Performance of compressed earth blocks reinforced with natural fibers
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In contemporary times, governments prioritise the construction of structures that are both durable and cost-effective. Compressed earth blocks (CEB), known for their low environmental impact, excellent thermal insulation, and water resistance, have consistently met these criteria while seamlessly blending modernity with tradition. This study aims to investigate the mechanical and thermal properties of CEB stabilised with cement, compressed at 3 MPa, and reinforced with fibres derived from alfa and vine shoots. The fibres underwent chemical treatment, employing an alkali-acrylic process, to enhance their bond with the matrix, thereby bolstering the mechanical strength of the CEB. Results indicate a notable reduction in water absorption for treated alfa and vine shoot fibres, with reductions of 45% and 33%, respectively, compared to untreated fibres. Optimal compression resistance was achieved with a composition of 1.5% vine shoot fibres and 2.5% alfa fibres. Moreover, surface treatment of fibres led to a 5% and 20% increase in compressive strength for alfa and vine shoot fibres, respectively. Additionally, employing both fibre types resulted in decreased thermal conductivity and density, albeit with a slight adverse effect on thermal conductivity in CEBs containing treated fibres of both types.
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