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Development of Lightweight Mortars Using Sustainable Low-Density Glass Aggregates from Secondary Raw Materials

In this study, different lightweight expanded glass aggregates (LEGAs) were produced from glass cullet and various carbonated wastes, through a thermal impact process. The effects of LEGA microstructure and morphology on both the adherence to the cement paste and the mechanical properties of mortars...

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Autores principales: Romero, Maximina, Padilla, Isabel, García Calvo, José Luis, Carballosa, Pedro, Pedrosa, Filipe, López-Delgado, Aurora
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10532437/
https://www.ncbi.nlm.nih.gov/pubmed/37763558
http://dx.doi.org/10.3390/ma16186281
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author Romero, Maximina
Padilla, Isabel
García Calvo, José Luis
Carballosa, Pedro
Pedrosa, Filipe
López-Delgado, Aurora
author_facet Romero, Maximina
Padilla, Isabel
García Calvo, José Luis
Carballosa, Pedro
Pedrosa, Filipe
López-Delgado, Aurora
author_sort Romero, Maximina
collection PubMed
description In this study, different lightweight expanded glass aggregates (LEGAs) were produced from glass cullet and various carbonated wastes, through a thermal impact process. The effects of LEGA microstructure and morphology on both the adherence to the cement paste and the mechanical properties of mortars after 28 days of curing were studied. The properties of lightweight mortars made of either LEGAs or expanded clay aggregates were compared. The results demonstrated the feasibility of using LEGAs to produce glass lightweight aggregate mortar, with flexural and compressive strength values ranging from 5.5 to 8.2 MPa and from 28.1 to 47.6 MPa, respectively. The differences in mechanical properties were explained according to the microstructures of the fracture surfaces. Thus, arlite-type ceramic aggregates presented surface porosities that allowed mortar intrusion and the formation of an interconnected interface; although the surfaces of the vitreous aggregates were free from porosity due to their vitreous nature, the mortars obtained from different wastes presented compressive and flexural strengths in the range of lightweight mortars.
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spelling pubmed-105324372023-09-28 Development of Lightweight Mortars Using Sustainable Low-Density Glass Aggregates from Secondary Raw Materials Romero, Maximina Padilla, Isabel García Calvo, José Luis Carballosa, Pedro Pedrosa, Filipe López-Delgado, Aurora Materials (Basel) Article In this study, different lightweight expanded glass aggregates (LEGAs) were produced from glass cullet and various carbonated wastes, through a thermal impact process. The effects of LEGA microstructure and morphology on both the adherence to the cement paste and the mechanical properties of mortars after 28 days of curing were studied. The properties of lightweight mortars made of either LEGAs or expanded clay aggregates were compared. The results demonstrated the feasibility of using LEGAs to produce glass lightweight aggregate mortar, with flexural and compressive strength values ranging from 5.5 to 8.2 MPa and from 28.1 to 47.6 MPa, respectively. The differences in mechanical properties were explained according to the microstructures of the fracture surfaces. Thus, arlite-type ceramic aggregates presented surface porosities that allowed mortar intrusion and the formation of an interconnected interface; although the surfaces of the vitreous aggregates were free from porosity due to their vitreous nature, the mortars obtained from different wastes presented compressive and flexural strengths in the range of lightweight mortars. MDPI 2023-09-19 /pmc/articles/PMC10532437/ /pubmed/37763558 http://dx.doi.org/10.3390/ma16186281 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Romero, Maximina
Padilla, Isabel
García Calvo, José Luis
Carballosa, Pedro
Pedrosa, Filipe
López-Delgado, Aurora
Development of Lightweight Mortars Using Sustainable Low-Density Glass Aggregates from Secondary Raw Materials
title Development of Lightweight Mortars Using Sustainable Low-Density Glass Aggregates from Secondary Raw Materials
title_full Development of Lightweight Mortars Using Sustainable Low-Density Glass Aggregates from Secondary Raw Materials
title_fullStr Development of Lightweight Mortars Using Sustainable Low-Density Glass Aggregates from Secondary Raw Materials
title_full_unstemmed Development of Lightweight Mortars Using Sustainable Low-Density Glass Aggregates from Secondary Raw Materials
title_short Development of Lightweight Mortars Using Sustainable Low-Density Glass Aggregates from Secondary Raw Materials
title_sort development of lightweight mortars using sustainable low-density glass aggregates from secondary raw materials
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10532437/
https://www.ncbi.nlm.nih.gov/pubmed/37763558
http://dx.doi.org/10.3390/ma16186281
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