Secondary clay minerals in rock may bring about marked changes in strength and deformability of parent minerals, mineral aggregation and rock and promote rock to evolve toward loose medium.

次生粘土矿物的形成将引起源矿物、矿物集合体及岩块的强度与变形特性的显著变化，诱发岩石向松散介质转化。

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The red clay and secondary red clay widely distributed in Liuzhou City have low-middle swell shrinking property as well as more higher strength.

柳州市广泛分布的红粘土及次生红粘土层强度普遍较高，但具有弱-中等的胀缩性。

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The author considers that temperature and sustained time are the important conditions of mutual compensation during the diagenetic transition of clay minerals, and the pressure is a secondary factor.

认为温度和持续时间是粘土矿物成岩转变的互相补偿的重要条件，压力是次要因素。

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