Utilization of gypsum from construction and demolition waste in Portland cement mortar
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/0366-6913201965S12588 http://hdl.handle.net/11449/190351 |
Resumo: | Civil construction generates the largest amount of construction and demolition waste (CDW), most of which is not reused and is discarded as inert waste in landfills. The purpose of this study was to evaluate the feasibility of reusing gypsum recovered from CDW in the preparation of mortar. This material was examined to determine its specific mass, morphology, elemental composition and particle size distribution. Test specimens were prepared with a mix design of 1:3 (cement:sand), with the gypsum waste substituting part of sand in proportions of 0, 10, 20 and 30% (in volume). The consistency of the fresh mortar was evaluated: the specimens were tested to determine their flexural and compressive strength, apparent density, water absorption, voids index, and specific mass. After 28 days, the mechanical strength of the specimens exceeded the limits specified by NBR 13281 standard, indicating that up to 30% of ground gypsum waste can be included in a mortar. |
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Utilization of gypsum from construction and demolition waste in Portland cement mortarConstruction and demolition wasteGypsumMortarPortland cementCivil construction generates the largest amount of construction and demolition waste (CDW), most of which is not reused and is discarded as inert waste in landfills. The purpose of this study was to evaluate the feasibility of reusing gypsum recovered from CDW in the preparation of mortar. This material was examined to determine its specific mass, morphology, elemental composition and particle size distribution. Test specimens were prepared with a mix design of 1:3 (cement:sand), with the gypsum waste substituting part of sand in proportions of 0, 10, 20 and 30% (in volume). The consistency of the fresh mortar was evaluated: the specimens were tested to determine their flexural and compressive strength, apparent density, water absorption, voids index, and specific mass. After 28 days, the mechanical strength of the specimens exceeded the limits specified by NBR 13281 standard, indicating that up to 30% of ground gypsum waste can be included in a mortar.São Paulo State University (UNESP) Institute of Science and Technology Sorocaba, Av. Três de Março 511Universidade de SorocabaSão Paulo State University (UNESP) Institute of Science and Technology Sorocaba, Av. Três de Março 511Universidade Estadual Paulista (Unesp)Universidade de SorocabaAntunes, M. L.P. [UNESP]Botignon de Sá, A. [UNESP]Oliveira, P. S. [UNESP]Rangel, E. C. [UNESP]2019-10-06T17:10:23Z2019-10-06T17:10:23Z2019-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1-6application/pdfhttp://dx.doi.org/10.1590/0366-6913201965S12588Ceramica, v. 65, p. 1-6.1678-45530366-6913http://hdl.handle.net/11449/19035110.1590/0366-6913201965S12588S0366-691320190005000012-s2.0-85066042824S0366-69132019000500001.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengCeramicainfo:eu-repo/semantics/openAccess2024-01-15T06:18:09Zoai:repositorio.unesp.br:11449/190351Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T23:00:48.874246Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Utilization of gypsum from construction and demolition waste in Portland cement mortar |
title |
Utilization of gypsum from construction and demolition waste in Portland cement mortar |
spellingShingle |
Utilization of gypsum from construction and demolition waste in Portland cement mortar Antunes, M. L.P. [UNESP] Construction and demolition waste Gypsum Mortar Portland cement |
title_short |
Utilization of gypsum from construction and demolition waste in Portland cement mortar |
title_full |
Utilization of gypsum from construction and demolition waste in Portland cement mortar |
title_fullStr |
Utilization of gypsum from construction and demolition waste in Portland cement mortar |
title_full_unstemmed |
Utilization of gypsum from construction and demolition waste in Portland cement mortar |
title_sort |
Utilization of gypsum from construction and demolition waste in Portland cement mortar |
author |
Antunes, M. L.P. [UNESP] |
author_facet |
Antunes, M. L.P. [UNESP] Botignon de Sá, A. [UNESP] Oliveira, P. S. [UNESP] Rangel, E. C. [UNESP] |
author_role |
author |
author2 |
Botignon de Sá, A. [UNESP] Oliveira, P. S. [UNESP] Rangel, E. C. [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade de Sorocaba |
dc.contributor.author.fl_str_mv |
Antunes, M. L.P. [UNESP] Botignon de Sá, A. [UNESP] Oliveira, P. S. [UNESP] Rangel, E. C. [UNESP] |
dc.subject.por.fl_str_mv |
Construction and demolition waste Gypsum Mortar Portland cement |
topic |
Construction and demolition waste Gypsum Mortar Portland cement |
description |
Civil construction generates the largest amount of construction and demolition waste (CDW), most of which is not reused and is discarded as inert waste in landfills. The purpose of this study was to evaluate the feasibility of reusing gypsum recovered from CDW in the preparation of mortar. This material was examined to determine its specific mass, morphology, elemental composition and particle size distribution. Test specimens were prepared with a mix design of 1:3 (cement:sand), with the gypsum waste substituting part of sand in proportions of 0, 10, 20 and 30% (in volume). The consistency of the fresh mortar was evaluated: the specimens were tested to determine their flexural and compressive strength, apparent density, water absorption, voids index, and specific mass. After 28 days, the mechanical strength of the specimens exceeded the limits specified by NBR 13281 standard, indicating that up to 30% of ground gypsum waste can be included in a mortar. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-10-06T17:10:23Z 2019-10-06T17:10:23Z 2019-01-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1590/0366-6913201965S12588 Ceramica, v. 65, p. 1-6. 1678-4553 0366-6913 http://hdl.handle.net/11449/190351 10.1590/0366-6913201965S12588 S0366-69132019000500001 2-s2.0-85066042824 S0366-69132019000500001.pdf |
url |
http://dx.doi.org/10.1590/0366-6913201965S12588 http://hdl.handle.net/11449/190351 |
identifier_str_mv |
Ceramica, v. 65, p. 1-6. 1678-4553 0366-6913 10.1590/0366-6913201965S12588 S0366-69132019000500001 2-s2.0-85066042824 S0366-69132019000500001.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Ceramica |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
1-6 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129481679831040 |