改性混凝土防裂剂的研究

Study on modified concrete anti-cracking agent

随着堆石面板坝的迅速发展,对混凝土防裂剂的综合性能要求越来越高,通过氨基磺酸盐减水剂、萘磺酸盐甲醛缩合物减水剂及三萜皂甙引气剂对混凝土防裂剂进行改性,使防裂混凝土成为高性能的混凝土。介绍改性混凝土防裂剂配方确定、防裂机理探讨以及对混凝土性能的影响。

With rapid development of enrockment faceplate dam,the requirement of comprehensive pertormance of concrete anti-cracking agent becomes higher and higher. Modification on concrete anti-cracking agent is made by sulphamate water reducing agent,naphthalene sulfonate formaldehyde condensate water reducing agent and triterpenoid saponin air entraining agent to make anti-cracking concrete be a high performance one.Introduction is made on fix the formula of modified concrete anti-cracking agent,discuss the anti-cracking mechanism and influence on performance of concrete.