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Correlation analyses of effects of temperature on physical and mechanical properties of clay

Author:
Zhang, Weiqiang, Sun, Qiang, Zhang, Yuliang
Source:
Environmental earth sciences 2018 v.77 no.17 pp. 614
ISSN:
1866-6280
Subject:
clay, compression strength, mechanical properties, porosity, regression analysis, specific heat, temperature, thermal conductivity, China
Abstract:
In determining the physical and mechanical parameters of clay, it is sometimes necessary to determine them indirectly from other parameters since they cannot be measured directly from laboratory or field tests. In order to determine the effect of temperature on the behavior of clay, an indirect approach is used here by analyzing the changes of mass ([Formula: see text]), density ([Formula: see text]), porosity ([Formula: see text]), P-wave velocity ([Formula: see text]), thermal conductivity ([Formula: see text]), specific heat capacity (c), resistivity (R) and uniaxial compressive strength (f) of clay from eastern China for a temperature range between 20 and 800 °C. The results indicate that temperature has a significant effect on these parameters. Comparisons between [Formula: see text] and [Formula: see text], [Formula: see text] and [Formula: see text], [Formula: see text] and [Formula: see text], [Formula: see text] and [Formula: see text], [Formula: see text] and f, R and f show a linear change among these parameters,whereas the relationships among [Formula: see text] and [Formula: see text], [Formula: see text] and [Formula: see text], [Formula: see text] and R, [Formula: see text] and [Formula: see text], [Formula: see text] and f are exponential. It is difficult to obtain these relationships by using regression analysis with high levels of accuracy. Further refinement is therefore required.
Agid:
6126733