新 疆严寒地区粉煤灰混凝土抗冻性试验研究.pdf

86 中国农村水利水电# 2010 年第12 期 : 1007-2284( 2010) 12- 0086-03 黄春霞, 杜应吉 ( , 712100) : 针对新疆下坂地水利枢纽工程, 通过试验设计适应于当地严寒气 的混凝土配合比, 为更多类似严寒地区 的水利水电工程提供参考和改进依据试验结果表明: 当粉煤灰掺量[ 30% 时, 粉煤灰混凝土的抗冻融性能有所提高, 并且随着粉煤灰掺量的增加, 粉煤灰混凝土试块的强度和引气剂掺量均减小 : 粉煤灰混凝土; 抗冻性能; 严寒地区; 抗冻试验 + : TV42 3 :A A Study of Freeze- Resistance of Fly Ash Concrete for Cold Areas in Xingjiang HUANGChun- xia, DU ing- ji ( College of Water Reso rces and Architect ral Engineering, Northwest Agric lt ral and Forestry University , Yangling 712100, Shaanxi Province, China) Abstract:With the development of w ater conservancy and water electricity, the d rabilit y of hydra lic str ct res has attracted more attention, especially in cold regions. T his paper disc sses the key water projects at the Xiabandi in Xinjiang, designs the concrete mix ratio for the native place by a large n mber of experiments.T he res lts of tins experiment show that when t he fly ash content [ 30% , the f reeze- thaw resistance has been improved, and w ith the f ly ash content increased, the strength of concrete and the amo nt of air entraining agent has decreaseded. Key words: flyash concret e; frost resistance; cold area; antifreezing test , , 0 , F200 , F300 , , [ 1] , 1 , 1. 1 试验原材料的选取 , ( 1) : / 0P . O32. 5 ; [2] (2) : ; , ,