Lightweight high-density pavement performance detection method
A technology of pavement performance and detection method, which is applied in the direction of strength characteristics, the use of one-time impact test material strength, measuring devices, etc., can solve the problems of missing bad points, road pavement damage, inaccurate detection results, etc., and achieve convenient and fast testing Effect
Pending Publication Date: 2021-05-25
CHANGAN UNIV +1
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[0003] At this stage, the conventional method for testing the structural strength and permeability of the pavement surface is usually the drilling sampling test method, which uses a drilling machine to drill holes in the pavement to sample, and conduct laboratory tests on the sampled samples, and the sampling is prone to omission of bad points , Inaccurate detection results, etc., require more manual assistance operations, cause damage to the road surface, and cannot be directly detected on the road surface surface
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[0046] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. A preferred embodiment of the application is shown in the drawings. However, the present application can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this application more thorough and comprehensive.
[0047] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0048] see Figure 1-Figure 6 As shown, a lightweight and high-density pavement performance testing method includes the following steps:
[0049] Step A, installing the road surface detector 1 in the area to be detected, wherein the road surface detector 1 includes:
[0050] The lower pressure bracket 11, the ...
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The invention discloses a lightweight high-density road surface performance detection method. The method comprises the steps: installing a road surface detector in a to-be-detected area, starting a telescopic device of the road surface detector, driving a knocking hammer to knock a to-be-detected road surface, acquiring and recording a knocking sound frequency by an audio collector, according to the received knocking sound frequency, starting a pressurizing pump to inject quantitative water into a pressurizing cylinder, reading and metering road surface water seepage time, and calculating a road surface water seepage coefficient; starting a high-pressure air pump to inflate pressure gas into the pressurizing cylinder, observing and detecting whether water leaks from the road surface or not within a time interval, recording the pressure of the pressure gas when water leaks, and judging whether the water seepage performance of the road surface is qualified or not; and judging whether the road surface compactness, the structural strength, the road surface water permeability coefficient and the road surface water permeability performance are qualified or not by testing the knocking frequency, the pressurized water permeability test and the pressurized gas permeability test. The road is not damaged in the test, and the test is convenient and rapid.
Description
technical field [0001] The invention relates to the technical field of highway engineering, in particular to a lightweight and high-density pavement performance detection method. Background technique [0002] With the rapid development of road construction, the pavement range is more and more extensive, and the pavement surface structure is the main factor affecting the realization of pavement functionality, which directly affects the safety and comfort of driving. Ideally, the pavement surface structure should be evenly distributed And provide sufficient anti-skid ability, especially for lightweight and high-density pavement, it is necessary to ensure not only structural strength, but also compactness and water seepage performance; however, in actual engineering construction, it is affected by pavement materials, construction machinery, surrounding environment, etc. It is unavoidable that there will be uneven distribution of pavement surface structure, insufficient structur...
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Patent Timeline
Login to View More IPC IPC(8): G01N29/12G01N29/04G01N3/30G01N15/08
CPCG01N29/12G01N29/045G01N3/30G01N15/082G01N15/0826G01N2291/023G01N2291/02818G01N2203/0007G01N2203/001
Inventor 刘洪辉张洪伟王学营高源杨心怡李扬惠冰
Owner CHANGAN UNIV