Ultraviolet-resistant bituminous pavement crack filling glue and preparation method thereof

Abstract

The invention provides ultraviolet-resistant bituminous pavement crack filling glue and a preparation method thereof. The crack filling glue is prepared from, by weight, 100 parts of matrix asphalt, 2-4 parts of SBS modifier, 8-12 parts of rubber powder, 2-9 parts of dibutyl phthalate, 0.5-1.5 parts of polyphosphoric acid and 1-3 parts of carbon black. The ultraviolet-resistant bituminous pavement crack filling glue has the advantages that polyphosphoric acid is used for replacing part of traditional SBS, and due to the fact that the price of polyphosphoric acid is far lower than that of SBS, on the premise that the high temperature performance of the crack filling crack is kept unchanged or is slightly improved, the cost of the crack filling glue is effectively reduced; the carbon black capable of absorbing ultraviolet rays is added to the crack filling glue, the ultraviolet aging resisting capacity of the crack filling glue can be effectively improved, and the stability of the crack filling glue can be improved; the adopted rubber powder is rubber powder obtained after microwave activation, the viscosity of the prepared crack filling glue is reduced, the low temperature deformation capacity of the crack filling glue is improved, and the crack filling glue is prevented from low temperature brittle failure.

Description

technical field [0001] The invention belongs to the technical field of asphalt pavement maintenance, and in particular relates to an ultraviolet-resistant asphalt pavement crack filling glue and a preparation method thereof. Background technique [0002] Pavement cracks are the most common form of road damage, and injecting joint glue into pavement cracks is the most practical way to treat pavement cracks. [0003] At present, there are many kinds of asphalt-based joint-filling adhesives on the market, some of which are tested according to the existing "Pavement Rubber Asphalt Joint-filling Adhesive" (JT / T740-2009), and the other part is based on asphalt Material performance index testing. [0004] However, the inventor found in the process of realizing the present invention that the existing caulking glue has at least the following problems: [0005] (1) During the on-site use of the joint glue, especially in the high-altitude and strong ultraviolet areas in the west, the...

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Problems solved by technology

[0005] (1) During the on-site use of the joint glue, especially in the high-altitude and strong ultraviolet areas in the west, the aromatic components in the asphalt component are easily aged by ultraviolet light, which makes the joint glue harden as a whole, and the joint glue i

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