Compression behaviour of non-industrial materials in civil engineering by three scale experiments: The case of rammed earth

Quoc Bao Bui, Jean Claude Morel, Stéphane Hans, Nicolas Meunier

Research output: Contribution to journalArticle

105 Citations (Scopus)

Abstract

In order to give an example of a scientific approach adapted to non-industrial materials, we chose to study a structural element: a load-bearing building wall made of rammed earth material. Rammed earth construction is an ancient technique which is attracting renewed interest throughout the world today. Although rammed earth is currently regarded as a promising material in the construction sector in the context of sustainable development, it is still difficult to quantify its durability, as well as its thermal and mechanical performances, which discourages people from using it. This paper is devoted to the study of the last problem. Three different scales were studied. The first is the scale of in-situ walls. Dynamic measurements were carried out on site to determine the Eigen frequencies of the walls. The elastic modulus was determined from the frequencies measured by using a finite element model. The second is the scale of a representative volume element (RVE). Rammed earth RVE samples with dimensions similar to those of the walls on site were manufactured and tested in the laboratory. Finally, at the last scale, called the micro-mechanical scale, tests were performed on equivalent compressed earth blocks (CEBs), which can replace the rammed earth RVE samples to facilitate laboratory tests.

Original languageEnglish
Pages (from-to)1101-1116
Number of pages16
JournalMaterials and Structures
Volume42
Issue number8
DOIs
Publication statusPublished - Oct 2009
Externally publishedYes

Keywords

  • Compressed earth block
  • Elastic modulus
  • In-situ testing
  • Rammed earth
  • Sustainable development
  • Vibration

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)
  • Mechanics of Materials

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