Testing device and method for measuring comprehensive water permeability of porous concrete pavement

Abstract

The invention relates to a testing device and method for measuring the comprehensive water permeability of a porous concrete pavement. The device comprises a water injection pipe, a testing box body, an air pressure sealing assembly and a central computer processor, the water injection pipe is communicated with the top of the test box body; at least two groups of air pressure sealing assemblies are sleeved on the porous concrete sample from top to bottom in a non-contact manner; the porous concrete sample is arranged in the test box body through the air pressure sealing assembly; the porous concrete sample divides the test box body into a top water storage cavity, a side water storage cavity and a bottom water storage cavity from top to bottom; the top water storage cavity is communicated with the water level limiting hole; the side water storage cavity is communicated with a side drainage pipe; the bottom water storage cavity communicates with a bottom drainage pipe; electronic flowmeters are arranged on the side drainage pipes and the bottom drainage pipe; and the central computer processor is respectively connected with the air pressure sealing assembly and the electronic flowmeter. The device and the method have the advantages that tedious sealing operation in a water permeability test process can be avoided, and the accuracy of a test result can be improved.

Description

technical field [0001] The invention belongs to the technical field of pavement performance detection and evaluation, and relates to a test device and method for comprehensive water permeability of pavement, in particular to a test device and method for measuring comprehensive water permeability of porous concrete pavement. Background technique [0002] With the vigorous development of sponge city and green city, porous concrete pavement with good permeability has attracted much attention. Porous concrete pavement has the characteristics of high air permeability, high water permeability, light weight, and structure full of pores. Its application can greatly reduce the pavement water and connect the pavement water with the surface, so that the water can seep down to the surface smoothly. So as to achieve the effect of replenishing groundwater. Water infiltration in the road area can also reduce the impact of road runoff, which is beneficial to driving safety, and can greatly...

AI Technical Summary

Problems solved by technology

Therefore, there is a big difference between the water permeability of the porous pavement structure and the actual working environment by using the surrounding sealing test method. It is difficult to comprehensively and accurately characterize the comprehensive water permeability of porous concrete pavement structure through the test of indicators

[0004] In summary, the traditional water permeability test device can no longer meet the current technical needs, and the existing test methods and evaluation indicators also have certain disadvantages. It is necessary to develop a new type of porous concrete pavement water permeability test device in combination with the actual use environment. The research is reasonable. Reliable sealing measures and operation methods can improve the automation of the water permeability testing device and the accuracy of the test results, improve the scientific rationality of the water permeability performance evaluation, and better serve the pavement water permeability testing and evaluation work

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