Preparation method of photocatalyst functional road material

A technology of road materials and photocatalyst, which is applied in the field of preparation of photocatalyst functional road materials, can solve the problems of small specific surface area, lack of self-cleaning ability, and influence of water permeability of porous materials, so as to increase the specific surface area, expand the application field, and improve water permeability rate effect

Active Publication Date: 2017-05-10
BEIJING JIANYUAN TIANDI ENVIRONMENTAL PROTECTION TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There is a lack of self-cleaning ability around the gap, and the gap is filled with dust over time, and the water permeability is greatly affected. The porosity of the permeable road material makes the road have a certain degree of adsorption, so it has a certain dust and noise reduction function, but the porous material Its specific surface area is still very small, coupled with the influence of floating dust, the adsorption is also reduced.

Method used

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  • Preparation method of photocatalyst functional road material

Examples

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Effect test

Embodiment 1

[0012] Use granite crushed stones with an average particle size of 3.5mm and asphalt as raw materials, mix and heat them to make asphalt concrete permeable material samples with a length of 100mm×width 50mm×thickness 5mm and a porosity of 30% according to the construction requirements of permeable concrete roads; , nano-recombined titanium dioxide 60, silica sand powder 200, weakly acidic water (PH value=4) 80, water reducing agent 2, the mass ratio of inorganic resin emulsion 2 to make photocatalyst suspension; Spray the permeable material sample block, spray 5g per asphalt concrete permeable material sample block, and immediately use 100% carbonic acid high-pressure gas to blow the sprayed surface after spraying, so that the surface can reach room temperature and quickly dry and harden.

Embodiment 2

[0014] Use granite crushed stones with an average particle size of 3.5mm and asphalt as raw materials, mix and heat them to make asphalt concrete permeable material samples with a length of 100mm×width 50mm×thickness 5mm and a porosity of 30% according to the construction requirements of permeable concrete roads; , nano-recombined titanium dioxide 60, silica sand powder 200, weakly acidic water (PH value=5) 80, water reducing agent 2, the mass ratio of inorganic resin emulsion 2 to make photocatalyst suspension; Spray the permeable material sample block, spray 5.5g per asphalt concrete permeable material sample block, and immediately use 100% carbonic acid high-pressure gas to blow the sprayed surface after spraying, so that the surface can reach normal temperature and quickly dry and harden.

Embodiment 3

[0016] Use granite crushed stones with an average particle size of 3.5mm and asphalt as raw materials, mix and heat them to make asphalt concrete permeable material samples with a length of 100mm×width 50mm×thickness 5mm and a porosity of 30% according to the construction requirements of permeable concrete roads; , nano-recombined titanium dioxide 60, silica sand powder 200, weakly acidic water (PH value=6) 80, water reducer 2, inorganic resin emulsion 2 mass ratio to make photocatalyst suspension; The permeable material sample block is sprayed, and each asphalt concrete permeable material sample block is sprayed 6 times. Immediately after spraying, 100% carbonic acid high-pressure gas is used to blow the sprayed surface to make the surface reach normal temperature and quickly dry and harden.

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Abstract

The invention discloses a photocatalyst functional road material preparation method. The method comprises the following steps: 1, using broken granite with the average particle size of 3.5mm and asphalt as raw materials, mixing, heating, and making asphalt concrete permeable material sample blocks with the length of 100mm, the width of 50mm, the thickness of 5mm and the void fraction of 30% according to permeable concrete road construction requirements; using alumina cement and silica sand powder as aggregates and nanometer recombinant titanium dioxide microparticles obtained after 1500DEG C high temperature sintering as a photocatalyst, adding a water reducer and an inorganic resin emulsion, mixing with a weakly acidic solution (with the pH value of 4-6), and carrying out high frequency oscillation to prepare a photocatalyst suspension; and 3, spraying the asphalt concrete permeable material sample blocks with the prepared photocatalyst suspension, and instantly blowing the sprayed surface by a 100% carbonic acid high pressure gas to realize the normal temperature rapid drying hardening of the surface.

Description

technical field [0001] The invention relates to a preparation method of a photocatalyst functional road material, which enables the road to have the functions of decomposing and degrading harmful chemical substances (VOC, PM2. method of function. Background technique [0002] Traditional permeable roads have functions such as water permeability, water resource recycling, dust reduction, and noise reduction, which are conducive to supplementing groundwater reserves and reducing "urban desertification", which is of great significance for improving the urban ecological environment and the lack of water resources. The technical index is limited by the difficulty of the ratio coefficient of sol and aggregate, so the strength, porosity and water permeability are greatly affected. There is a lack of self-cleaning ability around the gap, and the gap is filled with dust over time, and the water permeability is greatly affected. The porosity of the permeable road material makes the r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/26C04B28/00C04B41/65
Inventor 李文秀努民
Owner BEIJING JIANYUAN TIANDI ENVIRONMENTAL PROTECTION TECH
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