Experiment furnace and experiment method for representing concrete high-temperature burst degree

Abstract

The invention belongs to the technical field of experiment furnaces, and particularly relates to an experiment furnace and an experiment method for representing concrete high-temperature burst degree.The experiment furnace comprises an electric furnace and a test piece placement device, the electric furnace is composed of an outer shell, an inner bin and an electric furnace temperature controller, the inner bin is formed by building two layers of refractory bricks, heating elements are arranged between the refractory bricks, the temperature controller is movably connected with the outer shell, and a furnace door is arranged right ahead the outer shell; the test piece placement device is composed of a tray, a connection rod, a motor, a pressure sensor and a second thermocouple, the motor is arranged at the bottom of the inner bin, an output shaft of the motor is connected with the lower end of the connection rod, the upper end of the connection rod is movably connected with the tray, and the pressure sensor is arranged in a cavity between the outer shell and the inner bin.

Description

technical field [0001] The invention belongs to the technical field of test furnaces, and in particular relates to a test furnace and a test method for characterizing the high-temperature cracking degree of concrete. Background technique [0002] High-strength concrete materials play an important role in the process of urbanization. High-strength concrete can be seen everywhere on almost all roads, bridges and housing. With the widespread use of high-strength concrete, its own performance has been constantly explored by people. In the process of exploration, it was found that some high-strength concrete will burst in high-temperature environments; and in the course of the experiment, as the ambient temperature increases, the number of bursts will increase with time and the ambient temperature. The concrete test block will continue to burst and shed fragments, and the quality of the test block will continue to decrease. Regarding the bursting of high-strength concrete in hi...

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Problems solved by technology

Regarding the bursting of high-strength concrete in high-temperature environments, many scholars have conducted in-depth research, but most scholars have focused on heating high-strength concrete at high temperatures and then returning it to normal temperature to observe its quality change, the number and size of fragments, and use this to judge The degree of cracking of concrete, there are not many studies on the quality change of high-strength concrete under high temperature in many literatures

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