Asphalt mixture modifier and application method thereof

Abstract

The invention relates to an asphalt mixture modifier and an application method thereof; the modifier comprises the following components by mass percentage: more than or equal to 50 percent and less than 100 percent of plastics or recycled waste plastics, and more than o and less than 50 percent of SBS, recycled rubber tire powder, fiber, asphalt or waste oil. The method comprises the following steps: the modifier and mineral aggregate are added into a mixing pot of a mixing plant to be mixed, the temperature of the mineral aggregate is no lower than 170DEG C, and the mixing time is shorter than 10s; and then the asphalt is sprayed in to be mixed when the temperature is no lower than 140DEG C, the mixing time is continued for 35 to 60s, and modified asphalt mixture is prepared. The plastics or the recycled waste plastics in the modifier can be compatible and mixed with the asphalt, and improve various application performance of the asphalt mixture and the overall road performance of a road surface. The method continuously mixes the modifier and the mineral aggregate and the asphalt so that the construction is convenient and the cost is low, simultaneously reduces the aging of the asphalt, saves energy, utilizes the recycled material, and meets the environment protection requirements in a plurality of aspects.

Description

technical field [0001] The invention relates to the field of building materials, in particular to an asphalt mixture modifier and an application method thereof. Background technique [0002] Since the 1990s, in order to improve the performance of asphalt and improve the performance of asphalt pavement, it is common practice to mix ordinary asphalt with asphalt modification additives to modify ordinary asphalt. Therefore, this intermediate modification method increases the modification process compared with the traditional asphalt mixture. Usually, the ordinary asphalt is mixed with the asphalt modification additive, and then the modified asphalt is mixed with the mineral material to make a modified asphalt mixture. materials, and then applied to the pavement. [0003] In the above-mentioned modification process, special high-energy-consuming equipment and process conditions are usually required. According to the current modified asphalt processing and production technology,...

AI Technical Summary

Problems solved by technology

Therefore, although the performance of the existing asphalt is better than that of the traditional asphalt, the cost of manufacturing and transportation is higher than that of the previous asphalt.

Moreover, during the production and processing of modified asphalt, it is necessary to use strong shear equipment to prepare modified asphalt, which will also cause environmental pollution during the modification process, which is not conducive to environmental protection requirements