C30大体积混凝土承台配合比设计及其应用  

Mix Ratio Design and Application of C30 Mass Concrete Cushion Cap

作　　者：郑宝全 Zheng Baoquan(Xiamen Zhuoyi Construction Engineering Co.Ltd.,Xiamen,Fujian 361000)

机构地区：[1]厦门卓毅建筑工程有限公司,福建厦门361000

出　　处：《江西建材》2022年第11期34-36,共3页Jiangxi Building Materials

摘　　要：文中以某承台基础为背景,对C30大体积混凝土承台配合比进行优化设计,并从中选取最优配合比应用于工程施工。结果表明:制备大体积混凝土时,复掺15%粉煤灰+15%矿粉,能够显著降低混凝土水化热,提高混凝土抗裂性能;HPCA-300缓凝减水剂掺量不宜超过1.3%,该配合比能够满足工程要求。Based on a pile cap foundation, the mix proportion of C30 mass concrete pile cap is optimized, and the optimal mix proportion is selected for engineering construction. The results show that the hydration heat of concrete can be significantly reduced and the crack resistance of concrete can be improved by adding 15% fly ash+15% mineral powder when preparing mass concrete;The dosage of HPCA-300retarding and water reducing agent should not exceed 1.3%;The mix proportion can meet the engineering requirements.

关 键 词：大体积混凝土 水泥种类 矿物掺合料 水化热 抗裂性能 

分 类 号：U444[建筑科学—桥梁与隧道工程]