INFLUENCE OF PORTLAND CEMENT AND SHRINKAGE REDUCING AGENTS TO DRYING SHRINKAGE OF CONCRETE

The drying shrinkage is the main cause of cracks in reinforced concrete. Therefore, it is important to the effect of drying shrinkage of material. In this study, it was shown the effect of drying shrinkage of cement and shrinkage reducing agent, considering mix proportion and drying ratio. In this experiment, several cements and shrinkage reducing agents were used. The results of experiments for drying shrinkage, a large effects of cements and shrinkage reducing agents, whereas a small effect of expansive additive. Moreover, the effects of drying shrinkage of materials were evaluated.