Mechanical properties of molybdenum tailings concrete after exposure to high temperature.

The peak stress and elastic modulus of molybdenum tailings concrete show a decreasing trend, and reach the maximum reduction at 800 °C (52 % and 71 %).

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With the increase of temperature (20–800 °C), the surface color of the concrete becomes lighter, and obvious cracks began to appear from 400 °C, the mass loss ratio and peak strain of molybdenum tailings concrete show an increasing trend, and reach the maximum growth ratio (6.58 % and 34 %) at 800 °C.

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