Author: M M Tariq MorshedPublisher:
ISBN:
Category : Asphalt
Languages : en
Pages : 171
Book Description
The main goal of this study is to assess the feasibility of the use of nanoclay as an alternative to commonly used polymers such as styrene-butadiene-styrene (SBS), which are used to modify the performance grade (PG) of asphalt binders. Three types of nanoclay and two types of neat binders were selected for laboratory investigation. Different amounts (1, 2, and 3%) of nanoclays were used. A blending protocol was developed to mix the nanoclay with the asphalt binder. Penetration, Rotational Viscosity (RV), Dynamic Shear Rheometer (DSR), Multiple Stress Creep and Recovery (MSCR), Frequency Sweep (FS), Linear Amplitude Sweep (LAS), Optical Contact Analyzer (OCA), Texas Boiling Test, and Atomic Force Microscope (AFM) were conducted to evaluate the properties of modified asphalt binders. Significant increases of viscosity and complex shear modulus were observed for nanoclay-modified binders because of its nanoscale phenomena such as structural features, quantum effects, spacial confinement, and high surface energy.
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