Water-proof and oil-repelling agent of colorless organic silicon resin for asphalt road surface

A technology of resin asphalt and silicone, applied in other chemical processes, chemical instruments and methods, etc., can solve the problems of asphalt pavement oil pollution, difficult immersion of asphalt film and aggregate, damage, etc.

Active Publication Date: 2005-10-19
WUHAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current asphalt pavement adds a waterproof layer design, that is, in the structural combination design of the asphalt pavement, at least two layers of densely graded asphalt concrete are designed or the necessary water-proof layer is installed, such as the permeable layer oil must be poured between the underlying layer and the base layer, Adhesive oil should be applied between the asphalt pavements to reduce water seepage, but it cannot fundamentally solve the problem of waterproof and anti-seepage of asphalt pavement. Difficult to immerse, and more difficult to immerse between the asphalt membrane and the aggregate, thereby achieving water stability and durability of asphalt pavements
In addition, some special road sections, such as gas stations, parking lots, etc., due to fuel leakage, gasoline and diesel oil, can dissolve asphalt, resulting in the peeling of the asphalt film on the surface of the stone, resulting in oil pollution and damage to the asphalt pavement

Method used

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  • Water-proof and oil-repelling agent of colorless organic silicon resin for asphalt road surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 and 2

[0018] The mass ratios of the organosilicon resin solutions of Examples 1 and 2 to penetrants and tackifiers are 92:4:4 and 92:2:6 respectively, and their colorless organosilicon resin asphalt pavement waterproof and oil repellent properties are listed in Table 1. It can be seen from the data in the table that the above samples are homogeneous liquids, non-emulsions, excellent centrifugal stability, no stratification, and no insoluble particles. Its permeability and viscosity can be realized by adjusting the amount of penetrant isobutyltriethoxysilane and tackifier γ-aminopropyltriethoxysilane according to actual requirements.

[0019] The water seepage test and the calculation of the water seepage coefficient are as follows: apply a layer of sealing material along the circle of the base of the water seepage meter, and press it tightly with your hands while applying it, so that the sealing material fills the gaps in the mixture on the surface of the test piece and is firmly bo...

Embodiment 3

[0027] The emulsified asphalt spraying vehicle sprays the waterproof and oil-resistant agent of Example 2 on the entire road width in a large area: the asphalt overlay surface layer structure of an old cement concrete road surface is a stress-absorbing layer with a thickness of 2.5 cm, and the porosity of the on-site core sample is 1 to 3%. The surface layer is AC-20I, the thickness is 6cm, the porosity of the field core sample is 4-7%, the surface layer is Superpave12.5, the thickness of the field core sample is 4cm, and the porosity is 8-10%. The water seepage tester found that nearly 240 meters of continuous road surface seepage is serious, as shown in Table 2. On-site test of colorless silicone resin asphalt pavement waterproof and oil-repellent agent was carried out on this road section. The emulsified asphalt sprayer sprayed along the driving direction for the first time, and the dosage was controlled at 475g / square meter; after 5 hours, the waterproof and oil-repellent a...

Embodiment 4

[0029] The situation of applying the waterproof and oil-repellent agent of Example 1 by local small-area manual spraying with an agricultural sprayer: it was detected by a water seepage tester that local water seepage was serious due to severe segregation of the local mixture on the asphalt pavement. Use agricultural sprayers to artificially spray these small areas of local water seepage. The first time is horizontal spraying, the dosage is 325g / square meter; after 3 hours, the second time is vertical spraying, the dosage is 225g / square meter; after another 3 hours Finally, carry out the third horizontal spraying, and the consumption is 325g / square meter. Table 3 shows the water seepage coefficient comparison before and after spraying the waterproof and oil repellant of Example 1 by the emulsified asphalt spraying vehicle.

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Abstract

The waterproof and oil-repelling agent for asphalt road surface consists of silicone resin solution, penetrant and tackifier in the weight ratio of 92 to 2-4 to 4-6. The penetrant is isobutyl triethoxyl silane and the tackifier is gamma-aminopropyl triethoxyl silane. The silicone resin solution is prepared with methyl triethoxyl silane, ethyl silicate, dimethyl diethoxyl silane, ethanol, alkali liquid and water in certain proportion and through mixing at room temperature and reaction at 70-90 deg.c for 1-2 hr. The waterproof and oil-repelling agent is thrice sprayed to asphalt road to form film in the bottom, middle and upper part of asphalt road surface to raise the water penetration performance, reduce water damage and raise oil contamination performance with affecting the other performance of asphalt road.

Description

technical field [0001] The invention relates to a colorless silicone resin waterproof and oil-resistant agent, in particular to a colorless silicone resin waterproof and oil-resistant agent for asphalt pavement, which belongs to the technical field of asphalt pavement maintenance and waterproof and anti-seepage materials, specifically organic Silicone resin solution material ratio, preparation method and application on asphalt pavement. Background technique [0002] Water damage to asphalt pavement has gradually attracted people's attention and has become a worldwide problem. Typical water damage phenomena are loose asphalt pavement and potholes. The surface of the loose aggregate is smooth, and the asphalt film is completely peeled off. The internal causes of water damage to asphalt pavement can be attributed to imperfect drainage facilities, excessive porosity of asphalt mixture, water seepage, insufficient pavement compaction, insufficient water damage resistance of asp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/00C09K3/18
Inventor 吴少鹏杨世明李波袁发祥磨炼同文进邱健刘小明
Owner WUHAN UNIV OF TECH
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