Rubber asphalt compacting technology based on pavement quality indicator

A non-nuclear density meter and rubber asphalt technology, which is applied in the field of non-destructive testing, can solve the problems of rubber asphalt pavement compaction not meeting the design requirements, early damage to the pavement, and unguaranteed construction quality, so as to avoid insufficient compaction or excessive rolling, low detection cost, and the effect of saving construction machinery shifts

Inactive Publication Date: 2012-02-08
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As a result, the compactness of the rubber asphalt pavement does not meet the design requirements, the construction quality cannot be guaranteed, and it is likely t

Method used

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  • Rubber asphalt compacting technology based on pavement quality indicator
  • Rubber asphalt compacting technology based on pavement quality indicator
  • Rubber asphalt compacting technology based on pavement quality indicator

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0027] Example 1

[0028] When the present invention is put into production, proceed as follows:

[0029] 1) Calibration of nuclear density meter;

[0030] a) After the paving of each surface layer of the rubber asphalt pavement test road is completed, and after the inspection is passed, 5 points are evenly selected and marked;

[0031] b) Start the non-nuclear density meter, set the representative value of the rubber asphalt surface layer thickness to be detected, and measure the density at the marked point in step a);

[0032] c) After step b) is completed, immediately drill the core sample at the corresponding position and make a mark, which corresponds to the number of the detection data of the nuclear density meter;

[0033] d) For the core sample drilled in step c), the gross bulk density of each core sample is measured by the surface dry method indoors;

[0034] e) Using step b) the measured density of the non-nuclear densitometer as the abscissa, and the step d) the measured gross...

Example Embodiment

[0039] Example 2

[0040] In the rubber asphalt pavement test section of Guangdong Xingshe Expressway, when the present invention is put into the test, the following steps are performed:

[0041] 1) Calibration of PQI non-nuclear density meter;

[0042] a) After the paving of each surface layer of the rubber asphalt pavement test road is completed, and after the inspection is passed, 5 points are evenly selected and marked;

[0043] b) Start the PQI non-nuclear density meter, set the representative value of the rubber asphalt surface layer thickness to be detected, and measure the density at the marked point in step a);

[0044] c) After step b) is completed, immediately drill the core sample at the corresponding position and make a mark, which corresponds to the PQI non-nuclear densitometer test data number;

[0045] d) For the core sample drilled in step c), the gross bulk density of each core sample is measured by the surface dry method indoors;

[0046] e) Using step b) the measured d...

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Abstract

The invention belongs to the field of non-destructive testing, and discloses a rubber asphalt compacting technology based on a pavement quality indicator. According to the invention, density data is collected from a rubber asphalt pavement testing path; a relationship figure of the two is drawn; read numbers on the pavement quality indicator are scaled; and real-time monitoring and compaction optimization are carried out upon the compaction degree of the asphalt layer of the rubber asphalt pavement by using the pavement quality indicator. With the technology provided by the invention, the asphalt structural layer of the rubber asphalt pavement is not damaged, the compaction degree of a rubber asphalt surface layer can be simply, rapidly and accurately controlled, and the rolling process of a roller can be optimized. The technology can be simply applied in on-site operations, and provides advantages of no radiation, no damage, and low testing cost.

Description

technical field [0001] The invention relates to a rubber asphalt compaction process, in particular to a rubber asphalt compaction process based on a non-nuclear density meter, which belongs to the field of non-destructive testing. Background technique [0002] During the construction of rubber asphalt pavement, the compactness of rubber asphalt concrete surface is an important control index. It is particularly important to quickly and accurately detect the degree of compaction to ensure the construction progress and reflect the construction quality in time. At present, there are mainly surface dry method, wax sealing method, water weight method and nuclear density meter method to measure the compactness of asphalt pavement. However, traditional measurement methods such as surface drying method, wax sealing method, and water weight method require core drilling, which will cause different degrees of damage to the road surface; although the nuclear density meter can perform no...

Claims

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Application Information

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IPC IPC(8): E01C23/01G01N9/00
Inventor 杨国良吴旷怀周煌周岭李燕枫包秀宁张宏武李军黄博彦
Owner GUANGZHOU UNIVERSITY
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