Ultrathin wearing layer normal-temperature asphalt modifier and preparation method thereof

Abstract

The invention discloses an ultrathin wearing layer normal-temperature asphalt modifier and a preparation method thereof. The ultrathin wearing layer normal-temperature asphalt modifier is prepared from the following raw materials in parts by mass: 55-65 parts of cyclooctane, 30-35 parts of modified epoxy resin glue, 0.6-1 part of a dispersant and 5-10 parts of a coupling agent. The preparation method comprises the following steps: putting the cyclooctane, the modified epoxy resin glue and the dispersant into a stirring kettle according to a ratio, heating to 100+ / -5 DEG C, mixing, and uniformly stirring for 4-6 hours; further putting a coupling agent into the materials in the stirring kettle, and continuously stirring for 4-6 hours, thereby obtaining the product. By adopting the modifier,the rotary viscosity of asphalt at 60 DEG C can be reduced to 2.2-3.0Pa*s, and a mixed asphalt material can be spread for 1.0-2.0cm by using a common spreading machine within 50-60 DEG C; the construction temperature can be greatly reduced when being compared with a conventional construction temperature, and both the construction cost is reduced and the construction quality is ensured.

Description

technical field [0001] The invention relates to a road engineering material, in particular to a normal-temperature asphalt modifier for an ultra-thin wearing layer and a preparation method thereof. Background technique [0002] The ultra-thin wearing layer is a hot-mix asphalt mixture with a thickness of 1.0cm to 2.0cm, which can solve the cracks, potholes, ruts (less than 15mm) and other diseases on the road surface that occur with the driving of vehicles and natural aging, and improve the water seepage of the road surface It is mainly used for the preventive maintenance overlay of asphalt and cement concrete pavement, as well as the surface wear layer of newly built or expanded road pavement. [0003] The asphalt currently used for the ultra-thin wear layer is a high-viscosity material, which usually needs to be mixed at a temperature of 150°C or higher, and requires special heat-resistant equipment and corresponding working conditions. However, the prepared wear layer It...

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Problems solved by technology

[0003] The asphalt currently used for the ultra-thin wear layer is a high-viscosity material, which usually needs to be mixed at a temperature of 150°C or higher, and requires special heat-resistant equipment and corresponding working conditions. However, the prepared wear layer It is impossible to achieve good wear resistance under the premise of ultra-thin laying, and the construction quality is not easy to control; and the thickness of the ultra-thin wear layer is only 1.0cm to 2.0cm, and the temperature of the aggregate is easily lost during the construction process, resulting in ultra-thin Decreased adhesion between wearing course and underlying pavement

The existing asphalt modifiers (such as asphalt emulsifiers) in the current project are incomplete in variety, with low active ingredients, unstable product quality, and poor adaptability to various asphalts. Therefore, it is necessary to develop a Modifier for Realizing Ultra-thin Wearing Layer of Asphalt

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