Study On Improving The Acidic Stone Material And Bitumen Adhesion Technology Of Qinghai District

The adhesion of bitumen with stone aggregate directive influences the using of bituminous pavement quality and durability.To be effective and rational to use acid produced of Qinghai stone, so as to meet the water-damage high-grade bitumen pavement surface layer or wear layer material, and thus reach the purposes of use local materials and reduce the cost of engineering, Papers studied on adhesion of bitumen with acid stone that the Qinghai region wide distribution. And studied the adhesion levels of sandstone,granite with added different anti-stripping, and compared with the limestone. Had determined the Carloe amine and the PA-1 are suitable anti-stripping for the Qinghai area improvement adhesion of acidic stone material with the bitumen. And had determined the quantity reasonably of anti-stripping mixes. This topic has also carried on the bituminous mixture composition design and the performance confirmation, The result indicated that, after mixes adds the optimal anti-stripping agent, the bituminous mixture has the good anti-water harm performance.The paper has also conducted the research on bituminous mixture water stability that after the cement replace partial powdered, indicated the added cement, may improve the blend anti-water harm ability, also can enhance the high temperature stability.