Abstract
An experimental study was carried out on bricks using local materials in order to take into account the waste wood management to protect the environment and to reduce the cost of the habitat. Chips and sawdust were built-in clay bricks in order to study their influence on the compressive strength, Young’s modulus and the speed for soundproofing. Testings in compressive strength were made on the parallelepiped clay bricks, stabilized with different percentages of cement, with incorporation to various percentages of sawdust or wood chips (Mahogany), using a universal press. Young’s modulus was measured from the speed of sound by the ultrasonic method. The results obtained show that the incorporation of mahogany tree chips in the stabilized brick at 8% of cement, does not have much effect on the compressive strength. It was found that the incorporation of chips or sawdust on the clay brick, does not improve the compressive strength. The Young’s modulus decreases with increasing content of sawdust and practically remains constant regardless of the content of chips at 4% and 6% of cement. The clay brick mixed with 8% of mahogany sawdust can be an acoustic barrier.
Highlights
We focus on the comparative study of the influence of the chips and sawdust mahogany content on the compressive strength
The mahogany chips being a fibrous material the grading distribution of which spreads out between 0.5 and 20 mm [9]; [10] and the sawdust being in the form of small wood fibers of lower size grading in 0.8 mm [5], are materials lighter than the clay soil material used
Influence of the Content of the Sawdust on the Compressive Strength In Figure 7, we have shown the variation of compressive strength with mahogany sawdust content at different cement contents
Summary
The use of waste wood in construction can be an alternative for the protection of the environment. The incorporation of wood waste in building materials has been the subject of several studies, most of which focused on the influence on the mechanical properties [1]-[3], on the mechanical properties of concrete. Taoukil et al [5] have shown that the incorporation of the waste wood (sawdust or chip) reduces the concrete blocks of ground. Mekhermeche [7] has shown in his study, that the ground bricks with 3% of wood fibers (date palm) present an improvement of the heat and acoustic insulation of these materials.
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