The effect of chemical treatment on the mechanical and thermal properties of composite materials based on clay reinforced with sawdust
MATERIAUX & TECHNIQUES(2021)
摘要
This study investigates the effect of the chemical treatment of sawdust on the mechanical and thermal properties of a clay composite reinforced with sawdust in variable mass proportions: 0.5, 1, 1.5, 2 and 2.5%, intended for use as brick in rural houses in desert areas. The sawdust was chemically treated with 5 wt% NaOH and 0.01 wt% KMnO4 solutions. The mechanical test results of the reinforced composite with alkali-treated sawdust show an increase in flexural and compression strength, reaching a maximum value of 0.89 and 4.85 MPa, respectively. However, the thermal test results show a significant decrease in the thermal conductivity of the sawdust-reinforced composite. The best result recorded is that of untreated sawdust, which has a value of 0.37 (W.m(-1).K-1) compared to the one reinforced with treated sawdust.
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关键词
sawdust,clay,thermal conductivity,mechanical properties,chemical treatment
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