Mechanical properties of concrete by substituting sawdust with ground glass
Keywords:
Concrete, Ground glass, Mechanical properties, SawdustAbstract
This study aimed to evaluate the mechanical properties of concrete by substituting sawdust with ground glass in proportion to the weight of fine aggregate. These materials can be used again in the building sector, but they are often thrown away, which harms the environment. The modulus of elasticity, tensile strength, flexural strength, and compressive strength of 216 concrete samples were evaluated. To conduct these experiments, three experimental groups were made by adding sawdust in percentages of 10%, 15%, and 30% and powdered glass in percentages of 10%, 20%, and 30%. A control group of concrete samples was made without any additives. According to the analyzed results, the concrete's mechanical properties were enhanced by substituting 20% ground glass and 10% sawdust. This resulted in increases of 2.65% for compressive strength, 1.68% for flexural strength, and 6.51% for modulus of elasticity, corresponding to the design of f'c= 280 kg/cm². Similarly, the tensile strength test showed a drop of 3.18%. From the foregoing, it may be inferred that the concrete's mechanical qualities are only slightly improved using sawdust and powdered glass instead
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