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

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...

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