کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
259673 | 503640 | 2010 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Preparation and rheological characterization of asphalt binders reinforced with layered silicate nanoparticles Preparation and rheological characterization of asphalt binders reinforced with layered silicate nanoparticles](/preview/png/259673.png)
Bentonite clay (BT) and organically modified bentonite (OBT) were used to reinforce and modify a bituminous paving asphalt binder. The modified asphalt binders were produced by melt processing under sonication and shearing stresses. The interlayer spacing of silicate layers in bentonite, organically modified bentonite and the modified asphalt binders were analyzed by wide angle X-ray diffraction (WAXD). The softening point, viscosity and ductility of the modified asphalts were tested as a function of clay content and clay type. The dynamic shear rheological tests showed that the modified asphalts have higher rutting resistance. Bending beam rheometer (BBR) test results for aged specimens (through rolling thin film oven (RTFO) and pressure aging vessel (PAV)) indicated that adding BT and OBT can significantly improve low temperature rheological properties and cracking of asphalt.
Journal: Construction and Building Materials - Volume 24, Issue 7, July 2010, Pages 1239–1244