Method and device for continuously detecting compactness of asphalt concrete pavement

A technology of asphalt concrete and detection methods, applied in the direction of material inspection products, etc., can solve the problems of high construction complexity, achieve the effect of convenient system construction, low system construction cost, and project quality assurance

Inactive Publication Date: 2014-06-11
CHONGQING JIAOTONG UNIVERSITY
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Problems solved by technology

In the 1970s, Japan used the method of measuring the vertical amplitude of vibration acceleration to determine the degree of compaction, that is, the accelerometer was pre-buried under the rolling layer before unloading. device to measure the acceleration value of the embedded sensor, and estimate the compaction quality according to the measured acceleration value, but in this method, the accelerometer can only be used once, and the construction complexity is relatively high
However, few previous detection methods

Method used

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  • Method and device for continuously detecting compactness of asphalt concrete pavement
  • Method and device for continuously detecting compactness of asphalt concrete pavement
  • Method and device for continuously detecting compactness of asphalt concrete pavement

Examples

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Embodiment

[0072]Take the construction of a highway project in Jiangxi Province as an example. The compaction operation of AC-25 (gradation A) under a certain road surface mainly adopts two kinds of compaction machines, Hummer HD130 vibratory roller and Sany SPR300 tire roller. The HD130 road roller is a vibratory roller with double drums. During the operation, the front wheel mainly vibrates. The amplitude is 0.75mm, the vibration frequency is 42HZ, and the driving speed is roughly controlled at about 5km / h. The construction process of the compaction operation is a double-steel-wheel vibratory roller for static pressure once, followed by a double-steel-wheel vibratory roller for front wheel vibration compaction 2 to 4 times, and then two rubber-tired rollers for 1-2 times , the final double-drum roller static pressure until the road surface is flat and free of wheel marks.

[0073] Through data processing, each 0.4 second is a detection unit, and an effective acceleration value A is ob...

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Abstract

The invention relates to a method and a device for continuously detecting the compactness of an asphalt concrete pavement. According to the invention, continuous detection and real-time processing is carried out on pavement temperature and the vibration frequency of a road roller through a special device and dynamically, efficiently and accurately reflect the processing effect of the road roller on a pavement. The method and the device which are disclosed by the invention can be used for continuously detecting the compactness of the pavement in real time in a construction process, is high in timeliness, ensures the engineering quality by conveniently discovering problems in time and has the advantages of good compatibility and low system building cost without special demand on a hardware condition.

Description

technical field [0001] The invention relates to a compaction degree detection technology, in particular to a method and device for continuously detecting the compaction degree of asphalt concrete pavement. Background technique [0002] Compaction is the last process of asphalt pavement forming, and it is a key link that affects the quality and life of asphalt pavement. At present, in the practice of asphalt pavement compaction in our country, due to the lack of systematic and perfect construction technology guidelines, the quality of the compacted pavement is often unsatisfactory due to improper handling, unreasonable compaction schemes, and poor compaction technology. , the phenomenon of "repair this year, break down next year, and build roads every year" has caused a lot of economic waste and bad social impact; It is of great practical significance to study quality control technology and formulate relevant technical guidelines. [0003] Over the years, many foreign manuf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/42
Inventor 曹源文梁乃兴马丽英归少雄魏亚周庆丰潘宇王荣
Owner CHONGQING JIAOTONG UNIVERSITY
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