Cement concrete pavement cavity drop hammer type Benkelman beams deflectometer comprehensive detection method

A drop weight deflection meter and cavity drop weight technology, which is applied in the field of comprehensive detection of cement concrete pavement cavity drop weight deflection meter, can solve the problems of lack of detection methods for cement concrete pavement voids, and achieve the effect of convenient operation

Inactive Publication Date: 2018-11-23
四川正达检测技术有限责任公司
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Problems solved by technology

[0003] In the process of detecting cement concrete pavement parameters, there is a lack of a method for detecting voids in cement concrete pavement, so we propose a comprehensive detection method for cement concrete pavement voids

Method used

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  • Cement concrete pavement cavity drop hammer type Benkelman beams deflectometer comprehensive detection method
  • Cement concrete pavement cavity drop hammer type Benkelman beams deflectometer comprehensive detection method

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Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0028] see Figure 1-2 , a kind of cement concrete pavement cavity dropping weight deflection meter comprehensive detection method, comprises the following steps:

[0029] S1: Preparatory work, including:

[0030] 1) Adjustment: adjust the mass and drop height of the heavy hammer, and the heavy hammer will impact and generate four-level load;

[0031] 2) Arrangement of measuring points: Arrange measuring points on the surface of each slab corner of cement concrete in the test section, and take the position of the measuring point so that the bearing plate is close to the position of the slab corner;

[0032] 3) Inspe...

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Abstract

The invention discloses a cement concrete pavement cavity drop hammer type Benkelman beams deflectometer comprehensive detection method. The method comprises the following steps that S1, preparation work is done, in specific, a Benkelman beams deflectometer is conditioned, detected, aligned and turned on; S2, testing is conducted, a bearing board falls down, a drop hammer device is started, a sensor and the bearing board are lifted up, calculation is conducted, heavy hammers with different levels of mass of the drop hammer type Benkelman beams deflectometer fall the certain height to generateimpact load, instant deformation occurs on the pavement surface, and the dynamic deflection and deflection basin generated under the dynamic load effect are tested. The dynamic modulus of elasticity of each layer of the pavement is calculated inversely, and serves as the void determination parameters of the cement concrete pavement, when any one of the intercept, the single-point deflection and the deflection different does not meet the requirement, it is deemed that voids exist beneath a board block, and the device is convenient to operate and suitable for being widely popularized.

Description

technical field [0001] The invention relates to the technical field of cement concrete pavement, in particular to a comprehensive detection method of a cement concrete pavement cavity dropping weight deflection meter. Background technique [0002] Cement concrete pavement refers to the pavement with cement concrete as the main material, referred to as concrete pavement. Also known as rigid pavement, commonly known as white pavement, it is a high-grade pavement. Cement concrete pavements include plain concrete, reinforced concrete, continuously reinforced concrete, prestressed concrete and other pavements. [0003] In the process of detecting cement concrete pavement parameters, there is a lack of a method for detecting voids in cement concrete pavements. Therefore, we propose a comprehensive detection method for cement concrete pavement voids using drop weight deflection instruments. Contents of the invention [0004] The purpose of the present invention is to provide a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C23/01
CPCE01C23/01
Inventor 倪维
Owner 四川正达检测技术有限责任公司
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