MATEC Web Conf.
Volume 103, 2017International Symposium on Civil and Environmental Engineering 2016 (ISCEE 2016)
|Number of page(s)||8|
|Section||Transportation Infrastructures and Highway Engineering|
|Published online||05 April 2017|
Multiple Stress Creep and Recovery of Nanosilica Modified Asphalt Binder
1 Institute for Infrastructure Engineering and Sustainability Management (IIESM), Universiti Teknologi MARA, Shah Alam, Selangor, Malaysia
2 Faculty of Civil Engineering, Universiti Teknologi MARA, Shah Alam, Selangor, Malaysia
3 Faculty of Engineering, Universiti of Malaya, 50603 Kuala Lumpur, Malaysia
4 Faculty of Civil and Environmental Engineering, Universiti Tun Hussein Onn, Malaysia
* Corresponding author: firstname.lastname@example.org
The main objective of this study is to evaluate the effect of nanosilica (NS) concentration on the rutting parameter of based asphalt binder using the multiple stress creep and recovery (MSCR) test. NS with concentrations between 1% to 5% (1% increment) was used to modify asphalt binder. The nanosilica modified asphalt binder (NSMB) were aged using rolling thin film oven (RTFO) before tested. MSCR test was conducted at 64°C with two stress level (100 Pa and 3200 Pa). The results found that the addition of NS reduced the accumulative strain of NSMB. Besides that, non-recoverable creep compliance decreased and recovery strain increased, which indicates an improvement of rutting resistance and elasticity of the binder, respectively. The grade of asphalt binder also improved from heavy (H) grade to extreme (E) grade. Overall, NSMB 2% show the best improvement in terms of Jnr and %R, thus NSMB 2% considered as a optimum percentage.
© The Authors, published by EDP Sciences, 2017
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