Mix Proportion Design of Asphalt Mastic Crushed Stone Mixture(SMA-10)
Asphalt mastic crushed stone mixture has been widely used in high-grade highway engineering due to its good durability,fatigue resistance,and high-temperature stability.However,its design is cumbersome.In order to better utilize the dense skeleton structure,this article adds fibers to improve the reinforcement effect of the skeleton under the characteristics of three more and few gradation design.The results show that:through the three stages of the SMA-10 mix ratio design,The optimal asphalt dosage of SMA-10 asphalt mixture is 6.1％,Lignin fiber(mass％of asphalt mixture)0.3％.Based on actual engineering,the SMA-10 mixture prepared has a high temperature stability of 4 195 times/mm,the water stability of over 85％,and the freeze-thaw splitting strength greater than 80％,all of which meet the requirements of road engineering.The goal of optimizing the mix ratio has been achieved,which has practical significance for improving the performance and service life of asphalt pavement.
万方数据
维普
