冻融作用下花岗岩和石英岩的宏观力学性能
摘要
同岩石在冻融作用下的损伤规律，开展花岗岩与石英砂岩的冻融循环试验、单轴压缩试验，并通过质量变化、应力
应变曲线及宏观微观破坏模式来揭示两种岩石在冻融和荷载的双重耦合作用下的破坏机理。研究结果表明：（1）随
着冻融循环次数增加，岩样的干质量有所下降，饱和质量及吸水率均出现先下降后上升的现象。（2）随冻融时次数
的不断增加，花岗闪长岩其破坏形式由复合拉剪破坏演变为拉伸破坏，石英砂岩破坏模式为复合拉剪破坏，二者抗
压强度均减小，最大应变均增大。
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