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Abstract
This study has been undertaken to investigate water permeability characteristics of thin cement composites containing various recycled aggregate viz., recycled concrete, stone, brick and wood chips. Thin panels of 290mmx95mmx20mm size were cast with three different mixes incorporating three volume fractions of 20%, 30% and 40% of aggregate to determine the permeability coefficient of cement composites. Cumulative amount of water flowing through the test specimen was plotted against time which showed that the steady state condition was reached after three days. It has been found that the coefficient of permeability was increased with the increase in volume fraction of rebycled aggregate of all varieties. It was also revealed that the coefficient of permeability was higher for cement composite with light-weight recycled aggregate. Regression analysis was carried out on the experimental data to develop relationship among the coefficient of permeability and volume fraction of recycled aggregate. The relationships between coefficient of permeability and unit weight of cement composites have also been presented and discussed.