Shape-stabilized phase-change heat-storage cooling pavement material suitable for high-temperature area

A technology of shape-setting phase change and pavement materials, which is applied to cohesive pavement paved on site, roads, roads, etc., and can solve the problem of unexplained dynamic stability, strength and other road performance of asphalt mixtures, which affect phase change asphalt mixtures. Work performance, not suitable for large-scale production and application, etc., to solve the problem of high temperature rutting, reduce temperature sensitivity, and good heat insulation
CN106957157AActive Publication Date: 2017-07-18CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
Publication Date
2017-07-18

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Abstract

The invention relates to a preparation method and application method of a shape-stabilized phase-change heat-storage cooling pavement material suitable for a high-temperature area. The method is characterized in that a shape-stabilized phase-change material is prepared from stearic acid, palmitic acid and expanded perlite at the ratio of 2:3:2.5 by adopting a vacuum impregnation method. The application method of the shape-stabilized phase-change heat-storage cooling pavement material is a design method of mixing the shape-stabilized phase-change material into an asphalt mixture and adopting asphalt mastic as the mixture. The prepared shape-stabilized phase-change heat-storage cooling pavement material suitable for the high-temperature area has good cooling and heat-insulating properties, the phase change temperature is 52.8 DEG C, the phase change enthalpy can reach 132J / g, the pavement temperature can be reduced to 4.4 DEG C and the problem of an asphalt pavement track in the high-temperature area can be effectively solved.
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Description

technical field

[0001] The invention relates to a preparation method and an application method of a fixed-shape phase-change heat storage and cooling pavement material suitable for high-temperature regions. Background technique

[0002] Asphalt pavement has been widely used due to its good flatness, comfort, low noise, comfortable driving, wear resistance, and easy maintenance. In my country's high-grade pavement, asphalt pavement occupies as high as 90%. However, asphalt mixture is a viscoelastic material whose shear strength and cohesion decrease significantly with increasing temperature. The high temperature is common in summer in my country, and asphalt can easily reach the softening point, leading to high temperature instability and damage, of which rutting is the main damage form. Most of the existing solutions are "passive" measures such as the use of modified asphalt and the use of skeleton-type aggregate gradation, which not only greatly increases the cost, but al...

Claims

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