TY  - JOUR
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85064546968&doi=10.1007%2fs13369-018-3377-x&partnerID=40&md5=aaca044c527513f5ed052225c004db82
JF  - Arabian Journal for Science and Engineering
A1  - Bala, N.
A1  - Kamaruddin, I.
A1  - Napiah, M.
A1  - Sutanto, M.H.
VL  - 44
Y1  - 2019///
N2  - In recent years, nanomaterials have led to promising developments in the improvement of pavement performance. In this study, characterisation of nanocomposite-modified binders using Fourier transform infrared spectroscopy (FT-IR), field emission scanning electron microscopy (FE-SEM), and dynamic shear rheometer was investigated. The study investigates the application of response surface methodology (RSM) to develop models and determine optimum proportions for higher linear viscoelastic properties. FT-IR spectroscopy confirms chemical reaction between nanosilica- and polypropylene-modified bitumens, which resulted in a reduction in oxidative hardening of the modified binders. FE-SEM analysis for the modified binders shows a good dispersion of polypropylene and nanosilica within the modified binder matrix. RSM statistical analysis shows a high correlation coefficient (R2) of 0.9959, 0.9972, and 0.9964 for the responses complex modulus, phase angle, and viscosity. This indicates that the experimental values analysed are in real agreement with the developed models. Analysis of the individual effects of the independent variables temperature and nanosilica content reveals that all the responses are influenced by the interaction of both the two independent variables, but temperature shows a strong influence in the complex modulus and complex viscosity responses than nanosilica content. Numerical optimisation results using the models developed show that an optimum mix can be achieved with 1 nanosilica at a temperature of 30â??C. © 2018, King Fahd University of Petroleum & Minerals.
IS  - 5
ID  - scholars11610
EP  - 4243
SN  - 2193567X
PB  - Springer Verlag
N1  - cited By 20
SP  - 4233
TI  - Polymer Nanocomposite-Modified Asphalt: Characterisation and Optimisation Using Response Surface Methodology
AV  - none
ER  -