水下抗分散混凝土制备及性能研究  

Study on Preparation and Performance of Underwater Anti-dispersion Concrete

作　　者：张晓雪 ZHANG Xiaoxue(Shanghai Construction Engineering Building Materials Technology Group Co.,Ltd.,Shanghai 200438,China;Shanghai Materials II Technology Co.,Ltd.,Shanghai 201822,China)

机构地区：[1]上海建工建材科技集团股份有限公司,上海200438 [2]上海材二科技有限公司,上海201822

出　　处：《建筑施工》2023年第10期2041-2045,共5页Building Construction

基　　金：上海建工集团重点研发课题(19YJKF-23)。

摘　　要：为制备兼具流动性与水下抗分散性的混凝土,研究了原料组成对水下混凝土性能的影响。结果表明:当抗分散剂6%、减水剂2%、水胶比0.65、砂率0.44、胶集比0.41、粉煤灰10%时,水下混凝土扩展度535 mm、悬浊物含量131 mg/L、水陆比89%,兼具流动度、水下抗分散性和力学性能。To prepare concrete with both flowability and underwater anti-dispersibility,the influence of raw material composition on the performance of underwater concrete is studied.The results show that when the anti-dispersant agent is 6%,the water reducing agent is 2%,the water cement ratio is 0.65,the sand ratio is 0.44,the cement aggregate ratio is 0.41,and the fly ash is 10%,the underwater concrete has a expansion degree of 535 mm,a suspension content of 131 mg/L,and a water land ratio of 89%,which combines flowability,underwater anti dispersion,and mechanical properties.

关 键 词：水下混凝土 扩展度 悬浊物含量 水陆比 

分 类 号：TU528[建筑科学—建筑技术科学]