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首页> 外文会议>Pan-American conference on unsaturated soils >Understanding the Shrink/Swell (I_(SS)) Test for Quantifying Ground Movements in Reactive/Expansive Clays Due to Soil Moisture Variations
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Understanding the Shrink/Swell (I_(SS)) Test for Quantifying Ground Movements in Reactive/Expansive Clays Due to Soil Moisture Variations

机译：了解收缩/膨胀（I_（SS））测试以量化由于土壤水分变化而在反应性/膨胀性粘土中的地面运动

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During the 1960's and 70's as the awareness of the potential for clay-based soils to change volume with variations in soil moisture, practitioners had difficulty with quantifying these ground movements. Also in Australia new housing construction changed from the more movement tolerant flexible clad dwellings with timber floors, to slab on ground (raft slabs) and brick and/or blockwork (cinderblock) walls, which are very sensitive to all types of ground movement. Initially practitioners used the Atterberg limit suite of tests or one or more of them. Over time, there was one school of thought that contended that in preparing a sample for the Atterberg limit tests, the natural structure of the soil would be destroyed; therefore the outcome would not correlate well with the performance of the natural insitu clay. The proponents of this theory developed the shrink/swell test.
机译：在1960年代和70年代，由于意识到粘土基土壤随着土壤湿度变化而改变体积的潜力，从业人员很难量化这些地面运动。同样在澳大利亚，新的住房建设从具有更高运动耐受性的柔性复合地板（带木地板）变为地面平板（筏板）和砖砌和/或砌块墙体（煤渣砌块），对所有类型的地面运动都非常敏感。最初，从业人员使用Atterberg极限测试套件或其中的一项或多项测试。随着时间的流逝，有一种流派认为，在为阿特伯格极限测试准备样品时，土壤的自然结构将被破坏;因此结果不会与天然原地粘土的性能很好地相关。该理论的支持者发展了收缩/膨胀试验。

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