A kind of sponge city permeable cement concrete pavement and its manufacturing process

Abstract

The invention discloses a sponge city permeable cement concrete pavement. The pavement comprises a permeable concrete structure layer and a permeable cement concrete surface layer. The raw materials of the permeable cement concrete surface layer are: cement, river sand, expanded perlite, silicon powder, Composite early strength activator, diene-based rubber gel with a hydroxyl glass transition temperature of -40-0°C, acrylic acid-acrylate-sulfonate copolymer, water reducing agent, dispersant, water, the permeable concrete structure The raw materials of the layer are: magnesium powder modified asphalt, hydrophilic epoxy resin, steel slag, redispersible emulsion, plant fiber, melon seed slices, water reducer, surfactant, and water. The invention also discloses a manufacturing method of the permeable cement concrete pavement. The cement concrete pavement has good water permeability, high compressive strength and flexural strength, good wear resistance and excellent skid resistance.

Description

Technical field: [0001] The invention relates to the technical field of building materials, in particular to a sponge city permeable cement concrete pavement. Background technique: [0002] With the development of our country's economy, the expansion of urban scale and the change of structure, the urban surface is gradually covered by reinforced concrete houses, large-scale infrastructure, various impermeable sites and concrete pavement with poor water permeability. Among them, the proportion of concrete pavement is increasing, which has many negative impacts on the society and the ecological environment, especially the urban waterlogging, the decline of groundwater level, and the heat island effect. As one of the Low Impact Development (LID) measures, permeable concrete paving can achieve the purpose of replenishing groundwater resources with rainwater; reducing road runoff, preventing urban waterlogging; reducing pollutants carried by road runoff, and reducing river water ...

AI Technical Summary

Problems solved by technology

[0004] However, the honeycomb structure of permeable concrete makes its compressive and flexural properties poor; the surface porosity of permeable concrete is large, and it is easily eroded by air, sunlight and water, and its porosity is large, easy to be blocked by particles, and the maintenance cost is high.