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针对膨胀土的冻胀性测试存在的不足,设计了一套用于土体膨胀冻胀联合测试的装置和测试方法。在测试过程中使膨胀土在常温下充分补水后达到最大变形量后,再进行冻胀性测试。试验结果表明,该装置和方法可用于膨胀土的冻胀性测试,试验条件与自然界膨胀土的冻胀条件更为相似,且膨胀土在补水充分且达到最大膨胀量后,会发生剧烈的冻胀变形,在寒区膨胀土的工程设计中应充分考虑其危害性,加以相应的防冻胀措施。
Aiming at the insufficiency of the expansive soil in the frost heave test, a set of devices and test methods for the combined test of the soil expansion and frost heave were designed. In the test process so that the expansive soil full water at room temperature after the maximum deformation, and then the frost heave test. The test results show that the device and method can be used to test the frost heave of expansive soils. The experimental conditions are similar to the frost heaving conditions of expansive soils in nature. After the expansive soils are full of water and reach the maximum expansions, severe freezing occurs Expansion of deformation, in the cold area of expansive soil engineering design should give full consideration to its harmfulness, to be corresponding frost heaving measures.