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Feng Jinliang, Zhao Zesang, Gao Guorui. 1993: THE EFFECT OF AMORPHOUS FREE FERRIC OXIDE ON THE PHYSICAL PROPERPTIES OF CLAY SOIL IN THE PROCESS OF DEHYDRATION. JOURNAL OF ENGINEERING GEOLOGY, 1(2): 85-92.
Citation: Feng Jinliang, Zhao Zesang, Gao Guorui. 1993: THE EFFECT OF AMORPHOUS FREE FERRIC OXIDE ON THE PHYSICAL PROPERPTIES OF CLAY SOIL IN THE PROCESS OF DEHYDRATION. JOURNAL OF ENGINEERING GEOLOGY, 1(2): 85-92.

THE EFFECT OF AMORPHOUS FREE FERRIC OXIDE ON THE PHYSICAL PROPERPTIES OF CLAY SOIL IN THE PROCESS OF DEHYDRATION

  • Publish Date: 1993-06-22
  • In the clay soil more or less amorphous free ferric oxide is present. Properties of clay soil are effected by the amorphous free ferric oxide and its crystals. In general the amorphous free ferric oxide effects the physical, hydrographical and engineering geological properites of clay soil. In this paper, the variation in properties of clay soil is studied by experiment in the process of dehydration. The authors hope this study is of benefit to geotechnical testing, geotechnical investigation and soil physics. The main results are as follows: (1) Liquid limit, plastic limit, and shrinkage limit in clay soil increase with increasing content of amorphous free ferric oxide, but in the process of dehydration of amorphous free ferric oxide this strengthening action decays. (2) In the clay soil amorphous free ferric oxide enhances its shrinkage. In case amorphous free ferric oxide was crystallized, the strengthening action decays or vanished, in this time strengthening action turned to restraint action on shrinkage. (3) In the process of dehydration, amorphous free ferric oxide forms structural connection, mechanical strength is enhenced by this connection in the clay soil, and the connection restrains expansion of clay soil.
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  • [1] 顾新运等.温度对微结晶演化铁形成与性质的影响.土壤学报,1989; 26(1).

    [2] 罗鸿禧,陈守义.湛江灰色粘土的工程地质特性.水文地质及工程地质,1981,(5)

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