混和剤

[V-299] Influence to Concrete Properties by using Air-entraining Water-reducing Admixture with Shrinkage Reducing Function

*國居 史武¹、松枝 修治¹ (1. 独立行政法人水資源機構)

Keywords:Air-entraining Water-reducing Admixture with Shrinkage Reducing Function , Drying Shrinkage, Relative Dynamic Modulus of Elasticity, Mass Loss Rate

In order to enhance high durability on concrete, it is important to countermeasure for reducing cracks on its design. Although various chemical admixtures with shrinkage reducing function are developed, it is not clarified that the influences to durability of hardened concrete used these admixtures by cement or the maximum size of coarse aggregate. In this paper, it is investigated that properties of hardened concrete used air-entraining water-reducing admixtures with shrinkage reducing function experimentally. As a result, it is clarified that that drying shrinkage and frost-resistance are different by mixture proportions largely.