Rapid hardener for viaduct pavement base and preparation method thereof

Abstract

A rapid hardening agent for a viaduct pavement base layer is prepared from, by mass, 5-20 parts of xylene, 2-6 parts of curing agent, 2-6 parts of decalin acid cobalt, 0.1-3 parts of crosslinking agent, 20-50 parts of epoxy resin, 2-5 parts of promoter, 1-3 parts of butanol, 0.5-3 parts of toughening agent, 0.2-4 parts of stabilizing agent and 1-4 parts of compatibilizer. By adding the xylene, the curing agent and the toughening agent, the viscosity of asphalt is improved, and the asphalt hardening speed in a high-temperature environment is effectively improved by being matched with the decalin acid cobalt. The epoxy resin reacts with the curing agent to form an insoluble polymer with a three-dimensional mesh structure, and the three-dimensional has good physical and chemical properties, small deforming shrinking percentage rate, high harness and good flexibility.

Description

technical field [0001] The invention relates to the technical field of pavement hardening preparation, in particular to a rapid hardener for viaduct pavement base and a preparation method thereof. Background technique [0002] With the rapid development of cities and the rapid increase of car ownership, the existing ground traffic is becoming more and more overwhelmed. Viaducts provide convenience and speed for busy urban traffic, and are the best way to reduce urban ground traffic pressure, such as roads Far vehicles hope to find the viaduct on the approach bridge as soon as possible and drive on the viaduct, avoiding the ground traffic situation of congestion, to reduce the time of traffic lights such as crossroads. The construction of viaducts in urban areas not only puts forward higher requirements on the quality of asphalt pavement, but also puts forward strict requirements on the construction period; and the orthotropic panels of long-span bridges are more complicated ...

AI Technical Summary

Problems solved by technology

The construction of viaducts in urban areas not only puts forward higher requirements on the quality of asphalt pavement, but also puts forward strict requirements on the construction period; and the orthotropic panels of long-span bridges are more complicated due to their stress and deformation. The road performance requirements of the pavement layer are also high, and it is difficult to meet the requirements with general heavy traffic asphalt. More and more high-grade pavements and steel bridge deck pavements use polymer modified asphalt. The commonly used polymer Modified asphalt is blended with asphalt and thermoplastic resin or rubber, and the modifier is dispersed into granular, filamentary, network-like forms to achieve stiffening and toughening of the base asphalt, but the hardening speed of the viaduct pavement base determines the construction progress of construction period