Abstract
In order to explore the effect of RCA on the compressive strength of concrete, two RCAs from different sources are utilized to take experiments in this study. Four groups of concrete, including three RACs incorporated with various RCAs and another one made with natural aggregate (i.e. normal aggregate concrete (NAC)) are tested under an identical laboratory condition. The influence of RCA on the statistical parameters of the compressive strength, including the mean value, the standard deviation and the coefficient of variation are examined in detail. In addition, the fitted normal distribution modelto is used to describe the probability distribution characteristics of the compressive strength of the RACs, and the Monte-Carlo simulation technique is applied to verify the suitability of the normal distribution model for the probability distribution of the compressive strength of RAC. At last, it is summed up that the RCA does not have a significant effect on the variation and probability distribution of the compressive strength of concrete.
