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Preparation method for pavement micro-surfacing with hydrophobicity and anti-icing performance

A micro-surfacing and hydrophobic technology, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve the problems of small molecular weight of hydrophobic agent, loss of snow-melting function, poor hydrophobic performance, etc., and achieve good economy , Improved anti-icing life, good environmental protection effect

Active Publication Date: 2016-08-17
SHANXI ROAD & BRIDGE CONSTR GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although part of it involves the idea of ​​hydrophobic anti-icing, the molecular weight of the dimethyl silicone oil hydrophobic agent used is small, and the hydrophobic performance is not good. , it is very easy to lose the snow melting function gradually with the loss of snow melting agent

Method used

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  • Preparation method for pavement micro-surfacing with hydrophobicity and anti-icing performance
  • Preparation method for pavement micro-surfacing with hydrophobicity and anti-icing performance
  • Preparation method for pavement micro-surfacing with hydrophobicity and anti-icing performance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Heat 964 parts of Karamay 90# asphalt to 160-170°C, add 35 parts of styrene-butadiene-styrene rubber block copolymer, stir and swell for 1 hour, cut with high-speed shear for 40 minutes, add 1 part of sulfur Continue shearing for 10 minutes, heat preservation and development for 1 hour to obtain modified asphalt; heat 466 parts of tap water to 60-70 °C, add 30.8 parts of surfactant and 1.5 parts of calcium chloride, shear and stir evenly, add dilute hydrochloric acid until the pH of the liquid is 3.5 to 4.5 to obtain soap liquid; slowly add 1000 parts of modified asphalt to 538.5 parts of soap liquid with heat preservation temperature of 70-80 ℃, and use high-speed shearing machine to shear and disperse the modified asphalt in the soap liquid, the modified asphalt Pour all into the soap solution and cut evenly, add 40 parts of 703 room temperature vulcanized silicone rubber and continue to cut for 20 minutes to obtain emulsified asphalt with hydrophobic properties after ...

Embodiment 2

[0027] Heat 1060 parts of SK110# asphalt to 160-170°C, add 38.5 parts of styrene-butadiene rubber block copolymer, stir and swell for 2 hours, use high-speed shears to cut for 70 minutes, add 1.1 parts of sulfur and continue to cut for 20 minutes , heat preservation and development for 1 hour to obtain modified asphalt; heat 513 parts of tap water to 60-70 °C, add 33.8 parts of surfactant and 1.7 parts of polyacrylamide, shear and stir evenly, add dilute hydrochloric acid until the pH value of the liquid is 3.5-4.5 to obtain Soap solution; slowly add 1100 parts of modified asphalt into 592.3 parts of soap solution with heat preservation temperature of 70-80°C. After being put into the solution and sheared evenly, add 44 parts of 705 room temperature vulcanized silicone rubber and continue shearing for 20 minutes to obtain emulsified asphalt with hydrophobic properties after demulsification; 1500 parts of mineral powder, 600 parts of mm aggregate 900 parts, 0.3~0.6m aggregate 2...

Embodiment 3

[0029] Heat 867.6 parts of SK90# asphalt to 160-170°C, add 31.5 parts of styrene-butadiene-styrene rubber block copolymer, stir and swell for 1.5 hours, use high-speed shears to cut for 60 minutes, and add 0.9 parts of sulfur Continue to shear for 15 minutes, keep warm for 1 hour to obtain modified asphalt; heat 419 parts of distilled water to 60-70 °C, add 27.7 parts of surfactant and 1.4 parts of polyacrylamide, shear and stir evenly, add dilute hydrochloric acid until the pH of the liquid is 3.5 to 4.5 to obtain soap liquid; slowly add 900 parts of modified asphalt to 484 parts of soap liquid at a temperature of 70 to 80 ℃, and use high-speed shearing machine to shear and disperse the modified asphalt in the soap liquid, the modified asphalt Pour all into the soap solution and cut evenly, add 36 parts of 703 room temperature vulcanized silicone rubber and continue to cut for 20 minutes to obtain emulsified asphalt with hydrophobic properties after demulsification; , 850 par...

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Abstract

The invention discloses a preparation method for pavement micro-surfacing with hydrophobicity and anti-icing performance. According to the invention, by combining a hydrophobic surface with a pavement micro-surfacing maintenance technology, a hydrophobic agent highly dispersed in emulsified asphalt is uniformly distributed in a pavement layer after being subjected to demulsification, while the hydrophobic agent dispersed in the pavement layer forms a hydrophobic surface on the pavement surface through hydrophobic long chains of the hydrophobic agent; thus, surface energy of the pavement is reduced; adhesion properties of an ice layer to the asphalt pavement is significantly weakened, so the ice layer on the asphalt pavement in winter is liable to be removed; and the hydrophobic agent is dispersed in the whole micro-surfacing structure layer, so hydrophobicity of a maintenance layer does not rapidly decline with the wearing action of vehicle wheels.

Description

【Technical field】 [0001] The invention belongs to the field of pavement maintenance materials, and in particular relates to a method for preparing pavement micro-surfaces with hydrophobic and anti-icing properties. 【Background technique】 [0002] The antiskid performance of the road is a key factor to ensure the safe driving of vehicles. In winter, the snow and ice on the road will lead to a sharp decline in its anti-skid performance, and the tire adhesion coefficient will be greatly reduced, which will lead to a significant extension of the braking distance of the vehicle, loss of direction control, and frequent traffic accidents. Existing methods of ice and snow removal in winter mainly include spraying deicing agents, manual / mechanical deicing, thermal ice melting of road surfaces, and melting of salty road surfaces. However, these methods have problems such as polluting the environment, lacking long-term effect, and poor durability. The problem of road surface anti-ici...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26C04B14/04C04B18/12C04B22/02C04B22/12C04B24/26C04B24/42C04B111/27
CPCC04B26/26C04B2111/76C04B2111/27Y02W30/91
Inventor 陈华鑫吴永畅夏慧芸宋莉芳况栋梁袁腾魏莘欣
Owner SHANXI ROAD & BRIDGE CONSTR GROUP
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