【作者】 胡晓波； 梁卿达； 张艳锋； 张士刚；

【Author】 HU Xiao-bo,LIANG Qing-da,ZHANG Yan-feng,ZHANG Shi-gang (School of Civil Engineering and Architecture,Central South University,Changsha 410075,China)

【机构】 中南大学土木建筑学院；

【摘要】 本文就复掺S95矿粉与ⅡFA和环境因素对混凝土收缩性能的影响进行了试验分析。试验结果表明:复掺S95矿粉和ⅡFA能够明显的减小收缩,当S95/ⅡFA为4:6,则收缩结果较其他配比小,施工性能良好;试验环境为湘中地区5、6月份期间自然环境条件,总体温度有较大波动,相对湿度较高,试验测得混凝土的收缩相对标准养护环境下混凝土的收缩较小,45d的混凝土收缩率较后者减少40%。更多还原

【Abstract】 In present paper,the effect of mixed mineral admixture and environment factors of the shrinkage of the concrete was analyzed.The experimental results show that the Shrinkage of concrete can be reduced significantly by the mixed mineral admixture of fly ash and slag powder, especially when the ratio of the S95/ⅡSlag was 2/3.Under natural environment,there were large temperature fluctuations and high relative humidity in Changsha.The shrinkage of the concrete under the natural environment was less than that under the standard environment,especially 40% after 45 days.更多还原