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本文主要从粘土力学性质的结构和物理化学因素的观点来分析膨胀土指标测试方法及其试验指标相互变化关系。土的不同测试方法,导致膨胀土指标表达粘土性质是不相同的。膨胀潜势决定于粘土矿物成分和环境因素所影响。测定膨胀土指标,控制测试温度,保持土与水体系结构组成和环境因素相一致的条件是重要的。根据此特点,本文提出量力环测试法,并根据测试结果——膨胀势划分不同等级,以判别膨胀土的性能。
This article mainly analyzes the expansive soil index test method and the mutual change relation of test index from the viewpoint of the structural and physicochemical factors of the mechanical properties of clay. Different soil testing methods result in different expansive soil indicators expressing clay properties. Swelling potential is determined by the composition of clay minerals and environmental factors. It is important to determine the expansive soil indicators, control the test temperature, and maintain conditions that are consistent with the structural composition of the soil and water system and the environmental factors. According to this characteristic, this paper puts forward a method for measuring the force loop, and classifies different grades according to the test result—expansion potential—to judge the performance of expansive soil.