Freezing and thawing resistance of high-strength concrete

摘要: Recent developments have made a new generation of high-strength concrete viable material for routine construction. The two principal are high-range water-reducing admixtures, which permit the placement very low water-cement ratio, and silica fume, pozzolan extremely high fineness. advent this has put requirements strength durability in conflict. Because entrained air reduces concrete, builders seek to eliminate or limit use air. There those who argue that is such quality unnecessary. Much currently being used buildings, where question minor. question, however, cannot be avoided exposed highway structures. Service records non-air-entrained freezing not conclusive. Hence, report synthesizes available knowledge on subject. Its aim provide guidance wish typical applications indicate further information needed.