It is easy to form subgrade disease on swelled ground because swelled ground has features of swelling and softening by absorbing water shrinking and cracking by losing water and repeated changing.
膨胀土具有吸水膨胀软化，失水收缩开裂及反复变化的特点，易形成路基病害。
2
Repeated exposure may cause skin dryness or cracking.
长期接触可能引起皮肤干裂。
3
In the case of the repeated loading, this paper deduces the formula of the maximum reinforcement ratio which can prevent the cracking of the axial compressive pillar from cracking when it is unloaded;