Waterborne epoxy modified second order reaction type waterproof binding material and preparation method

Abstract

The invention discloses a waterborne epoxy modified second order reaction type waterproof binding material and a preparation method. The preparation method comprises steps as follows: A, emulsified asphalt, waterborne epoxy resin, o-hydroxybenzoic acid, an emulsifier, a defoaming agent and a stabilizing agent are prepared at a mass ratio, the emulsified asphalt is added to a container firstly, pH is regulated by hydrochloric acid to 4.5-6.0, the materials are added while stirred, and manual stirring is continuously performed for 5-10 min until a mixed liquid is uniform; a high-speed shearing machine stator is put in the mixed liquid, the rotating speed is regulated to 200-400 revolutions / min, a switch is switched on, shearing is performed for 30-50 min, and a second order reaction type waterproof binding material component A is obtained; and B, the second order reaction type waterproof binding material component A and a second order reaction type waterproof binding material component B are prepared at a mass ratio of 100: (8-18) and are directly mixed in the container, the mixed materials are continuously and manually stirred for 5-10 min, poured into a proper container and uniformly arranged on an underlying layer in a coated manner, or the mixed materials are continuously stirred for 5-10 min and placed in an asphalt distribution truck for distribution.

Description

Technical field: [0001] The invention relates to a novel second-order reaction waterproof bonding material based on water-based epoxy modification and a preparation method thereof, which can be widely used in cement concrete pavement "white plus black" transformation waterproof bonding layer, cement concrete / steel box girder bridge deck Waterproof bonding layer and other building waterproofing works. technical background: [0002] Under the combined effects of channelized traffic and overrun / overloaded vehicles, the cement concrete pavement that was generally paved in the 1980s and 1990s has suffered extensive damage before reaching the 30-year design life, and has entered the stage of major and medium repairs ahead of schedule. On the other hand, compared with cement concrete pavement, with the improvement of asphalt quality (especially the quantitative production of various types of modified asphalt with excellent performance), asphalt pavement has gradually replaced cemen...

AI Technical Summary

Problems solved by technology

[0004] Looking at most of the second-order reaction waterproof bonding materials currently on the market, on the one hand, the common petroleum-based active materials added can only improve the flexibility of asphalt-based materials, and the so-called first-order reaction is mainly based on physical effects. It did not effectively bond with the upper and lower interface layers. On the other hand, the added solvent-based epoxy resin adhesive material has disadvantages such as high cost, heat treatment, and non-environmental protection (with volatile harmful substances).

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