一种新型混凝土引气剂的研究  

Study on new type of concrete air-entraining agent

作　　者：李兴翠[1] 邓德华[1] 何富强[1] 赵腾龙[1] 尹明[1] 

机构地区：[1]中南大学土术建筑学院,湖南长沙410075

出　　处：《新型建筑材料》2008年第2期4-6,共3页New Building Materials

摘　　要：介绍一种新型引气剂(简称AEA-1)的性能,并且通过与目前应用较为广泛的三萜皂甙类引气剂(简称AEA-2)对比研究了其引气混凝土的性能,如:新拌混凝土的和易性、泌水率、强度损失和抗冻性能等。结果表明,AEA-1引气剂能明显改善混凝土的和易性,降低混凝土的泌水率;当含气量为5.1%时,强度损失为10.65%,300次冻融循环后相对动弹模量为70.01%。AEA-1引气混凝土的性能在上述很多方面优于AEA-2引气混凝土。In this paper, a new type of air-entraining agent （AEA-1） is introduced. Many properties of fresh and hardened concrete with AEA-1 such as workability,bleeding rate, strength loss and freeze resistance etc. are studied by comparison with those concrete with another air-entraining agent （AEA-2） which main chemical component is triterpenoid saponin,and has a comparatively extensive application at present. The results show thai air-entraining agent AEA-1 can obviously improve workability and reduce bleeding rate of concrete. When air content is 5.1%,the strength loss is 10.65% and the relative dynamic and elastic modulus is 70.01% after 300 times freeze-thaw cycle. The performance of concrete with air-entraining agent AEA-1 has superiority over concrete with AEA-2 in many aspects.

关 键 词：混凝土 引气剂 含气量 强度损失 抗冻融性 

分 类 号：TQ177.37[化学工程—硅酸盐工业]