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High-viscous emulsified asphalt for CA mortar and preparation method thereof

An emulsified asphalt, high-viscosity technology, applied in building components, building insulation materials, buildings, etc., can solve problems that affect driving comfort and safety, track slabs are easily damaged, and insufficient rigidity, and achieve improved resistance to driving loads and vibrations ability, strong bonding performance, and the effect of improving construction performance

Inactive Publication Date: 2010-02-10
ZHEJIANG LANTING HI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the existing emulsified asphalt is prepared into CA mortar, due to the strong sensitivity of the asphalt to temperature, the elastic modulus of the CA mortar is relatively high at low temperature, and the elasticity is insufficient, which affects the driving comfort and safety; when the temperature is high, the CA mortar The elastic modulus of mortar is low, and its deformability is good, but the rigidity is insufficient, which makes the track plate easy to damage

Method used

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  • High-viscous emulsified asphalt for CA mortar and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: Take 52.5 parts of 90# bitumen, 2.5 parts of SBS, and process it into modified bitumen; get 0.4 part of cationic emulsifier octadecylpropylenediamine, 0.2 part of cetyltrimethylammonium chloride, non- 0.55 parts of ionic emulsifier stearic acid amide polyoxyethylene ether, 0.8 parts of polyvinyl alcohol, 1.3 parts of hydrochloric acid, and 39.75 parts of water are formulated into an emulsion; the modified asphalt and the emulsion are processed into emulsified modified asphalt by emulsification equipment; Add 2 parts of SBR latex to the emulsified modified asphalt, and through the action of stirring and static mixer, high-viscosity emulsified asphalt can be prepared.

Embodiment 2

[0025] Embodiment 2: Get 52.5 parts of 70# bitumen, add SBS, emulsifier, stabilizer, hydrochloric acid and water, SBR latex and preparation method are the same as embodiment 1.

Embodiment 3

[0026] Example 3: Take 53.3 parts of 90# asphalt, 3 parts of SBS, 3 parts of SBR, 0.6 part of cationic emulsifier hexadecylamide quaternary amine, 0.2 part of cetyltrimethylammonium chloride, nonionic emulsifier fatty acid amide poly 0.6 part of oxyethylene ether, 0.4 part of sodium carboxymethylcellulose, 0.4 part of ammonium chloride, 1.5 parts of hydrochloric acid, 37 parts of water, and the preparation method is the same as in Example 1.

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Abstract

The invention relates to a high-viscous emulsified asphalt for CA mortar and a preparation method thereof, belonging to the field of preparation technology of the CA mortar used for a high speed railway plate-type ballastless track. The high-viscous emulsified asphalt comprises the components by weight percent: 45-65% of asphalt, 2-4% of SBS, 2-8% of SBR, 0.3-1.5% of cation-type emulsifier, 0.2-1.2% of non-ionic emulsifier, 0.5-2% of stabilizing agent, 1-4.5% of additive and the rest of water, wherein modifier includes the SBS and the SBR, and emulsifier contains the cation-type emulsifier andthe non-ionic emulsifier; and the sum of the weight percent of the components is 100%. The invention has reasonable compound design, and can effectively improve the capabilities of high and low temperature resistance of asphalt emulsified liquid.

Description

technical field [0001] The invention relates to a high-viscosity emulsified asphalt for CA mortar and a preparation method thereof, and belongs to the technical field of preparation of CA mortar for slab ballastless tracks of high-speed railways. Background technique [0002] The high-speed railway adopts slab-type ballastless track. Its structural feature is to lay a concrete base on the subgrade, place a prefabricated track slab on the base, reserve a gap of 3 to 5 cm between the two, and pour a kind of CA mortar (cement asphalt mortar) After curing, it forms a uniform filling cushion with a certain degree of rigidity and elasticity. The cushion is the key component of the elastic adjustment layer in the slab ballastless track structure. Therefore, the production of CA mortar is one of the core technologies of slab ballastless track, and emulsified asphalt is the most important thing to determine the quality of CA mortar. After the existing emulsified asphalt is prepared...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L25/10C08L9/08C04B26/26
Inventor 杨林江程建中汤薇
Owner ZHEJIANG LANTING HI TECH
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