modern society. The generation of sewage sludge is increasing annually due to the urbanization and improvement of sanitation systems of cities. The construction sector has emerged as a solution for the elimination of waste due to the enormous volume of materials that this sector can absorb. This paper evaluates the pozzolanic activity of sewage sludge ash (USSA) obtained following an uncontrolled-combustion process, a simple and economic procedure. Compressive strength of Portland cement/USSA mortars with 5%–25% by weight USSA were evaluated. Calcium hydroxide/USSA and Portland cement/USSA pastes were chemically and physically characterized through thermogravimetric/differential-thermogravimetric (TG/DTG), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and scanning electron microscopy (SEM) analyses. The increase in the replacement of Portland cement by USSA is associated with an increase in the compressive strength of mortars. These values for USSA containing mortars cured for 90 days were in the range of 49.6–55.4 MPa, higher than the one reached by the reference mortar. According to the microstructural analysis, the increment on the compressive strength can be attributed to the formation of hydrated products (C─ S─ H, C─ A─ S─ H, and C─ A─ H) by the pozzolanic reaction of USSA.

ACS Style

Danilo Bordan Istuque; Lucia Reig; Lourdes Soriano; Maria Victoria Borrachero; José Luiz Pinheiro Melges; Jorge Luis Akasaki; Jorge Juan Payá Bernabeu; Mauro Mitsuuchi Tashima. Evaluation of the Pozzolanic Activity of Uncontrolled-Combusted Sewage Sludge Ash. Journal of Materials in Civil Engineering 2021, 33, 04021128 .

AMA Style

Danilo Bordan Istuque, Lucia Reig, Lourdes Soriano, Maria Victoria Borrachero, José Luiz Pinheiro Melges, Jorge Luis Akasaki, Jorge Juan Payá Bernabeu, Mauro Mitsuuchi Tashima. Evaluation of the Pozzolanic Activity of Uncontrolled-Combusted Sewage Sludge Ash. Journal of Materials in Civil Engineering. 2021; 33 (6):04021128.

Chicago/Turabian Style

Danilo Bordan Istuque; Lucia Reig; Lourdes Soriano; Maria Victoria Borrachero; José Luiz Pinheiro Melges; Jorge Luis Akasaki; Jorge Juan Payá Bernabeu; Mauro Mitsuuchi Tashima. 2021. "Evaluation of the Pozzolanic Activity of Uncontrolled-Combusted Sewage Sludge Ash." Journal of Materials in Civil Engineering 33, no. 6: 04021128.

Journal article
Published: 31 May 2021 in Materials
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This work studies the possibility of incorporating different proportions of glass powder from the waste glass (rejected material called fine cullet) produced during the glass recycling process into the manufacturing of mortar and concrete. For this purpose, the material is characterized by its chemical composition and pozzolanic activity, and the shape and size of its particles are studied. It is then incorporated as a substitute for cement into the manufacturing of mortar and concrete at 25% and 40% of cement weight, and its effect on setting times, consistency, and mechanical strength is analyzed. Its behavior as a slow pozzolan is verified, and the possibility of incorporating it into concrete is ratified by reducing its cement content and making it a more sustainable material.

ACS Style

Ester Gimenez-Carbo; Lourdes Soriano; Marta Roig-Flores; Pedro Serna. Characterization of Glass Powder from Glass Recycling Process Waste and Preliminary Testing. Materials 2021, 14, 2971 .

AMA Style

Ester Gimenez-Carbo, Lourdes Soriano, Marta Roig-Flores, Pedro Serna. Characterization of Glass Powder from Glass Recycling Process Waste and Preliminary Testing. Materials. 2021; 14 (11):2971.

Chicago/Turabian Style

Ester Gimenez-Carbo; Lourdes Soriano; Marta Roig-Flores; Pedro Serna. 2021. "Characterization of Glass Powder from Glass Recycling Process Waste and Preliminary Testing." Materials 14, no. 11: 2971.

Journal article
Published: 01 May 2021 in Construction and Building Materials
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Spent fluorescent lamps glass (SFLG) waste, manually and mechanically processed in a lamps waste treatment plant, was used to partially replace up to 50 wt% Portland cement (PC). Both waste types exhibited similar pozzolanic activity. The mortars containing up to 35 wt% SFLG met the specifications for other pozzolanic materials (e.g. fly ash) and, after 90 curing days, their compressive strength values were similar to or higher than those of the 100% PC sample (58.8 MPa). Our results provide an alternative reutilization process for this hazardous waste to reuse SFLG as-received (no washing to reduce mercury) and contributes to less PC use.

ACS Style

A.M. Pitarch; L. Reig; A. Gallardo; L. Soriano; M.V. Borrachero; S. Rochina. Reutilisation of hazardous spent fluorescent lamps glass waste as supplementary cementitious material. Construction and Building Materials 2021, 292, 123424 .

AMA Style

A.M. Pitarch, L. Reig, A. Gallardo, L. Soriano, M.V. Borrachero, S. Rochina. Reutilisation of hazardous spent fluorescent lamps glass waste as supplementary cementitious material. Construction and Building Materials. 2021; 292 ():123424.

Chicago/Turabian Style

A.M. Pitarch; L. Reig; A. Gallardo; L. Soriano; M.V. Borrachero; S. Rochina. 2021. "Reutilisation of hazardous spent fluorescent lamps glass waste as supplementary cementitious material." Construction and Building Materials 292, no. : 123424.

Journal article
Published: 01 May 2021 in Journal of Materials in Civil Engineering
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Cellular concrete is an alternative to conventional concrete as a low-density and high-insulating building material. The eco-cellular concretes (ECCs) based on geopolymer technology have been recently introduced by the scientific community. A form of ECC was studied, in which the fluid catalytic cracking residue and the blast furnace slag were employed as precursors, the rice husk ash was utilized as an alternative silica source in the activator, and the aerating reagent was replaced with recycled aluminum foil. Field emission scanning electron microscopy, optical microscopy, and ImageJ version 1.48 software (National Institutes of Health) were employed to characterize the void distribution. Bulk density and porosity were determined by hydric tests. The results revealed that lowest densities without strength loss were obtained when the cementing matrix had a homogeneous void system: similar spacing between pores, narrow size ranges, and nonconnected pores. A relationship was established between open and closed porosity with density and thermal conductivity.

ACS Style

Alba Font; María Victoria Borrachero; Lourdes Soriano; José Monzó; Jordi Payá. Air-Void System Characterization of Eco-Cellular Concretes. Journal of Materials in Civil Engineering 2021, 33, 04021088 .

AMA Style

Alba Font, María Victoria Borrachero, Lourdes Soriano, José Monzó, Jordi Payá. Air-Void System Characterization of Eco-Cellular Concretes. Journal of Materials in Civil Engineering. 2021; 33 (5):04021088.

Chicago/Turabian Style

Alba Font; María Victoria Borrachero; Lourdes Soriano; José Monzó; Jordi Payá. 2021. "Air-Void System Characterization of Eco-Cellular Concretes." Journal of Materials in Civil Engineering 33, no. 5: 04021088.

Journal article
Published: 21 April 2021 in Materials
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Resource recovery from waste is one of the most important ways to implement the so-called circular economy, and the use of alkali activated materials can become an alternative for traditional PC-based materials. These types of materials are based on waste resources involving a lower carbon footprint and present similar or high properties and good durability compared to that Portland cement (PC). This research work proposes using new waste generated in different types of industries. Four waste types were employed: fluid catalytic cracking residue (FCC) from the petrochemical industry; ceramic sanitary ware (CSW) from the construction industry; rice husk ash (RHA); diatomaceous waste from beer filtration (DB) (food industry). FCC and CSW were employed as precursor materials, and mixtures of both showed good properties of the obtained alkali activated materials generated with commercial products as activators (NaOH/waterglass). RHA and DB were herein used as an alternative silica source to prepare the alkaline activating solution. Mechanical behavior was studied by the compressive strength development of mortars. The corresponding pastes were characterized by X-ray diffraction, thermogravimetric analysis, and microscopy studies. The results were satisfactory, and demonstrated that employing these alternative activators from waste produces alkali activated materials with good mechanical properties, which were sometimes similar or even better than those obtained with commercial reagents.

ACS Style

Jordi Payá; Lourdes Soriano; Alba Font; Maria Borrachero Rosado; Javier Nande; Jose Monzo Balbuena. Reuse of Industrial and Agricultural Waste in the Fabrication of Geopolymeric Binders: Mechanical and Microstructural Behavior. Materials 2021, 14, 2089 .

AMA Style

Jordi Payá, Lourdes Soriano, Alba Font, Maria Borrachero Rosado, Javier Nande, Jose Monzo Balbuena. Reuse of Industrial and Agricultural Waste in the Fabrication of Geopolymeric Binders: Mechanical and Microstructural Behavior. Materials. 2021; 14 (9):2089.

Chicago/Turabian Style

Jordi Payá; Lourdes Soriano; Alba Font; Maria Borrachero Rosado; Javier Nande; Jose Monzo Balbuena. 2021. "Reuse of Industrial and Agricultural Waste in the Fabrication of Geopolymeric Binders: Mechanical and Microstructural Behavior." Materials 14, no. 9: 2089.

Journal article
Published: 17 April 2021 in Construction and Building Materials
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The use of almond-shell biomass ash (ABA) as an alternative component to the commercial reagents used in the activation of blast furnace slag (BFS) systems is investigated. The presence in its chemical composition of a high content of K2O indicates that it can alkalinize the medium. 100% waste-based mixtures ABA/BFS were studied by micro- and macrostructural tests. A compressive strength of 44 MPa was achieved by the mortar with 25% ABA addition cured for 7 days at 65 °C. The microstructural analysis showed the formation of slightly different C(K)-A-S-H gels to those formed when using KOH. The use of ABA in BFS mortars is shown as a greener alternative for construction materials because the replacement of synthetic chemical reagents that produced around a 75–80% of reduction in the values of kgCO2eq/m3 material.

ACS Style

Lourdes Soriano; Alba Font; Mauro M. Tashima; José Monzó; Maria Victoria Borrachero; Thaís Bonifácio; Jordi Payá. Almond-shell biomass ash (ABA): A greener alternative to the use of commercial alkaline reagents in alkali-activated cement. Construction and Building Materials 2021, 290, 123251 .

AMA Style

Lourdes Soriano, Alba Font, Mauro M. Tashima, José Monzó, Maria Victoria Borrachero, Thaís Bonifácio, Jordi Payá. Almond-shell biomass ash (ABA): A greener alternative to the use of commercial alkaline reagents in alkali-activated cement. Construction and Building Materials. 2021; 290 ():123251.

Chicago/Turabian Style

Lourdes Soriano; Alba Font; Mauro M. Tashima; José Monzó; Maria Victoria Borrachero; Thaís Bonifácio; Jordi Payá. 2021. "Almond-shell biomass ash (ABA): A greener alternative to the use of commercial alkaline reagents in alkali-activated cement." Construction and Building Materials 290, no. : 123251.

Journal article
Published: 15 January 2021 in Applied Sciences
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Rice husk ash is one of the most widely studied biomass ashes used in pozzolanic addition. Given its lower silica content, rice straw ash (RSA) has been explored less often, despite the fact that, according to the United Nations Food and Agriculture Organization (FAO), rice straw (RS) production is estimated at 600 million tons/year. In this work, RSA was physically and chemically characterized, and its pozzolanic properties were assessed. A controlled conditioning, burning, homogenization and grinding procedure was carried out to obtain RSA from RS. Chemical composition, insoluble residue, reactive silica, chloride content and particle size distribution were assessed for ash characterization. To determine RSA pozzolanicity, Frattini, electrical conductivity and pH measurements in an aqueous suspension of hydrated CH/RSA mixtures were obtained. Portland cement (PC) mortars with 15% and 30% RSA substitutions evaluated. The mechanical tests showed specimens with a strength activity index up to 90% and 80% with 15% and 30% RSA, respectively, after 3 days, and these values grew to 107–109% after 90 curing days.

ACS Style

Samantha Hidalgo; Lourdes Soriano; José Monzó; Jordi Payá; Alba Font; Mª Victoria Borrachero. Evaluation of Rice Straw Ash as a Pozzolanic Addition in Cementitious Mixtures. Applied Sciences 2021, 11, 773 .

AMA Style

Samantha Hidalgo, Lourdes Soriano, José Monzó, Jordi Payá, Alba Font, Mª Victoria Borrachero. Evaluation of Rice Straw Ash as a Pozzolanic Addition in Cementitious Mixtures. Applied Sciences. 2021; 11 (2):773.

Chicago/Turabian Style

Samantha Hidalgo; Lourdes Soriano; José Monzó; Jordi Payá; Alba Font; Mª Victoria Borrachero. 2021. "Evaluation of Rice Straw Ash as a Pozzolanic Addition in Cementitious Mixtures." Applied Sciences 11, no. 2: 773.

Journal article
Published: 15 January 2021 in Construction and Building Materials
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Use of lime as construction material is limited mainly by low initial strength. These properties can be improved by adding pozzolanic materials, but the evolution of the reaction usually needs older ages than 7 days. Alkali-activated materials, or geopolymers, are good-performance materials that can be produced with residual waste. The combination of traditional and new materials can lead to new uses of lime mortars. This paper studies a lime/pozzolan and geopolymer mixture. The chosen pozzolan is fluid catalytic cracking catalyst residue (FCC), a material employed as a precursor in alkali-activated material. FCC is activated by two activators: a mixture of NaOH and waterglass; a mixture of NaOH and rice husk ash (RHA). The new materials were studied in microstructure and mechanical behaviour terms. The results demonstrated that lime/pozzolan/geopolymer obtained superior compressive strengths after 1 curing day to that obtained for the corresponding lime/pozzolan mortar after 90 days. An improvement in compressive strength of around 145% was achieved for the mortar with 40% geopolymer compared to the mortar with only lime/pozzolan at 28 curing days.

ACS Style

Ariel R. Villca; Lourdes Soriano; Alba Font; Mauro M. Tashima; José Monzó; Maria Victoria Borrachero; Jordi Payá. Lime/pozzolan/geopolymer systems: Performance in pastes and mortars. Construction and Building Materials 2021, 276, 122208 .

AMA Style

Ariel R. Villca, Lourdes Soriano, Alba Font, Mauro M. Tashima, José Monzó, Maria Victoria Borrachero, Jordi Payá. Lime/pozzolan/geopolymer systems: Performance in pastes and mortars. Construction and Building Materials. 2021; 276 ():122208.

Chicago/Turabian Style

Ariel R. Villca; Lourdes Soriano; Alba Font; Mauro M. Tashima; José Monzó; Maria Victoria Borrachero; Jordi Payá. 2021. "Lime/pozzolan/geopolymer systems: Performance in pastes and mortars." Construction and Building Materials 276, no. : 122208.

Journal article
Published: 23 December 2020 in Construction and Building Materials
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The objective of this study was to evaluate the effects of potassium extraction on the pozzolanicity of sugar cane bagasse ash (SCBA), with the aim of producing reactive ash for use in cementitious composites. The sugar cane bagasse ashes were produced at 600 °C for 60 min, with a heating rate of 4 °C/min. The ashes were then ground and washed for potassium extraction. In order to assess the ash behaviour before and after potassium extraction, the following procedures were performed: energy-dispersive spectroscopy (EDS), loss on ignition (LOI), particle size distribution, x-ray powder diffraction (XRD), x-ray diffraction in calcium hydroxide paste, analysis of lime fixation by thermogravimetry, and evaluation of pozzolanic reactivity analyses. Results show that the extraction of potassium, increases the concentration of silica causing a greater pozzolanic reactivity of the ashes.

ACS Style

Gabriela Pitolli Lyra; María Victoria Borrachero; Lourdes Soriano; Jordi Payá; João Adriano Rossignolo. Comparison of original and washed pure sugar cane bagasse ashes as supplementary cementing materials. Construction and Building Materials 2020, 272, 122001 .

AMA Style

Gabriela Pitolli Lyra, María Victoria Borrachero, Lourdes Soriano, Jordi Payá, João Adriano Rossignolo. Comparison of original and washed pure sugar cane bagasse ashes as supplementary cementing materials. Construction and Building Materials. 2020; 272 ():122001.

Chicago/Turabian Style

Gabriela Pitolli Lyra; María Victoria Borrachero; Lourdes Soriano; Jordi Payá; João Adriano Rossignolo. 2020. "Comparison of original and washed pure sugar cane bagasse ashes as supplementary cementing materials." Construction and Building Materials 272, no. : 122001.

Journal article
Published: 18 December 2020 in Applied Sciences
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Worldwide cement production is around 4.2 billion tons, and the fabrication of one ton of ordinary Portland cement emits around 900 kg of CO2. Blast furnace slag (BFS) is a byproduct used to produce alkali-activated materials (AAM). BFS production was estimated at about 350 million tons in 2018, and the BFS reuse rate in construction materials of developing countries is low. AAM can reduce CO2 emissions in relation to Portland cement materials: Its use in construction would be a golden opportunity for developing countries in forthcoming decades. The present research aims to formulate AAM destined for future applications in developing countries. Two activators were used: NaOH, Na2CO3, and a mixture of both. The results showed that compressive strengths within the 42–56 MPa range after 28 curing days were obtained for the Na2CO3-activated mortars. The characterization analysis confirmed the presence of hydrotalcite, carbonated phases, CSH and CASH. The economic study showed that Na2CO3 was the cheapest activator in terms of the relative cost per ton and MPa of manufactured mortars. Finally, the environmental benefits of mortars based on this reagent were evidenced, and, in terms of kgCO2 emissions per ton and MPa, the mortars with Na2CO3 yielded 50% lower values than with NaOH.

ACS Style

Nabil Bella; Edwin Gudiel; Lourdes Soriano; Alba Font; María Victoria Borrachero; Jordi Paya; José Maria Monzó. Formulation of Alkali-Activated Slag Binder Destined for Use in Developing Countries. Applied Sciences 2020, 10, 9088 .

AMA Style

Nabil Bella, Edwin Gudiel, Lourdes Soriano, Alba Font, María Victoria Borrachero, Jordi Paya, José Maria Monzó. Formulation of Alkali-Activated Slag Binder Destined for Use in Developing Countries. Applied Sciences. 2020; 10 (24):9088.

Chicago/Turabian Style

Nabil Bella; Edwin Gudiel; Lourdes Soriano; Alba Font; María Victoria Borrachero; Jordi Paya; José Maria Monzó. 2020. "Formulation of Alkali-Activated Slag Binder Destined for Use in Developing Countries." Applied Sciences 10, no. 24: 9088.

Journal article
Published: 24 November 2020 in Sustainability
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Soil stabilization using cementing materials is a well-known procedure for earth-based building blocks preparation. For the selected binding materials, innovation usually focuses on low carbon systems, many of which are based on alkaline activation. In the present paper, blast furnace slag (BFS) is used as a mineral precursor, and the innovative alkali activator was olive stone biomass ash (OBA). This means that the most important component in CO2 emissions terms, which is the alkali activator, has been replaced with a greener alternative: OBA. The OBA/BFS mixture was used to prepare compacted dolomitic soil blocks. These specimens were mechanically characterized by compression, and water strength coefficient and water absorption were assessed. The microstructure of blocks and the formation of cementing hydrates were analyzed by field emission scanning electron microscopy and thermogravimetry, respectively. The final compressive strength of the 120-day cured blocks was 27.8 MPa. It was concluded that OBA is a sustainable alkali activator alternative for producing BFS-stabilized soil-compacted blocks: CO2 emissions were 3.3 kgCO2/ton of stabilized soil, which is 96% less than that for ordinary Portland cement (OPC) stabilization.

ACS Style

Jordi Payá; José Monzó; Josefa Roselló; María Borrachero; Alba Font; Lourdes Soriano. Sustainable Soil-Compacted Blocks Containing Blast Furnace Slag (BFS) Activated with Olive Stone BIOMASS Ash (OBA). Sustainability 2020, 12, 9824 .

AMA Style

Jordi Payá, José Monzó, Josefa Roselló, María Borrachero, Alba Font, Lourdes Soriano. Sustainable Soil-Compacted Blocks Containing Blast Furnace Slag (BFS) Activated with Olive Stone BIOMASS Ash (OBA). Sustainability. 2020; 12 (23):9824.

Chicago/Turabian Style

Jordi Payá; José Monzó; Josefa Roselló; María Borrachero; Alba Font; Lourdes Soriano. 2020. "Sustainable Soil-Compacted Blocks Containing Blast Furnace Slag (BFS) Activated with Olive Stone BIOMASS Ash (OBA)." Sustainability 12, no. 23: 9824.

Journal article
Published: 26 August 2020 in Journal of Cleaner Production
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Reusing ceramic waste as a pozzolanic admixture may offer environmental benefits as it allows the reduction in the consumption of natural resources and energy, and the reduction of CO2 emissions associated with Portland cement (PC) production, while valorising waste materials with a long biodegradation period. This paper assessed the pozzolanic activity of three different ceramic waste types: red clay bricks (RCB), ceramic tiles (TCW) and ceramic sanitary-ware (CSW). After adapting their particle size by crushing and milling, each was used to replace 0 to 50 wt% PC (CEM I 42.5 R type). The milled powders were characterised by laser diffraction, field emission scanning electron microscopy (FESEM), X-ray fluorescence (XRF) and X-ray diffraction (XRD), and consistency and setting time tests were used to investigate the fresh behaviour of the ceramic waste/PC blended pastes. A basic sustainability analysis was performed, and the pozzolanic activity of RCB, TCW and CSW was assessed by compressive strength tests (performed in mortars cured at room temperature from 3 to 365 days) and microstructural analyses (thermogravimetry, XRD and FESEM performed in the pastes cured at 20 °C for 28 and 90 days). The pozzolanic reaction of these waste materials improved with curing time, and all the mortars prepared with up to 25 wt% RCB, TCW or CSW met the mechanical requirements set out for coal fly ashes, whatever the ceramic waste type used. Among them, these results open up the possibility of partially replacing PC with the closest available ceramic waste, which would reduce the CO2 emissions and economic cost deriving from transporting waste.

ACS Style

A.M. Pitarch; L. Reig; A.E. Tomás; G. Forcada; L. Soriano; M.V. Borrachero; J. Payá; J.M. Monzó. Pozzolanic activity of tiles, bricks and ceramic sanitary-ware in eco-friendly Portland blended cements. Journal of Cleaner Production 2020, 279, 123713 .

AMA Style

A.M. Pitarch, L. Reig, A.E. Tomás, G. Forcada, L. Soriano, M.V. Borrachero, J. Payá, J.M. Monzó. Pozzolanic activity of tiles, bricks and ceramic sanitary-ware in eco-friendly Portland blended cements. Journal of Cleaner Production. 2020; 279 ():123713.

Chicago/Turabian Style

A.M. Pitarch; L. Reig; A.E. Tomás; G. Forcada; L. Soriano; M.V. Borrachero; J. Payá; J.M. Monzó. 2020. "Pozzolanic activity of tiles, bricks and ceramic sanitary-ware in eco-friendly Portland blended cements." Journal of Cleaner Production 279, no. : 123713.

Journal article
Published: 31 May 2020 in Journal of Cleaner Production
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This paper focuses on investigating greener alternatives of cellular concrete technology to fulfil current searches for a shift to circular economy. A novel one-part eco-cellular concrete (ECC-OP) was developed and studied. The one-part alkali activated materials (AAM-OP) and new alkali-activated cellular concrete (AACC) technologies were combined to develop greener alternative of cellular concrete production. The progressive steps from traditional cellular concrete (TCC) based on ordinary Portland cement (OPC) and commercial aluminium powder (A) to a 100% waste-based cellular concrete are presented. Blast furnace slag (BFS) was the precursor, RHA was employed as the silica source, olive stone biomass ash (OBA) was the alkali source and recycled aluminium foil (AR) was employed as an aerating agent. The functional features of the materials were studied and compared to those established by the European standard and the American Concrete Institute (ACI) Committee 523 guides. The new ECC-OP with a bulk density, compressive strength and thermal conductivity that respectively equal 660 kg/m3, 6.3 MPa and 0.20 W/mK was obtained. Finally, a cradle-to-gate life cycle assessment (LCA) was made, where the industrial process of a masonry unit manufacture was raised by using each studied material. A 96% reduction in the kgCO2eq per m3 of material was reached with the new proposed ECC-OP compared to TCC manufacturing.

ACS Style

Alba Font; Lourdes Soriano; Mauro M. Tashima; José Monzó; María Victoria Borrachero; Jordi Payá. One-part eco-cellular concrete for the precast industry: Functional features and life cycle assessment. Journal of Cleaner Production 2020, 269, 122203 .

AMA Style

Alba Font, Lourdes Soriano, Mauro M. Tashima, José Monzó, María Victoria Borrachero, Jordi Payá. One-part eco-cellular concrete for the precast industry: Functional features and life cycle assessment. Journal of Cleaner Production. 2020; 269 ():122203.

Chicago/Turabian Style

Alba Font; Lourdes Soriano; Mauro M. Tashima; José Monzó; María Victoria Borrachero; Jordi Payá. 2020. "One-part eco-cellular concrete for the precast industry: Functional features and life cycle assessment." Journal of Cleaner Production 269, no. : 122203.

Short communication
Published: 27 April 2020 in Materials Letters
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The use of almond-shell biomass ash (ABA) as an alkali source in one-part blast furnace slag (BFS) mortars activation was investigated for the first time. The chemical composition of ABA revealed high alkalinity ash to be composed mainly of K2O and CaO. The one-part 100% waste-based mortars and pastes were studied by mechanical and thermogravimetric tests. The compressive strength values of the newly designed materials were higher than the mortars fabricated with commercial products (36.4 versus 21.2 MPa). The formation of C-S-H/(C,K)-A-S-H gels took place in the thermogravimetric studies. The use of ABA in mortars proved an interesting alternative to chemical reagents in alkali activated cements.

ACS Style

Lourdes Soriano; Alba Font; Mauro M. Tashima; José Monzó; María Victoria Borrachero; Jordi Payá. One-part blast furnace slag mortars activated with almond-shell biomass ash: A new 100% waste-based material. Materials Letters 2020, 272, 127882 .

AMA Style

Lourdes Soriano, Alba Font, Mauro M. Tashima, José Monzó, María Victoria Borrachero, Jordi Payá. One-part blast furnace slag mortars activated with almond-shell biomass ash: A new 100% waste-based material. Materials Letters. 2020; 272 ():127882.

Chicago/Turabian Style

Lourdes Soriano; Alba Font; Mauro M. Tashima; José Monzó; María Victoria Borrachero; Jordi Payá. 2020. "One-part blast furnace slag mortars activated with almond-shell biomass ash: A new 100% waste-based material." Materials Letters 272, no. : 127882.

Journal article
Published: 24 September 2019 in Journal of Cleaner Production
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Alkali-activated cements (AACs) technology is being widely investigated as a replacement for ordinary Portland cement (OPC) for environmental benefits. Blast furnace slag (BFS) is one of the most well known precursors used in AACs, having comparable properties to those of traditional OPC-based materials. AACs require alkali solutions, which are commonly based on a combination of sodium or potassium hydroxides with sodium or potassium silicates in high concentration. These alkali solutions represent the use of chemical reagents, and thus can have major environmental, health and economic impacts. Olive-stone (also known as olive pits) biomass ash (OBA) is a residue mainly composed of calcium and potassium oxides. Rice husk ash (RHA) is a rich silica residue from the combustion of rice husk. The combination of both residues can produce a good activating reagent for BFS-based AACs. In the present work, 100% waste-based ternary alkali-activated mortars (TAAM) based on BFS activated by OBA and RHA were developed. The mortars were assessed in terms of their dosage, curing treatment and time evolution. Finally an eco-friendly 100% waste-based TAAM with 67.39 ± 0.44 MPa after 90 days of curing at 20ºC is obtained and a complete microstructural characterization shows a dense and compact matrix with binding gel products labelled as C(K)-S(A)-H and C(K)-S-H.

ACS Style

Alba Font; Lourdes Soriano; Sayonara Maria De Moraes Pinheiro; Mauro M. Tashima; José Monzó; Maria Victoria Borrachero; Jordi Payá. Design and properties of 100% waste-based ternary alkali-activated mortars: Blast furnace slag, olive-stone biomass ash and rice husk ash. Journal of Cleaner Production 2019, 243, 118568 .

AMA Style

Alba Font, Lourdes Soriano, Sayonara Maria De Moraes Pinheiro, Mauro M. Tashima, José Monzó, Maria Victoria Borrachero, Jordi Payá. Design and properties of 100% waste-based ternary alkali-activated mortars: Blast furnace slag, olive-stone biomass ash and rice husk ash. Journal of Cleaner Production. 2019; 243 ():118568.

Chicago/Turabian Style

Alba Font; Lourdes Soriano; Sayonara Maria De Moraes Pinheiro; Mauro M. Tashima; José Monzó; Maria Victoria Borrachero; Jordi Payá. 2019. "Design and properties of 100% waste-based ternary alkali-activated mortars: Blast furnace slag, olive-stone biomass ash and rice husk ash." Journal of Cleaner Production 243, no. : 118568.

Special issue article
Published: 06 September 2019 in International Journal of Applied Ceramic Technology
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Alkali‐activated cements are widely studied as alternative and sustainable binder in soil stabilization. In this research work, a mold was designed and constructed, which allowed small cubic specimens to be made (40x40x40 mm3). With the newly designed mold, cubic samples of soil stabilized with Portland cement (OPC) and alternative AAC (based on spent fluid catalytic cracking catalyst FCC) were prepared from which compressive strength was obtained. Cylindrical specimens were also prepared using the same binders as in the previous case to obtain their compressive strength. The results obtained in both cases were compared. Greater resistances for cubic samples were achieved. The cubic specimens were selected for being better in terms of standard deviation of compressive strength for AAC stabilized soil. The obtained compressive strength and standard deviation results were compared between the soil specimens stabilized with different stabilizers cured at 7, 14, 28 and 90 days. The method allows small‐sized cubic specimens to be prepared. It improves ergonomics. It also facilitates a large number of specimens being obtained with a small amount of sample. Soil stabilized with AAC yielded higher compressive strength after 90 days compared to that with OPC. This article is protected by copyright. All rights reserved.

ACS Style

Juan Cosa; Lourdes Soriano; María Victoria Borrachero; Jordi Payá; José María Monzó. Stabilization of soil by means alternative alkali‐activated cement prepared with spent FCC catalyst. International Journal of Applied Ceramic Technology 2019, 17, 190 -196.

AMA Style

Juan Cosa, Lourdes Soriano, María Victoria Borrachero, Jordi Payá, José María Monzó. Stabilization of soil by means alternative alkali‐activated cement prepared with spent FCC catalyst. International Journal of Applied Ceramic Technology. 2019; 17 (1):190-196.

Chicago/Turabian Style

Juan Cosa; Lourdes Soriano; María Victoria Borrachero; Jordi Payá; José María Monzó. 2019. "Stabilization of soil by means alternative alkali‐activated cement prepared with spent FCC catalyst." International Journal of Applied Ceramic Technology 17, no. 1: 190-196.

Book chapter
Published: 01 January 2019 in New Trends in Eco-efficient and Recycled Concrete
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ACS Style

Jordi Payá; José Monzó; María Victoria Borrachero; Lourdes Soriano. Sewage sludge ash. New Trends in Eco-efficient and Recycled Concrete 2019, 121 -152.

AMA Style

Jordi Payá, José Monzó, María Victoria Borrachero, Lourdes Soriano. Sewage sludge ash. New Trends in Eco-efficient and Recycled Concrete. 2019; ():121-152.

Chicago/Turabian Style

Jordi Payá; José Monzó; María Victoria Borrachero; Lourdes Soriano. 2019. "Sewage sludge ash." New Trends in Eco-efficient and Recycled Concrete , no. : 121-152.

Journal article
Published: 19 November 2018 in Sustainability
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Arundo donax is a plant native to Asia and is considered an invader species in the Mediterranean region and many tropical zones in the world. These invader plants can be collected to produce a biomass, which can be converted to ash by combustion. The scope of the study is to assess the use of these ashes (Arundo donax straw ash [ADSA]) as supplementary cementing material due to their relatively high silica content. Electron microscopy studies on dried and calcined samples of different plant parts (cane, sheath leaf and leaf) were carried out. Some different cellular structures were identified in the spodogram (remaining skeleton after calcination). Major silica content was found in leaves and sheath leaves. The main element in all the ashes studied, together with oxygen, was potassium (22 to 46% depending on the part of the plant). Chloride content was also high (5–13%), which limits their use to non-steel reinforced concrete. The pozzolanic reactivity of ADSA was assessed in pastes by thermogravimetric analysis and in mortars with ordinary Portland cement based on compressive strength development. Excellent results were found in terms of reactivity.

ACS Style

Jordi Payá; Josefa Roselló; José María Monzó; Alejandro Escalera; María Pilar Santamarina; María Victoria Borrachero; Lourdes Soriano. An Approach to a New Supplementary Cementing Material: Arundo donax Straw Ash. Sustainability 2018, 10, 4273 .

AMA Style

Jordi Payá, Josefa Roselló, José María Monzó, Alejandro Escalera, María Pilar Santamarina, María Victoria Borrachero, Lourdes Soriano. An Approach to a New Supplementary Cementing Material: Arundo donax Straw Ash. Sustainability. 2018; 10 (11):4273.

Chicago/Turabian Style

Jordi Payá; Josefa Roselló; José María Monzó; Alejandro Escalera; María Pilar Santamarina; María Victoria Borrachero; Lourdes Soriano. 2018. "An Approach to a New Supplementary Cementing Material: Arundo donax Straw Ash." Sustainability 10, no. 11: 4273.

Journal article
Published: 16 October 2018 in Microscopy and Microanalysis
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Many agrowastes are being used for energy production by combustion in power plants. This process generates huge amounts of ash, which has a potential pozzolanic activity for blending with Portland cement or hydrated lime. In this paper, the ash obtained from elephant grass (Pennisetum purpureum Schum var. purple) leaves (EGLs) was studied, including the silicon content and its distribution, the presence of other compounds, and in addition, the presence of silica bodies (phytoliths). Combustion temperatures of 450 and 650°C produced an unaltered inorganic skeleton (spodogram), whereas at 850°C, there is a sintering process because of high potassium content in the ash. Phytoliths and different types of hairs were identified, and they contained high percentages of silica. Magnesium (mainly as periclase) was distributed in the most porous parts in the interior of the leaves. The silica can react with calcium hydroxide (pozzolanic reaction) forming calcium silicate hydrates (observed by field-emission scanning electron microscopy and thermogravimetric analysis). Fixed lime percentages at 28 curing days (63%) indicated the high reactivity of EGL ashes in calcium hydroxide pastes due to the pozzolanic reaction. This study demonstrates the possibility of the reuse of ashes from EGLs for the production of environmental-friendly cements.

ACS Style

Josefa Roselló; Lourdes Soriano; Holmer Savastano; M. Victoria Borrachero; Pilar Santamarina; Jordi Payá. Microscopic Chemical Characterization and Reactivity in Cementing Systems of Elephant Grass Leaf Ashes. Microscopy and Microanalysis 2018, 24, 593 -603.

AMA Style

Josefa Roselló, Lourdes Soriano, Holmer Savastano, M. Victoria Borrachero, Pilar Santamarina, Jordi Payá. Microscopic Chemical Characterization and Reactivity in Cementing Systems of Elephant Grass Leaf Ashes. Microscopy and Microanalysis. 2018; 24 (6):593-603.

Chicago/Turabian Style

Josefa Roselló; Lourdes Soriano; Holmer Savastano; M. Victoria Borrachero; Pilar Santamarina; Jordi Payá. 2018. "Microscopic Chemical Characterization and Reactivity in Cementing Systems of Elephant Grass Leaf Ashes." Microscopy and Microanalysis 24, no. 6: 593-603.