High temperature effect of Zhangqiuhei

The test certification by experts shows that: under the action of real-time high temperature (normal temperature -850 degrees Celsius) and after cooling at high temperature (normal temperature -1300 degrees Celsius), Zhangqiu black granite specimens have been subjected to uniaxial compression. The total stress-strain curve of granite under real-time high temperature, the mechanical characteristics and acoustic emission characteristics of the whole process of rock failure after high temperature cooling are obtained.

Under the action of real-time high temperature, the mechanical properties such as Zhangqiu black strength deteriorate continuously; after cooling under high temperature, an abnormal phenomenon of strength does not decrease but increases with the temperature increase in the granite temperature range of 200 degrees Celsius to 600 degrees Celsius, and at 850 degrees Celsius After that, the strength decreases, showing obvious plastic characteristics, and the granite structure undergoes a phase transition behavior of brittle-plastic transformation; after the rock sample is subjected to high temperature above 900 degrees Celsius, the acoustic emission signal intensity decreases and the duration increases, especially after the peak intensity, Residual plastic deformation releases relatively dense acoustic emission signals. As the temperature of the rock sample increases, the time point of the sudden dense acoustic emission signal is delayed.

The hard texture of sesame black granite belongs to hard stone, acid and alkali resistance, corrosion resistance, high temperature resistance, sun resistance, ice and snow resistance, good durability, and the general durability is 70200 years. , rich in texture and gorgeous and noble decorative effect, it is a commonly used material in high-end decoration projects.

Zhangqiu Heiqi is mainly composed of crystals and millions of bacteria in it. The interior contains some water more or less. It needs to be breathed out through the pores, so that the stone is not easy to be diseased.

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