不同引气剂对混凝土性能的影响  

作　　者：杭美艳[1] 李响[1] 孔凡龙[1] 

机构地区：[1]内蒙古科技大学,内蒙古包头014010

出　　处：《江西建材》2015年第12期180-184,共5页Jiangxi Building Materials

摘　　要：试验选用两种引气剂,通过调整其掺量来控制混凝土含气量,分析不同引气剂、不同含气量对混凝土和易性、强度、抗冻性、冻融强度损失等性能的影响。试验结果表明:混凝土中掺入适量引气剂,引入适当气体量,可以显著改善了混凝土和易性、抗冻融性,但超量掺入引气剂后,混凝土强度大幅降低,抗冻融性能变差,冻融后强度损失率较大,并且黄引气剂作用效果明显优于白引气剂。The experiment makes an analysis of the influence on concrete’s workability, strength and freezing resistance,freeze -thaw strength loss,made by different types of air-entraining agent and gas content,choosing two different types of air -entraining agent and controlling different gas content with the help of added volume.Experiment results show that the concrete mixed with air -entraining agent in concrete importing adequate gas can significantly improve the workability and freeze -thaw resistance.However,if air -entraining agent in concrete is infused numerously,concrete strength significantly will re-duce,and the freeze -thaw resistance worse,and loss rate of freeze -thaw strength signif-icantly increases.Yellow air -entraining agent is better than that of white air -entraining agent.

关 键 词：引气剂 含气量 和易性 抗冻性 

分 类 号：TU528.042[建筑科学—建筑技术科学]