Measuring method for resonance frequency of operation of paver
A technology of resonance frequency and determination method, which is applied in the measurement of resonance frequency, measurement device, measurement of ultrasonic/sonic/infrasonic waves, etc., can solve the problems of poor pavement quality, low density of paving layer, and large differences in asphalt composition, and achieves The effect of improving road quality
Inactive Publication Date: 2015-09-02
CHANGAN UNIV
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Problems solved by technology
[0005] During the construction of existing asphalt roads, due to the large difference in asphalt components, the resonance frequency of the asphalt mixture cannot be determined, and then when the asphalt mixture is paved, the density of the paved layer is low, and the road surface under construction poor quality
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Embodiment 1
[0053] The invention provides a method for measuring the operating resonance frequency of a paver, characterized in that the method for measuring the operating resonance frequency of the paver is as follows: figure 1 shown, including:
[0054] 101. Determine the experimental road surface with the same composition as the asphalt mixture used in the construction road surface, extract the first quantity of sample materials, obtain the first compactness of the sample materials under the detection of the non-nuclear density meter and the test results of the sample materials in the laboratory The second compaction degree detected in the method, obtain a net difference value according to the first compactness degree and the second compaction degree, and calibrate the non-nuclear density meter according to the net difference value.
[0055] 102. Use the vibration frequency monitor to obtain the actual vibration frequency of the paver, and draw the vibration frequency curve.
[0056] ...
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Abstract
The invention discloses a measuring method for the resonance frequency of the operation of a paver, and belongs to the field of road construction. The measuring method includes obtaining the compactness of a sample, calibrating a non-nuclear density gauge via the compactness, determining the corresponding relation between the actual vibration frequency of the paver and the displayed vibration frequency, enabling the paver to operate with various vibration frequencies, obtaining the actual paving compactness corresponding to each vibration frequency, finally selecting the maximum of the actual paving compactness, determining the vibration frequency with the combination of the corresponding relation, and regarding the vibration frequency as the resonance frequency of the operation of the paver. By the above method, during the road compacting operation of the paver, operation is performed according to the vibration frequency, bituminous mixture of the pavement can reach the maximum compactness, and the pavement quality of the road can be improved.
Description
technical field [0001] The invention belongs to the field of road construction, in particular to a method for measuring the operating resonance frequency of a paver. Background technique [0002] During the construction of asphalt pavement, the paving density of the paver is one of the important factors affecting the quality of the asphalt pavement. Research data and engineering practice have shown that the higher the initial compaction of the paving layer, the better the pavement construction quality . In order to improve the compactness of paving, an exciter is installed in the screed box of the paver, and the dynamic load of the exciter drives the screed to vibrate to compact the pressed material. [0003] The resonance theory holds that: when the paving operation causes the mechanical-material system to resonate, the amplitude of the particles of the material to be pressed will increase significantly, the internal friction resistance between the particles will decrease,...
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Login to View More IPC IPC(8): G01H13/00E01C19/12
Inventor 刘洪海张勇汪学斌张丙录张志耕陈疆韩久剑徐中新
Owner CHANGAN UNIV