An experimental study was carried out to investigate, the strength properties, of recycled aggregates for use in reactive powder concrete (RPC), to better understand the properties of reactive powder concrete with recycled aggregates used as a substitution material for normal sand in reactive powder concrete. The effects of variable parameters on these properties were carefully studied which are the percent of recycled fine aggregate (0%, 25%, 50%, and 75%) as a partial replacement by weight of normal sand, recycled fine aggregate (50%) as a partial replacement by weight of glass sand, and two different curing (20, 90 °C). The inclusion of using reactive silica sand powder leads to a considerable increment in both compressive and tensile strength for recycled reactive powder concrete (RRPC) and the heat treatment improves the properties of the RPC and RRPC considerably. Finally, the results indicated that it is possible to produce reactive powder concrete from recycled aggregate depending on the strength, the results show to suggest only a gradual lowering in compressive and splitting tensile strength.
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