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Emulsified asphalt cold-recycling layer interface bonding material as well as preparation method and application thereof

A technology of emulsified asphalt and adhesive materials, which is applied in the field of chemical construction materials, can solve the problems of affecting the performance of the regeneration layer and even other layers, reducing the effect of interfacial bonding and water release, and affecting the service life of the road, so as to reduce the shear damage between layers, Improve the application value, and the waterproof effect will continue to be effective

Active Publication Date: 2021-01-12
山西工程科技职业大学 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The emulsified asphalt cold recycling technology belongs to the cold mix and cold pavement technology. Compared with the hot mix asphalt mixture, the cold recycled asphalt mixture lacks the process conditions for heating and activation of the original asphalt, and the surfactant in the emulsified asphalt only has a weak effect on the aged asphalt. Activation, plus waste asphalt mixture as the aggregate itself has poor strength, and the rolling of vehicles during construction or later service can easily cause the aggregate to be broken, and the seepage water will freeze and thaw after entering, causing the performance of the regeneration layer to attenuate, so emulsification Water damage resistance of cold recycled asphalt needs to be further improved
[0005] Usually the emulsified asphalt cold recycled layer is used as the base layer or the lower layer. The recycled layer is sprinkled with conventional emulsified asphalt or modified emulsified asphalt for bonding and waterproofing. The softening point of ordinary emulsified asphalt or modified emulsified asphalt is usually at 40°C. -60°C, the hot asphalt mixture of the upper layer is often around 150°C, and it is repeatedly rubbed by the road roller, which may easily cause the rupture of the waterproof layer, resulting in a decrease in the effect of interfacial bonding and water release. Melt failure affects the performance of the regeneration layer and even other layers, and affects the service life of the road

Method used

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  • Emulsified asphalt cold-recycling layer interface bonding material as well as preparation method and application thereof
  • Emulsified asphalt cold-recycling layer interface bonding material as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0037] The preparation method of the emulsified asphalt cold regeneration layer interface bonding material of the present embodiment specifically comprises the following steps:

[0038] S1. Preparation of component C: add 1 part of polyvinyl alcohol particles to 9 parts of water, soak for 30 minutes first, and extend the soaking time appropriately according to the dissolution of polyvinyl alcohol. Then heat it to 80°C with a water bath to stop heating, and cool to room temperature for later use;

[0039] Preparation of components S2 and D: Grind 2 parts of solid SBS into a powder below 0.075 mm, dissolve it in xylene at room temperature until it becomes transparent, and use it as a precursor liquid SBS for later use; then use 0.082 parts of dibenzyl biphenyl polyoxyethylene ether Add 0.083 parts of fatty alcohol polyoxyethylene ether to 2.64 parts of water to make a compound emulsifier solution, heat it to 50-60°C; add the compound emulsifier solution to liquid SBS, and shear ...

Embodiment 2

[0043] The preparation method of the emulsified asphalt cold regeneration layer interface bonding material of the present embodiment specifically comprises the following steps:

[0044] Preparation of S1 and component C: add 0.7 parts of polyvinyl alcohol particles to 9.3 parts of water, soak for 30 minutes first, and extend the soaking time appropriately according to the dissolution of polyvinyl alcohol. Then heat to 80°C with a water bath, stop heating, and cool to room temperature for later use;

[0045]Preparation of components S2 and D: Grind 2 parts of solid SBS into powders below 0.075 mm, dissolve in xylene at room temperature until transparent, and use 0.082 parts of alkylphenol polyoxyethylene ether for sulfonation Add succinate and 0.083 parts of alkylphenol polyoxyethylene to 2.64 parts of water to make a composite emulsifier solution, and heat it to 50-60°C; add the composite emulsifier solution to liquid SBS and heat it at 7800-12000 rpm Under-shear emulsificati...

Embodiment 3

[0049] The preparation method of the emulsified asphalt cold regeneration layer interface bonding material of the present embodiment specifically comprises the following steps:

[0050] Preparation of S1 and component C: Add 0.5 parts of polyvinyl alcohol particles to 9.5 parts of water, soak for 30 minutes first, and extend the soaking time appropriately according to the dissolution of polyvinyl alcohol. Then heat to 80°C with a water bath, stop heating, and cool to room temperature for later use;

[0051] Preparation of components S2 and D: Grind 2 parts of solid SBS into powders below 0.075 mm, dissolve in xylene at room temperature until transparent, and use 0.055 parts of alkylphenol polyoxyethylene ether for sulfonation Add succinate, 0.055 parts of dibenzyl biphenyl polyoxyethylene ether and 0.055 parts of alkylphenol polyoxyethylene to 2.64 parts of water to make a composite emulsifier solution, and heat it to 50-60°C; add the composite emulsifier solution to In liqui...

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Abstract

The invention relates to an emulsified asphalt cold-recycling layer interface bonding material which is prepared from the following raw materials: a component A, a component B, a component C, a component D and a component E. The component A is waterborne epoxy resin; the component B is a polyamide epoxy curing agent; the component C is formed by mixing a stabilizer and water; the component D is formed by mixing solid SBS, xylene, a compound emulsifier, a defoaming agent and water; the component E is formed by mixing asphalt, a medium-crack emulsifier, phosphoric acid and water; the emulsifiedasphalt cold-recycling layer interface bonding material comprises following components in parts by mass: 3-25 parts of the component A, 3-25 parts of the component B, 3-15 parts of the component C, 5-10 parts of the component D and 40-90 parts of the component E, the interface bonding performance between the emulsified asphalt cold-recycling layer and the upper layer is improved, the water damageresistance and the durability of the pavement are improved, and the product is non-toxic, high in stability, high in bonding strength, high in shear strength, good in waterproof performance and good in durability.

Description

technical field [0001] The invention belongs to the technical field of chemical building materials, and in particular relates to an emulsified asphalt cold regeneration layer interface bonding material, a preparation method and an application thereof. Background technique [0002] Asphalt pavement accounts for more than 80% of my country's built roads, and all of them have entered the stage of major and intermediate repairs. A large number of excavated and milled asphalt mixtures are discarded, which not only pollutes the environment, but also wastes resources. [0003] Asphalt pavement emulsified asphalt cold recycling technology is a resource recycling method that adds emulsified asphalt to the road surface after milling, crushing, and screening waste asphalt pavement. This technology can save a lot of raw materials such as asphalt and sand, saving At the same time, it is beneficial to the treatment of waste asphalt mixture, reducing the destruction of forest vegetation ca...

Claims

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Application Information

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IPC IPC(8): C09J195/00C09J163/00C09J153/02C09J11/04C09J11/08C09J11/06E01C7/18
CPCC09J195/00C09J11/04C09J11/08C09J11/06E01C7/18E01C7/185C08L2205/035C08K2003/329C08L53/02C08L63/00C08L29/04C08K3/32C08K5/17Y02W30/91
Inventor 杜素军张俊红张美珍郭重阳刘红应赵宝平李瑞程劲钊史云飞
Owner 山西工程科技职业大学
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