摘要
软粘土中含有强结合水、弱结合水和自由水,结合水是影响软粘土流变性质的重要因素。采用改进的直剪蠕变仪,对软粘土中结合水对其流变性质影响进行试验研究,测试了一组含水类型不同而其他条件相同的粘土试样的流变性质。测试结果表明,土体的粘滞系数随强结合水含量的增加而减少,即流变变形阻力随强结合水增多而减小;而当含水量大于最大吸附结合水含量时,土粘滞系数随含水量的增大而增大,即流变变形阻力随弱结合水的增多而增大。试验结果分析表明,强结合水是土体产生流变的主要因素,而弱结合水则是相对次要因素。该研究成果有助于进一步认清土体流变的起源,对改进和完善现有流变固结理论有一定指导意义。
Soft clay contains firmly bound water, loosely bound water and free water. And adsorbed water（ firmly bound water and loosely bound water） is an important influencing factor on behavior of soil creep. By using of an under the same test conditions. The test results show that the viscosity coefficient of the soft clay reduces as the increase of firmly bound water, it means that creep strain resistance decreases with the increase of firmly bound water, However, when the content of water exceeds the limit of that of firmly bound water, the creep strain resistance increases with a rise in content of loosely bound water, it is concluded that firmly bound water is a key factor affecting creep of soft soil and loosely bound water is only a secondary factor. The test results have contribution to understanding of the Origins of soil theology and are of guiding significance for improvement and perfection on existing rheology and consolidation theories of soft soil.
出处
《科学技术与工程》
2007年第1期73-78,共6页
Science Technology and Engineering
关键词
强结合水
弱结合水
流变试验
流变仪改进
firmly adsorbed water loosely adsorbed water rheology tests improvement on creep apparatus.
