Emulsifier for high-iron emulsified asphalt and preparation method thereof

Abstract

The invention relates to an emulsifier for high-iron emulsified asphalt and a preparation method thereof. The emulsifier comprises the following raw materials in part by weight: 35.6 to 63.0 parts of alkylamine emulsifier, 20.2 to 38.3 parts of polyxyethylated alkylphenol emulsifier, 0.3 to 1.1 parts of aid 1, 0 to 1.0 part of aid 2 and 5.0 to 8.0 parts of aid 3. The emulsified asphalt prepared from the emulsifier can be used in a relatively wide temperature range and can be cooled rapidly without breaking emulsion. The emulsifier has the outstanding characteristics that: an emulsifier which is suitable for different temperature environments can be compounded by adjusting the composition proportion of the emulsifier and the problems of poor thermal stability of the high-iron emulsified asphalt and easy emulsion breaking are solved; and the emulsifier has high thermal stability, a small using amount and a wide application range, is easy and convenient to operate during use, can be prepared into high-stability high-iron emulsified asphalt and can lower the cost of an emulsion additive by about 20 percent.

Description

technical field

[0001] The invention relates to the field of building materials for high-speed railway slab ballastless tracks, in particular to an emulsifier for high-speed railway emulsified asphalt and a preparation method thereof. Background technique

[0002] Slab track is a ballastless track structure suitable for the development of high-speed railways. It is more stable than ballasted track, and its operation and maintenance amount and maintenance cost are much lower than ballasted track. Cement emulsified asphalt mortar is a key component of slab track, it is made of emulsified asphalt, cement, fine aggregate, admixture materials, polymer emulsion, water, aluminum powder, various admixtures and other raw materials at room temperature. It is used as the elastic adjustment filling layer between the slab track concrete base and the track slab, and is a semi-rigid body with both concrete rigidity and asphalt elasticity. The main functions of the cement emulsified asphal...

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