Sustainable hybrid pervious concrete pavement structure

Abstract

The invention relates to a sustainable hybrid pervious concrete pavement structure. The pavement structure comprises a surface layer, a middle layer and a bottom layer from top to bottom; the surface layer and the middle layer are paved by use of pervious concrete different in perviousness coefficient, while the bottom layer is a hardcore bed, and the perviousness coefficients and the porosities gradually increase from the surface layer to the bottom layer; the pervious concrete of the surface layer is composed of the following components in kilograms per cubic meter (kg / m<3>): 300-400kg / m<3> of cement, 1400-1600 kg / m<3> of 5mm-10mm gravel, 2.2-3.25 kg / m<3> of additives and 85-100 kg / m<3> of mixing water; the pervious concrete of the middle layer is composed of the following components in kilometers per cubic meter (kg / m<3>): 280-380kg / m<3> of cement, 1350-1560 kg / m<3> of 10mm-20mm gravel, 2.0-3.0 kg / m<3> of additives and 75-90 kg / m<3> of mixing water. The sustainable hybrid pervious concrete pavement structure is a machined rolled pervious concrete pavement structure; a pyramid perviousness manner is adopted so that the perviousness of the pavement structure is excellent; water holes are not prone to be covered and blocked by dust, and therefore, the service life of the pervious concrete pavement structure is greatly increased.

Description

technical field [0001] The invention relates to concrete, in particular to a sustainable hybrid machine-pressed permeable concrete pavement structure. Background technique [0002] With the development of economy and the process of urbanization, the surface of modern cities is gradually covered by reinforced concrete buildings and impermeable roads. But these impermeable roads have brought many negative impacts to the ecological environment of the city. Concrete pavements lack the ability to breathe, absorb heat, and infiltrate rainwater compared to natural soil. A series of environmental problems ensued: the rainwater that can infiltrate the surface decreased significantly, and the underground water table in the city dropped sharply; A large amount of rainwater cannot penetrate into the ground in time, which may easily cause social problems such as flooded roads and traffic paralysis. [0003] As a new environmentally friendly and ecological road material, permea...

AI Technical Summary

Problems solved by technology

A series of environmental problems ensued: the rainwater that can infiltrate the surface decreased significantly, and the underground water table in the city dropped sharply; A large amount of rainwater cannot penetrate into the ground in time, which may easily cause social problems such as flooded roads and traffic paralysis

Due to the low compressive strength of permeable concrete, coupled with people's understanding, foundation conditions, construction methods and other reasons, the permeable concrete is produced by the usual method, and its strength usually does not exceed 20 MPa under the condition of ensuring a certain water permeability, which is serious Affected the scope of application of permeable concrete

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