Journal article
Evaluation of Asphalt Blended With Low Percentage of Carbon Micro-Fiber and Nanoclay
Journal of testing and evaluation, Vol.41(2), pp.1-11
03/01/2013
Handle:
https://hdl.handle.net/2376/123632
Abstract
The objectives of this study are to investigate the applicability of carbon micro-fiber and nanoclay in asphalt binders and to evaluate the performance of micro- and nano-modified asphalt (NMA) binders in terms of rheological properties. Due to their unique characteristics, micro- and nanomaterials were hypothesized to play a critical role in enhancing the performance behavior of asphalt binders. In light of existing research, carbon micro-fiber (MCF) and Nanomer I.44P (NI.44P) were selected as the micro- and nanomaterials for this research. Then, these materials were added into the PG 58-34 control asphalt binder at the concentrations of 2 % and 4 % by weight. Superpave™ binder tests-rotational viscosity (RV), dynamic shear rheometer (DSR), and bending beam rheometer (BBR)-were then conducted for evaluating the performance of each modified asphalt binder. Also, the characterization tests were run on the aged samples prepared using the rolling thin film oven (RTFO) and pressure aging vessel (PAV) to simulate the short-term and long-term aging. Subsequently, the viscosity, dynamic shear modulus (|G*|) and phase angle (δ) of asphalt binders were analyzed, and the dissipated energy per load cycle was introduced to estimate the asphalt binders' rutting and fatigue cracking resistance. It was found that the dynamic shear modulus of asphalt binders can be improved by the selected micro- and nanomaterials. Furthermore, the NI.44P modified asphalt showed better properties relative to the other modified asphalt binders or the control (PG 58-34) binder.
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Details
- Title
- Evaluation of Asphalt Blended With Low Percentage of Carbon Micro-Fiber and Nanoclay
- Creators
- Hui Yao - Dept. of Civil and Environmental Engineering, Michigan Technological UnivZhanping You - Dept. of Civil and Environmental Engineering, Michigan Technological UnivLiang Li - School of Civil Engineering and Architecture, Central South UnivShu Wei Goh - Dept. of Civil and Environmental Engineering, Michigan Technological UnivJulian Mills-Beale - Dept. of Civil and Environmental Engineering, Michigan Technological UnivXianming Shi - Civil Engineering, Western Transportation Institute, Montana State UnivDavid Wingard - Dept. of Civil Engineering, Clemson Univ
- Publication Details
- Journal of testing and evaluation, Vol.41(2), pp.1-11
- Academic Unit
- Civil and Environmental Engineering, Department of
- Identifiers
- 99900612058101842
- Language
- English
- Resource Type
- Journal article