Cold filling asphalt mixture and preparation method thereof

Abstract

The invention provides a cold filling asphalt mixture, which is characterized by being prepared from 4 to 6 percent of SBS modifying agents, 12 to 15 percent of diluters, 3 to 4 percent of petroleum resin, 1.5 to 2 percent of polymerization inhibitors and the balance No.90 grade asphalt. The asphalt is heated to 160 to 170 DEG C; the SBS modifying agents are added; a high-speed asphalt shearing instrument is used for stirring for 40 minutes; the diluters, the resin and the polymerization inhibitors are stirred for 20 minutes; then, the mixture is poured into hot asphalt being 160 to 170 DEG C; the stirring is performed for 20 minutes; the mixture is put into a 160-DEG C constant temperature box for developing for at least 0.5h; the mineral aggregates are put into a baking oven being 105 DEG C + / - 5 DEG C for at least 4h to 6h to be dried to the constant weight; under the condition of the best asphalt consumption, the mixture is stirred according to a hot stirring asphalt mixture stirring method; the total mixing time is 3 minutes; the mixture is cooled through being put in an environment at the room temperature; after the stirring, the mixture is stored by using a packaging bag.

Description

technical field [0001] The invention belongs to the field of road engineering materials, and in particular relates to a cold-patch asphalt mixture and a preparation method thereof. Background technique [0002] In my country, hot-mix asphalt mixture is generally used for repairing pits and other diseases. The hot-repair method has the advantages of good repair quality, high durability, and the repaired road surface can withstand heavy-duty traffic. However, the hot-repair method is not suitable for Construction under humid, low temperature environment, and pollute the environment. However, the cold-patch asphalt mixture currently on the market has low initial strength, poor water stability, and short service life. Contents of the invention [0003] Aiming at the problems existing in the prior art, the present invention proposes a cold-patch asphalt mixture and a preparation method thereof. [0004] The technical solution adopted in the present invention is: a cold-patched...

AI Technical Summary

Problems solved by technology

[0002] In my country, hot-mix asphalt mixture is generally used for repairing pits and other diseases. The hot-repair method has the advantages of good repair quality, high durability, and the repaired road surface can withstand heavy-duty traffic. However, the hot-repair method is not suitable for Construction under humid and low temperature environment, and pollute the environment

However, the cold-patch asphalt mixture currently on the market has low initial strength, poor water stability, and short service life.