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Testing method for cement concrete double-layered road surface bonding coefficient

A technology of cement concrete and testing method, which is applied to measuring devices, instruments, and mechanical devices, etc., can solve problems such as difficulty in testing the bonding coefficient of double-layer pavement, and achieve the effects of efficient testing, improving testing progress, and reducing experimental difficulty.

Inactive Publication Date: 2013-12-11
中国人民解放军72719部队
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a simple and easy method for testing the bonding coefficient, solve the problem of difficult testing of the bonding coefficient of the cement concrete double-layer pavement, and provide an accurate bonding coefficient for the structural design of the double-layer pavement

Method used

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  • Testing method for cement concrete double-layered road surface bonding coefficient
  • Testing method for cement concrete double-layered road surface bonding coefficient
  • Testing method for cement concrete double-layered road surface bonding coefficient

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] In this example, no sandwich material is used to test the strain values ​​of the upper beam 1 and the lower beam 2 under load, and the calculation formula of the binding coefficient K is used to solve the K value. The values ​​are listed in Table 1.

Embodiment 2

[0055] In this example, the film thickness is 0.2mm and the weight is 300g / m 2 As the sandwich material, the effect of the deflection value and strain value of the upper beam 1 and the lower beam 2 was tested, and the K value was solved by the calculation formula of the binding coefficient K. The values ​​are listed in Table 1.

Embodiment 3

[0057] In this example, a plastic film with a thickness of 0.4mm is used as the sandwich material to test the influence of the deflection value and strain value of the upper beam 1 and the lower beam 2, and use the calculation formula of the coupling coefficient K to solve the K value. The values ​​are listed in the table 1 in.

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Abstract

The invention discloses a testing method for a cement concrete double-layered road surface bonding coefficient. The method comprises the following steps: prefabricating an upper beam 1 and an underbeam 2 of a cement concrete test piece with the size of 105*150*450 mm, and invertedly buckling the two together; putting a sandwich material 3 between the two; applying a 3.5 t force on the upper beam 1; testing the strain condition of the upper beam 1 and the underbeam 2; calculating out the bonding coefficient value according to a calculation formula of the coefficient K. According to the method, the small test piece with the size of 105*150*450 mm is adopted to simulate the double-layered road surface for bonding coefficient testing, the problem that a sufficient road surface is required for the testing in a current method is solved, the testing difficulty is reduced, and the purpose of quick, real-time and high-efficiency testing for the double-layered road surface bonding coefficient is realized, and therefore the method has a wide popularization significance.

Description

Technical field [0001] The invention relates to a testing method, in particular to a testing method for the binding coefficient of airport concrete double-layer pavement, and belongs to the technical field of airport and road engineering. Background technique [0002] After the long-term effects of aircraft load and natural factors, the airport runway has different degrees of damage. Some airport pavements are seriously damaged and their carrying capacity is reduced, which can no longer meet the requirements of use. Although some airport pavements have not long service life, due to The increasing heaviness of aircraft and the rapid increase in traffic have also caused the existing pavement to fail to meet the requirements for use. Although some airport pavements are not broken, the quality of use is too poor, affecting flight safety and comfort. In order to improve the existing The bearing capacity of the airport pavement and the improvement of the use quality of the pavement req...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N19/00
Inventor 陆春奇崔树业翁兴中王方岩刘兵张伟颜祥程蒋政赵兴杰马文轩
Owner 中国人民解放军72719部队
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