Thermoplastic high-viscosity high-elasticity asphalt modifier for pavement on steel bridge surface and preparation method thereof

Abstract

The invention discloses thermoplastic high-viscosity high-elasticity asphalt modifier for pavement on the steel bridge surface and a preparation method thereof. The thermoplastic high-viscosity high-elasticity asphalt modifier comprises, by weight, 40-60% of a thermoplastic elastomer, 2-6% of PE, 15-35% of petroleum resin, 0-25% of a diatomite roasted product, 5-20% of furfural extract oil and 0-6% of an adjuvant. The preparation method comprises adding the thermoplastic elastomer, PE, petroleum resin, diatomite roasted product, furfural extract oil and adjuvant into a spiral extruder and carrying out drawing and granulation under the condition of an extrusion temperature of 120-200 DEG C. The modifier improves asphalt fluidity, high temperature performances and high-viscosity and high-elasticity performances. The preparation method has simple processes, does not need harsh reaction conditions and is convenient for production.

Description

technical field [0001] The invention belongs to the field of polymer composite materials, and in particular relates to a thermoplastic high-viscosity and high-elasticity asphalt modifier used for steel bridge deck pavement. Background technique [0002] Since the steel bridge deck is welded and fixed on the orthotropic structural beams and longitudinal ribs, and the steel deck system is flexible and easy to bend, the deformation and stress characteristics under the action of vehicle load and temperature load are the same as Ordinary cement concrete bridges have a very obvious difference, [0003] In different parts of the same bridge, the deformation and force are also very different [0004] Therefore, due to the harsher service conditions of steel bridge deck pavement, the degree of performance requirements for steel bridge deck pavement is the same as that of ordinary pavement pavement and [0005] Cement concrete bridge deck pavements are quite different. Mainly manif...

AI Technical Summary

Problems solved by technology

[0017] The object of the invention is a thermoplastic high-viscosity and high-elasticity asphalt modifier for steel bridge deck pavement, which solves the problem of poor high temperature resistance and cracking caused by existing asphalt used for steel bridge deck pavement

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