Road or bridge deck pavement durable sealing layer and preparation method thereof

Abstract

The invention discloses a road or bridge deck pavement durable sealing layer and a preparation method thereof. The road or bridge deck pavement durable sealing layer is prepared by the following raw materials by weight: 100 parts of mineral aggregate, 10-25 parts of grafted ultra-high molecular weight polyethylene-waterborne polyurethane, 20-30 parts of emulsified asphalt, wherein the grafted ultra-high molecular weight polyethylene-waterborne polyurethane is prepared by the following raw materials by weight: 100 parts of ultra-high molecular weight polyethylene, 10-25 parts of waterborne polyurethane, 2.5-4.5 parts of an initiator, and the emulsified asphalt is prepared by the following raw materials by weight: 100 parts of water, 40-70 parts of asphalt, 2-5 parts of an emulgator, and 3-4parts of a stabilizer. The prepared modified emulsified asphalt has the good shock resistance, high adhesive property and good waterproof property, and other pavement performance is good. In addition, the waterborne polyurethane used by the composite material is superior to the solvent-type polyurethane obviously, so the composite material can be dispersed in the emulsified asphalt well and is not easily separated according to the hydrophilic property of the composite material.

Description

technical field [0001] The invention belongs to the field of road materials, and relates to a durable sealing layer for road or bridge deck, in particular to a durable sealing layer for road or bridge deck and a preparation method thereof. Background technique [0002] At present, most of the early diseases of pavement and bridge decks in my country are caused by poor interlayer contact or substandard performance of interlayer materials. For example, during the bridge deck paving process, there are generally poor interlayer adhesion and poor waterproof performance between the pavement layer and the bridge deck. The problem is that the former causes the surface layer to cause diseases such as pushing, crowding, waves, rutting, and even bridge deck tearing and peeling, while the latter causes water infiltration to cause looseness, potholes, and even direct corrosion of the beam body; semi-rigid base layers are common on asphalt pavements The problem of poor bonding performance, ...

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Problems solved by technology

[0003] Aiming at the defects and deficiencies in the prior art, the present invention provides a durable sealing layer for pavement or bridge deck and its preparation method, which overcomes the problems of bonding performance between base and asphalt pavement, crack resistance and The defect of poor waterproof performance

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