Slow-release salt compound phase change material asphalt mixture and preparation method thereof

A technology of composite phase change material and asphalt mixture, which is applied in the field of pavement materials, can solve the problems of high cost of materials, poor deicing and snow removal effect, and difficult construction, and achieves low cost of materials, reduction of snow removal times, and low construction difficulty. Effect

Active Publication Date: 2018-08-07
HEBEI INSTITUTE OF ARCHITECTURE AND CIVIL ENGINEERING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention proposes a slow-release salt compound phase change material asphalt mixture and its preparation method to solve the technical problems of the traditional road surface self-snow melting technology, which is difficult in construction, high in material cost, and poor in deicing and snow removal effects.

Method used

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  • Slow-release salt compound phase change material asphalt mixture and preparation method thereof
  • Slow-release salt compound phase change material asphalt mixture and preparation method thereof
  • Slow-release salt compound phase change material asphalt mixture and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] This slow-release salt composite phase change material asphalt mixture includes the following components by weight:

[0031] Slow release salt: 2 parts, composite phase change material: 0.75 parts, asphalt: 5 parts, auxiliary materials: 102 parts.

[0032] The fineness of the slow-release salt compound is 200 mesh.

[0033] In this embodiment, the chlorine salt in the slow-release salt compound is anhydrous calcium chloride, the pumice powder is volcanic rock powder, and the mass ratio of anhydrous calcium chloride to volcanic rock powder is 4:1.

[0034] Certainly in other embodiments, the chloride salt may be potassium chloride or sodium chloride or the like.

[0035] In this embodiment, the composite phase change material is composed of polyethylene glycol and organic bentonite, wherein the organic bentonite accounts for 5% of the weight of polyethylene glycol.

[0036] The auxiliary materials include the following components by weight: 52 parts of coarse aggregate...

Embodiment 2

[0042] This slow-release salt composite phase change material asphalt mixture includes the following components by weight:

[0043] Slow release salt: 3 parts, composite phase change material: 0.9 parts, asphalt: 6 parts, auxiliary materials: 104.2 parts.

[0044] The fineness of the slow-release salt compound is 200 mesh.

[0045] In other embodiments, the fineness of the slow-release salt compound can also be any one of 150-300 mesh.

[0046] In this embodiment, the chlorine salt in the slow-release salt compound is anhydrous calcium chloride, the pumice powder is volcanic rock powder, and the mass ratio of anhydrous calcium chloride to volcanic rock powder is 6:1.

[0047] In other embodiments, the chloride salt may be potassium chloride or sodium chloride, etc.

[0048] In this embodiment, the composite phase change material is composed of polyethylene glycol and organic bentonite, wherein the organic bentonite accounts for 9% by weight of polyethylene glycol.

[0049] Th...

Embodiment 3

[0056] In this example, slow-release salt: 2.5 parts, composite phase change material: 0.8 parts, asphalt: 5.1 parts, auxiliary materials: 103.1 parts.

[0057] The fineness of the slow-release salt compound is 200 mesh.

[0058] In other embodiments, the fineness of the slow-release salt compound can also be any one of 150-300 mesh.

[0059] In the present embodiment, the auxiliary materials include the following components by weight: 52 parts of coarse aggregate, 49 parts of fine aggregate, and 2.1 parts of mineral powder.

[0060] In this embodiment, the raw materials used for the slow-release salt compound and the composite phase change material are as follows.

[0061] Chloride, adopts the anhydrous calcium chloride that Beijing Compu Huiwei Technology Co., Ltd. produces; The number of shares is 65 parts.

[0062] The pumice powder is pumice powder produced by Shangyi County Wanjing Pumice Technology Co., Ltd., the specification is volcanic stone powder (red), and the f...

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Abstract

The invention discloses a mixture containing a slow-release saline compound, a composite phase-change material and asphalt and a preparation method of the mixture. The mixture containing the slow-release saline compound, the composite phase-change material and the asphalt is prepared from 2-3 parts of the slow-release saline compound, 0.75-0.9 part of the composite phase-change material, 5-6 parts of the asphalt and 100-110 parts of an auxiliary material. The preparation method of the mixture containing the slow-release saline compound, the composite phase-change material and the asphalt comprises the following steps that 1, the slow-release saline compound is prepared; 2, the composite phase-change material is prepared; 3, the asphalt mixture is prepared. According to the method, salt ingredients in the slow-release saline compound are gradually released out, chlorine salt cannot be released to the road surface at a time but gradually released to the road surface under the action of the road surface pressure and the pore water power due to the adsorption action of pelelith powder, the freezing point of the snow water on the road surface is lowered through the salt ingredients dissolved in snow water, an ice and snow melting effect is better under the condition that the road surface is iced in winter, and the problems of road ice and snow melting and driving safety in winter can be effectively solved.

Description

technical field [0001] The invention belongs to the technical field of pavement materials, in particular to a mixture containing salt compound phase change materials and a preparation method thereof. Background technique [0002] In winter, highways and ordinary roads are vulnerable to ice and snow, causing freeze-thaw damage to road surfaces and threatening people's lives and property. Every year, the ice and snow on the road will cause the braking distance of the car to become longer, and there are countless traffic accidents caused by unfavorable factors such as wheel slippage. [0003] Therefore, certain measures must be taken to reduce the ice and snow on the road surface and reduce the harm it brings to people. The current snow and ice removal technologies mainly include pavement external technology and pavement internal technology. The external technology of the road surface includes cleaning method and melting method; the cleaning method uses mechanical or manual c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/26C04B24/42C04B22/12C04B103/60C04B111/20
CPCC04B26/26C04B40/0039C04B40/0042C04B2103/0071C04B2111/0075C04B2111/29C04B14/00C04B18/141C04B24/32C04B24/425C04B22/124C04B14/16
Inventor 麻建锁王一沛蔡焕琴白润山闫志刚李云飞麻文兴庞力刚周苗苗冯拴
Owner HEBEI INSTITUTE OF ARCHITECTURE AND CIVIL ENGINEERING
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