掺石灰粉对粉煤灰再生混凝土抗冻性能的影响  

Influence of Lime Powder on Freezing-Thawing Performance of Fly Ash Recycled Concrete

作　　者：朱涛[1] 吴相豪[1] 袁潘[1] 

机构地区：[1]上海海事大学海洋环境与工程学院,上海201306

出　　处：《粉煤灰》2013年第1期40-42,共3页Coal Ash China

摘　　要：采用快速冻融试验方法,研究了石灰粉掺量对粉煤灰再生混凝土抗冻性能的影响规律。试验结果表明:石灰粉等量取代部分粉煤灰对粉煤灰再生混凝土抗冻性能有一定的影响,随着石灰粉等量取代粉煤灰率的增加,粉煤灰再生混凝土抗冻性能是先增强后减弱,掺适量的石灰粉可以改善粉煤灰再生混凝土的抗冻性能,石灰粉最佳取代率为10%左右。The influence of lime powder on freezing-thawing performance of fly ash recycled concrete was investigated by accelerated freezing and thawing test. The results showed that： substituting lime powder for part of isometric fly ash has a certain influence on the frost resistance of fly ash recycled concrete, frost resistance of recycled concrete increased firstly and then decreased with the ratio of lime powder raising, thence, an appropriate amount of lime powder could improve the frost resistance of recycled concrete, the optimum replacement ratio is about 10%.

关 键 词：粉煤灰 石灰粉 再生混凝土 抗冻性能 

分 类 号：TU528.2[建筑科学—建筑技术科学]