Analysis technique for autogenous shrinkage in high performance concrete with mineral and chemical admixtures

Abstract

This paper presents an analysis technique for AGS (autogenous shrinkage) in high performance concrete (HPC) with mineral and chemical admixtures. In this paper, comprehensive tests are performed to evaluate the behavior of AGS in HPC. Six mix proportions for evaluating the effect of FA (fly ash), SF (silica fume), and their combinations are prepared. Additional six mix proportions are also prepared for evaluation of the effect of SRA (shrinkage reducing agent), EA (expansive agent), and their combinations. Considering initial setting time and amount of admixture, analysis technique is proposed for prediction of AGS in HPC with mineral and chemical admixture, which can handle the compressive strain due to SRA and EA addition. The results from the proposed technique are compared with test results and they showed a reasonable agreement with test results for verification.