ABSTRACT

Abstract This paper presents the test results on autogenous shrinkage of high performance concrete containing various amounts of pozzolanic materials, namely slag, fly ash, and their combinations. The effects of pozzolans and paste-to-aggregate ratio on autogenous shrinkage are investigated in this study. The weight ratios of cement replaced by pozzolans included 0%, 20%, and 40%. The paste-to-aggregate ratio adopted in this study were 0.44, 0.41, and 0.38. The test results indicate that the autogenous shrinkage of HPC is closely related to the content of the cementitious materials. While slag increases the autogenous shrinkage of HPC, fly ash helps to reduce the possible amount of the autogenous shrinkage due to its inert nature. Keywords: Autogenous shrinkage, drying shrinkage, high performance concrete, slag, fly ash, paste-to-aggregate ratio.