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Disposal problem of waste materials and excessive demand on naturally available resources due to rapid urban development has opened possibilities for use of waste materials in construction industry. Many waste materials are used in concrete as replacement to cement, fine aggregate, coarse aggregate and reinforcement. Here review of some waste materials, whose ash is used as partial replacement to cement in concrete, is presented. Different properties of fresh and hardened concrete, when admixeddoi:10.35940/ijeat.a1008.1291s419 fatcat:f3tj2mhmvracjles2zncsqb4yi