Pavement structure depth detection device

Abstract

The invention relates to a pavement structure depth detection device. Detection cylinder, the detection barrel comprises a barrel body, a rigid barrel cover arranged at the top of the barrel body andan inner side elastic film arranged at the barrel bottom; cylinder body vertical arrangement, an outer side elastic film is arranged at the periphery of the inner side elastic film; a measuring cavityis defined by the inner side elastic film, the barrel body and the barrel cover; the pavement structure depth detection device further comprises a liquid injection device used for pumping pressure liquid into the measurement cavity and a metering structure used for metering the volume of the liquid pumped into the measurement cavity, and further comprises an annular pressing block which can moveup and down relative to the cylinder and is used for applying pressure to the outer side elastic film. According to the invention, the problem of inaccurate structure depth detection easily caused bythe fact that the area of a measuring point cannot completely cover a pit in the prior art is solved.

Description

technical field [0001] The invention relates to a road surface structure depth detection device in the field of road surface structure depth detection. Background technique [0002] The structure depth of pavement surface, also known as texture depth, is an important indicator of pavement roughness. It refers to the average depth of the uneven opening pores on a certain area of ​​road surface. slippery. [0003] The traditional measurement method is to spread a known volume of sand on the measuring point of the road surface to be tested, measure the area covered by the pavement, and the ratio of the volume of sand to the average area covered is the structural depth. In my country, the anti-skid structure depth TD of the water concrete pavement of the first-class highway in China is not less than 0.7mm and not greater than 1.1mm; the structure depth of the asphalt concrete pavement is generally not less than 0.50mm. There are following problems in the existing method of mea...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a road surface structure depth detection device to solve the problem of inaccurate structure depth detection easily caused by the fact that the measuring point area cannot completely cover the pits in the prior art

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