freeze burn

Early-age frost damage of high strength concrete at minus-temperature can be expressed by the concept of generalized maturity.

负温高强混凝土的早期冻结损伤可以用广义度时积来表达 ,广义度时积包括正温养护度时积 ,负温养护度时积和冻结损伤度时积三部分 ,它将混凝土早期负温行为的三个主因素 :标养时间、冻结时间和冻结温度有机地统一起来。

Through the studies to anti-freezing critical strength of subzero high strength pumped concrete, we deduced the freeze-damage law of early age, and, through studies to submicro-construction of damaged concrete, we found the parameters of pore at submicro-construction can reflect the damage status of the concrete effectively.

通过对负温高强泵送混凝土的抗冻临界强度的研究 ,得出其早期承受冻结的冻结损伤规律 ,并且对不同程度冻结损伤的混凝土的细观结构进行了研究 ,研究表明 ,表征细观层次气孔的各项参数可以有效地反映出混凝土的损伤状