Anti-rutting additive with high modulus and high strength as well as preparation method and applications thereof

Abstract

The invention relates to an anti-rutting additive with high modulus and high strength for an asphalt mixture as well as a preparation method and applications thereof. The polymer composite additive of the asphalt mixture is formed by mixing crosslinkable polyethylene, random polypropylene, tackifier, styrene-butadiene rubber and fiber, wherein the tackifier is terpene resin. The production method of the anti-rutting additive comprises the following steps: adding the raw materials in a proper processing device so that the raw materials are fully mixed and reacted; and granulating and shaping. The anti-rutting additive has cheap price, and can be used for increasing the road performances of the asphalt mixture such as high temperature stability, low temperature crack resistance and water stability, and prolonging the service life of pavement.

Description

technical field

[0001] The invention relates to a high-modulus, high-strength anti-rutting additive and its preparation, as well as the manufacture and application of modified asphalt mixture. The high-modulus and high-strength anti-rutting additive is a composite polymer additive for asphalt mixture, and is a material for high-grade highway pavement. The invention belongs to the technical field of materials. Background technique

[0002] As a widely used pavement material, existing asphalt mixtures repeatedly appear rutting phenomenon (Rutting) on ​​the road surface in summer, loosening phenomenon (Ravelling) caused by plastic deformation, and oil bleeding phenomenon (Bleeding) caused by the increase of road load, etc. This leads to cracks, potholes, and aggregate peeling on the road, which reduces the durability of the road. On average, it needs to be re-paved and maintained after 4-5 years. With the increase of traffic volume, the increase of axle load and the channeliz...

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