Preparation method and application method of self-temperature-adjusting road coating material

A coating material and pavement technology, applied in coatings, asphalt coatings, epoxy resin coatings, etc., can solve problems such as temperature shrinkage cracks on the pavement, large temperature differences, and reduced pavement durability, so as to actively adjust the pavement temperature and construction way simple effect

Active Publication Date: 2015-07-08
CCCC FIRST HIGHWAY CONSULTANTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many ways to adjust the temperature of the road surface and alleviate the urban heat island effect, but each has its own shortcomings, such as the poor water damage resistance of the permeable pavement and the water-retaining pavement, and the poor durability of the pavement; The transmission of heat to the inside of the pavement structure is cut off, resulting in a large temperature difference inside the pavement, which is likely to cause temperature shrinkage cracks on the pavement and reduce the durability of the pavement

Method used

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  • Preparation method and application method of self-temperature-adjusting road coating material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Step 1: Take 80 parts by weight of vanadium pentoxide powder, 80 parts by weight of oxalic acid and 1 part by weight of tungstate, put them into 150 parts by weight of deionized water, and stir them fully at a temperature of 150°C until the three are completely reaction, and then dry the solution.

[0037] Among them, the tungstate is sodium tungstate.

[0038] Step 2: Thermally decompose the material obtained in Step 1 under a vacuum condition of 380° C. to obtain vanadium dioxide and its dopant nanopowder.

[0039] Step 3: Weigh 20 parts by weight of the nano-powder material obtained by step 2 and add it to 10 parts by weight of emulsified asphalt, then add 10 parts by weight of water-based epoxy resin, 10 parts by weight of curing agent and 10 parts by weight of part of water to obtain a self-regulating pavement coating material.

[0040] The emulsified asphalt is cationic emulsified asphalt, which is made by asphalt, cationic emulsifier and water through the norma...

Embodiment 2

[0044] Step 1: Take 85 parts by weight of vanadium pentoxide powder, 85 parts by weight of oxalic acid and 2 parts by weight of tungstate, put them into 200 parts by weight of deionized water, and stir them fully at a temperature of 165°C until the three are completely reaction, and then dry the solution.

[0045] Among them, the tungstate is calcium tungstate.

[0046] Step 2: Thermally decompose the material obtained in Step 1 under a vacuum condition of 380° C. to obtain vanadium dioxide and its dopant nanopowder.

[0047] Step 3: Weigh 30 parts by weight of the nano-powder material obtained by step 2 and add it to 15 parts by weight of emulsified asphalt, then add 20 parts by weight of water-based epoxy resin, 20 parts by weight of curing agent and 20 parts by weight of part of water to obtain a self-regulating pavement coating material.

[0048] The emulsified asphalt is cationic emulsified asphalt, which is made by asphalt, cationic emulsifier and water through the nor...

Embodiment 3

[0052] Step 1: Take 90 parts by weight of vanadium pentoxide powder, 90 parts by weight of oxalic acid and 4 parts by weight of ammonium fluoride, put them into 250 parts by weight of deionized water, and stir them fully at a temperature of 180°C until the three parts are completely reaction, and then dry the solution.

[0053] Among them, tungstate is ammonium tungstate.

[0054] Step 2: Thermally decompose the material obtained in Step 1 under a vacuum condition of 380° C. to obtain vanadium dioxide and its dopant nanopowder.

[0055] Step 3: Weigh 30 parts by weight of the nano-powder material obtained by step 2 and add it to 15 parts by weight of emulsified asphalt, then add 20 parts by weight of water-based epoxy resin, 20 parts by weight of curing agent and 30 parts by weight of part of water to obtain a self-regulating pavement coating material.

[0056]The emulsified asphalt is cationic emulsified asphalt, which is made by asphalt, cationic emulsifier and water throu...

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Abstract

The invention relates to a preparation method and an application method of a self-temperature-adjusting road coating material. The existing methods for adjusting road temperature and relieving urban heat island effect have the defects that due to poor water damage capability and blockage of transfer of heat into a road structure, internal temperature difference of a road is large, the road is easily cracked due to temperature contraction, and the durability of the road is lowered. The preparation method of the self-temperature-adjusting road coating material comprises the following steps: adding vanadium pentoxide powder, oxalic acid and chromium salt or tungstate or ammonium fluoride to deionized water, fully stirring till complete reaction and then drying; carrying out thermal decomposition at 380 DEG C in vacuum to obtain vanadium dioxide and nano powder of adulterants; adding the nano powder to cation emulsified asphalt, and then sequentially adding water-borne epoxy resin, a curing agent and water to finally obtain the self-temperature-adjusting road coating material. By the self-temperature-adjusting road coating material, the road temperature can be reduced by 5-10 DEG C in summer and can be improved by 5-10 DEG C in winter; the construction method of the self-temperature-adjusting road coating material is simple without other follow-up treatments, so the self-temperature-adjusting road coating material is applicable to highways of all grades.

Description

technical field [0001] The invention relates to a pavement coating material, in particular to a preparation method and a use method of a self-adjusting temperature pavement coating material. Background technique [0002] The aggravation of the urban heat island effect has seriously affected people's normal work and health. Among the many factors that cause the heat island effect, the asphalt pavement in urban roads is a main cause of the urban heat island effect due to the heat capacity of the asphalt mixture and its impermeability. At present, there are many ways to adjust the temperature of the road surface and alleviate the urban heat island effect, but each has its own shortcomings, such as the poor water damage resistance of the permeable pavement and the water-retaining pavement, and the poor durability of the pavement; The transmission of heat to the inside of the pavement structure is cut off, resulting in a large temperature difference inside the pavement, which i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D195/00C09D163/00C09D5/33C09D5/32E01C7/35E01C11/24
CPCY02A30/60
Inventor 陈团结王争军王晓路向豪张冬梅李永翔张光普
Owner CCCC FIRST HIGHWAY CONSULTANTS
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