High-performance waterborne epoxy modified emulsified asphalt micro-surfacing material and preparation method thereof

Abstract

The invention discloses a high-performance water-based epoxy modified emulsified asphalt micro-surfacing material and a preparation method thereof, and belongs to the technical field of pavement micro-surfacing materials, the high-performance water-based epoxy modified emulsified asphalt micro-surfacing material comprises the following raw materials: mineral aggregate, water-based epoxy modified emulsified asphalt, cement, aluminum dihydrogen phosphate and water according to a weight ratio of 100: (8-14): (2-4): (3-6): (5-14); the waterborne epoxy modified emulsified asphalt comprises nonionic waterborne epoxy resin emulsion, a nonionic vinylamine addition curing agent, SBR (styrene butadiene rubber), modified white carbon black and cationic emulsified asphalt according to the weight ratio of (2-6): (2-6): (2-5): (4-8): 100. The preparation method of the micro-surfacing material comprises the following steps: mixing the nonionic vinylamine addition curing agent, the SBR styrene-butadiene latex, the modified white carbon black, the cationic emulsified asphalt and the nonionic waterborne epoxy emulsion, adding the mineral aggregate, the aluminum dihydrogen phosphate and the cement, and uniformly mixing to obtain the micro-surfacing material. The obtained micro-surfacing material has excellent long-term wear resistance, cohesiveness with an asphalt concrete base surface and rutting resistance.

Description

technical field [0001] The invention belongs to the technical field of pavement micro-surface materials, in particular to a high-performance water-based epoxy modified emulsified asphalt micro-surface material and a preparation method thereof. Background technique [0002] Micro-surfacing is a special technology applied to the preventive maintenance of high-grade pavements such as highways, urban trunk lines and airport roads. It is composed of additives and has the technical characteristics of waterproof, anti-skid and surface function recovery. It is one of the most commonly used preventive maintenance techniques in my country. [0003] Although the current micro-surface application technology is relatively mature and has been widely used in many physical projects, according to the current application and research situation, there are still some problems in the micro-surface pavement: (1) The service life of conventional micro-surface In about 2-3 years, the main problem i...

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Problems solved by technology

[0003] Although the application technology of micro-surfacing is relatively mature and has been widely used in many physical projects, according to the current application and research situation, there are still some problems in the road surface of micro-surfacing: (1) The service life of conventional micro-surfacing In about 2-3 years, the main problem is that it is prone to grain loss and peeling, the adhesion of the mixture at the micro-surface, and the adhesion between the micro-surface and the original road surface need to be improved; (2), when the summer is hot and hot When the regional micro-surfacing is used for road rut filling, it is easy to reappear rutting disease, and the existing micro-surfacing has poor anti-rutting ability; The evaluation methods and technical indicators at the micro-surfacing cannot fully investigate the road performance and durability of the micro-surfacing mixture, which affects its further development and application.

[0008] However, the anti-rutting performance of the micro-surfacing materials provided by the above-mentioned patents or documents, the adhesion performance with the substrate, and the long-term wear resistance performance are not much different from the micro-surfacing materials currently on the market, and they all need to be optimized.

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