Amélioration de la durabilité des briques de terre comprimée à base d'un sol de la région de Biskra

Abstract

Its availability and low cost have made the earth in most parts of the world, one of the most answered and oldest construction materials. The Earth presents an ecological interest where its construction participates well to the environmental protection at the chemical industry (cement production) where at energetic economy (making fired bricks). The problem posed by the traditional use of the earth is a problem of durability of the material itself. The objective of this work is mainly set on improving the characteristics of compressed earth bricks, especially the behavior towards water. The objective of this work is mainly fixed on improving the characteristics of compressed earth bricks, especially insensitivity to water. Stabilization is achieved by granulometric Correction carried out by two types of crushed sand with five levels 0, 10, 20, 30, 40% of the weight of the soil by fixing the percentage of cement at 5% and of the stress compaction at 100 bar. In this work we studied the influence of different levels of crushed sand on the mechanical compressive strengths at dry and wet, sustainability, capillary absorption, total absorption, action freeze-thaw. The results show that increasing the concentration of sand significantly improves the mechanical strength and present optimum 30% sand for durability tests. © Owned by the authors, published by EDP Sciences, 2014.