Pre-demulsification microwave medium temperature induction type high-concentration modified emulsified asphalt thick slurry and its preparation method

Abstract

The invention relates to a pre-demulsification microwave intermediate temperature induction type high-consistency modified emulsified asphalt thick sizing agent and a preparation method thereof. By means of a composite emulsifier of two kinds of slow breaking and fast setting type cationic emulsifiers of tetra-alkyl ammonium hydroxide and acylamino amine, and two kinds of nonionic emulsifiers of polyethylene glycol and polyols, ferric oxide modified polyester resin latex, a temperature mixing agent, modified latex, 80 DEG C water and 140 DEG C matrix asphalt, microwave intermediate temperature induction type high-consistency modified emulsified asphalt is produced through an emulsification machine or a colloid mill, aggregate with the particle size smaller than 0.075 mm serves as mineral powder, the aggregate is screened according to the mass matching requirement, the screened-out aggregate serves aggregate used for preparing the microwave intermediate temperature induction type high-consistency modified emulsified asphalt thick sizing agent in a mixing manner, and the aggregate is mixed and placed into a microwave heating box to be heated. The microwave intermediate temperature induction type high-consistency modified emulsified asphalt is adopted for the pre-demulsification microwave intermediate temperature induction type high-consistency modified emulsified asphalt thick sizing agent, it is guaranteed that on-site cold mixing is convenient, and it can also be guaranteed that the pavement performance of a mixture can completely reach the performance requirement of a hot mixed mixture.

Description

technical field [0001] The invention relates to an asphalt material used for repairing and maintaining asphalt pavement, in particular to a pre-demulsified microwave mid-temperature induction type high-concentration modified emulsified asphalt thick slurry and a preparation method thereof. Background technique [0002] For asphalt pavements of various grades of highways, urban roads, concrete bridge decks, tunnel pavements, airport pavements, etc., water damage is a relatively typical form of disease, mainly due to the temperature segregation of the mixture during construction. Partial seepage of pavement caused by segregation and insufficient compaction. In addition, when there is a vehicle load passing through, the strong dynamic water pressure will repeatedly scour the asphalt mixture and the surface of the semi-rigid base, and the pumping phenomenon will first occur, and then it will further develop into a pit. [0003] At present, there are three main maintenance metho...

AI Technical Summary

Problems solved by technology

In this way, the potholes cannot be repaired in time, and there is a savings type pothole repair.

Even if some contractors bought a large amount of hot mix in advance, it was hard to use up on the same day and a large amount of agglomeration was caused in the stock yard. Before repairing on the road, half of the labor was spent on planing and loading the material, otherwise it would be difficult to use the heating car for heating. , which can reduce the construction efficiency by more than 50%, which will not be able to repair the pits with high construction costs in time

Thirdly, MOH composite organic hydraulic materials are used for repair, but because the MOH material uses traditional emulsified asphalt, after rolling, it only depends on natural conditions for water analysis, coagulation, and molding, and it takes 3-4 hours to open to traffic. This is unacceptable to the owner for minor repairs and maintenance of asphalt pavement

Images