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况 By studying the critical frost-freezing critical strength of pumped concrete with negative temperature and high strength, the freezing damage regularity of early frozen concrete was obtained, and the mesoscopic structure of concrete with different degrees of freeze damage was studied. The results showed that the microscopic level The parameters of stoma can effectively reflect the damage status of concrete