Split type freezing and thawing testing machine

Abstract

The invention discloses a split type freezing and thawing testing machine which comprises a main box body and an outdoor machine, wherein the main box body comprises a test piece box and a heating device; the heating device is arranged beside the test piece box and communicated with the interior of the test piece box through a pipeline; the outdoor machine comprises a refrigerating device and a water pump; a grating is arranged in the test piece box; concrete test piece boxes are arranged in the grating; a hollow guide pipe connected end to end to form a square is also arranged in the test piece box; the section of the guide pipe is square; the outer ring of the guide pipe is fixed on the inner wall of the test piece box; a liquid inlet communicated with the interior of the guide pipe is formed in the outer wall of the guide pipe; the liquid inlet is connected with a third pipeline; a plurality of liquid outlets communicated with the guide pipe are formed in the outer wall of the guide pipe; the hole diameters of the liquid outlets become larger gradually from the direction closer to the liquid inlet to the direction far away from the liquid inlet; the split type freezing and thawing testing machine disclosed by the invention has the advantages that the uniformity of temperature in the test piece box is improved greatly, thereby avoiding temperature difference among multiple concrete test pieces and enabling the test data to be more accurate and reliable.

Description

technical field [0001] The invention relates to a freeze-thaw tester, in particular to a split-type freeze-thaw tester, which belongs to the technical field of concrete freeze-thaw performance test equipment. Background technique [0002] In order to test the anti-freeze performance of concrete specimens, it is necessary to simulate the temperature change of the natural environment and test the concrete specimens, which is called freeze-thaw test. In the prior art, the freezing equipment and the melting equipment are separated. During the cooling stage, the concrete specimen should be placed in the freezing box (the freezing medium is air). After completion, the specimen needs to be manually taken out of the freezing box and then put into the melting equipment. (water thawing), and then manually take out the test piece, put it into the freezer for the next cycle, and place the concrete test piece back and forth in the freezing and thawing equipment, which is labor-intensive,...

AI Technical Summary

Problems solved by technology

However, in the above-mentioned freeze-thaw testing machine, the liquid medium enters the test piece box through a single liquid inlet, and due to the obstruction of the concrete test piece, the temperature in the test piece box will be uneven, resulting in a gap between multiple concrete test pieces. There is a difference in temperature between, which increases the experimental error

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