Moisture Susceptibility of Warm-Mix Asphalt Containing Wax- and Chemical-Based Additives
Publication: Journal of Transportation Engineering, Part B: Pavements
Volume 150, Issue 3
Abstract
The present study deals with two types of warm-mix asphalt additives [i.e., wax-based and chemical-based warm-mix asphalt (WMA)]. It involves the application of low calcium fly ash (FA) as a replacement for natural stone dust (NSD) in WMA. The FA content varied from 2% to 8% by the weight of the mix and was subjected to moisture susceptibility tests. The Marshall properties and indirect tensile strength (ITS) tests were conducted for strength evaluation, and the tensile strength ratio was evaluated per AASTHO T283. Also, cohesion resistance and rutting were evaluated for the mixes. A significant increment in strength and reduction in moisture susceptibility was observed in both methods with FA addition. The Cantabro loss and rut depth with wax-based prepared samples was less compared to chemical-based samples. The statistical analysis reported that there was a significant difference between the two techniques.
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Data Availability Statement
All data, models, or codes generated or used during the study appear in the published article.
Acknowledgments
The authors would like to express their thankfulness to the National Institute of Technology, Patna and the transportation lab in the institute who provided facilities for conducting the experiments.
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Information & Authors
Information
Published In
Journal of Transportation Engineering, Part B: Pavements
Volume 150 • Issue 3 • September 2024
Copyright
© 2024 American Society of Civil Engineers.
History
Received: Dec 1, 2022
Accepted: Feb 20, 2024
Published online: Jun 7, 2024
Published in print: Sep 1, 2024
Discussion open until: Nov 7, 2024
ASCE Technical Topics:
- Ashes
- Asphalts
- Chemical additives
- Chemicals
- Chemistry
- Engineering materials (by type)
- Environmental engineering
- Fly ash
- Gravels
- Hydrologic engineering
- Hydrology
- Infrastructure
- Material mechanics
- Material properties
- Materials engineering
- Materials processing
- Moisture
- Pavement condition
- Pavement rutting
- Pavements
- Strength of materials
- Tensile strength
- Transportation engineering
- Water and water resources
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