Sample for testing adhesion and anti-shearing strength of refractory mortar and testing method thereof

Abstract

The invention relates to a sample for testing adhesion and anti-shearing strength of refractory mortar and a testing method thereof. According to the scheme, the sample is a whole formed by three refractory bricks in a bonding mode through the refractory mortar to be tested; the sample has three specific shapes that 1, upper planes and lower planes of the three refractory bricks are all flush with each other; 2, the lower planes of the three refractory bricks are flush with one another, and the upper plane of the middle refractory brick is higher than the upper planes of the refractory bricks at the two sides; 3, the upper plane of the middle refractory brick is higher than the upper planes of the refractory bricks at the two sides, and the lower plane of the middle refractory brick is concaved into the lower planes of the refractory bricks at the two sides. Materials of the three refractory bricks are matched with the materials of the refractory mortar to be tested, and refractory mortar bonding surfaces of the three refractory bricks are original brick surfaces of the refractory bricks. The three refractory bricks have the shapes that the middle refractory brick is shaped like a cuboid or a cube, and the refractory bricks at the two sides are each shaped like a cuboid or a cube or a trapezoid with the vertical bonding surface. According to the sample for testing the adhesion and anti-shearing strength of the refractory mortar and the testing method thereof, the preparation is convenient, and the sample is large is size; the testing process of the prepared sample is easy, and the testing result is accurate and reliable.

Description

technical field [0001] The invention belongs to the technical field of refractory material samples. In particular, it relates to a sample for testing the bonding shear strength of refractory mud and a testing method thereof. Background technique [0002] The bonded shear strength of refractory mud at room temperature is of great significance to ensure the stability and quality of high-temperature kiln lining masonry, while the bonded shear strength of refractory mud at high temperature is more instructive for the actual use process. The bonded shear strength of refractory mud is the ratio of the maximum shear force that the sample can bear to the bonded area, that is, the ultimate average shear stress of the bonded surface. The original YB / T 5124-93 stipulates that during the measurement, the L-shaped test block made of refractory bricks is double-L reverse bonded with the refractory mud to be tested, and then dried or fired at room temperature. Shear test until the bonded...

AI Technical Summary

Problems solved by technology

However, it is also difficult to ensure that the bonding surface of this sample is the original brick surface, even if it can, it also increases the difficulty of sample preparation; in addition, it is not easy to accurately measure the angle of the bevel

[0004]The two existing samples used for testing the bonded shear strength of refractory mortar both have small sample size, difficult preparation and difficulty in ensuring the original brick surface Disadvantages as a bonding surface

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