Chapter
Apr 26, 2012
The Research on the Potential Leachability of Asphalt
Authors: Hongmei Cai, Jianming Wei, Yuzhen Zhang, and Jin ChangtaiAuthor Affiliations
Publication: Emerging Technologies for Material, Design, Rehabilitation, and Inspection of Roadway Pavements
Abstract
The potential leachability of five asphalt binders was studied in the present study. The deionized water was the leaching agent and the content of chemical oxygen demand (COD) in the leachates was used to evaluate the leachability of asphalt binders. It was found that some components could leach from asphalt into water, and the COD in leachates increased with the leaching time. Four influence factors, including temperature, time, NaCl content, as well as pH value, were investigated to obtain the optimal conditions via orthogonal experimental design and single factor test, under which the COD of leachates reached maximum value. GC/MS analysis of the leachates showed that the oxygen compounds were the dominant part and hydrocarbon followed.
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Published In
Emerging Technologies for Material, Design, Rehabilitation, and Inspection of Roadway Pavements
Pages: 257 - 265
Copyright
© 2011 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
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ASCE Technical Topics:
- Aging (material)
- Binders (material)
- Chemical processes
- Chemicals
- Chemistry
- Deterioration
- Engineering materials (by type)
- Environmental engineering
- Hydrologic engineering
- Hydrologic properties
- Hydrology
- Leachates
- Leaching
- Materials characterization
- Materials engineering
- Oxygen demand
- Waste management
- Waste treatment
- Water and water resources
- Water content
- Water demand
- Water management
- Water supply
Authors
Affiliations
Hongmei Cai
Taizhou Entry-Exit Inspection and Quarantine Bureau, Taizhou, Jiangsu Province, PR China, 225300
Jianming Wei
State Key Lab of Heavy Oil Processing, Heavy Oil Research Institute, China University of Petroleum (East China), Dongying, Shandong Province, China, 257061
Yuzhen Zhang
State Key Lab of Heavy Oil Processing, Heavy Oil Research Institute, China University of Petroleum (East China), Dongying, Shandong Province, China, 257061
Jin Changtai
Taizhou Entry-Exit Inspection and Quarantine Bureau, Taizhou, Jiangsu Province, PR China, 225300
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