Reactivity of Binary Construction and Demolition Waste Mix as Supplementary Cementitious Materials

Calcareous and siliceous CDW wastes from concrete and glass wastes when mixed in binary mixtures has been analyzed in this study. Fine CDW fractions (<5 mm) of different sorts are selected: siliceous waste (HsT), calcareous waste (HcG) and laminated glass waste. The binary mixtures HsT/glass and...

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Autores principales:	Raquel Vigil de la Villa Mencía, Moisés Frías Rojas, Sagrario Martínez-Ramírez, Lucía Fernández-Carrasco, Ernesto Villar Cociña, Rosario García-Giménez
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	CDW waste mix pozzolan reactivity glass hydrated phases evolution Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/898b2d3b8b5f4bad9467a608708ef50c
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spelling	oai:doaj.org-article:898b2d3b8b5f4bad9467a608708ef50c2021-11-11T18:03:38ZReactivity of Binary Construction and Demolition Waste Mix as Supplementary Cementitious Materials10.3390/ma142164811996-1944https://doaj.org/article/898b2d3b8b5f4bad9467a608708ef50c2021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6481https://doaj.org/toc/1996-1944Calcareous and siliceous CDW wastes from concrete and glass wastes when mixed in binary mixtures has been analyzed in this study. Fine CDW fractions (<5 mm) of different sorts are selected: siliceous waste (HsT), calcareous waste (HcG) and laminated glass waste. The binary mixtures HsT/glass and HcG/glass at mix-proportions of 1:1, 2:1 and 1:2, respectively, are analyzed with a range of characterization techniques (XRD, TG/DTA, SEM-EDX, NMR, FT-IR) in the pure pozzolan/lime system over a reaction time of 90 days. The results showed that the incorporation of highly reactive recycled glass modified the pozzolanic reaction of the binary mixtures with respect to each particular concrete waste (of low activity). The principal mineralogical phases of the reaction were calcite and C–S–H gel, the latter modifying the C/S and A/S ratios as a function of either the silica or the lime-based concrete waste and the glass content of the mixtures. A higher degree of polymerization, morphology, and sodium content of C-H-S gel formed when glass was added.Raquel Vigil de la Villa MencíaMoisés Frías RojasSagrario Martínez-RamírezLucía Fernández-CarrascoErnesto Villar CociñaRosario García-GiménezMDPI AGarticleCDW waste mixpozzolan reactivityglasshydrated phasesevolutionTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6481, p 6481 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	CDW waste mix pozzolan reactivity glass hydrated phases evolution Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	CDW waste mix pozzolan reactivity glass hydrated phases evolution Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Raquel Vigil de la Villa Mencía Moisés Frías Rojas Sagrario Martínez-Ramírez Lucía Fernández-Carrasco Ernesto Villar Cociña Rosario García-Giménez Reactivity of Binary Construction and Demolition Waste Mix as Supplementary Cementitious Materials
description	Calcareous and siliceous CDW wastes from concrete and glass wastes when mixed in binary mixtures has been analyzed in this study. Fine CDW fractions (<5 mm) of different sorts are selected: siliceous waste (HsT), calcareous waste (HcG) and laminated glass waste. The binary mixtures HsT/glass and HcG/glass at mix-proportions of 1:1, 2:1 and 1:2, respectively, are analyzed with a range of characterization techniques (XRD, TG/DTA, SEM-EDX, NMR, FT-IR) in the pure pozzolan/lime system over a reaction time of 90 days. The results showed that the incorporation of highly reactive recycled glass modified the pozzolanic reaction of the binary mixtures with respect to each particular concrete waste (of low activity). The principal mineralogical phases of the reaction were calcite and C–S–H gel, the latter modifying the C/S and A/S ratios as a function of either the silica or the lime-based concrete waste and the glass content of the mixtures. A higher degree of polymerization, morphology, and sodium content of C-H-S gel formed when glass was added.
format	article
author	Raquel Vigil de la Villa Mencía Moisés Frías Rojas Sagrario Martínez-Ramírez Lucía Fernández-Carrasco Ernesto Villar Cociña Rosario García-Giménez
author_facet	Raquel Vigil de la Villa Mencía Moisés Frías Rojas Sagrario Martínez-Ramírez Lucía Fernández-Carrasco Ernesto Villar Cociña Rosario García-Giménez
author_sort	Raquel Vigil de la Villa Mencía
title	Reactivity of Binary Construction and Demolition Waste Mix as Supplementary Cementitious Materials
title_short	Reactivity of Binary Construction and Demolition Waste Mix as Supplementary Cementitious Materials
title_full	Reactivity of Binary Construction and Demolition Waste Mix as Supplementary Cementitious Materials
title_fullStr	Reactivity of Binary Construction and Demolition Waste Mix as Supplementary Cementitious Materials
title_full_unstemmed	Reactivity of Binary Construction and Demolition Waste Mix as Supplementary Cementitious Materials
title_sort	reactivity of binary construction and demolition waste mix as supplementary cementitious materials
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/898b2d3b8b5f4bad9467a608708ef50c
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Reactivity of Binary Construction and Demolition Waste Mix as Supplementary Cementitious Materials

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