Mix Design of Recycled Asphalt Mixture
The mixing ratio of hot mix plant was designed by Marshall method through three stages: target mix design, production mix design and production mix verification. Through the above three stages to determine the recovery of asphalt pavement materials (RAP) blending ratio, the variety of new materials and ratio, aggregate gradation and the best amount of asphalt. In this case,[url=http://smallroadroller.com/]Small Road Roller - Shanghai Doan Machinery Technology Co.,Ltd[/url]

Recycled asphalt pavement material (RAP) blending ratio: According to the engineering needs and recovery of asphalt pavement materials (RAP) characteristics of the general blending ratio of 15% to 30%. In this case,
The new asphalt index and dosage: According to the calculation of the ratio of new and old materials mixed viscosity as the viscosity of the new asphalt, if the calculation of the new asphalt is too high, the market supply is difficult; Recycling asphalt pavement material (RAP) blending ratio greater than 30 % Or asphalt content is high, you can choose to use renewable agent. When the proportion of reclaimed asphalt pavement material (RAP) is less than 20%, the total amount of asphalt used in the hot recycled mixture can be determined according to the original mix design test. More than 20% can be calculated according to the specifications of the amount of asphalt. Recycled asphalt pavement materials (RAP) with different gradations shall be separately calculated and reclaimed. In this case,
The transport, paving and rolling of the recycled asphalt mixture is basically the same as that of ordinary asphalt mixture, but special attention should be paid to the following two points:
Transportation of the mixture of cars in the car sidewall and the bottom of the insulation modification (in the head, tail, top, both sides of the installation of thermal insulation layer), the top cover after loading triple insulation facilities. Mixture transported to the site site, cooling will not exceed 6 ℃. In this case,
Paving to prevent excessive cooling and thus affect the workability of the mixture, making the surface of the mixture viscosity is not conducive to paving construction, so the mixture at high temperatures, it should be rolled in time. Paving materials to keep the appearance of coverage when the car style, full coverage until the discharge is completed, with good insulation effect.
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