The plastic deformation of expansive clay can be reflected on the height, area and volume changes of soil body, but more significantly on height change due to the confining stress.
在侧限作用下，膨胀土体的范性变形在高度、面积及体积上均有所体现，但在高度方向上的发育最为充分；
Expansive soil is a kind of swell-shrinking clay with strong damaging to highway. In order to lessen the damage, some efficient measures must be taken with from design.
膨胀土是一种吸水膨胀、失水收缩、胀缩变形显著的粘性土，其主要工程性质对公路有比较强的破坏作用，要减少膨胀土对路基路面的破坏，必须从设计上采取措施加以处理。
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