Reserch On The Performance,Test And Construction Technics Of SMA Mixture

It brought obvious early damage to the asphalt pavement because of traffic density, speed faster, and with large vehicles and overloading of heavy vehicles increased significantly in express way. These brought a higher demand to assorted scope,slip-resistance,heat-resistance and low temperature crack resistance of asphalt pavement. Among this, the top layer is the most direct factors that impacts on pavement quality, is the most important factor, to improve the quality of road works, the construction quality of the upper layer must be ensureThis paper study comparatively the pavement performance of SMA mixture and consecutive graded mixture materials, Papers discussed several key factors that ensure the SMA upper layer quality of express way from the upper layer of asphalt concrete assorted design and construction issues. The pavement performance of SMA13 mixture can be completely comparable to AK13A mixture. laboratory experiments and actual project. Meanwhile, it made a reasonable proposal through the SMA mixture specimen using different density measurement method, the determination of how the indoor specimen volume and realities of the road, Finally, combination of SMA mixture with the design and production control process, discussed the SMA mixture Deck Pavement Engineering Construction Technology in detail.