Characterization of demolished concretes with three different strengths for recycling as coarse aggregate
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/230189 |
Resumo: | This paper presents a physical characterization for the recycling into new concretes of three comminuted concretes: C16/20 (“ordinary concrete”), C50/60 (“high strength concrete”), and C70/85 (“very high strength concrete”). The top size of the crushed concretes was 19.1 mm and the size range was 4.75 to 19.1 mm. The characterization was carried out with coarse aggregate liberation, to be prepared and concentrated in a gravity concentration process. The density distribution of the coarse aggregate, cement paste, and sand was carried out in different size ranges (4.75/19.1 mm; 4.75/8.0 mm; 8.0/12.5 mm; and 12.5/19.1 mm) for the three concretes studied. The form factor of the samples, as well as the porosity determination of particles in different density ranges, are presented. The obtained results indicate that the coarse aggregate liberation was more intensive for the low resistance concrete (C16/20), but a reasonable coarse aggregate recovery is possible for all concretes. |
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Sampaio, Carlos HoffmannCazacliu, BogdanAmbrós, Weslei MonteiroKronbauer, Márcio AndréTubino, Rejane Maria CandiotaDal Molin, Denise Carpena CoitinhoOliva Moncunill, JosepMiltzarek, Gerson LuisWaskow, Régis PereiraSantos, Viviane Lopes Gschwenter dosSilva, Luis Felipe Oliveira2021-09-24T04:22:30Z20212075-163Xhttp://hdl.handle.net/10183/230189001129778This paper presents a physical characterization for the recycling into new concretes of three comminuted concretes: C16/20 (“ordinary concrete”), C50/60 (“high strength concrete”), and C70/85 (“very high strength concrete”). The top size of the crushed concretes was 19.1 mm and the size range was 4.75 to 19.1 mm. The characterization was carried out with coarse aggregate liberation, to be prepared and concentrated in a gravity concentration process. The density distribution of the coarse aggregate, cement paste, and sand was carried out in different size ranges (4.75/19.1 mm; 4.75/8.0 mm; 8.0/12.5 mm; and 12.5/19.1 mm) for the three concretes studied. The form factor of the samples, as well as the porosity determination of particles in different density ranges, are presented. The obtained results indicate that the coarse aggregate liberation was more intensive for the low resistance concrete (C16/20), but a reasonable coarse aggregate recovery is possible for all concretes.application/pdfengMinerals [recurso eletrônico]. Basel, SZ. Vol. 11, no. 8 (2021), Art. 803, 13 p.Resíduos da construção civilAgregados para construção civilConcretoConcreteRecyclingDensity distributionLiberationGravity concentrationCharacterization of demolished concretes with three different strengths for recycling as coarse aggregateEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001129778.pdf.txt001129778.pdf.txtExtracted Texttext/plain47891http://www.lume.ufrgs.br/bitstream/10183/230189/2/001129778.pdf.txteb3fcb296f82a27d6554e628b1ac21e7MD52ORIGINAL001129778.pdfTexto completo (inglês)application/pdf3182932http://www.lume.ufrgs.br/bitstream/10183/230189/1/001129778.pdf9baa087d461c2039a3589d76014d84a6MD5110183/2301892021-10-04 04:24:12.609532oai:www.lume.ufrgs.br:10183/230189Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2021-10-04T07:24:12Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Characterization of demolished concretes with three different strengths for recycling as coarse aggregate |
title |
Characterization of demolished concretes with three different strengths for recycling as coarse aggregate |
spellingShingle |
Characterization of demolished concretes with three different strengths for recycling as coarse aggregate Sampaio, Carlos Hoffmann Resíduos da construção civil Agregados para construção civil Concreto Concrete Recycling Density distribution Liberation Gravity concentration |
title_short |
Characterization of demolished concretes with three different strengths for recycling as coarse aggregate |
title_full |
Characterization of demolished concretes with three different strengths for recycling as coarse aggregate |
title_fullStr |
Characterization of demolished concretes with three different strengths for recycling as coarse aggregate |
title_full_unstemmed |
Characterization of demolished concretes with three different strengths for recycling as coarse aggregate |
title_sort |
Characterization of demolished concretes with three different strengths for recycling as coarse aggregate |
author |
Sampaio, Carlos Hoffmann |
author_facet |
Sampaio, Carlos Hoffmann Cazacliu, Bogdan Ambrós, Weslei Monteiro Kronbauer, Márcio André Tubino, Rejane Maria Candiota Dal Molin, Denise Carpena Coitinho Oliva Moncunill, Josep Miltzarek, Gerson Luis Waskow, Régis Pereira Santos, Viviane Lopes Gschwenter dos Silva, Luis Felipe Oliveira |
author_role |
author |
author2 |
Cazacliu, Bogdan Ambrós, Weslei Monteiro Kronbauer, Márcio André Tubino, Rejane Maria Candiota Dal Molin, Denise Carpena Coitinho Oliva Moncunill, Josep Miltzarek, Gerson Luis Waskow, Régis Pereira Santos, Viviane Lopes Gschwenter dos Silva, Luis Felipe Oliveira |
author2_role |
author author author author author author author author author author |
dc.contributor.author.fl_str_mv |
Sampaio, Carlos Hoffmann Cazacliu, Bogdan Ambrós, Weslei Monteiro Kronbauer, Márcio André Tubino, Rejane Maria Candiota Dal Molin, Denise Carpena Coitinho Oliva Moncunill, Josep Miltzarek, Gerson Luis Waskow, Régis Pereira Santos, Viviane Lopes Gschwenter dos Silva, Luis Felipe Oliveira |
dc.subject.por.fl_str_mv |
Resíduos da construção civil Agregados para construção civil Concreto |
topic |
Resíduos da construção civil Agregados para construção civil Concreto Concrete Recycling Density distribution Liberation Gravity concentration |
dc.subject.eng.fl_str_mv |
Concrete Recycling Density distribution Liberation Gravity concentration |
description |
This paper presents a physical characterization for the recycling into new concretes of three comminuted concretes: C16/20 (“ordinary concrete”), C50/60 (“high strength concrete”), and C70/85 (“very high strength concrete”). The top size of the crushed concretes was 19.1 mm and the size range was 4.75 to 19.1 mm. The characterization was carried out with coarse aggregate liberation, to be prepared and concentrated in a gravity concentration process. The density distribution of the coarse aggregate, cement paste, and sand was carried out in different size ranges (4.75/19.1 mm; 4.75/8.0 mm; 8.0/12.5 mm; and 12.5/19.1 mm) for the three concretes studied. The form factor of the samples, as well as the porosity determination of particles in different density ranges, are presented. The obtained results indicate that the coarse aggregate liberation was more intensive for the low resistance concrete (C16/20), but a reasonable coarse aggregate recovery is possible for all concretes. |
publishDate |
2021 |
dc.date.accessioned.fl_str_mv |
2021-09-24T04:22:30Z |
dc.date.issued.fl_str_mv |
2021 |
dc.type.driver.fl_str_mv |
Estrangeiro 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://hdl.handle.net/10183/230189 |
dc.identifier.issn.pt_BR.fl_str_mv |
2075-163X |
dc.identifier.nrb.pt_BR.fl_str_mv |
001129778 |
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2075-163X 001129778 |
url |
http://hdl.handle.net/10183/230189 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Minerals [recurso eletrônico]. Basel, SZ. Vol. 11, no. 8 (2021), Art. 803, 13 p. |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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application/pdf |
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