ANALYSIS OF CONCRETE SHRINKAGE COUPLING WITH PROPERTIES OF AGGREGATE

Abstract

In this research, authors aim to quantitatively understand the influence of various aggregate properties on behaviors of concrete shrinkage based on both experimental and numerical approach. A multi-scale constitutive model revealed that only difference of aggregate Young’s modulus cannot cause significantly different shrinkage behaviors of concrete. Thus, the shrinkage of aggregate itself was focused on and aggregate shrinkage model that depends on its surface area and saturation degree according to experimental results of previous researches was proposed. The proposed model can reasonably simulate largely different shrinkage behaviors of concrete with various types of aggregates.