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本文主要从矿物学角度利用X-射线衍射仪研讨了蒙脱类矿物因晶格胀缩引起蒙脱土体的体积变化。研讨了含水量、温度,交换性阳离子对其胀缩性的影响,估算了晶格胀缩引起土体膨胀和收缩量的大致百分比或比率下限。
In this paper, we mainly study the volume change of montmorillonite due to the expansion and contraction of montmorillonite minerals by means of X-ray diffraction from the perspective of mineralogy. The effects of water content, temperature and exchangeable cations on their swelling and shrinking were discussed. The approximate percentage of the expansion and contraction of the soil caused by lattice expansion and contraction was estimated.