早期养护及掺合料对表层混凝土渗透性能的影响

Influence of early curing conditions and addition of supplementary cementitious materials on concrete performance of the permeability

采用电通量法及表面吸水法研究了不同潮湿养护条件和矿物掺合料的掺入对自然养护1年的C30普通混凝土抗氯离子渗透性能以及吸水性能的影响。结果表明,对混凝土进行早期潮湿养护有利于表层混凝土的抗渗性能;在标准养护下掺入掺合料可以提高表层混凝土的抗渗性能并减小内外混凝土抗渗性能的差异。

The influence of early moist curing conditions and mineral admixture on the chloride ion-penetration resistance,water absorbability of C30 ordinary concrete after 1 year of natural curing were investigated by the method of electric flux and water absorption.The results show that the early curing of concrete has a favorable on the impermeability of concrete.And the addition of fly ash and slag powder under standard curing can improve the impermeability of concrete and reduce the difference of impermeability between internal and external concrete.