LIGHT WEIGHT AGGRIGATES OF CINDER MIX CONCRETE WITH COMPRESSIVE STRENGTH
Publication Date : 18/07/2016
To prepare homogeneous concrete by using waste material like cinder. We make concrete by replacing coarse aggregate with cinder of different percentages like 20%, 40%, 60%, 80% and 100% with curing of 7.15 and 28 days. And determine the compressive strength of concrete for above cinder replacement levels and conclude the better one. Cinder is a waste material obtained from steel manufacturing units. It is being used as a filler material for sunken slabs and also being used for structural purposes wherever necessary (In massive structures (Bridges) to reduce the self weight). In this study an investigation has been made to understand the behavior of conventional aggregate concrete in which normal aggregate is replaced with cinder in volume percentages of 20, 40, 60, 80 and 100. The conventional aggregate concrete mix has been designed for M20 grade concrete using ISI method. In this investigation cubes of standard size 150 x 150 mm specimens have been cast and tested after four different curing periods. Three specimens have been cast for each variable and thus totally 36 specimens are tested. From the study it is concluded that 60 percent replacement of conventional aggregate with cinder by volume by weight yields the target mean strength. It worth noted that there is a slight increase in strength and other properties due to extended curing periods and the unit weight of the cinder concrete is varying from 2.51 gms/mm3 to 2.03gms/mm3 with different percentages of cinder. It is also noted that there is a decrease in density after extended curing periods.
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