A kind of asphalt viscosity reducer and its preparation method and application

Abstract

The invention discloses an asphalt viscosity reducer as well as its preparation method and application. The asphalt viscosity reducer of the present invention comprises the following components by weight percentage: foaming agent 4-8%, initiator 5-10%, solvent 8-15%, anti-stripping agent 4-8%, dispersant 5% ‑10%, anti-aging agent 55‑70%. The preparation method of the asphalt viscosity reducer comprises the following steps: S1. Preheating the anti-aging agent; S2. Adding the preheated anti-aging agent, dispersant, anti-stripping agent, solvent, initiator, and foaming agent in sequence In the shear emulsifier, shear and stir evenly to obtain the asphalt viscosity reducer. The application of the asphalt viscosity reducer, the application is: the application of the asphalt viscosity reducer in modified asphalt. The application of the asphalt viscosity reducer in the modified asphalt comprises the following steps: S01. preheating the modified asphalt; S02. adding the asphalt viscosity reducer to the preheated modified asphalt, shearing, stirring evenly, and Developed to obtain viscosity-reduced modified asphalt.

Description

technical field [0001] The invention relates to the technical field of road engineering, in particular to an asphalt viscosity reducer and its preparation method and application. Background technique [0002] In recent years, with the increase in traffic volume, the number of heavy-duty vehicles has increased, and the traffic volume has continued to rise, the proportion of modified asphalt used has continued to rise, including the application of special asphalt with high modulus and high viscosity. As a result, the mixing and paving temperature of the asphalt mixture is getting higher and higher, generally requiring 160-180°C, which consumes energy and produces a large amount of waste gas. Therefore, the study of new asphalt viscosity reduction technology, lowering mixing temperature, reducing energy consumption and waste gas emissions has a very good potential market value and is in line with the technological development trend. [0003] The Chinese invention patent with t...

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Problems solved by technology

[0005] The Chinese invention patent with the patent number CN104559234B discloses an asphalt viscosity reducer and asphalt composition, which is composed of polyethylene wax, polyacrylate, fatty alcohol polyoxyethylene ether, carolamine, etc., and its composition is complex

At present, there is still little research on the viscosity reduction technology of modified asphalt

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