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Experimental Investigation of the Effect of High Temperature on the Mechanical Properties of Rocks Used as Building Blocks

机译：Experimental Investigation of the Effect of High Temperature on the Mechanical Properties of Rocks Used as Building Blocks

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摘要

Three different types of rock samples were heated to 1000 ℃ to investigate the effect of high temperature on the mechanical properties of the rock. While high temperature has minimum effect on the longitudinal wave velocity of ignimbrite rock, it has a maximum impact on granite and travertine rocks. The compressive strength capacities of ignimbrite and travertine rock samples up to 500 °℃ has close to each other, and they are little affected by the temperature increase; however, with each temperature increase step, the compressive strength of granite decreases and when it reaches 600℃; it loses close to 50% of its compressive strength. While the threshold temperatures of the mechanical parameters of ignimbrite and travertine are about 200℃, it is 100 ℃ for granite. In addition, the maximum color change has observed macroscopically in ignimbrite rocks when the temperature exceeds 400 ℃.

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