Elastic modulus of thermally treated fine grained sandstone using non-contact laser extensometer

DOI

10.2991/rare-16.2016.17How to use a DOI?

Keywords

Young's modulus;sandstone; laser extensometer; strain; thermal treatment

Abstract

Processes such as Underground Coal Gasification (UCG), Enhanced Oil Recovery (EOR) and underground disposal of nuclear waste involve the exposure of the surrounding rocks to extreme temperatures. At such high temperatures, the rock suffers substantial structural damage due to the anisotropy in the geotechnical properties of its constituent minerals. Due to variable thermal expansion within minerals, thermal stresses are generated in the rock micro-structure which cause change in the fracture pattern. New cracks may develop and pre-existing one may migrate and widen further; thereby reducing the mechanical strength of the rock. In this study, an attempt has been made to study the elastic modulus of thermally treated fine grained sandstone from the Dholpur district of Rajasthan. The elastic modulus was measured by using a MTS LX-Laser Extensometer. The rock specimens were thermally treated at various temperatures for a fixed duration. The change in the rock microstructure was studied viewing the rock specimen under a scanning electron microscope

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - N.N. Sirdesai
AU  - Mahanta Bankim
AU  - P.G. Ranjith
AU  - T.N. Singh
PY  - 2016/11
DA  - 2016/11
TI  - Elastic modulus of thermally treated fine grained sandstone using non-contact laser extensometer
BT  - Proceedings of the conference on Recent Advances in Rock Engineering (RARE 2016)
PB  - Atlantis Press
SP  - 105
EP  - 109
SN  - 2352-5401
UR  - https://doi.org/10.2991/rare-16.2016.17
DO  - 10.2991/rare-16.2016.17
ID  - Sirdesai2016/11
ER  -