A Preliminary Study on Heating of Clays to Examine Possible Effects of Temperature on Soil-Mechanical Properties
A Preliminary Study on Heating of Clays to Examine Possible Effects of Temperature on Soil-Mechanical Properties
复制标题
通过加热粘土来检验温度对土壤力学特性可能产生的影响的初步研究
DOI：
10.3208/sandf1972.33.4_184
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发表时间：
1993
影响因子：
3.7
通讯作者：
Hajime Kobayashi
中科院分区：
文献类型：
--
作者：
I. Towhata;P. Kuntiwattanakul;Hajime Kobayashi
这是一份初步研究报告，该研究是在高温下对同类粘土进行固结试验之前进行的。在研究开始时，必须检查计划的加热是否会影响粘土的基本性质。因此，测试的粘土粉末在最高200°C的烤箱中加热，然后冷却并在阿特贝格极限，自由膨胀和无侧限压缩下进行常规测试。这些测试表明，预热粉末的行为方式与未加热粉末相同。此外，显微观察并没有发现加热后粘土外观的明显变化。由此得出结论，加热范围不影响粘土颗粒的土力学性质，热效应只通过粘土颗粒与孔隙水的相互作用发生。关键词：粘土，显微，理化性质，温度效应（IGC: D2/D8）
ABSTRACT This is a report of a preliminary study which was conducted prior to consolidation tests on the same kinds of clay undergoing elevated temperatures. It was considered imperative to examine at the beginning of study whether or not the planned heating affects the fundamental nature of clays. Therefore, the tested clay powders were heated in an oven under at the highest 200°C, followed by cooling and running those conventional tests on Atterberg limits, free swelling, and unconfined compression. Those tests revealed that pre-heated powders behaved in the same manner as unheated powders. Moreover, microscopic investigation did not detect a perceptible change in the appearance of clay after heating. Consequently, it was concluded that the employed range of heating does not influence the soil-mechanic nature of clay particles, and that the thermal effects should occur only through the interaction between clay grains and pore water. Key words: clay , microscopy, physico-chemical properties, temperature effect (IGC: D2/D8)