Rubber and plastic waterproof bonding modification asphalt mastic and preparation method of rubber and plastic waterproof bonding modification asphalt mastic

Abstract

The invention belongs to the field of bridge deck pavement, and particularly relates to hot melting rubber and plastic waterproof bonding modification asphalt mastic used for a large-scale steel box bridge waterproof bonding layer and a preparation method of the rubber and plastic waterproof bonding modification asphalt mastic. The rubber and plastic waterproof bonding modification asphalt mastic consists of the following raw materials in parts by weight: 10 to 20 parts of waste tire rubber powder, 5 to 10 parts of thermoplastic resin, 1 to 5 parts of thermoplastic elastic bodies, 2 to 10 parts of octylene-ethylene copolymers, 2 to 10 parts of terpene resin, 5 to 15 parts of tall oil polyamine carboxylate, 2 to 5 parts of styrene butadiene rubber and 20 to 70 parts of petroleum asphalt. The modification asphalt mastic provided by the invention has the waterproof performance, so the water resistance is realized, the asphalt mastic can still be firmly bonded with the steel bridge desk even when obvious water exists, the asphalt mastic is applicable to waterproof bonding layer and transition layer construction in the steel box bridge asphalt mixture pavement, the waterproof and anticorrosion effects are realized on the bridge deck, the protection effect is realized, a paving layer is carried, and the bonding effect is realized.

Description

technical field [0001] The invention belongs to the field of bridge deck pavement, and in particular relates to a hot-melt rubber-plasticized modified asphalt adhesive used for the waterproof bonding layer of large-scale steel box bridges and a preparation method thereof. Background technique [0002] As an important part of the bridge, the bridge deck pavement should be well bonded to the bridge structure, and have the ability to transfer load, participate in force, connect the main girder laterally, resist load impact and fatigue, waterproof and adapt to temperature changes. The quality of the layer directly determines the safety, comfort, durability and economic and social benefits of investment on the bridge deck. The mainstream bridge deck pavement technology usually lays a waterproof bonding layer between the pavement layer and the bridge structure to protect the bridge body from water vapor corrosion; at the same time, the pavement layer and the bridge body are bonded...

AI Technical Summary

Problems solved by technology

In the United States and Canada, the cement concrete bridge deck pavement waterproof bonding layer is mainly hot-spread rubber asphalt waterproof membrane. This material has excellent fatigue performance, but as a waterproof bonding layer for large steel box bridge decks, its high temperature The stability is not enough, especially in the summer high temperature season, the temperature of the steel box bridge deck can reach about 80 ℃, if the rubber asphalt is used alone as the waterproof membrane, the waterproof membrane is easily softened to form a sliding layer, causing rutting and shifting of the pavement layer question

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