Cold-patch asphalt modified liquid and production method thereof

Abstract

The invention provides a cold-patch asphalt modified liquid and a production method thereof. The cold-patch asphalt modified liquid comprises the following components by weight: 5-8% of one or a mixture of butadiene styrene rubber (BSR) and styrene-butadiene-styrene (SBS), 3-5% of naphthenic oil, 3-5% of glycerol, 3-5% of dibutyl ester, 0-3% of an anti-stripping agent and the balance of heavy diesel oil. The production method of the asphalt modified liquid comprises the following steps: (1) screening an asphalt modifying agent through an oscillating screen with sieve pores of 0.6cm, and clearing away caking; (2) adding the asphalt modifying agent and the heavy diesel oil into a stirrer in proportion for stirring for 3-4 hours until the asphalt modifying agent is completely and uniformly dispersed in the diesel oil and turned into a light brown paste; and (3) adding the naphthenic oil, the glycerol, the dibutyl ester and the anti-stripping agent in proportion, together stirring the added components for 30-40 minutes, and then storing for later use. The cold-patch asphalt modified liquid has the advantages of long storage period, good operability, simple production process, abundant material resource, environment friendly production, convenience in use, and the like.

Description

technical field [0001] The invention relates to the technical field of pavement construction materials, in particular to a cold patch asphalt modification fluid for quickly repairing asphalt pavement and a production method thereof. Background technique [0002] With the rapid development of my country's transportation industry, the traffic volume on expressways has increased year by year, and the number of heavy-duty vehicles has continued to increase. Coupled with the influence of the hot and humid climate in the south, the asphalt pavement is frequently damaged. If the effective measures are not taken in time to repair, the road surface disease will continue to deteriorate and cause a large area of ​​loose and pothole disease, which will not only seriously affect the quality and safety of driving, but also increase maintenance costs and shorten the maintenance cycle. For this reason, prior art often adopts a kind of cold construction asphalt mixture to repair, and it has c...

AI Technical Summary

Problems solved by technology

However, the cold construction asphalt mixture currently on the market is made by diluting viscous asphalt into liquid asphalt, that is, adding about 20% of different types of diluents to viscous asphalt, and its performance is not up to To meet the quality requirements, not only the storage period is short, the viscosity is lost prematurely, but also the operability is poor, the agglomeration is not easy to spread, and it cannot be compacted after use, which often leads to problems on the repaired road surface

Especially in the hot and humid climate in the south such as Guangdong, the repaired pits will soon be loose and damaged, seriously affecting the repair effect