降黏剂对C80混凝土性能影响的研究  

Study on the Influence of Viscosity Reducer on the Performance of C80 Concrete

作　　者：何舜 卢明华 徐瑞锋 余辉 应勇 胡昊 He Shun;Lu Minghua;Xu Ruifeng;Yu Hui;Ying Yong;Hu Hao(Jiangxi Hengtong traffic engineering testing Co.Ltd.,Nanchang,Jiangxi 330001)

机构地区：[1]江西省恒通交通工程检测有限公司,江西南昌330001

出　　处：《江西建材》2024年第8期84-86,共3页

摘　　要：文中研究了降黏剂取代粉煤灰对C80混凝土倒置坍落度排空时间、抗压强度、抗冻性和收缩的影响。结果表明,混凝土的倒置坍落度筒排空时间随着降黏剂取代粉煤灰比例增加而逐渐减小。随着降黏剂取代粉煤灰比例增加,混凝土的7 d抗压强度逐渐增加,28 d抗压强度虽有增加,但变化相对较小。C80混凝土的抗冻性能和抵抗收缩性能较好,降黏剂用量对混凝土的抗冻性能和收缩影响较小。In this paper,the effects of viscosity reducing agent replacing fly ash on expansion,compressive strength,frost resistance and shrinkage of C80 concrete were studied.The results show that the expansion degree of concrete increases gradually with the increase of the proportion of fly ash replaced by viscosity reducer.With the increase of the proportion of fly ash replaced by viscosity reducer,the 7 d compressive strength of concrete gradually increased,and the 28 d compressive strength increased,but the change was relatively small.The freezing resistance and shrinkage resistance of C80 concrete are good,and the amount of viscosity reducing agent has little effect on the freezing resistance and shrinkage of concrete.

关 键 词：降黏剂 C80混凝土 扩展度 抗压强度 抗冻性 收缩 

分 类 号：TB321[一般工业技术—材料科学与工程]