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Road surface interlayer cementing shearing strength test method

A bonded shear resistance and strength test technology, which is applied in the direction of applying stable shear force to test the strength of materials, measuring devices, instruments, etc., can solve problems such as unreasonable loading methods and large test errors, and achieve accurate and reliable test data , easy to carry effect

Inactive Publication Date: 2008-10-01
SOUTHEAST UNIV
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AI Technical Summary

Problems solved by technology

[0004] Technical problem: The purpose of the present invention is to provide a method for testing the shear strength of bonding materials between pavement layers, which is easier to solve the problem of large test errors due to unreasonable loading methods, and the test method is simpler

Method used

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  • Road surface interlayer cementing shearing strength test method
  • Road surface interlayer cementing shearing strength test method
  • Road surface interlayer cementing shearing strength test method

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Embodiment Construction

[0022] The test using the present invention to test the interlayer bonding material is specifically divided into indoor and outdoor conditions.

[0023] 1. Indoor test (as attached figure 2 )

[0024] Form Marshall specimens according to the relevant test methods of "Test Regulations for Asphalt and Asphalt Mixtures in Highway Engineering" (JTJ052-2000), and compact each side 75 times. The number of specimens is not less than 6, and each pair is divided into one group. Wipe the two ends of each group of test pieces clean and keep them dry. After painting the surface with a waterproof adhesive layer, glue the two test pieces together.

[0025] Knot together to make a test piece for use. To test the shear strength of the bridge deck pavement waterproof bonding layer, replace one specimen in each group with a specimen made of the same material as the top surface of the bridge deck (such as cement concrete blocks, steel plates, etc.). The specific test steps are as follows:

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Abstract

An adhesive shearing strength between surface layers test method is a method for effective evaluation of the shearing strength of adhesive materials between surface layers, especially an easier solution whose test mode is also easier of the current problem that the shearing strength of adhesive materials between surface layers is inaccurately tested because of a unreasonable loading method. This method has the following steps: 1. indoor test: step one, preparing a sample and fixing the sample; step two: starting a motor and do a twisting and shearing test; step three, collecting and analyzing data. 2. Field test: step one: drilling a core of the surface layer, but not taking it out, and then drying the upper surface of it with hot wind; step two, bonding a shearing test fixture head and a core sample together; step three, implementing a twisting and shearing test after 30 minutes; step four, collecting and analyzing the data.

Description

technical field [0001] The present invention is a method for effectively evaluating the shear strength of interlayer bonding materials of pavement, especially a method that can easily solve the inaccurate test of the shear strength of bonding materials between pavement layers at present, and belongs to the field of highway pavement performance testing technology field. Background technique [0002] Asphalt pavement is commonly used in highway construction in our country. In order to make the multi-layer composite system of expressway asphalt pavement have good structural bearing capacity and durability, and improve the ability to resist water damage, more and more people pay more and more attention to the interlayer treatment technology. Multi-layer pavement is generally paved in layers, and the joint surface between layers is often a weak link due to construction pollution, material property differences and other reasons between layers. Under the action of driving load (e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N19/04G01N3/24
Inventor 赵永利许涛黄晓明王爽
Owner SOUTHEAST UNIV
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