Unstabilised Rammed Earth: Characterization of Material Collected from Old Constructions in South Portugal and Comparison to Normative Requirements
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://repositorio.lnec.pt:8080/jspui/handle/123456789/1005151 |
Resumo: | Unstabilised rammed earth is a recyclable, economical and eco-friendly building material, used in the past and still applied today. Traditionally, its use was based on a long empirical knowledge of the local materials. Because this knowledge was mostly lost or is no longer sufficient, in many countries normative documents have been produced to allow the assessment of rammed earth soils. With the aim of contributing for a refining of these normative requirements, this article presents a research work that included: (i) collection of unstabilised rammed earth samples from six constructions in Portugal; (ii) a literature survey of normative and complementary documents to identify the most mentioned key-properties, the test procedures and the corresponding threshold limits; (iii) a discussion of the test procedures and of the thresholds limits in the light of the experimental results. The analyzed properties are the particle size distribution, maximum particle size, plasticity, compaction, linear shrinkage, organic content and salt content. The work highlights the advantages of taking into account the characteristics of existing constructions as a basis for the establishment and further refining of consistent threshold values. In particular, it shows that it is essential to adjust the requirements to the specificities of local materials. |
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Unstabilised Rammed Earth: Characterization of Material Collected from Old Constructions in South Portugal and Comparison to Normative RequirementsUnstabilised rammed earthEarth constructionSoil propertiesRequirementsNormative documentsUnstabilised rammed earth is a recyclable, economical and eco-friendly building material, used in the past and still applied today. Traditionally, its use was based on a long empirical knowledge of the local materials. Because this knowledge was mostly lost or is no longer sufficient, in many countries normative documents have been produced to allow the assessment of rammed earth soils. With the aim of contributing for a refining of these normative requirements, this article presents a research work that included: (i) collection of unstabilised rammed earth samples from six constructions in Portugal; (ii) a literature survey of normative and complementary documents to identify the most mentioned key-properties, the test procedures and the corresponding threshold limits; (iii) a discussion of the test procedures and of the thresholds limits in the light of the experimental results. The analyzed properties are the particle size distribution, maximum particle size, plasticity, compaction, linear shrinkage, organic content and salt content. The work highlights the advantages of taking into account the characteristics of existing constructions as a basis for the establishment and further refining of consistent threshold values. In particular, it shows that it is essential to adjust the requirements to the specificities of local materials.Taylor and Francis2013-08-29T16:25:49Z2014-10-20T15:58:04Z2017-04-13T08:41:42Z2012-04-01T00:00:00Z2012-04info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://repositorio.lnec.pt:8080/jspui/handle/123456789/1005151engGomes, I.Gonçalves, T. D.Faria Rodrigues, P.info: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:RCAAP2024-01-13T03:03:46Zoai:localhost:123456789/1005151Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:38:59.902826Repositório 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 |
Unstabilised Rammed Earth: Characterization of Material Collected from Old Constructions in South Portugal and Comparison to Normative Requirements |
title |
Unstabilised Rammed Earth: Characterization of Material Collected from Old Constructions in South Portugal and Comparison to Normative Requirements |
spellingShingle |
Unstabilised Rammed Earth: Characterization of Material Collected from Old Constructions in South Portugal and Comparison to Normative Requirements Gomes, I. Unstabilised rammed earth Earth construction Soil properties Requirements Normative documents |
title_short |
Unstabilised Rammed Earth: Characterization of Material Collected from Old Constructions in South Portugal and Comparison to Normative Requirements |
title_full |
Unstabilised Rammed Earth: Characterization of Material Collected from Old Constructions in South Portugal and Comparison to Normative Requirements |
title_fullStr |
Unstabilised Rammed Earth: Characterization of Material Collected from Old Constructions in South Portugal and Comparison to Normative Requirements |
title_full_unstemmed |
Unstabilised Rammed Earth: Characterization of Material Collected from Old Constructions in South Portugal and Comparison to Normative Requirements |
title_sort |
Unstabilised Rammed Earth: Characterization of Material Collected from Old Constructions in South Portugal and Comparison to Normative Requirements |
author |
Gomes, I. |
author_facet |
Gomes, I. Gonçalves, T. D. Faria Rodrigues, P. |
author_role |
author |
author2 |
Gonçalves, T. D. Faria Rodrigues, P. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Gomes, I. Gonçalves, T. D. Faria Rodrigues, P. |
dc.subject.por.fl_str_mv |
Unstabilised rammed earth Earth construction Soil properties Requirements Normative documents |
topic |
Unstabilised rammed earth Earth construction Soil properties Requirements Normative documents |
description |
Unstabilised rammed earth is a recyclable, economical and eco-friendly building material, used in the past and still applied today. Traditionally, its use was based on a long empirical knowledge of the local materials. Because this knowledge was mostly lost or is no longer sufficient, in many countries normative documents have been produced to allow the assessment of rammed earth soils. With the aim of contributing for a refining of these normative requirements, this article presents a research work that included: (i) collection of unstabilised rammed earth samples from six constructions in Portugal; (ii) a literature survey of normative and complementary documents to identify the most mentioned key-properties, the test procedures and the corresponding threshold limits; (iii) a discussion of the test procedures and of the thresholds limits in the light of the experimental results. The analyzed properties are the particle size distribution, maximum particle size, plasticity, compaction, linear shrinkage, organic content and salt content. The work highlights the advantages of taking into account the characteristics of existing constructions as a basis for the establishment and further refining of consistent threshold values. In particular, it shows that it is essential to adjust the requirements to the specificities of local materials. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-04-01T00:00:00Z 2012-04 2013-08-29T16:25:49Z 2014-10-20T15:58:04Z 2017-04-13T08:41:42Z |
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://repositorio.lnec.pt:8080/jspui/handle/123456789/1005151 |
url |
http://repositorio.lnec.pt:8080/jspui/handle/123456789/1005151 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Taylor and Francis |
publisher.none.fl_str_mv |
Taylor and Francis |
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 |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799136875524390912 |