USING OF GROUND BAGASSE ASH IN ROLLER COMPACTED CONCRETE

Abstract

The objective of this research was to study the compressive strength and to predict the compressive strength of roller compacted concrete (RCC) with ground bagasse ash. Bagasse ash from the sugar factory was ground until the particles retaining on sieve No. 325 less than 15% by weight. Portland cement was replaced by ground bagasse ash at the rates of 10%, 20%, and 30% by weight of binder to cast the samples of roller compacted concrete containing 10, 12, and 14 percent of the binder content in the mixture and tested the compressive strength at 3, 7, 28, and 60 days. The results were then used to develop a nonlinear multiple regression model to predict the compressive strength of ground bagasse ash roller compacted concrete. It showed that the replacement of cement with increased ground bagasse ash reduced the compressive strength of roller compacted concrete. At the 10% replacement, the compressive strength of the concrete was the closest value to the control concrete. As for the 20% replacement at 28 days, the compressive strength was higher than 75% of the control concrete. It has been shown that ground bagasse ash can be used as a pozzolanic material in roller compacted concrete applications. For predicting the compressive strength of concrete, it was found that the nonlinear multiple regression model was effectively predicted the compressive strength of ground bagasse ash roller compacted concrete with the R², MAPE and RMSE statistical values of the training and testing datasets of 0.95994, 8.963, 19.646 and 0.98243, 6.253, 14.596, respectively.