Use method of precise blending device for asphalt pavement reclaimed material

Abstract

The invention discloses a use method of a precise blending device for an asphalt pavement reclaimed material and belongs to the field of road engineering machinery. The method comprises the following steps: calculating a target amount of the reclaimed material according to a use proportion of a reclaimed asphalt mixture, opening a weighing door below a transition hopper, closing the weighing door after required the material enters a weighing hopper, calculating precise weight of the reclaimed material actually required according to the weight of actually weighed aggregate and powder in a raw station after weighing the aggregate and the powder in the raw station, discharging the required weight of the reclaimed material from a discharge door by a reduced metering manner in the weighing hopper and accomplishing the whole weighing process, wherein the weight of the material metered for the first time is greater than the target weight. According to the method, the weighing hopper in the precise blending device carries out secondary weighing of the reclaimed material to ensure a more accurate weighing result, the proportion precision of the reclaimed material, the aggregate and the powder is improved, and the property stability of the reclaimed asphalt mixture is ensured truly.

Description

technical field [0001] The invention relates to a method for using a weighing device, in particular to a method for using a device for accurately blending recycled asphalt pavement materials, and belongs to the field of road construction machinery. Background technique [0002] At present, the development of expressways in my country has gradually entered the maintenance stage. In the process of pavement maintenance, a large amount of recycled materials are often milled and planed. After recycling, screening and crushing, the recycled materials are properly matched with some new materials (regenerants). After reprocessing and production, the recycled asphalt mixture that meets the road performance requirements can be obtained, which can be effectively used in the construction of pavement surface and base layer, so the regeneration technology of asphalt pavement is of great significance. [0003] However, when the existing recycled materials are weighed and blended to prepare ...

AI Technical Summary

Problems solved by technology

[0003] However, when the existing recycled materials are weighed and blended to prepare the recycled mixture, the metering method is often used once, that is, the recycled material is directly used for blending the recycled mixture after only one weighing, and the weighing accuracy is low, which is easy to cause The ratio error of recycled materials, aggregates and powders is relatively large, resulting in unstable performance of recycled asphalt mixture, poor low temperature performance of mixture, poor resistance to water damage or poor fatigue resistance

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