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Cementing compound for pavement layers

An interlayer and adhesive technology of pavement, applied in the direction of adhesive, adhesive type, asphalt material adhesive, etc., can solve the problems of poor adhesion of asphalt mixture, low asphalt ductility, poor crack resistance, etc. Strong performance, improve mixing construction performance, improve anti-slip effect

Active Publication Date: 2013-07-17
重庆市智翔铺道技术工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If it is not handled properly, there may be road surface diseases such as interlayer slippage and wrapping. Slippage will directly lead to cracking of the road surface, and wrapping will directly lead to the smoothness of the road surface. At the same time, the quality of asphalt and asphalt mixture is poor, that is, asphalt mixture Poor adhesion of asphalt, or low ductility of asphalt, resulting in poor crack resistance, if water seeps in, it will cause cracks in the road surface, and then cause road surface damage

Method used

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  • Cementing compound for pavement layers
  • Cementing compound for pavement layers
  • Cementing compound for pavement layers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1: An adhesive for interlayers of pavement, a compound modified by mixing styrene-butadiene-styrene block copolymer SBS, styrene-butadiene rubber powder SBR and neoprene CR at a ratio of 3:1:1. Add 7 kg of agent and 28 kg of terpene resin into the container, then add 50 kg of gasoline, and stir well until a stable emulsion is formed. Then add 14.5 kg of 70°C heated at 80-100°C # Heavy delivery of asphalt and 0.5 kg of decabromodiphenyl ether, fully stirred until completely miscible, sealed in barrels for storage.

[0021] In general three-layer asphalt pavement (see figure 1 ), the lowermost layer is the pavement base layer 5, before paving the lower layer 4 of asphalt, the base layer 5 needs to be cleaned and sprayed with oil. Between the asphalt lower layer 4 and the asphalt middle layer 3, pave the road interlayer adhesive prepared in this embodiment, and pave the same adhesive between the asphalt middle layer 3 and the asphalt upper layer 2. Before applyi...

Embodiment 2

[0023] Example 2: An adhesive for interlayers of pavement, a compound modified by mixing styrene-butadiene-styrene block copolymer SBS, styrene-butadiene rubber powder SBR and neoprene CR at a ratio of 3:1:1. Add 21 kg of neutralizing agent and 16 kg of terpene resin into the container, then add 45 kg of ethyl acetate, and stir evenly until a stable emulsion is formed. Then add 17 kg of hot 70°C at 80-100°C # Heavy delivery of asphalt and 1 kg of decabromodiphenylethane, fully stirred until completely miscible, sealed in barrels for storage.

[0024] In the face of cement concrete pavement (see figure 2 ), between the cement concrete layer and the lower asphalt layer 4, and between the upper and lower layers of the asphalt, the pavement interlayer adhesive prepared in this embodiment is used as the adhesive layer. Before the construction of the adhesive layer, the working surface needs to be cleaned, and Keep dry.

[0025] The adhesive is applied to the cement concrete bas...

Embodiment 3

[0026] Example 3: An adhesive for pavement interlayers, which is a composite modification made by mixing styrene-butadiene-styrene block copolymer SBS, styrene-butadiene rubber powder SBR and neoprene CR at a ratio of 3:1:1. Add 14 kg of agent and 22 kg of terpene resin into the container, then add 55 kg of xylene and stir evenly until a stable emulsion is formed. Then add 7 kg of 70# heavy traffic asphalt heated at 80-100 °C and 2 kg of decabromodiphenylethane, stir well until it is completely miscible, and store in a sealed barrel.

[0027] The adhesive is applied to the cement concrete base surface or asphalt concrete base surface by mechanical spraying, and the dosage is controlled at 0.2-0.4kg / m 2 . After the construction is completed, carry out fully enclosed maintenance. The maintenance time is 4 to 8 hours in normal temperature weather, and the maintenance time is extended to 16 to 24 hours when the temperature is lower than 10°C. After the adhesive is completely cur...

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Abstract

The invention relates to a cementing compound for pavement layers. The cementing compound is prepared by evenly mixing the following ingredients in percentage by weight: 5-20% of heavy-duty bitumen, 45-55% of organic solvent, 16-28% of terpene resin, 7-21% of composite modifier, and 0.5-2.5% of flame retardant. The bonding strength, the shearing strength, high and low temperature resistance characteristic and processability of the heavy-duty bitumen can be improved through the composite modifier; through the added thickener terpene resin, not only can the viscosity of the heavy-duty bitumen be increased, but also the oxidation resistance and the thermostability can be improved; the compositely modified and thickened bitumen is solvated by adopting the volatilizable organic solvent, the compatibility and dissolubility of the heavy-duty bitumen with the modifier and the thickener can be improved, the pavements can be compact, the pavement layers are permeated and bonded firmly, the ductility is high, the crack resistance is strong, the blending construction performance can also be improved, and the construction work efficiency can be enhanced. The cementing compound is available, simple to prepare, and convenient to popularize in large scales.

Description

technical field [0001] The invention relates to an adhesive used between pavement layers, in particular to a layered paving and layered pressing between an asphalt pavement layer and a cement concrete pavement layer, between an asphalt pavement layer and a waterproof pavement layer, and between an asphalt pavement layer and an asphalt pavement layer A practical adhesive belongs to the field of bonding materials for road surface engineering. Background technique [0002] Compared with cement concrete pavement, the surface of asphalt pavement is flat and seamless, with little driving vibration, low noise, fast open traffic and easy maintenance, especially suitable for road construction in stages. Therefore, asphalt pavement is more and more widely used in new roads. For many old cement concrete pavements, the "white to black" method is generally adopted in the process of renovation and reconstruction, that is, on the basis of the treatment of the original cement concrete pave...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J145/00C09J195/00C09J153/02C09J109/06C09J111/00C09J11/06
Inventor 徐建晖伍朝晖吕春飞牟建波王远政代剑锋
Owner 重庆市智翔铺道技术工程有限公司
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