چکیده مقاله
In this research bitumen has been modified with adding different nanoclay by melt blending with montmorillonite nanoclay MN , expanded vermiculite nanoclay VN and organic rectorite nanoclay RN The morphology of the nanocomposites was characterized by X ray diffraction XRD The binders were aged according to the thin film oven test TFOT and pressure aging vessel PAV The effect of nanoclays on the physical and aging properties of the bitumen was investigated XRD shows that RN and MN modified bitumen’s form the intercalated nanostructures, while the VN modified bitumen forms the exfoliated nanostructure The addition of nanoclay to the bitumen increases both softening point and viscosity of the bitumen Compared with RN and VN modified bitumen’s, the MN modified bitumen shows the higher increase in softening point and viscosity as well as the low temperature ductility As a result of TFOT and PAV aging, the mass change rate and viscosity aging index of the bitumen are decreased due to the introduction of nanoclay, indicating the good aging resistance of nanoclay bitumen nanocomposites MN has more pronounced improvements in aging resistance of bitumen in comparison with RN and MN modified bitumen’s due to the formation of exfoliated structure
کلیدواژهها
نویسندگان
Saeed Ghaffarpour Jahromi
Shahid Rajaee Teacher Training University, Tehran, Iran
Henglong Zhang
Wuhan University of Technology, Wuhan ۴۳۰۰۷۰, PR China
شیوه ارجاع
Ghaffarpour Jahromi, Saeed and Zhang, Henglong,1391,Effect of Various Nanoclay on the Reological Behavior of Bitumen,9th International Congress on Civil Engineering,Isfahan
ارائهشده در
مجموعه مقالات نهمین کنگره بین الملی مهندسی عمران19 اردیبهشت 1391 · اصفهان