Variations of Strength, Resistivity and Thermal Parameters of Clay after High Temperature Treatment

IF 2 4区 地球科学 Q2 GEOCHEMISTRY & GEOPHYSICS Acta Geophysica Pub Date : 2016-12-28 DOI:10.1515/acgeo-2016-0090
Qiang Sun, Weiqiang Zhang, Yuliang Zhang, Lining Yang
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引用次数: 9

Abstract

This paper reports the variations of strength, resistivity and thermal parameters of clay after high-temperature heating. Experiments were carried out to test the physical properties of clay heated at temperatures ranging from room temperature to 800°C in a furnace. The experiment results show that below 400°C the uniaxial compressive strength and resistivity change very little. However, above 400°C, both increase rapidly. At a temperature under 400°C, the thermal conductivity and specific heat capacity decrease significantly. The thermogravimetric analysis (TG) and differential scanning calorimeter (DSC) test indicate that a series of changes occur in kaolinite at temperatures from 400 to 600°C, which is considered the primary cause of the variation of physical and mechanical properties of clay under high temperatures.
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高温处理后粘土强度、电阻率及热参数的变化
本文报道了高温加热后粘土的强度、电阻率和热参数的变化。实验测试了粘土在室温至800℃的炉内加热后的物理性能。实验结果表明,在400℃以下,单轴抗压强度和电阻率变化很小。然而,在400°C以上,两者都迅速增加。当温度低于400℃时,导热系数和比热容显著降低。热重分析(TG)和差示扫描量热仪(DSC)测试表明,在400 ~ 600℃高温下,高岭石发生了一系列变化,这被认为是高温下粘土物理力学性能变化的主要原因。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Acta Geophysica
Acta Geophysica 地学-地球化学与地球物理
CiteScore
3.90
自引率
13.00%
发文量
251
审稿时长
5.3 months
期刊介绍: Acta Geophysica is open to all kinds of manuscripts including research and review articles, short communications, comments to published papers, letters to the Editor as well as book reviews. Some of the issues are fully devoted to particular topics; we do encourage proposals for such topical issues. We accept submissions from scientists world-wide, offering high scientific and editorial standard and comprehensive treatment of the discussed topics.
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