Adjusting method for gradation of cold-recycling mixture before and after compacting

The invention discloses an adjusting method for gradation of a cold-recycling mixture before and after compacting. The adjusting method comprises the specified steps: carrying out superposition on the target gradation of the cold-recycling mixture and the gradation change in the compaction process, and carrying out correction on the target gradation. By adoption of the method for considering the corrected gradation, the influence of the gradation change of the cold-recycling mixture on the construction quality can be reduced as possible. The adjusting method disclosed by the invention has the advantages that the requirement of a compacted mixture can be met; by adoption of corresponding increase of the content of coarse aggregates and reduction of the content of fine aggregates, the requirement of the gradation of an asphalt mixture is met; and the adjusting method is simple, convenient to use, low in cost and convenient to product and apply.