Test raw materials are produced in Tianjin limestone, specifications for the 10 ~ 20mm, 5 ~ 10mm and 0 ~ 5mm machine sand and limestone powder four. There are also produced from Cangzhou 50 A grade oil asphalt. The relative density, apparent density, water absorption, sand equivalent, angularity, hydrophilicity and adhesion of coarse aggregate, fine aggregate and filler were tested. Test results show that all technical indicators are in line with "Highway Asphalt Pavement Construction Technical Specifications" (JTG F40-2004) on the highway and a highway asphalt mixture with the quality of the technical requirements. On the 50th A-class road oil asphalt in accordance with the "Highway Asphalt Pavement Construction Technical Specifications" (JTG F40-2004) Table 4.2.1-1 requirements of the provisions of the project testing. The results of the test are shown in Table 2-5. The test results show that the other items meet the requirements of 50 A-grade road asphalt. The quality of the selected asphalt used in this study is only qualified after aging, and the other is in accordance with JTG F40-2004 "asphalt pavement construction technical specifications" in the relevant asphalt technical requirements. Road Sealing Machine - Road Machinery Equipment Manufacturers - Doan Machinery driveway sealing business for sale asphalt pavement crack repair cost howard county used construction equipment magazine