A kind of warm mix asphalt additive and preparation method thereof

Abstract

A warm-mix asphalt additive machine preparation method, the additive is formed by reacting the following components in parts by weight: 4-15 parts of alkoxysilane, 1-8 parts of polyether, 0-1 part of melamine formaldehyde resin, and 0 parts of acid catalyst -1 part, 0-1 part of alkali catalyst, 2-10 parts of deionized water, 30-100 parts of solvent; the preparation method comprises the following steps: (1) adding a quantitative amount of solvent and Alkoxysilane, heated to 80°C; (2) Add a mixture of acid catalyst, base catalyst, and deionized water, and react at a constant temperature of 80°C for 90 minutes; (3) Heat up to 100°C, condense and reflux for 120 minutes, and collect about 55ml of distillate; ( 4) Add an acid catalyst and a certain amount of polyether into the flask, heat up the esterification reaction for 180 minutes; (5) evacuate, condense and reflux for 30 minutes, cool down to room temperature, add a certain amount of melamine formaldehyde resin and stir evenly, add an appropriate amount of alkali catalyst to adjust the pH = 8 or so, the finished product is obtained.

Description

technical field [0001] The invention relates to a warm-mix asphalt additive and a preparation method thereof, belonging to the technical field of highway pavement construction. Background technique [0002] At present, the asphalt mixture used in the construction of highway pavement is usually carried out in two forms: hot mix and cold mix. Hot mix asphalt mixture road construction technology is widely used in road construction due to its excellent performance, and after decades of development, the technology has been quite mature. However, problems such as thermal aging, high energy consumption and excessive emission of harmful gases will occur in the process of mixing, transportation and paving of hot-mix asphalt mixture. The existence of these problems limits the comprehensive promotion and application of hot-mix asphalt mixture technology. , and arouse the strong attention of various countries to its application. [0003] The cold-mix asphalt mixture process uses e...

AI Technical Summary

Problems solved by technology

However, problems such as thermal aging, high energy consumption and excessive emission of harmful gases will occur in the process of mixing, transportation and paving of hot-mix asphalt mixture. The existence of these problems limits the comprehensive promotion and application of hot-mix asphalt mixture technology. , and has drawn strong attention from countries to its application

[0003] The cold-mix asphalt mixture process uses emulsified asphalt and mixes it with stone materials at room temperature to obtain asphalt mixture. The pavement built by rolling and rolling has poor road performance and cannot be used for large-scale pavement paving of the entire road section. It can only be used for pavement repair, etc.

[0004] Facing the existence of the above-mentioned problems, there have been some warm-mix asphalt technology, but they are not mature enough, and various countries are still committed to research and laboratory trials in this area, in order to obtain a kind of technology that can better replace the existing one. There are hot mix or cold mix asphalt mixture process