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Dr. Manuel Alejandro Pedreño Rojas
Departamento de Construcciones Arquitectónicas 1, Escuela Técnica Superior de Arquitectura, Universidad de Sevilla

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0 Building Materials
0 Environmental Analysis
0 Waste Management
0 sustainable construction and building materials
0 Eco-Efficient Construction Materials

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sustainable construction and building materials

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Journal article
Published: 14 April 2021 in Applied Sciences
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Biomaterials are materials that are used to manufacture devices that interact with biological systems. According to their chemical composition, they can be classified as biometals, biopolymers, bioceramics, biocomposites and semiconductors. Thus, in the present work, the application of bioceramics, enhanced with effective microorganisms, to construction materials (cement mortars and gypsum plasters) was studied in order to see the benefits that its incorporation contributes to construction materials. This first work constitutes the first phase of an experimental campaign in which the influence of bioceramics on the physical and mechanical properties (flexural and compressive strength) of the studied materials was analyzed. Furthermore, scanning electron microscopy (SEM) and mercury intrusion porosimetry (MIP) techniques were used. According to the results, a slight improvement in the mechanical properties of the new composites was observed. Besides, a more compact matrix was observed when bioceramics were used as an aggregate to the mixtures.

ACS Style

Filomena Pérez-Gálvez; María Morales-Conde; Manuel Pedreño-Rojas. Use of Bioceramics Enhanced with Effective Microorganisms as an Additive for Construction. Study of Physical and Mechanical Properties in Cement Mortars and Gypsum Plasters. Applied Sciences 2021, 11, 3519 .

AMA Style

Filomena Pérez-Gálvez, María Morales-Conde, Manuel Pedreño-Rojas. Use of Bioceramics Enhanced with Effective Microorganisms as an Additive for Construction. Study of Physical and Mechanical Properties in Cement Mortars and Gypsum Plasters. Applied Sciences. 2021; 11 (8):3519.

Chicago/Turabian Style

Filomena Pérez-Gálvez; María Morales-Conde; Manuel Pedreño-Rojas. 2021. "Use of Bioceramics Enhanced with Effective Microorganisms as an Additive for Construction. Study of Physical and Mechanical Properties in Cement Mortars and Gypsum Plasters." Applied Sciences 11, no. 8: 3519.

Conference paper
Published: 10 December 2020 in IOP Conference Series: Materials Science and Engineering
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Large amounts of different types of waste are generated each day in the world. Most of them do not receive proper management at the end of its useful life. In that sense, and trying to apply eco-efficiency criteria, the construction sector has recently been working on the design of new building materials that incorporate some types of residues. Those new construction materials improve some of the properties given by traditional options, such as thermal conductivity or lightness. However, many types of research in which new building products are generated do not exist. Subsequently, this paper aims at generating new gypsum plaster false ceiling plates by incorporating two different types of residues: wood waste from the demolition of traditional wooden slabs and polycarbonate (plastic) waste from crushed rejected CDs and DVDs. The flexural strength of the developed plates is tested using the procedure described by UNE-EN 14246. Furthermore, the thermal conductivity of the new pieces is obtained following the method defined by ASTM D5930-09. The results show that for all the scenarios under study when wood and plastic waste is added to the plates, the lightness and the thermal conductivity of the pieces improved. In addition, in some scenarios, the incorporation of polycarbonate waste is linked to an improvement in the mechanical behaviour of the pieces compared to the reference plate. On the other hand, when wood waste is added to the mixtures, the flexural behaviour of the plates decreases, but always achieving the minimum requirements made by the standards. Finally, it must be said that adding waste to the plasters, the amount of gypsum powder used to generate the plates decreases considerably, which represents a significant improvement in the eco-efficiency of new products.

ACS Style

Manuel Alejandro Pedreño-Rojas; María Jesús Morales-Conde; Filomena Pérez-Gálvez; María Isabel Romero-Gómez; Paloma Rubio-De-Hita. Eco-Efficient False Ceiling Plates Made from Plaster with Wood and Plastic Residues. IOP Conference Series: Materials Science and Engineering 2020, 960, 032055 .

AMA Style

Manuel Alejandro Pedreño-Rojas, María Jesús Morales-Conde, Filomena Pérez-Gálvez, María Isabel Romero-Gómez, Paloma Rubio-De-Hita. Eco-Efficient False Ceiling Plates Made from Plaster with Wood and Plastic Residues. IOP Conference Series: Materials Science and Engineering. 2020; 960 (3):032055.

Chicago/Turabian Style

Manuel Alejandro Pedreño-Rojas; María Jesús Morales-Conde; Filomena Pérez-Gálvez; María Isabel Romero-Gómez; Paloma Rubio-De-Hita. 2020. "Eco-Efficient False Ceiling Plates Made from Plaster with Wood and Plastic Residues." IOP Conference Series: Materials Science and Engineering 960, no. 3: 032055.

Journal article
Published: 11 October 2020 in Journal of Building Engineering
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The research carried out studies how the addition of plastic polypropylene fibers from recycled non-degradable wet wipes can influence on the physical and mechanical behavior of composites with a gypsum binder matrix. Four different plaster blends were studied, corresponding to percentages of 2, 2.5, 3 and 3.5% by weight of recycled plastic fibers. To characterize the different test specimens, properties such as density and strength (flexural and compressive) were determined. Also, in order to find out about the internal structure of the different composites developed at a microscopic level, a Scanning Electron Microscopy (SEM) test was performed. The results show that more efficient materials can be obtained with a little decrease in their density compared to the reference material (gypsum). However, the improvement in the novel composites’ mechanical properties represents one of the most notable achievement of the study. A flexural strength rise of a 19% was achieved for mixtures with 2,5% of recycled PP fibers compared to the reference specimen. These results confirm the feasibility of using the gypsum composites produced for the design of new construction products and its application in building systems as wall and ceiling lining.

ACS Style

M.I. Romero-Gómez; M.A. Pedreño-Rojas; F. Pérez-Gálvez; P. Rubio-De-Hita. Characterization of gypsum composites with polypropylene fibers from non-degradable wet wipes. Journal of Building Engineering 2020, 34, 101874 .

AMA Style

M.I. Romero-Gómez, M.A. Pedreño-Rojas, F. Pérez-Gálvez, P. Rubio-De-Hita. Characterization of gypsum composites with polypropylene fibers from non-degradable wet wipes. Journal of Building Engineering. 2020; 34 ():101874.

Chicago/Turabian Style

M.I. Romero-Gómez; M.A. Pedreño-Rojas; F. Pérez-Gálvez; P. Rubio-De-Hita. 2020. "Characterization of gypsum composites with polypropylene fibers from non-degradable wet wipes." Journal of Building Engineering 34, no. : 101874.

Journal article
Published: 08 July 2020 in Materials
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The use of gypsum as an indoor coating material for buildings is very extensive. This means that huge amounts of gypsum waste are generated daily worldwide. Therefore, many researchers in the last years have been working on the generation of new gypsum-related materials and products that incorporate recycled gypsum waste as a replacement for the commercial one. On the other hand, trying to reduce the large amounts of plastic generated globally each year, several studies have used different types of plastic waste as aggregates for the development of new construction and building materials. However, up to now, no previous studies have been found in which any type of plastic waste has been used as an aggregate in a recycled gypsum matrix. This paper presents a study in which two different types of waste were mixed for the development of new gypsum plasters: unheated gypsum waste from industrial plasterboard production (GPW) and polycarbonate (PC) waste from rejected compact discs (CDs) and digital versatile discs (DVDs). In this sense, the mechanical and thermal performance of plasters was evaluated. Finally, in order to evaluate the changes in the microstructure of the composites, a scanning electron microscopy (SEM) analysis was conducted. The results showed a good performance of the new composites when both types of waste were combined in the mixes. New lightweight eco-efficient plasters, completely recycled, with enhanced flexural strength (by 14.8%), compressive strength (by 26.8%), and thermal conductivity (42.8% less), compared to the reference material, were achieved.

ACS Style

Manuel Alejandro Pedreño-Rojas; Carmen Rodríguez-Liñán; Inês Flores-Colen; Jorge De Brito. Use of Polycarbonate Waste as Aggregate in Recycled Gypsum Plasters. Materials 2020, 13, 3042 .

AMA Style

Manuel Alejandro Pedreño-Rojas, Carmen Rodríguez-Liñán, Inês Flores-Colen, Jorge De Brito. Use of Polycarbonate Waste as Aggregate in Recycled Gypsum Plasters. Materials. 2020; 13 (14):3042.

Chicago/Turabian Style

Manuel Alejandro Pedreño-Rojas; Carmen Rodríguez-Liñán; Inês Flores-Colen; Jorge De Brito. 2020. "Use of Polycarbonate Waste as Aggregate in Recycled Gypsum Plasters." Materials 13, no. 14: 3042.

Journal article
Published: 22 February 2020 in Materials
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The continuous and rapid evolution in the field of computing, and in particular in the field of storage devices, has led to the obsolescence of optical discs in favour of mass storage devices. In that sense, a large number of CDs and DVDs become obsolete each day in the world. In trying to create a recovery solution for those pieces, research in which polycarbonate (PC) waste from recycled discs have been used to develop new gypsum coating materials and products has been conducted. In a previous study, the physical and mechanical properties of new gypsum plasters, with PC waste as aggregate, were studied. Following that study, this article aims at creating new gypsum plaster false ceiling plates, using CD and DVD residues in different scenarios: as crushed aggregate in the gypsum matrix, as full reinforcement pieces of the plates and as a combination of both. The mechanical behaviour and the thermal conductivity of the new pieces have been analysed in this paper. The results showed an important improvement in the mechanical and thermal properties of the plates when the PC waste was used in many scenarios.

ACS Style

Manuel Alejandro Pedreño-Rojas; María Jesús Morales-Conde; Filomena Pérez-Gálvez; Paloma Rubio-De-Hita. Reuse of CD and DVD Wastes as Reinforcement in Gypsum Plaster Plates. Materials 2020, 13, 989 .

AMA Style

Manuel Alejandro Pedreño-Rojas, María Jesús Morales-Conde, Filomena Pérez-Gálvez, Paloma Rubio-De-Hita. Reuse of CD and DVD Wastes as Reinforcement in Gypsum Plaster Plates. Materials. 2020; 13 (4):989.

Chicago/Turabian Style

Manuel Alejandro Pedreño-Rojas; María Jesús Morales-Conde; Filomena Pérez-Gálvez; Paloma Rubio-De-Hita. 2020. "Reuse of CD and DVD Wastes as Reinforcement in Gypsum Plaster Plates." Materials 13, no. 4: 989.

Journal article
Published: 09 January 2020 in Journal of Cleaner Production
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Spain occupies a very prominent position as a world producer of gypsum. Consequently, the industrial processes are more refined, as the production volumes of the factories are much higher than in other countries. Therefore, the environmental impacts of the production of one ton of gypsum are significantly lower. However, new cleaner alternatives must be studied to promote more sustainable construction. In that sense, this paper aims at studying the environmental assessment of the production of natural and recycled gypsum in the Spanish context. In order to conduct the environmental analysis, a from cradle to gate life cycle assessment (LCA) was carried out, using the Impact 2002 + methodology. All the input data was obtained from a medium-size gypsum manufacturer located in Jaen (Andalusia), one of the best regions in terms of gypsum purity. The results for all the scenarios under study were analyzed separately and compared with previous studies published by other investigators and manufacturers’ reports data. Contrary to most other previous researches, the LCA was performed on the basis of primary data given by the producer, and the regional factors were also taken into account. The results achieved in the LCA showed for the production of recycled gypsum (from plasterboard and powder waste) a significant improvement (more than 40%) in all the impact categories understudy, as compared to the natural gypsum production. Furthermore, the results obtained for the endpoint indicators showed an important reduction (56 and 58%) of the environmental impacts when recycled gypsum production was compared with the natural one. On the other hand, it was reaffirmed that the natural gypsum production process in Spain is less environmentally harmful than in other countries.

ACS Style

M.A. Pedreño-Rojas; J. Fořt; Robert Cerny; P. Rubio-De-Hita. Life cycle assessment of natural and recycled gypsum production in the Spanish context. Journal of Cleaner Production 2020, 253, 120056 .

AMA Style

M.A. Pedreño-Rojas, J. Fořt, Robert Cerny, P. Rubio-De-Hita. Life cycle assessment of natural and recycled gypsum production in the Spanish context. Journal of Cleaner Production. 2020; 253 ():120056.

Chicago/Turabian Style

M.A. Pedreño-Rojas; J. Fořt; Robert Cerny; P. Rubio-De-Hita. 2020. "Life cycle assessment of natural and recycled gypsum production in the Spanish context." Journal of Cleaner Production 253, no. : 120056.

Journal article
Published: 25 December 2019 in Journal of Building Engineering
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The construction sector consumes 95% of the total production of gypsum due to its multiple applications. Gypsum plaster is one of the most common indoor coating material (pastes and mortars), but it can also be used in prefabricated products like plasterboards, blocks and decorative elements. Gypsum waste recycling provides a solution to an important environmental problem from the use of gypsum plaster, which is the generation of large amounts of wastes at different phases (production, construction, rehabilitation and demolition). This paper studies two different replacement alternatives of natural gypsum: Flue Gas Desulphurization (FGD) gypsum and gypsum waste obtained from industrial plasterboard production. The influence of the previous types, amounts of waste (25, 50, 75 and 100 wt%) and different heating temperatures (100 °C, 150 °C and 180 °C) and processes on the workability of gypsum plasters is evaluated and discussed, based on a microstructure analysis using XRD and SEM techniques. This research highlights the feasibility, in terms of workability, of using Gypsum Plasterboard Waste (GPW), without any heating process, as a replacement gypsum in plasters. Despite the fact that a higher amount of water was necessary in the production of the mixes, a good workability was achieved. On the other hand, the unfeasibility of using unheated FGD as a constituent of plasters was demonstrated. However, a good performance, in terms of workability, of the FGD was obtained when the powder was subjected to a heating process at 180 °C during 6 h.

ACS Style

M.A. Pedreño-Rojas; Jorge de Brito; Inês Flores-Colen; M.F.C. Pereira; P. Rubio-De-Hita. Influence of gypsum wastes on the workability of plasters: Heating process and microstructural analysis. Journal of Building Engineering 2019, 29, 101143 .

AMA Style

M.A. Pedreño-Rojas, Jorge de Brito, Inês Flores-Colen, M.F.C. Pereira, P. Rubio-De-Hita. Influence of gypsum wastes on the workability of plasters: Heating process and microstructural analysis. Journal of Building Engineering. 2019; 29 ():101143.

Chicago/Turabian Style

M.A. Pedreño-Rojas; Jorge de Brito; Inês Flores-Colen; M.F.C. Pereira; P. Rubio-De-Hita. 2019. "Influence of gypsum wastes on the workability of plasters: Heating process and microstructural analysis." Journal of Building Engineering 29, no. : 101143.

Conference paper
Published: 18 September 2019 in IOP Conference Series: Materials Science and Engineering
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Large amounts of waste are generated each day in the world, being a major concern for the EU28, who establish waste management as a priority line of work within the Horizon 2020. Construction sector is one of the largest residues generators. In that sense, architects and civil engineers should give an answer to solve that environmental problem. One of the options is to reuse waste for the generation of new materials and products for construction. In this research, wood waste (sawdust) from demolition works and polycarbonate waste have been used as aggregates to generate new gypsum plasters. Different percentages of additions (5, 10, 20 and 40%) for each type of waste have been conducted to develop the gypsum composites. Physical (density and thermal conductivity) and mechanical (flexural and compressive strength) properties of the new plasters have been measured using the procedure regulated by standards, comparing them with the reference material values (commercial gypsum without aggregates). The results of the tests show that lighter composites have been obtained when the percentage of waste increased for both type of aggregate. This lightening is higher in composites with wood waste than in those with plastic at the same percentage of addition. Furthermore, an improvement in the thermal conductivity of the plasters have been achieved. On the other hand, a decrease on the mechanical properties of the composites, with higher percentages of additions, have been obtained. For all the cases, the minimum strength value required by standards have been achieved. As a conclusion, lighter gypsum composites with enhanced thermal properties have been obtained, achieving in all the cases an acceptable flexural and compressive strength.

ACS Style

Manuel Alejandro Pedreno-Rojas; Carmen Rodriguez-Linan; Maria Jesus Morales-Conde; Filomena Perez-Galvez; Paloma Rubio-De-Hita; Maria Isabel Romero-Gomez. Influence of Wood and Plastic Waste as Aggregates in Gypsum Plasters. IOP Conference Series: Materials Science and Engineering 2019, 603, 032032 .

AMA Style

Manuel Alejandro Pedreno-Rojas, Carmen Rodriguez-Linan, Maria Jesus Morales-Conde, Filomena Perez-Galvez, Paloma Rubio-De-Hita, Maria Isabel Romero-Gomez. Influence of Wood and Plastic Waste as Aggregates in Gypsum Plasters. IOP Conference Series: Materials Science and Engineering. 2019; 603 (3):032032.

Chicago/Turabian Style

Manuel Alejandro Pedreno-Rojas; Carmen Rodriguez-Linan; Maria Jesus Morales-Conde; Filomena Perez-Galvez; Paloma Rubio-De-Hita; Maria Isabel Romero-Gomez. 2019. "Influence of Wood and Plastic Waste as Aggregates in Gypsum Plasters." IOP Conference Series: Materials Science and Engineering 603, no. 3: 032032.

Journal article
Published: 05 June 2019 in Materials
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Large amounts of wood waste are generated each year in the world. In an attempt to identify a good recovery option for those residues, wood waste from construction and demolition works were used as raw materials in gypsum plasters. However, wood is a biodegradable material which implies that the products or materials that contain it are susceptible to suffering an important deterioration, due to exposure in certain environments. For that reason, the aim of this work was to simulate the effects that, in the long term, the atmospheric exposure of wood waste–gypsum composites would have. To do that, the plasters were subjected to 5, 10, and 15 wetting–drying cycles in a climatic chamber. In this study, the density, flexural and compressive strength, and ultrasonic velocity of these composites were determined by the influence of the aging process on their mechanical properties. Furthermore, in order to detect changes on their internal structure, scanning electron microscopy tests (SEM) were used. The results showed that they were suitable to be used as indoor coverings of buildings. However, a treatment to reduce the moisture absorption of the wood waste must be studied if mixtures with high percentages of wood shavings (WS20) are used in wet rooms.

ACS Style

Manuel Alejandro Pedreño-Rojas; María Jesús Morales-Conde; Paloma Rubio-De-Hita; Filomena Pérez-Gálvez. Impact of Wetting–Drying Cycles on the Mechanical Properties and Microstructure of Wood Waste–Gypsum Composites. Materials 2019, 12, 1829 .

AMA Style

Manuel Alejandro Pedreño-Rojas, María Jesús Morales-Conde, Paloma Rubio-De-Hita, Filomena Pérez-Gálvez. Impact of Wetting–Drying Cycles on the Mechanical Properties and Microstructure of Wood Waste–Gypsum Composites. Materials. 2019; 12 (11):1829.

Chicago/Turabian Style

Manuel Alejandro Pedreño-Rojas; María Jesús Morales-Conde; Paloma Rubio-De-Hita; Filomena Pérez-Gálvez. 2019. "Impact of Wetting–Drying Cycles on the Mechanical Properties and Microstructure of Wood Waste–Gypsum Composites." Materials 12, no. 11: 1829.

Journal article
Published: 20 March 2019 in Materiales de Construcción
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This study analyses a procedure to manufacture mortars with different percentages of ceramic waste as partial replacement for aggregates. The study also examines the physical, chemical and mechanical properties of the new mortars, analysing substitution ratios that range from 10% to 50%. Prior to this, all the materials used in the production of the mortar were characterised using X-ray diffraction (XRD) and fluorescence (XRF). The objective was to determine the similarity between different types of ceramic waste, as well as the differences in the minerology and chemical composition with the aggregate. The results of the study show that it is possible to obtain mortars with lower densities compared to the same product with no recycled content. The product’s characteristics make it ideal for the manufacture of prefabricated components for structural floors for rehabilitation works. Finally, the pieces are used in a real rehabilitation case study, highlightining the structural advantages.

ACS Style

P. Rubio De Hita; F. Pérez-Gálvez; M. J. Morales-Conde; M. A. Pedreño-Rojas. Characterisation of recycled ceramic mortars for use in prefabricated beam-filling pieces in structural floors. Materiales de Construcción 2019, 69, 189 .

AMA Style

P. Rubio De Hita, F. Pérez-Gálvez, M. J. Morales-Conde, M. A. Pedreño-Rojas. Characterisation of recycled ceramic mortars for use in prefabricated beam-filling pieces in structural floors. Materiales de Construcción. 2019; 69 (334):189.

Chicago/Turabian Style

P. Rubio De Hita; F. Pérez-Gálvez; M. J. Morales-Conde; M. A. Pedreño-Rojas. 2019. "Characterisation of recycled ceramic mortars for use in prefabricated beam-filling pieces in structural floors." Materiales de Construcción 69, no. 334: 189.

Journal article
Published: 31 January 2019 in Journal of Cleaner Production
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This work analyzes the influence of added plastic polycarbonate waste from recycled compact discs (CDs) and digital optical disc (DVDs) on the mechanical and environmental properties of composites with a gypsum matrix. Fifteen mixtures were produced including different percentages by weight of plastic aggregate with two different granulometries. In each case, the strength properties (flexural and compressive) and density of the new composites were tested. In addition, scanning electron microscopy (SEM) and X-ray computed tomography (XCT) were performed in order to know the internal structure and porosity of the new composites. Finally, a simplified environmental study was conducted using the Life Cycle Assessment (LCA) method. The results show that lighter and more eco-efficient materials can be obtained that have, in some cases, better mechanical properties than the reference material (gypsum). A density reduction of a 9.89% was achieved for mixtures with 60% of plastic waste, having also an environmental improvement of 35% compared to the reference sample. In all the cases, the minimum values for mechanical properties required by the standard were obtained. These properties make the composites suitable for use in new products and in construction works.

ACS Style

M.A. Pedreño-Rojas; M.J. Morales-Conde; F. Pérez-Gálvez; P. Rubio-De-Hita. Influence of polycarbonate waste on gypsum composites: Mechanical and environmental study. Journal of Cleaner Production 2019, 218, 21 -37.

AMA Style

M.A. Pedreño-Rojas, M.J. Morales-Conde, F. Pérez-Gálvez, P. Rubio-De-Hita. Influence of polycarbonate waste on gypsum composites: Mechanical and environmental study. Journal of Cleaner Production. 2019; 218 ():21-37.

Chicago/Turabian Style

M.A. Pedreño-Rojas; M.J. Morales-Conde; F. Pérez-Gálvez; P. Rubio-De-Hita. 2019. "Influence of polycarbonate waste on gypsum composites: Mechanical and environmental study." Journal of Cleaner Production 218, no. : 21-37.

Journal article
Published: 09 January 2019 in Journal of Cleaner Production
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Gypsum is widely used in the construction sector in internal coatings. The fact that the chemical composition of gypsum does not change makes the material fully and eternally recyclable, potentially solving the important problem of the large amounts of gypsum waste that each year go to landfills. Up to now, most of the works that use gypsum wastes subjected the material to a previous heating process. This implies a significant energy consumption, reducing the environmental benefits of the recycling process. This paper shows the second part of a research on which two different types of gypsum waste were used as a substitute of commercial gypsum: gypsum waste from industrial plasterboard production and flue gas desulphurization gypsum from a thermal central plant. In this research, the influence of the heating process on the development of new gypsum plaster composites containing different types and contents of waste was studied. Their mechanical properties and thermal conductivity were determined and a brief environmental analysis, using the Life Cycle Assessment method, was carried out. Based on the findings of this paper, it is confirmed that it is possible to substitute 100% of commercial gypsum with gypsum waste from industrial plasterboard production without any heating treatment, but maintaining a good performance. With this action, apart from the benefits in terms of environmental impacts, a slight improvement in the density, mechanical properties and thermal conductivity of the plaster was obtained.

ACS Style

M.A. Pedreño-Rojas; Inês Flores-Colen; Jorge de Brito; Carmen Rodríguez-Liñán. Influence of the heating process on the use of gypsum wastes in plasters: Mechanical, thermal and environmental analysis. Journal of Cleaner Production 2019, 215, 444 -457.

AMA Style

M.A. Pedreño-Rojas, Inês Flores-Colen, Jorge de Brito, Carmen Rodríguez-Liñán. Influence of the heating process on the use of gypsum wastes in plasters: Mechanical, thermal and environmental analysis. Journal of Cleaner Production. 2019; 215 ():444-457.

Chicago/Turabian Style

M.A. Pedreño-Rojas; Inês Flores-Colen; Jorge de Brito; Carmen Rodríguez-Liñán. 2019. "Influence of the heating process on the use of gypsum wastes in plasters: Mechanical, thermal and environmental analysis." Journal of Cleaner Production 215, no. : 444-457.

Journal article
Published: 17 July 2018 in Journal of Cleaner Production
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This work describes the procedure for manufacturing a beam-filling piece for the construction and/or rehabilitation of traditional timber-beam floor structures using pieces made of cement mortars with aggregates consisting of mixed polypropylene plastic (PP) waste from urban waste collection plants. Before the piece was manufactured, a series of mortars was produced with aggregates of recycled plastic as partial substitute for natural aggregates, in percentages ranging from 5 to 15% in weight. These mortars were characterized in both fresh and hardened state by analysing their physical and mechanical properties. The results helped determine the best dosage for achieving the levels of resistance required by law for infill pieces. Finally, the pieces were defined in geometric terms following the analysis of the geometric and construction characteristics of the traditional floor structures, by establishing the necessary interjoists and cants.

ACS Style

P. Rubio-De Hita; F. Pérez-Gálvez; M.J. Morales-Conde; M.A. Pedreño-Rojas. Reuse of plastic waste of mixed polypropylene as aggregate in mortars for the manufacture of pieces for restoring jack arch floors with timber beams. Journal of Cleaner Production 2018, 198, 1515 -1525.

AMA Style

P. Rubio-De Hita, F. Pérez-Gálvez, M.J. Morales-Conde, M.A. Pedreño-Rojas. Reuse of plastic waste of mixed polypropylene as aggregate in mortars for the manufacture of pieces for restoring jack arch floors with timber beams. Journal of Cleaner Production. 2018; 198 ():1515-1525.

Chicago/Turabian Style

P. Rubio-De Hita; F. Pérez-Gálvez; M.J. Morales-Conde; M.A. Pedreño-Rojas. 2018. "Reuse of plastic waste of mixed polypropylene as aggregate in mortars for the manufacture of pieces for restoring jack arch floors with timber beams." Journal of Cleaner Production 198, no. : 1515-1525.

Journal article
Published: 01 November 2017 in Journal of Cleaner Production
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ACS Style

Manuel Alejandro Pedreño Rojas; María Jesús Morales-Conde; Filomena Pérez Galvez; Carmen Rodríguez-Liñán. Eco-efficient acoustic and thermal conditioning using false ceiling plates made from plaster and wood waste. Journal of Cleaner Production 2017, 166, 690 -705.

AMA Style

Manuel Alejandro Pedreño Rojas, María Jesús Morales-Conde, Filomena Pérez Galvez, Carmen Rodríguez-Liñán. Eco-efficient acoustic and thermal conditioning using false ceiling plates made from plaster and wood waste. Journal of Cleaner Production. 2017; 166 ():690-705.

Chicago/Turabian Style

Manuel Alejandro Pedreño Rojas; María Jesús Morales-Conde; Filomena Pérez Galvez; Carmen Rodríguez-Liñán. 2017. "Eco-efficient acoustic and thermal conditioning using false ceiling plates made from plaster and wood waste." Journal of Cleaner Production 166, no. : 690-705.

Journal article
Published: 01 July 2016 in Construction and Building Materials
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ACS Style

M.J. Morales-Conde; Carmen Rodríguez-Liñán; Manuel Alejandro Pedreño Rojas. Physical and mechanical properties of wood-gypsum composites from demolition material in rehabilitation works. Construction and Building Materials 2016, 114, 6 -14.

AMA Style

M.J. Morales-Conde, Carmen Rodríguez-Liñán, Manuel Alejandro Pedreño Rojas. Physical and mechanical properties of wood-gypsum composites from demolition material in rehabilitation works. Construction and Building Materials. 2016; 114 ():6-14.

Chicago/Turabian Style

M.J. Morales-Conde; Carmen Rodríguez-Liñán; Manuel Alejandro Pedreño Rojas. 2016. "Physical and mechanical properties of wood-gypsum composites from demolition material in rehabilitation works." Construction and Building Materials 114, no. : 6-14.