THERMAL SCIENCE
International Scientific Journal
TEMPERATURE DEPENDENCE OF YOUNG’S MODULUS OF RED SANDSTONE
ABSTRACT
In the underground rock diagenetic process, or artificial excavation in rock engineering, it is possible to make experience in the high temperature. The temperature dependence of Young’s modulus of red sandstone was characterized by impulse excitation technology. It is shown that after heating-cooling cycle the Young’s modulus of red sandstone decreases down to about 90% from the room temperature up to 800°C of its initial value. The significant change of Young’s modulus with temperature is attributed to thermal-induced damages in red sandstone, including the rock composition variation, mass loss, mineral phase composition change, porosity increasing, grain trans-granular, micro-cracks penetrated and disruption.
KEYWORDS
PAPER SUBMITTED: 2018-08-22
PAPER REVISED: 2018-11-20
PAPER ACCEPTED: 2019-01-05
PUBLISHED ONLINE: 2019-05-26
THERMAL SCIENCE YEAR
2019, VOLUME
23, ISSUE
Issue 3, PAGES [1599 - 1606]
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