Assessment of durability of biobased earth composites
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10362/132659 |
Resumo: | Bio-based earth composites present various environmental benefits, such as usable wastes, coproducts, abundant or renewable materials, etc. Moreover, the incorporation of bioaggregates in the earth matrix allows the buildings to act as an effective carbon sink. A growing number of studies are now focusing on the mechanical and hygrothermal properties of bio-based earth building materials. However, the durability of these types of material is a major concern, and knowledge of their various aspects is essential to anticipate maintenance and sustain the performance levels. Here, the durability of compressed earth composites, valorizing discarded earth containing 3% of barley straw, hemp shiv, or rice husk, is investigated. Due to the lack of internationally recognized standards to assess the durability of earthen materials and products, we proposed some testing procedures and discussed their relevance. The addition of these three bioaggregates decreases stiffness, as estimated by ultrasound velocity, and improves the resistance to impact and erosion by water. However, water absorption under low pressure is increased, and dry abrasion resistance is decreased. Moreover, the rice husk composite presents the best compromise. |
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Assessment of durability of biobased earth compositesearth compositedurabilityperformancerice huskhemp shivstrawSDG 7 - Affordable and Clean EnergyBio-based earth composites present various environmental benefits, such as usable wastes, coproducts, abundant or renewable materials, etc. Moreover, the incorporation of bioaggregates in the earth matrix allows the buildings to act as an effective carbon sink. A growing number of studies are now focusing on the mechanical and hygrothermal properties of bio-based earth building materials. However, the durability of these types of material is a major concern, and knowledge of their various aspects is essential to anticipate maintenance and sustain the performance levels. Here, the durability of compressed earth composites, valorizing discarded earth containing 3% of barley straw, hemp shiv, or rice husk, is investigated. Due to the lack of internationally recognized standards to assess the durability of earthen materials and products, we proposed some testing procedures and discussed their relevance. The addition of these three bioaggregates decreases stiffness, as estimated by ultrasound velocity, and improves the resistance to impact and erosion by water. However, water absorption under low pressure is increased, and dry abrasion resistance is decreased. Moreover, the rice husk composite presents the best compromise.CERIS - Polo NOVADEC - Departamento de Engenharia CivilRUNLaborel-Préneron, AurélieFaria, PaulinaAubert, Jean EmmanuelMagniont, Camille2022-02-09T23:20:05Z2021-05-072021-05-07T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article23application/pdfhttp://hdl.handle.net/10362/132659eng2689-5846PURE: 36678754https://doi.org/10.21926/rpm.2102016info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-03-11T05:11:20Zoai:run.unl.pt:10362/132659Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:47:33.349885Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Assessment of durability of biobased earth composites |
title |
Assessment of durability of biobased earth composites |
spellingShingle |
Assessment of durability of biobased earth composites Laborel-Préneron, Aurélie earth composite durability performance rice husk hemp shiv straw SDG 7 - Affordable and Clean Energy |
title_short |
Assessment of durability of biobased earth composites |
title_full |
Assessment of durability of biobased earth composites |
title_fullStr |
Assessment of durability of biobased earth composites |
title_full_unstemmed |
Assessment of durability of biobased earth composites |
title_sort |
Assessment of durability of biobased earth composites |
author |
Laborel-Préneron, Aurélie |
author_facet |
Laborel-Préneron, Aurélie Faria, Paulina Aubert, Jean Emmanuel Magniont, Camille |
author_role |
author |
author2 |
Faria, Paulina Aubert, Jean Emmanuel Magniont, Camille |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
CERIS - Polo NOVA DEC - Departamento de Engenharia Civil RUN |
dc.contributor.author.fl_str_mv |
Laborel-Préneron, Aurélie Faria, Paulina Aubert, Jean Emmanuel Magniont, Camille |
dc.subject.por.fl_str_mv |
earth composite durability performance rice husk hemp shiv straw SDG 7 - Affordable and Clean Energy |
topic |
earth composite durability performance rice husk hemp shiv straw SDG 7 - Affordable and Clean Energy |
description |
Bio-based earth composites present various environmental benefits, such as usable wastes, coproducts, abundant or renewable materials, etc. Moreover, the incorporation of bioaggregates in the earth matrix allows the buildings to act as an effective carbon sink. A growing number of studies are now focusing on the mechanical and hygrothermal properties of bio-based earth building materials. However, the durability of these types of material is a major concern, and knowledge of their various aspects is essential to anticipate maintenance and sustain the performance levels. Here, the durability of compressed earth composites, valorizing discarded earth containing 3% of barley straw, hemp shiv, or rice husk, is investigated. Due to the lack of internationally recognized standards to assess the durability of earthen materials and products, we proposed some testing procedures and discussed their relevance. The addition of these three bioaggregates decreases stiffness, as estimated by ultrasound velocity, and improves the resistance to impact and erosion by water. However, water absorption under low pressure is increased, and dry abrasion resistance is decreased. Moreover, the rice husk composite presents the best compromise. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-05-07 2021-05-07T00:00:00Z 2022-02-09T23:20:05Z |
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://hdl.handle.net/10362/132659 |
url |
http://hdl.handle.net/10362/132659 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
2689-5846 PURE: 36678754 https://doi.org/10.21926/rpm.2102016 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
23 application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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