Portable permeability coefficient testing device of permeable concrete pavement and testing method of device

Abstract

The invention discloses a portable permeability coefficient testing device of permeable concrete pavement and a testing method of the device, and belongs to the field of penetrating quality testing ofporous materials. The portable permeability coefficient testing device of the permeable concrete pavement utilizes a servo motor driving an injection piston cylinder to carry out water injection to simulate penetration process, penetration flow at a certain time can be converted according to a water injection rotating speed of the servo motor, and permeability pressure is detected by using a pressure sensor. According to the portable permeability coefficient testing device of the permeable concrete pavement and the testing method of the device, various data acquisition is more accurate and convenient in the testing process of permeability coefficients, and the testing precision of the permeability coefficients is improved; the rotating speed of the servo motor is controlled by a controller, and the effluent pressure of the injection piston cylinder can be controlled to meet the penetration test requirements of samples with different blockage degrees; and a large-size overflow cylinderis not needed by the testing device, the structure is simple, the size is small, and the testing device is convenient to carry and can realize a site test of the permeable concrete pavement.

Description

technical field [0001] The invention relates to a testing device and method for permeability coefficient of water-permeable materials, more specifically, to a portable testing device and method for permeability coefficient of permeable concrete pavement. Background technique [0002] With the rapid development of urbanization, the hard surface area increases rapidly, which directly destroys the function of the soil to naturally infiltrate rainwater, and the surface runoff increases during rainfall, causing a series of water, ecological and environmental problems such as obvious urban heat island effect and frequent waterlogging. . In recent years, my country has vigorously promoted the construction of sponge cities, combining natural methods with artificial measures, under the premise of ensuring the safety of urban drainage and waterlogging, to maximize the accumulation, infiltration and purification of rainwater in urban areas, and to promote the utilization of rainwater r...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the existing permeable concrete permeability test scheme, such as the large difference between the test conditions and the real working conditions of the permeable pavement, the complex structure of the test device, and the inconvenience of carrying, and provide a portable permeable concrete pavement permeability test device and The test method adopts the technical scheme of the present invention, uses the servo motor to drive the injection piston cylinder to simulate the penetration process of water injection, and converts the permeation flow rate for a certain period of time according to the water injection speed of the servo motor, and uses the pressure sensor to detect the permeation pressure and permeability coefficient The test data acquisition is more accurate and convenient, which improves the test accuracy of the permeability coefficient; and the test device does not need a large overflow tank, the structure is simple, the volume is small, and it is easy to carry, which can realize the on-site test of the permeable concrete pavement

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