矿物掺合料对未水化水泥的后期水化危害的抑制作用

低水灰比混凝土中存在大量未水化的水泥,其后期继续水化将导致混凝土的损伤,表现为抗压强度显著降低及耐久性变差.为抑制未水化水泥的后期水化危害,研究了粉煤灰和矿渣单掺或双掺后对混凝土后期性能的影响,结果表明,双掺粉煤灰和矿渣可以有效抑制混凝土中未水化水泥的后期水化危害.

Effects of Mineral Admixtures on Restraining the Harmfulness of Later-age Hydration of Unhydrated Cement

There is a large of quantity of unhydrated cement in the low water cement ratio concrete,and its later continuous hydration will lead to damage the concrete,that express in,compression strength is obviously decressed and the durability is deteriorated.In order to restrain the harms due to later hydration of unhydrated cement,the effect of adding of,both or respectively,fly ash and slag on the performance of concrete has been studied.The result indicates that both adding fly ash and slag can effectively restrain the harms due to later hydration of unhydrated cement.