| 风干含水量W65用作膨胀土判别分类指标的可行性研究 |
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| 引用本文： | 谭罗荣,张梅英.风干含水量W65用作膨胀土判别分类指标的可行性研究[J].工程地质学报(英文版),1994,2(1):15-26. |
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| 作者姓名： | 谭罗荣 张梅英 |
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| 作者单位： | 中国科学院岩土力学研究所,武汉430071 |
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| 摘 要： | 本文针对膨胀土的判别分类指标存在的一些问题,提出一种新指标--风干含水量W65.文中详细研究了它的测试方法,它与膨胀土的物理化学活性,物性指标及自由膨胀率ef等的关系。结果表明,W65能很好反映膨胀土的矿物组成或物理化学活性特征,而ef或WL则更能反映土的粒度组成或分散性特征。最后,在继承ef的判别分类成果基础上,考虑到塑性图的优点,建议采用W65-WL判别分类图。该图能区分膨胀土与典型红粘土,较单一指标判分膨胀土更合理适用。
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| 关 键 词： | 风干含水量W65 膨胀土 判别分类指标 |
THE PRACTICABILITY RESEARCH ON USE OF AIR-DRY MOISTURE CONTENT W_(65) AS IDENTIFICATION INDEX OF THE SWELLING SOIL |
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| Tan Luorong, Zheng Meiying, Shao Wumin, Hua Lili.THE PRACTICABILITY RESEARCH ON USE OF AIR-DRY MOISTURE CONTENT W_(65) AS IDENTIFICATION INDEX OF THE SWELLING SOIL[J].Journal of Engineering Geology,1994,2(1):15-26. |
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| Authors: | Tan Luorong Zheng Meiying Shao Wumin Hua Lili |
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| Institution: | Institute of Rock and Soil Mechanics,Academia Sinica,Wuhan 430071 |
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| Abstract: | new index, the air-dry moisture content W65, is recommended in the defect of free swelling ratio ef in the identification and classification of the swelling soil. The weasurement method of the index. its relationship to the physicochemical activities. moisture index and free swell ef of the swelling soil are also studied in this paper. The results indicate that the W65 can be better than ef or WL to reflect properties and composition or physicochemical activities of the swelling soil, and ef orWL is better than W65 to reflect property of the size composition or dispcrsity. Finally, on the basis of the results of identification and classification of ef, in consideration of the advantage of the plasticity chart adopted,a new mcthod of W65-WL chart is recommended for identifying and classifying the swelling soil. it is applicable to identify swelling soil and red clay, and is more reasonable and applicable than ef. |
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| Keywords: | Air-dry moisture content W_65 Swelling soil Identification and classification index |
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