Utilization of gypsum from construction and demolition waste in Portland cement mortar
Autor(a) principal: | |
---|---|
Data de Publicação: | 2019 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Cerâmica (São Paulo. Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132019000500001 |
Resumo: | Abstract 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. |
id |
USP-29_e260d331ee08e7630576d2e24a7caedb |
---|---|
oai_identifier_str |
oai:scielo:S0366-69132019000500001 |
network_acronym_str |
USP-29 |
network_name_str |
Cerâmica (São Paulo. Online) |
repository_id_str |
|
spelling |
Utilization of gypsum from construction and demolition waste in Portland cement mortarconstruction and demolition wastegypsummortarPortland cementAbstract 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.Associação Brasileira de Cerâmica2019-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132019000500001Cerâmica v.65 suppl.1 2019reponame:Cerâmica (São Paulo. Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/0366-6913201965s12588info:eu-repo/semantics/openAccessAntunes,M. L. P.Sá,A. Botignon deOliveira,P. S.Rangel,E. C.eng2019-03-18T00:00:00Zoai:scielo:S0366-69132019000500001Revistahttps://www.scielo.br/j/ce/PUBhttps://old.scielo.br/oai/scielo-oai.phpceram.abc@gmail.com||ceram.abc@gmail.com1678-45530366-6913opendoar:2019-03-18T00:00Cerâmica (São Paulo. Online) - Universidade de São Paulo (USP)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. 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. |
author_facet |
Antunes,M. L. P. Sá,A. Botignon de Oliveira,P. S. Rangel,E. C. |
author_role |
author |
author2 |
Sá,A. Botignon de Oliveira,P. S. Rangel,E. C. |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Antunes,M. L. P. Sá,A. Botignon de Oliveira,P. S. Rangel,E. C. |
dc.subject.por.fl_str_mv |
construction and demolition waste gypsum mortar Portland cement |
topic |
construction and demolition waste gypsum mortar Portland cement |
description |
Abstract 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 |
2019-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132019000500001 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132019000500001 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/0366-6913201965s12588 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Associação Brasileira de Cerâmica |
publisher.none.fl_str_mv |
Associação Brasileira de Cerâmica |
dc.source.none.fl_str_mv |
Cerâmica v.65 suppl.1 2019 reponame:Cerâmica (São Paulo. Online) instname:Universidade de São Paulo (USP) instacron:USP |
instname_str |
Universidade de São Paulo (USP) |
instacron_str |
USP |
institution |
USP |
reponame_str |
Cerâmica (São Paulo. Online) |
collection |
Cerâmica (São Paulo. Online) |
repository.name.fl_str_mv |
Cerâmica (São Paulo. Online) - Universidade de São Paulo (USP) |
repository.mail.fl_str_mv |
ceram.abc@gmail.com||ceram.abc@gmail.com |
_version_ |
1748936784617668608 |