DRYING SHRINKAGE MODEL OF AGGREGATE BASED ON PORE STRUCTURE AND PORE WATRE CONTENT

Abstract

A simulation model to estimate the drying shrinkage of aggregate by curing in arbitrary relative humidity is presented. This paper describes procedures for predicting drying shrinkage of aggregate based on the pore size distribution measured by mercury porosimetry, change of capiraly tension and surface energy based on the water content inside of cylinder type pore under arbitrary humidity and cray mineral content. To evaluate the effectiveness of this model, simulation results were compared with experimental results. As a result, it was found that the experimental and simulated results were in close agreement, and the effectiveness of simulated model based on the pore structures, water content and cray mineral content was verified.