刁学优 （珠海市房屋安全鉴定所，珠海519015）

[摘要]  近年来，早强型水泥引起的混凝土结构工程裂缝问题日渐突出。尤其是采用早强水泥和外加剂、养护不足且配筋不当的泵送商品混凝土现浇结构早期裂缝明显增多，对结构耐久性的影响不容忽视。结合珠海地区的工程鉴定实践对此予以闰释。
[关键词]  早强型水泥；外加剂；养护；混凝土结构；早期裂缝；耐久性

Reason analysis caused concrete structure crack
Diao Xueyou
(Zhuhai Buildings Appraisal Institute, Zhuhai 519015, China)
   
Abstract: Concrete structure crack problem caused by high-early-strength cement is outstanding recently. It is obvious that early crack of concrete structure of cast-in-place pumped-commodity concrete using high-early-strength cement and concrete admixture, and under improper curing and reinforcement. Influence over durability of concrete structure should not be ignored. The causes are discussed according to the engineering practice in Zhuhai.
Keywords: high-early-strength cement; concrete admixture; curing; concrete structure; early crack; durability