Hot in-plant reclaimed asphalt mixture

The invention relates to a hot in-plant reclaimed asphalt mixture. The mixture includes the following components by mass percent: 30 to 50 percent of milling materials, 44 to 67 percent of newly collected materials, 1.5 to 4 percent of mineral powder, 1.5 to 4 percent of new asphalt, and ARA regenerant which is 0 to 10 percent of the mass of the recycled asphalt contained in the milling materials.The processing method includes the following steps: (1) extraction and analysis of the milling materials; (2) asphalt performance test; (3) regenerant addition; (4) formation of mixture of the recycled asphalt; (5) Marshall test or rotary compacting test; and (6) mixture performance test. The proportion of milling material RAP reaches as high as 50 percent in the engineering application of the hot recycled asphalt mixture, the milling material RAP can be applied to a middle layer, and the proportion is higher than the proportions of other hot recycled mixtures by more than 20 percent. The mixture can be applied to various grades, such as the AC type, SUPERPAVE, and the like, and the RAP proportion can respectively reach 30 percent or even more than 50 percent. When the mixture is used forpaving a road surface, the road performance can respectively meet the requirements on performance of a newly proportioned asphalt mixture, and the high temperature performance is even superior to thenewly proportioned asphalt mixture. Therefore, the invention has obvious economic benefit.