Cement asphalt composite self-melting snow pavement material and preparation method thereof
A technology of self-melting snow pavement and cement asphalt, which is applied to ceramic products, other household appliances, household appliances, etc., can solve the problem that the anti-rutting performance cannot meet the load requirements, and achieve good snow-melting effect, good electrical conductivity, and improved mechanical properties. Effect
Active Publication Date: 2021-09-24
WUHAN UNIV OF TECH
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Problems solved by technology
However, the anti-rutting performance of general asphalt concrete cannot meet the load requirements of heavy-duty roads, intersections or airport roads.
Method used
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[0037] The cement-asphalt composite self-melting snow pavement material is applied to the upper layer, and the open-graded conductive asphalt concrete with a porosity of 21%~25% is used as the matrix, and the conductive cement mortar is used as the grouting material, which is prepared by the self-leveling pouring method.
[0038] According to the requirements of "Code for Design of Highway Asphalt Pavement" (JTG D50-2006), the indoor mixture ratio design is carried out according to the OGFC (Open Grading Anti-skid Wear Layer) gradation design method and the asphalt mixture evaluation standard. After design adjustment, the mass ratio of various raw materials in the conductive asphalt concrete matrix is determined to be: coarse aggregate: fine aggregate: filler: asphalt: graphite powder: steel wool fiber = 334:56:1:20:10:16 , and its specific synthesis gradation is shown in Table 1.
[0039] Table 1: Synthetic gradation of conductive asphalt concrete matrix
[0040]
[004...
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Abstract
The invention belongs to the technical field of road engineering materials. A cement-asphalt composite self-melting snow pavement material, characterized in that open-graded conductive asphalt concrete containing conductive materials with a porosity of 21% to 25% is used as the matrix, and conductive cement mortar containing conductive materials is used as the gap filler ; The mass percentage of the conductive asphalt concrete is 82%~92%, and the mass percentage of the conductive cement mortar is 8%~18%. The road surface self-melting snow function is realized by means of electric heating. The preparation process of the pavement material is simple, the self-melting snow effect is good, and the anti-rutting performance is better than that of the existing conductive asphalt concrete.
Description
technical field [0001] The invention belongs to the technical field of road engineering materials, and in particular relates to conductive asphalt concrete, conductive cement mortar, cement-asphalt composite road surface material and a preparation method thereof. Background technique [0002] Ice on the road surface is one of the major safety hazards in transportation. Cars, airplanes and other vehicles will have brake failure due to large-scale icing on the road, resulting in traffic jams and even serious safety accidents such as casualties. In northern China, roads are icing very badly. In order to ensure normal transportation, it is necessary to carry out snow melting and deicing work day and night. The traditional way of snow melting and deicing is generally manual or mechanical deicing, and deicing agent is applied at the same time. Deicing agents make roads less icy by lowering the freezing point of aqueous solutions. However, when the temperature is too low, the eff...
Claims
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IPC IPC(8): C04B26/26C04B38/00C04B28/04C04B41/69C04B111/94
CPCC04B26/26C04B28/04C04B41/5079C04B41/69C04B2111/0075C04B2111/94C04B14/14C04B14/28C04B14/024C04B14/48C04B38/0041C04B38/0074C04B14/068C04B41/4535
Inventor 陈美祝杨天元吴少鹏刘全涛谢君袁高明张东崔培德肖志峰
Owner WUHAN UNIV OF TECH