The influence of high temperatures on limestone P-wave velocity and Schmidt hammer strength

Thermal effects on the physical properties of limestones from the Yucatan Peninsula

“…The chemical reactivity show a large variation due to their differences in crystalline structure and the nature of impurities (silica, iron, magnesium, manganese, sodium, and potassium, to name a few) [2].…”

Change in the physical­mechanical and decorative properties of labradorite under thermal exposure

“…Most of the previous studies were conducted when heating samples to a preset temperature level followed by testing them at room temperature. Research into the test of granite [5], limestone [6], marbles [9], and gabbro [14], shows that at a temperature to 300 °C the samples of stone are almost not damaged. However, in a temperature range from 300 to 700 °C there occur the micro-structural changes and irreversible thermally-induced cracks due to the different thermal expansion of minerals.…”

“…Micro-defects in natural stones, which emerged as a result of heating, reduce the velocity of ultrasonic wave propagation. Thus, in [6], it was found that for limestone the dependence of ultrasonic wave propagation on temperature of heating is described by the third-order polynomials. In this case, the velocity of ultrasonic wave propagation was tested using cubic samples with the size of edges of 3 and 5 cm.…”

“…Spots arise due to the oxidation of iron, which is contained in the minerals of rock. Large areas of oxidized iron appear at the surface of samples of gabbro [7] and limestone [6]. To a lesser extent, oxidized iron appears at the surface of granite samples [8].…”

Current Status of Research on Thermal and Mechanical Properties of Rock under High-Temperature Condition

“…Linear thermal expansion coefficients for different direction for rocks (Siegesmund and Dürrast, 2011) 시 온도의 증감에 따라 변화하는 경향을 보인다. 선행 연구들에 따르면, 일반적으로 온도가 증가함에 따라 암 석의 탄성파 속도, 탄성계수, 단축압축강도, 삼축압축강 도, 점착력이 모두 감소하는 것으로 보고되고 있다 (Kılıc, 2006, Heuze, 1983, Bauer와 Johnson, 1979, Dwivedi 외, 2008, Yavuz 외, 2010, Chen 외, 2012, Lokajıcek 외, 2012, Zhao 외, 2012, Chung 외, 1992, Lee와 Lee, 1996, Lee 외, 1996, KIGAM, 2000.…”