Specimen preparation mold for strength test of standard bricks for masonry

Abstract

The invention relates to a sample preparing mold for testing wall building standard brick strength. The sample preparing mold is mainly composed of a right side plate, a left side plate, a front clamp plate, a rear clamp plate, a front coaming, a rear coaming, a front pushing plate device, a rear pushing plate device, a right supporting device, a left supporting device, a coaming fixing device, vertical cords, a test piece control insertion plate, a seal device, and a mold fixing device, wherein the sample preparation process is completed through molding, grouting, vibrating, early stage maintenance, demolding, and other processes; neat paste for compressive strength test of a wall brick is adopted by the invention as a leveling material, the original sample maintenance period of 72 h is shortened to 4 h, and the detection efficiency is greatly increased; human factors, material region factors, and the like during the original leveling method are reduced to the minimum, so that severe deviation of test result can be eliminated, and the accuracy polycondensate and work efficiency of the compressive strength test of the wall brick is improved comprehensively.

Description

technical field [0001] The invention relates to a sample preparation device for testing building materials, in particular to a sample preparation mold for wall brick strength testing. Background technique [0002] Wall brick is a kind of building material widely used in the construction field, and its quality directly affects the quality of the building. An important technical parameter for the quality of wall-laying bricks is the compressive strength. In order to accurately test the compressive strength of wall-laying bricks, the key is to prepare test samples that meet national standards. [0003] The traditional method of making test samples of wall bricks is to use cement paste to manually plaster the surface, that is, on a horizontal workbench, put a pad of paper on the ground, and lay an appropriate amount of cement paste materials that are evenly stirred on the paper. , and then spread it evenly with a spatula. Then, the plane of the sample of the wall brick used fo...

AI Technical Summary

Problems solved by technology

[0004] The sample processing process of the above-mentioned traditional cement paste manual plastering is greatly affected by human factors. For example, the uniformity of the cement paste layer on the pressure surface of the sample is not good; the thickness of the cement paste layer is difficult to control, and even after curing. Localized large bubble cracks

Even between the same samples, there may be large differences in the way of manual plastering with this cement paste material, and these differences will directly affect the test results of the final compressive strength of the product, especially for samples that are in a critical state of strength. It is more difficult to determine whether the test results truly reflect the mechanical properties of the product

In addition, the traditional method also has shortcomings such as long curing period, low test efficiency, and poor test reproducibility.

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