Novel device and method for testing permeability coefficient of permeable concrete

Abstract

The invention discloses a novel device and method for testing permeability coefficient of permeable concrete. The novel device comprises a constant-pressure water zone, a permeable zone and a permeated water collecting and data processing zone, wherein the constant-pressure water zone can adjust water pressure difference; the permeable zone is divided into three sections, the lower part is a waterinlet pipe, constant-pressure water flows from the lower part to the upper part, the section is also provided with a drain valve, and when a test piece is replaced, excess water is drained so as to facilitate operation; the middle part is a permeable pipe, and the permeable pipe is divided into two halves which can be detached so as to facilitate the mounting of the test piece; an upper pipe is an overflowing surface, and permeated water flows out through the designed overflowing surface and enters a collecting part; the three parts are connected through flange connection; the permeated watercollecting and data processing zone independently calculates the permeability coefficient mainly through a water temperature and permeable capacity measuring system. Through the novel device and themethod, common problems of most of permeability coefficient measuring instruments can be effectively avoided, test data are accurate, and the test piece is fast to mount and connect; data recording isconvenient, and when a water flow is stable, a test button is pressed and a system automatically tests the permeability coefficient of the test piece and stores a result.

Description

technical field [0001] The invention relates to the technical field of material testing, in particular to a novel testing device and method for water permeability coefficient of permeable concrete. Background technique [0002] In recent years, my country's urbanization level has accelerated, the city's scale and population have continued to expand, urban construction land has increased sharply, and commercial areas, residential quarters, squares, and roads have been constructed on a large scale, resulting in a high degree of urban surface hardening and a sharp increase in the proportion of impermeable areas. , The infiltration of rainwater is reduced, and the surface runoff is increased, which greatly increases the load on the municipal drainage system. Sponge city uses permeable concrete as a pavement material for sidewalks, squares, park paths, and light-loaded roads. It can also be extended to ordinary roads and other relatively heavy-loaded places in the future. Permeab...

AI Technical Summary

Problems solved by technology

But there are also the same shortcomings, such as the sealing problem of the si

Images