Sample preparation mold for non-standard brick strength test of masonry wall and its use method

Abstract

The invention relates to a mold for preparing a sample for a walling non-standard brick strength test and a use method thereof. The mold is composed of a bottom plate, a square surrounding frame, a front tightly-jacking device, a left tightly-jacking device, a sealing device and two mold fixing devices; the lower end of the square surrounding frame is provided with grooves for mounting sealing gaskets; two side-adjacent surrounding plates of the square surrounding frame are respectively provided with the front tightly-jacking device and the left tightly-jacking device; two opposite surrounding plates of the square surrounding frame are each fixedly provided with the mold fixing device. According to the testing mold for a walling brick and the use method thereof, a net slurry material for the walling brick compressive strength test is adopted as a leveling material, the required sample-maintenance period is shortened from the original 72 hours to 4 hours, and thus the detection efficiency is greatly improved; and influence of artificial factors and material regional factors in an original artificial leveling way is reduced to the lowest, and thus the accuracy of test results is ensured.

Description

technical field [0001] The invention relates to a sample preparation device for testing building materials, in particular to a sample preparation mold for the strength test of non-standard bricks for building walls, that is, secondary molding sample preparation (using the method of vibrating grouting on the upper and lower surfaces of the whole sample) ) is a device for making standard samples for compressive strength tests. 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 non-standard bricks for laying walls is to use cement paste to manually plaster the sur...

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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, and the thickness of the cement paste layer is also difficult to control, and even after curing. There will be local large bubble cracks; in addition, this cement paste material is artificially plastered, so that there may be large differences even between the same samples, 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 judge whether the test results truly reflect the mechanical properties of the product; in addition, the traditional method is too long for the curing period, not only the test efficiency is low, but also the test reproducibility is poor

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