Multifunctional water-permeable structure pavement

A multi-functional, top-surface technology, applied in the direction of condensable pavement, roads, roads, etc. paved on site, can solve the problems of unsatisfactory water purification effect, low photocatalytic efficiency, limited range, etc., and achieve increased absorption of visible light. The effect of improving the photocatalytic efficiency and easy availability of raw materials

Inactive Publication Date: 2018-10-02
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The titanium dioxide coating can absorb visible light in a limited range, and the direct contact time of automobile exhaust with it is short, so the photocatalytic efficiency is not high. For the pavement structure with a separate filter layer, the cost is high, and the water purification effect is not ideal.

Method used

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  • Multifunctional water-permeable structure pavement
  • Multifunctional water-permeable structure pavement
  • Multifunctional water-permeable structure pavement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Base layer 5 is a permeable concrete layer with 200-mesh activated carbon as water purification material, and the dosage is 1% of the concrete mass; the particle size of coarse aggregate (single-size graded crushed stone) is 16-19mm, and the dosage is 1600kg / m 3 ; Ordinary Portland cement 42.5 for concrete, the dosage is 375kg / m 3 , the water-cement ratio is 0.28; the reinforcing agent is 1% of the concrete mass.

[0049] The modified asphalt is made of RE-G40 high-viscosity asphalt modifier and SBS asphalt at a mass ratio of 8:92, and the dynamic viscosity at 60°C is 13000Pa.s.

[0050] Mixed asphalt concrete A layer 3: the asphalt ratio of modified asphalt and stone material A is preferably 4.8%, the mass proportion of polyester fiber is 2%, the porosity of the surface layer is 18%, and the gradation of mineral material A is shown in the table below 1:

[0051]

[0052]

[0053] Table 1

[0054] Mixed asphalt concrete B layer 4: the ratio of modified asphalt ...

Embodiment 2

[0061] The base layer 5 uses 100-mesh activated carbon as the permeable concrete layer of the water purification material, and the dosage is 3% of the concrete mass; the particle size of the coarse aggregate (single-size graded crushed stone) is 16-19mm, and the dosage is 1600kg / m 3 ; Ordinary Portland cement 42.5 for concrete, the dosage is 375kg / m 3 , the water-cement ratio is 0.32; the reinforcing agent is 3% of the concrete mass.

[0062] All the other components and their contents are the same as in Example 1.

[0063] After testing, the water permeability coefficient of the structured pavement of Example 2 is 31ml / s.

[0064] The water permeability coefficient represents the water permeability of the pavement structure. It can be seen that the water permeability coefficients of Examples 1 and 2 are both greater than 600mL / min, and the results show that the water permeability is excellent and the water permeability effect is obvious.

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Abstract

The invention discloses a multifunctional water-permeable structure pavement. The multifunctional water-permeable structure pavement comprises a mixed asphalt concrete layer B covering the top surfaceof a base layer, and a mixed asphalt concrete layer A at the top. The mixed asphalt concrete layer A is made of aggregated rock A, polyester fibers and modified asphalt, and the mixed bituminous concrete layer B is made of aggregated rock B, polyester fibers and modified asphalt. The modified asphalt is formed by matching of SBS asphalt and a modifier. The porosity of the mixed asphalt concrete layer A is less than that of the mixed asphalt concrete layer B. The base layer is a concrete layer comprising coarse aggregate and further comprising a certain mass percentage of a reinforcing agent and a water-purifying material. The multifunctional water-permeable structure pavement is simple in structure and low in raw material cost, various functions are mutually promoted through the multi-layer structure, the water-permeable, filtering and tail gas absorbing effects of the pavement structure can be fully exerted, and the multifunctional water-permeable structure pavement has great significance to construction and sustainable development of sponge cities; and rainwater is further filtered and dredged, car tail gas is decomposed through photocatalysis, city water resources are fully utilized, the city environment is improved, and high practicability and wide applicability are achieved.

Description

technical field [0001] The invention relates to a structural pavement, in particular to a multifunctional permeable structural pavement. Background technique [0002] Since entering the 21st century, with the continuous acceleration of urbanization in our country, the irrationality of urban infrastructure construction has become increasingly prominent. The dense pavement in the city hinders the runoff path of rainwater, resulting in uncoordinated urban water circulation and a sharp drop in groundwater. The temperature of the road surface will continue to rise in summer, and the temperature cannot be adjusted through the evaporation of groundwater, which will make the urban heat island effect more significant. Excessively high temperatures will also accelerate the occurrence of road surface rutting, hugging, and passing diseases. [0003] In addition, in the face of heavy rainfall, the drainage capacity of the urban drainage system is not enough to quickly remove a large amo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C7/00E01C11/22C04B26/26
CPCC04B26/26C04B2111/0075E01C7/00E01C11/226C04B16/0683C04B14/02
Inventor 李宁于新黄国兴马骏飞朱章盛
Owner HOHAI UNIV
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