摘要
在混凝土施工中,外加剂应用广泛,其中减水剂、引气剂和速凝剂对混凝土力学性能影响显著。本文研究了掺量为0、0.5%、1%、2%的减水剂,掺量为0、0.25%、0.5%、1%的引气剂,掺量为0、6%、8%、10%的速凝剂对混凝土力学性能的影响。结果表明,适宜的减水剂可提高混凝土的强度,引气剂的掺加会降低混凝土的强度,速凝剂可提高混凝土的早期强度,但后期强度增长缓慢甚至会倒缩。
Admixtures are widely used in concrete construction, among which water reducing agent, air-entraining agent and accelerator have significant effects on the mechanical properties of concrete. In this paper, the effect of the water reducing agent with the dosage of 0, 0.5%, 1% and 2%, the air-entraining agent with the dosage of 0, 0.25%, 0.5% and 1%, and the accelerator with the dosage of 0, 6%, 8% and 10%, on the mechanical properties of concrete are studied respectively. The results show that the appropriate water reducing agent can improve the strength of concrete, the addition of air-entraining agent can reduce the strength of concrete, and the accelerator can improve the early strength of concrete,but the later strength increases slowly and even shrinks.
作者
王亚坤
WANG Yakun(China Railway Design Corporation,Tianjin 300251)
出处
《中国建材科技》
CAS
2022年第5期40-42,共3页
China Building Materials Science & Technology
关键词
高寒高海拔地区
减水剂
引气剂
速凝剂
混凝土
力学性能
high cold and high altitude areas
water reducing agent
air-entraining agent
accelerator
concrete
mechanical properties
