Mechanical property detecting method for shale porous brick masonry

A detection method and technology of porous bricks, which can be applied in measurement devices, scientific instruments, strength characteristics, etc., can solve problems such as mechanical properties that are not yet available

Inactive Publication Date: 2009-06-17
郝亮
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Problems solved by technology

But so far, there is no good detection method for mechanical properties

Method used

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Embodiment Construction

[0014] Firstly, 7 groups of 24 axial compression specimens, 11 groups of 45 double-sided shear specimens, and 2 groups of bending tensile specimens (along There are 1 group of bending tensile test pieces and 1 set of bending tensile test pieces along the through seam), and 1 set of 3 main tensile stress test pieces.

[0015] The design strength of masonry mortar is M7.5, M10, M15 respectively, and the masonry quality of the test piece is at a medium level.

[0016] The test age of the specimen is 28 days, and the loading surface of all specimens is smoothed with 1:3 cement mortar before the test, and the leveling layer is 10mm. In order to ensure that the masonry is evenly stressed, the leveling layer is checked for flatness with a level. After the leveling layer was cured for 3 days, the test was started. The axial compression test is carried out in a 2000KN pressure testing machine. In order to ensure the uniform load distribution of the test piece, the upper and lower en...

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Abstract

The invention relates to a method for detecting the mechanical performance of shale perforated brick masonry, and the steps are as follows: (1) difference grouping is carried out according to different brick types, brick body strengths and masonry mortar strengths; (2) the loading surfaces of all test pieces are leveled by 1:3 cement mortar before test, and the leveling layer is 10mm; the flatness is checked, and the maintenance lasts three days; (3) axle center compression test is carried out in a 2,000KN pressure test machine; (4) steel plates with the thickness being 50mm are cushioned at the upper end and the lower end of a center compression test piece, and hydraulic loading speed is controlled around 0.3-0.5Mpa/s; (5) a cleavage test and a bending tension test are finished on a 250KN vertical load frame by adopting an oil jack, a pressure sensor and a load indicator; (6) a right-angle load framework welded by steel plates is applied in a principal tensile stress cleavage test. The detection method can precisely detect the mechanical performance of the shale perforated brick masonry, thus providing mechanical parameters for shale perforated brick masonries used in building, and ensuring the building quality.

Description

technical field [0001] The invention relates to a method for detecting the mechanical properties of shale porous brick masonry. Background technique [0002] The traditional testing methods for the mechanical properties of building materials are mainly for fired solid bricks. After the emergence of a new type of building material - shale porous brick, it has been widely used because of its light weight, high strength and good sound insulation and heat insulation performance. But so far, there is no good testing method for mechanical properties. Contents of the invention [0003] The purpose of the present invention is to provide a method for detecting the mechanical properties of shale porous brick masonry. [0004] The detection method of the mechanical properties of the shale porous brick masonry comprises the following steps: [0005] (1) According to the differences in brick type, brick body strength and masonry mortar strength, group the axial compression test piec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/00G01N33/38
Inventor 郝亮魏影
Owner 郝亮
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