Thermal Properties of Mudstone at High Temperature
Publication: International Journal of Geomechanics
Volume 14, Issue 5
Abstract
An experimental study of the thermal damage properties of mudstone at high temperature can serve as a reference for problems in rock mechanics under high temperature, such as in oil exploration, geothermal resource development, and nuclear waste treatment. In this study, a uniaxial compression test of mudstone was conducted using the MTS 810 electrohydraulic servo system and MTS 652.02 high-temperature furnace under different temperatures ranging from 25 to 800°C to analyze the thermal damage properties of mudstone at high temperature. The main results of the study are as follows: the ductility of mudstone is improved under the effect of high temperature, and the failure mechanism exhibits a transition trend from brittleness to ductility; the elastic modulus increases from normal temperature to 400°C and then decreases rapidly when the temperature is over 400°C; and by defining the damage by tangent deformation modulus and combining the test data from uniaxial compression tests of mudstone at high temperature, the damage evolution rules of mudstone at high temperatures are obtained.
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Acknowledgments
This research was supported by the National Natural Science Foundation of China (Grant Nos. 51074166 and 51104128), the National Basic Research Program of China (Grant No. 2010CB226800), the Doctoral Program Foundation (Grant No. 20120095110013), the Science and Technology Projects of the Urban and Rural Housing Ministry of Construction of China (Grant No. 2011-k3-5), the Joint Research Project of Prospective Produce-Learn-Research (Grant No. BY2012085), and the Blue Project of Jiangsu Province.
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Published In
International Journal of Geomechanics
Volume 14 • Issue 5 • October 2014
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Aug 14, 2012
Accepted: Apr 5, 2013
Published online: Apr 8, 2013
Discussion open until: Sep 1, 2014
Published in print: Oct 1, 2014
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