Mitigation of Damage to Structures Supported on Slab-on- Ground Foundations Constructed Over Expansive Soils

这项工作旨在提供一种方法，可以用来预测受气候影响的路基下膨胀土中的不同土体移动。它的最终目的是减轻膨胀土运动对结构的破坏。该工作计划包括理论研究、实验室研究和实地研究，并将继续在最近完成的一个研究项目中进行实地测量。每月测量土壤水分、土壤吸力、地表高度和收缩/隆起深度，并对板下膨胀土变形形状的长期发展进行了测量，并与根据先前研究获得的现场数据建立的模型预测的结果进行了比较。这项工作的这些结果将阐明土壤差异运动作为气候、土壤吸力和粘土矿物学的函数，并与实际测量的野外值相关联。

The work is designed to provide a method by which differential soil movement can be predicted in expansive soils beneath slab-on- grade foundation influenced by climate. Its ultimate objective is to mitigate structural damage resulting from expansive soil movement. The work plan consist of theoretical, laboratory and field studies, and will continue the field measurements obtained during a recently completed research project. Monthly measurements will be made of soil moisture content, soil suction, surface elevation and depth of shrink/heave, and the long-term development of the distorted shape of swelling soil beneath slabs will be measured and compared with that predicted by a model developed from the field data acquired from the previous study. These results of the work will elucidate and relate soil differential movement as a function of climate, soil suction and clay mineralogy with actual measured field values.