A total number of 36 concrete cubes of grade G20 was casted in which 18 cubes was tested at 14 days of curing and remaining 18 cubes was tested at 28days.The cubes was casted using 0%, 10%, 20%, 30%, 40% and 50% replacement of cement with calcium carbide waste and slump test was carried out during casting to check the workability of each concrete mix. Concrete mix design was carried out for concrete grade G20 in accordance to BS 5328:Part2 1991(as per DOE, 1975). As part of preliminary test sieve analysis was carried out on fine and coarse aggregate to identify the zone and size of aggregate use in this research. This paper presents an experimental investigation in to the effect of calcium carbide waste in compressive strength and workability of concrete when use as partial replacement of cement in concrete.
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