The Research On Organic Montmorillonite Modified Asphalt Performance

Viscoelastic properties of asphalt because of its good highway has been widely used in road pavement. However, with the increase of service life, the gradual degradation of its surface features, prone to rutting, pro pack, cracking, loose, and pits and other damage. Therefore, the modified asphalt to improve its mechanical properties and temperature tolerance, thus enhancing pavement performance and life of China's highway construction has very important significance.Using organic methods through the melt intercalation of the shares of different quality organic montmorillonite were with three asphalt (Zhenhai AH-70 asphalt, made AH-70 asphalt, Esso AH-70 asphalt) mixture, preparation of organic Montmorillonite Modified Asphalt, on the organic MMT modified asphalt pavement performance and flame retardant performance test of organic montmorillonite modified asphalt performance of conventional technology and changes in fire-retardant properties to determine the organic Mongolia Modification of soil removal performance.X-ray diffraction experiment showed that organic montmorillonite added to the asphalt in some form intercalated or exfoliated nanocomposites. With the increase of organic MMT content, the penetration of modified asphalt reduced penetration index increased, adaptive temperature increase; ductility decreased, increased viscosity and better mechanical properties, high temperature rutting resistance low temperature cracking resistance capacity enhancement; limiting oxygen index (LOI) increases, flame-retardant performance enhancements.AH-70 asphalt in Zhenhai addition of polyethylene (PE) PE preparation of modified asphalt, asphalt mixed with the PE modification Preparation of organic montmorillonite modified bitumen compound on the PE modified asphalt and composite modified routine technical performance and dynamic mechanical properties, of PE modified asphalt compound modified asphalt changes in technical specifications to determine the PE and the performance of organic modified montmorillonite.PE modifier added to the asphalt after the asphalt smaller the penetration, penetration index increased significantly, lower temperature sensitivity, equivalent brittle point rise, low-temperature performance degradation; adding organic montmorillonite Preparation compound modified asphalt, dynamic storage modulus E 'and loss modulus E''reduced, increased low temperature flexibility, toughness is decreased; 15℃penetration increased significantly lower yield point of brittle, low temperature performance enhancement; viscosity dynamic storage modulus E 'decreases, PE, organic montmorillonite modifier could improve the mechanical properties of asphalt.AH-70 asphalt at Zhenhai in preparation to join SBS SBS modified bitumen, SBS modified asphalt mixed with the organic compound prepared montmorillonite modified asphalt, on the SBS modified asphalt and composite modified routine technical performance and dynamic mechanical properties, of SBS modified asphalt and modified bitumen compound changes in the technical specifications to determine the SBS and the performance of organic modified montmorillonite.SBS, organic clay modifier to meet the asphalt after the composite modified slightly lower penetration, penetration index increased, brittle point temperature lower, high and low temperature performance has been improved. Do SHRP asphalt composite technical performance test, technical indicators to meet the requirements to meet the PG70-22...