Modified emulsified asphalt and preparation method thereof

Abstract

The invention relates to modified emulsified asphalt and a preparation method thereof. The modified emulsified asphalt comprises, by mass, 40-50 parts of asphalt, 6-16 parts of sulfur, 2-10 parts of styrene-butadiene latex, 2-5 parts of a cationic emulsifier, 0.1-2 parts of a stabilizer, 0.5-3 parts of an acid and 35-40 parts of water. The modified emulsified asphalt improves high temperature andlow temperature performances of the asphalt, saves the asphalt, reduces a production cost, improves the high temperature stability of the asphalt pavement, prevents the rutting and peeling of the asphalt pavement under a load and improves the anti-fatigue cracking performances of the pavement.

Description

technical field [0001] The invention belongs to the field of modified emulsified asphalt for roads, and in particular relates to a modified emulsified asphalt and a preparation method thereof. Background technique [0002] At present, the method of using sulfur to modify asphalt is to process sulfur and other additives into a sulfur modifier through a special process. When the asphalt mixture is mixed, the sulfur modifier replaces part of the asphalt and directly adds it to the mixing pot. , Sulfur is melted in hot asphalt mixture to prepare sulfur modified asphalt mixture. The existing sulfur modifier is mainly Shell's SEAM, that is, sulfur-enhanced asphalt modifier. The main component is sulfur, and it also contains a small amount of smoke inhibitor and plasticizer. The disadvantage of this application method is that the temperature of the mixture should not exceed 150°C, and the time for the mixture to be transported from mixing to the construction site should be control...

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Problems solved by technology

[0003] The above-mentioned sulfur-modified asphalt preparation method and application method belong to warm mix asphalt mixture, which is realized by heating the mixture at high temperature in the mixing pot, but the temperature of the mixture should not be too high, and the storage time should not be too long, otherwise the sulfur will Sulfur vapor, H 2 S, SO 2 Harmful gases and smog with pungent smell, not only pollute the environment, but also cause harm to human body

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