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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: 2013-04-03
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 to cause early damage to the pavement
[0005] To sum up, there is no simple, fast, safe and real-time monitoring method for detecting the compactness of rubber asphalt

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

Embodiment 1

[0028] When the present invention is put into production, carry out according to the following steps:

[0029] 1) Calibration of non-nuclear density meter;

[0030] a) After paving each surface layer of the rubber asphalt pavement test road and passing the inspection, select 5 points evenly and mark them;

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

[0032] c) Immediately after step b) is completed, core samples are drilled at the corresponding positions and marked, and the marks correspond to the test data numbers of the non-nuclear density instrument;

[0033] d) For the core samples drilled in step c), measure the bulk density of each core sample in the room using the surface dry method;

[0034] e) Take step b) the density measured by the non-nuclear density meter as the abscissa, and step d) the surface-dry method ...

Embodiment 2

[0040] In the rubber asphalt pavement test section of Guangdong Xingyu Expressway, when the present invention was put into the test, the following steps were carried out:

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

[0042] a) After paving each surface layer of the rubber asphalt pavement test road and passing the inspection, select 5 points evenly and mark them;

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

[0044] c) Immediately after step b) is completed, core samples are drilled at the corresponding positions and marked, and the marks correspond to the test data numbers of the PQI non-nuclear density instrument;

[0045] d) For the core samples drilled in step c), measure the bulk density of each core sample in the room using the surface dry method;

[0046] e) Take step b) the measured density of t...

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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] In the construction process 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 perfor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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