The High Temperature Performance Evaluation of Polymer/Nanocomposite Modified Asphalt Cement

Authors : Mustafa ALAS, Ali ALBRKA, Hüseyin GÖKÇEKUŞ

Pages : 12143-12162

Doi:10.18400/tekderg.761208

View : 5 | Download : 2

Publication Date : 2022-07-01

Article Type : Research Paper

Abstract :The current study focuses on the effect of Acrylate-styrene-acrylonitrile insert ignore into journalissuearticles values(ASA);/Nanosilica insert ignore into journalissuearticles values(Si); modified binders on the complex modulus insert ignore into journalissuearticles values(G*); and rutting resistance parameters insert ignore into journalissuearticles values(G*/ sinδ); of Asphalt Cement insert ignore into journalissuearticles values(AC);. Four different blends including the base binder and the polymer nanocomposites which were formed by blending 5% ASA to base binder with the addition of nanosilica at 3, 5 and 7% by the weight were the subject of investigations. Conventional and Dynamic Shear Rheometer insert ignore into journalissuearticles values(DSR); testing procedures were conducted as well as morphology analysis using Fourier Transform Infrared Spectroscopy insert ignore into journalissuearticles values(FT-IR);. The rheological characteristics of AC were analysed by master curves, isochronal plots and rutting resistance parameter plots. Test results revealed that G* and G*/ sinδ of all modified samples were significantly enhanced compared to the base binder. Multiple Stress Creep Recovery Test insert ignore into journalissuearticles values(MSCRT); conducted at 100 Pa and 3200 Pa showed that, non-recoverable compliance was reduced and elastic recovery of modified binders were improved. Optimum concentration was found to be 5% ASA/Si composite, as further addition of polymer nanocomposite resulted in lower enhancement in the rheological properties of modified AC due to the occurrence of agglomeration between the composite and the base binder.
Keywords : Rheological characterization, polymer nanocomposite, acrylate styrene acrylonitrile, nano silica