Durability Ⅱ

[1105] Improvement of water and chloride penetration resistance of slag concrete by using high alite cement

Huynh Phuong NAM¹, Akira HOSODA² (1.Danang University of Science and Technology, Faculty of Road and Bridge Engineering 2.横浜国立大学 Institute of Urban Innovation)

Keywords:covercrete quality, high alite cement, slag concrete, SWAT, water/chloride penetration, 液状水と塩化物イオンの侵入, 表層品質, 高エーライトセメント, 高炉スラグコンクリート

In this research, the effectiveness of high alite cement (HAC) in improving the quality of covercrete of slag concrete was investigated by Surface Water Absorption Test (SWAT) and penetration depth tests. It is found that water absorption rate at ten minutes, which was obtained from SWAT, had a good correlation with penetration depth of water regardless of the type of binder. It was also revealed that HAC improved water penetration resistance of slag concrete due to its less sensitivity to curing condition. HAC slag concrete could also enhance the resistance against chloride ingress.