RUTTING AND FATIGUE BEHAVIOR OF NANOCLAY MODIFIED BITUMEN

  • Saeed Ghaffarpour Jahromi Shahid Rajaee Teacher Training University, Tehran, Iran

Abstract

Nanoclays  are  new  generation  of  processed  clays  of  interest  in  a  wide  range  of  high  performance composites. In other words, nanoclay is defined as clay that can be modified to make the clay complexes compatible with organic monomers and polymers. Here, it can be said that the polymeric nanocomposites are among the most exciting and promising classes of materials discovered recently. A number of physical properties are enhanced successfully when a polymer is modified with small amount of nanoclay on condition that the clay is dispersed at nanoscopic level. This research has accomplished a comparative rheological test on the unmodified and nanoclay modified bitumen. For that matter, two types of nanoclay were used: Nanofill-15 and Cloisite-15A. X-ray diffraction (XRD) technique has been used to study the nanostructure exfoliation of nanoclay platelets in bitumen. The results show that compare to unmodified bitumen, the nanoclay modification leads to changes in rheological parameter by increasing stiffness and decreasing the phase angle hence; it can also reduce aging effect on bitumen. Further, the comparison 
rutting parameter (G*/sinδ) shows that the nanoclay modification could increase the rutting resistances of bitumen and the improvement is dependent upon the type and amount of nanoclay. The fatigue resistance parameter (G*sinδ) at the low to medium temperature shows that the nanoclay modification reduces the fatigue life however it exhibits the same fatigue life as that of the unmodified bitumen after a particular ageing condition.

Published
2011-08-01
How to Cite
GHAFFARPOUR JAHROMI, Saeed. RUTTING AND FATIGUE BEHAVIOR OF NANOCLAY MODIFIED BITUMEN. EACEF - International Conference of Civil Engineering, [S.l.], v. 1, p. 045, aug. 2011. Available at: <http://proceeding.eacef.com/ojs/index.php/EACEF/article/view/237>. Date accessed: 19 may 2024.
Section
Group of Building Materials Engineering (Nanotechnology)