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Asbestos is a mineral material that is included in the category of Hazardous and Toxic Materials (B3). From a chemical point of view, asbestos is a substance consisting of magnesium-calcium-silicate which has fibrous properties that bind with its very strong physicality so that it can be used as a mixture for making concrete. The purpose of this study was to determine the effect of the addition of asbestos waste on the compressive strength of concrete with variations in asbestos waste additives of 15% and 30% by weight of cement. This research using experiment method wants to utilize asbestos waste as fine aggregate additive for concrete mixture. Tests were carried out on 14 and 28 day old concrete. The research results obtained normal concrete 26.30 MPa, concrete with a mixture of 15% asbestos waste 25.78 MPa, concrete with a mixture of 30% asbestos waste 25.44 MPa. Normal concrete has a greater compressive strength than concrete with a mixture of asbestos waste. The addition of asbestos waste does not significantly increase the compressive strength of concrete. Therefore, it is recommended to consider other alternative materials that may be more effective in enhancing concrete strength without compromising its quality.
Keywords: Asbestos Waste, K300 Concrete, Compressive Strength
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