膨胀岩石分为：微膨胀岩、弱膨胀岩、强膨胀岩三种。
重点讨论了建立湿度应力场理论的两大要素：膨胀岩石含水率变化对其力学性质的影响和岩体中湿度变化规律。
Two basic problems, which are change of mechanical properties of swelling rock by effects of water content and the humidity field swelling rock mass, are discussed.
地基上都是破瓦残砾，堆满了岩石，冬天结冰膨胀，然后因解冻而收缩，每一年都导致房子上下挪移，在季节变换中发出哀叹。
Debris in the foundation, which is filled with rocks, freezes and expands in the cold, then thaws and shrinks, so that the house moves up and down each year, sighing with the seasons.
这种膨胀的原因之一是存在的五点五十八百分之结合水原油珍珠岩岩石。
This expansion is due to the presence of two to six percent combined water in the crude perlite rock.
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