Investigation of Microscopic Air Void Structure of Anti-Freezing Asphalt Pavement with X-Ray CT and MIP
The dissolution of snowmelt agent Mafilon (MFL) causes complicated modifications in the pore structure of anti-freezing asphalt mixtures. In this research, X-ray computed tomography (X-ray CT) and mercury intrusion porosimetry (MIP) were employed to study the effects of salt content, soaking time and freeze-thaw cycle on the pore characteristics. The results indicate that the air void content increases dramatically with the salt content, water bath time and freeze-thaw cycles. The loss of MFL alters gradually from the capillary action to dissolution action. The totality of pores was increased by 35.5% after four freeze-thaw cycles and the increase most concentrated in the mesopores (0.2–0.6 mm). The freeze-thaw action increases the size and number of pores, leading to the accelerated dissolution of MFL, while the modification of pores and dissolution of MFL in turn intensify the freeze-thaw damage.
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- Record URL:
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/09500618
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Supplemental Notes:
- Abstract reprinted with permission of Elsevier.
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Authors:
- Wu, Shuyin
- Yang, Jun
- Yang, Ruochong
- Zhu, Jipeng
- Liu, Song
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0000-0002-0851-3746
- Wang, Caoyuan
- Publication Date: 2018-7-30
Language
- English
Media Info
- Media Type: Web
- Features: Figures; Photos; References; Tables;
- Pagination: pp 473-483
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Serial:
- Construction and Building Materials
- Volume: 178
- Publisher: Elsevier
- ISSN: 0950-0618
- Serial URL: http://www.sciencedirect.com/science/journal/09500618?sdc=1
Subject/Index Terms
- TRT Terms: Air voids; Antifreeze; Asphalt pavements
- Uncontrolled Terms: Mercury intrusion porosimetry; X-ray computed tomography
- Subject Areas: Highways; Materials; Pavements;
Filing Info
- Accession Number: 01676045
- Record Type: Publication
- Files: TRIS
- Created Date: Jul 25 2018 9:23AM