Water-draining inosculation material for water-permeable asphalt concrete surface and preparation method thereof

Abstract

The invention discloses a water-draining inosculation material for a water-permeable asphalt concrete surface and a preparation method thereof. The water-draining inosculation material consists of a single-graded fine-grained gravel framework, modified asphalt mortar and a tackifier, and the weight ratio of the single-graded fine-grained gravel to the modified asphalt mortar to the tackifier is 100: (32-51):(20-50). A matrix asphalt sol-gel system is controlled by using high-content rubber powder, SBS (Styrene-Butadiene-Styrene), viscosity adjusting component, plasticizing component and cross-linking component; the components are uniformly distributed in the matrix asphalt through high-temperature and high-speed shearing; the SBS molecular chain and the rubber powder form a composite spatial elastic network structure through the cross-linking component, and the addition of the plasticizing component weakens the intermolecular force inside the spatial elastic network structure so that the asphalt colloid has high rigidity and high viscoelasticity; the contradiction between the thickness and viscoelasticity of an asphalt film wrapped on a stone surface is overcome.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a water-filtering insert for the surface of permeable asphalt concrete and a preparation method thereof. Background technique [0002] As soon as the concept of sponge city was proposed, it has attracted the attention of urban construction and researchers. Among the many permeable pavement materials, permeable asphalt concrete has outstanding advantages such as high anti-skid performance, low noise, suppressing water mist, preventing water drift, and reducing glare. The construction of sponge city. [0003] Permeable asphalt concrete generally refers to a new type of asphalt concrete with an internal void ratio of about 20% after compaction, which can form drainage channels inside the mixture. Due to the interconnected voids inside the material, the upper rainwater can penetrate into the material and pass through the material or The lower drainage structure discha...

AI Technical Summary

Problems solved by technology

However, there are many problems in the current use of permeable asphalt concrete: ① When the upper rainwater contains soil, dust residue, debris and other debris, these fine particles will penetrate into the pavement layer with the rainwater and form small particles inside the pavement layer. The clogging of the voids leads to the destruction of the connected structure of the internal voids of the pavement layer, and the loss of the water permeability function of the pavement layer; In the open gaps, it is difficult to clean these debris by conventional means, which also causes the water permeability function of the pavement to be reduced or even completely lost; Only part of the pavement that has lost its permeable function can be milled and resurfaced, resulting in a lot of waste of manpower and material resources, and it is difficult to form a good connection between the repaired permeable asphalt material and the original permeable asphalt road, which limits the pavement of permeable asphalt pavement permeable function

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