In this research, the main variables are the proportion of RHA, dosage of superplasticizer for flowability and water/binder ratio. The parameters kept constant are the amount of cement, water, fine and coarse aggregate contents.
Test results substantiate the feasibility to develop low cost SCC using RHA. In the fresh state of concrete, the different mixes of concrete have slump flow in the range of 595–795 mm, L-box ratio ranging from 0 (stucked) to 1 and flow time ranging from 2.2 to 29.3 s. Out of nine mixes, four mixes were found to satisfy the requirements suggested by European federation of national trade associations representing producers and applicators of specialist building products (EFNARC) guide for making SCC. The compressive strengths developed by the SCC mixes with RHA were comparable to the control concrete. Cost analysis showed that the cost of ingredients of specific SCC mix is 42.47 % less than that of control concrete.
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