抄録
After decades of experience in road construction, the highway experts have concluded that the major failures on road network of Pakistan are rutting and fatigue cracking. These failures are primarily due to the high temperatures and the prevalent overloading. To minimize these defects, highway engineers have to adopt new technologies instead of resorting to conventional dense graded asphalt mixtures. One of the technologies to address these problems is Stone Mastic Asphalt (SMA). SMA is a gap graded mixture, which provides durable pavements, exhibits high resistance to rutting caused by heavy truck traffic and proved to be extremely effective in combating early deterioration of the pavement. A test section was laid on a in-service segment of National Highway through a joint collaboration with National Highway Authority to evaluate the performance of cellulose based SMA on our road network on the basis of certain field and laboratory tests
