青藏铁路预应力梁波纹管压浆材料的试验研究  

Experimental Study on Mudjacking Material in Prestressed Beam in Qinghai-Tibet Railroad

作　　者：马莉[1] 王起才[1] 李盛[1] 

机构地区：[1]兰州交通大学,甘肃兰州730070

出　　处：《水利与建筑工程学报》2008年第4期40-42,共3页Journal of Water Resources and Architectural Engineering

基　　金：铁道部"青蓝工程"基金项目(2005G032)

摘　　要：针对青藏高原环境、气候特点及压浆材料本身的特点,通过试验采用体积排水法测试水泥浆体预养前后、冻结前后体积变化率及水泥浆体冻胀后、预养前的体积变化率,分析研究在同一外加剂和同一水灰比的情况下水泥浆体体积变化率与预养时间以及温度变化的关系,研究得出,水泥浆体体积变化率与预养时间成对数函数关系,与温度变化的关系可用多项式来体现。Aimed at the environmental quality in the region of Qinghai - Tibet Plateau and the features of nudjacking material, the volume change rates of the cement paste before and after the precured time and freezing are measured as well as after freezing and before precuring through a volume draining method, and the relationship between the volume change rate and the precured time and temperature of the cement paste under the condition of same admixture and water cement ratio is analyzed. The research results show that the volume change rate of the cement paste has a logarithmic function relationship to the precured time, and a multinomial relationship to the temperature.

关 键 词：水泥浆体 体积变化率 预养时间 温度 

分 类 号：U448.2[建筑科学—桥梁与隧道工程]