A carregar...
Publicação
Unstabilised rammed earth: characterization of material collected from old constructions in South Portugal and comparison to normative requirements
| Nome: | Descrição: | Tamanho: | Formato: | |
|---|---|---|---|---|
| 829.11 KB | Adobe PDF |
Orientador(es)
Resumo(s)
Unstabilized 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 Unstabilized
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; and (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.
Descrição
International Journal of Architectural Heritage, 8: 185–212, 2014
Palavras-chave
Unstabilized rammed earth Earth construction Soil properties Requirements Normative documents
Contexto Educativo
Citação
Maria Idália Gomes , Teresa Diaz Gonçalves & Paulina Faria (2014) Unstabilized Rammed Earth: Characterization of Material Collected from Old Constructions in South Portugal and Comparison to Normative Requirements, International Journal of Architectural Heritage: Conservation, Analysis, and Restoration, 8:2, 185-212, DOI: 10.1080/15583058.2012.683133
Editora
Taylor & Francis