School of Chemistry and Chemical Engineering, Henan Normal University,
Abstract
For the reason that trace back compatibility amongst SBS and matrix mineral resin, and put into great play proper changing performance asphalt effect of SBS. In this paper, we choose nano-CaCO3 to carry out composite modification test on SBS modified asphalt, through three major index tests, times pressure form examination, bending creep stiffness examination and temperature scan test. The impression to nano-CaCO3 on the various attribute to SBS changing performance mineral resin at unlike dosing levels was analyzed, and then the reasonable dosing of nano-CaCO3 was recommended. The compatibility of SBS changing performance mineral resin and nano-conforming changing performance mineral resin was also compared and broke down using the dissociation test to verify the hyperthermia holding capacity, microtherm resistance to fracture and water holding capacity of the nano-composite changing performance mineral resin compound. The ending state clearly nano-CaCO3 can significantly make better the hyperthermia representation and anti-aging properties of SBS changing performance mineral resin, and it is recommended that the reasonable amount of nano-CaCO3 in the compound changing performance mineral resin is 4.5%. Contrast with SBS modified asphalt, the dynamic stability of nano compound changing performance mineral resin compound heighten by 25.34%, and the residual stability and Fracture Hardness in Cold Air Elegant Rice heighten by 6.74% and 7.25%, respectively. Thus, the nano-CaCO3-SBS compound changing performance mineral resin and mixes have better overall performance and are more suitable for application in the relatively warm climate of southern China.
)