高性能混凝土中饱水轻集料的微养护作用及其机理  

Roles and Mechanism of Intemal Curing Produced by Saturated Ligh-weight Aggregate in High Performance Concrete

作　　者：蒋亚清[1] 许仲梓[1] 吴建林[2] 黎非 

机构地区：[1]南京工业大学材料学院,210009 [2]江苏省建筑材料研究设计院

出　　处：《混凝土与水泥制品》2003年第5期13-15,共3页China Concrete and Cement Products

基　　金：江苏省自然科学基金(BK2001085)

摘　　要：在高性能混凝土中掺用适量的饱水轻集料,可提高其内部相对湿度,促使水泥达到最大水化程度,并减少混凝土结构的开裂机率。本文阐述了微养护的重要性,分析了微养护的作用机理,提出了微养护所需轻集料用量的计算方法。Saturated light weight aggregate, used as a part of aggregate for high performance concrete (HPC), may supply the water that is consumed during cement hydration by self - desiccation and enhance the internal relative humidity of concrete. Thus the hydration degree of cement will be promoted to the maximum value, and the cracking of high performance concrete structure will be minimized. The benefits and the mechanism of internal curing using saturated light weight aggregate in HPC were described in this poper, and the calculation method for light weight aggregate needed was proporsed.

关 键 词：高性能混凝土 饱水轻集料 微养护 混凝土结构 水化 

分 类 号：TU528.31[建筑科学—建筑技术科学]