Process for preparing water-permeable material for landscaping pavement

Abstract

The invention discloses a process for preparing a water-permeable material for a landscaping pavement. The water-permeable material comprises a rubber layer, a water-permeable layer, a mortar layer and a matrix layer, wherein the matrix layer is formed by compression molding after uniformly stirring and mixing cement, solid waste coarse aggregate and solid waste fine aggregate; the water-permeablelayer is formed by compression molding after uniformly mixing cement, solid waste coarse aggregate and reinforcing fibers; the rubber layer is formed by mixing natural rubber, styrene butadiene rubber, white carbon black, silicon carbide, absorbent resin, a vulcanizing agent, an active agent and an ecological additive, casting the mixture on the water-permeable layer and carrying out vulcanizing;the coarse aggregate is formed by carrying out water quenching on high-temperature slag to form porous slag with a large internal pore diameter and then crushing the porous slag; the fine aggregate is formed by naturally cooling the high-temperature slag to form dense slag with a small internal pore diameter, and then grinding the dense slag into fine powder to be sintered into dense particles; and both coarse and fine aggregates are put into modification liquid for surface hydrophobic modification. The process provided by the invention uses solid wastes to prepare the water-permeable material which can be widely applied to water-permeable layers of pavements of sidewalks, parks and the like, and is beneficial to groundwater circulation.

Description

technical field [0001] The invention relates to the field of landscaping, in particular to a process for preparing water-permeable materials for landscaping road surfaces. Background technique [0002] At present, the places where urban residents live are mainly surrounded by urban squares, commercial streets, sidewalks, community activity places, parking lots, etc., which are paved with impermeable materials such as granite, marble, glazed tiles, cement and asphalt. The urban environment is very harmful. When it rains, the hardened ground completely prevents rainwater from penetrating directly into the ground, and the accumulated water makes people's travel very inconvenient. When it does not rain, the hardened ground is extremely dry and easy to accumulate dust. , causing dust to fly everywhere, it is difficult to exchange heat and moisture between the ground and the air, and the ability to adjust the temperature and humidity of the urban surface is also reduced. The heat...

AI Technical Summary

Problems solved by technology

[0002] At present, the places where urban residents live are mainly surrounded by urban squares, commercial streets, sidewalks, community activity places, parking lots, etc., which are paved with impermeable materials such as granite, marble, glazed tiles, cement and asphalt. The urban environment is very harmful. When it rains, the hardened ground completely prevents rainwater from penetrating directly into the ground, and the accumulated water makes people's travel very inconvenient. When it does not rain, the hardened ground is extremely dry and easy to accumulate dust. , causing dust to fly everywhere, it is difficult to exchange heat and moisture between the ground and the air, and the ability to adjust the temperature and humidity of the urban surface is also reduced. The heat island effect of the city is reduced, and the environmental comfort of the city is greatly reduced.

[0003] At present, some permeable materials such as permeable bricks and permeable pavements in the field of building materials on the market are mainly composed of large-grained skeletons and cement, or artificially processed sand and polymer binders. The problem is that the permeable rate of cement permeable bricks is not high. Or the compressive strength is insufficient, and it is difficult to balance the performance of these two aspects. At the same time, the exploitation of raw materials causes damage to the environment; About 180Kg of steel slag will be discharged, and the discharge of ferrochrome slag is increasing at a rate of more than 400,000 tons per year. If not comprehensively utilized, these solid wastes will silt up rivers, fill waterways, occupy land, pollute water sources and air, causing Environmental hazards; in view of the porous structure of these solid wastes, but also a certain strength, solid wastes can be used to make permeable materials, which can not only reduce the discharge of solid wastes, but also utilize resources to achieve a win-win goal

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