Performance Evaluation of Hot Mix Asphalt Reinforced by Basalt Fibers with Various Diameters
This paper presents the experimental results to investigate the potential effect of fiber diameters on the performance of hot mix asphalt reinforced by basalt fibers (BFs). BFs with different diameters—7, 13, and 25 µm—were mixed into stone mastic asphalt in a dry process to prepare specimens of BF-reinforced hot mix asphalt. Several tests, such as the uniaxial penetration test, low-temperature beam bending test, immersed Marshall test, and semicircular bending (SCB) test were conducted to evaluate the performances of the specimens. Simultaneously with the SCB test, the digital image correlation (DIC) method was adopted to capture the images and further analyze the crack propagation process of the SCB specimens. According to the findings, the optimal asphalt contents became high with smaller fiber diameters. The 7-µm BFs enhanced the performances of BF-reinforced hot mix asphalt well. The crack propagation rate (v) obtained from the DIC method proved that BFs could well defer the propagation of the cracks. The slippage theory further explicated the strengthening mechanism of the BF-reinforced asphalt mixture.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/00903973
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Supplemental Notes:
- © ASTM International 2022. All rights reserved. This material may not be reproduced or copied, in whole or part, in any printed, mechanical, electronic, film, or other distribution and storage media, without the written consent of the publisher.
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Authors:
- Kou, Changjiang
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0000-0003-0076-1929
- Wu, Xing
- Kang, Aihong
- Xiao, Peng
- Wu, Zhengguang
- Publication Date: 2022-7
Language
- English
Media Info
- Media Type: Web
- Features: References;
- Pagination: pp 1920-1933
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Serial:
- Journal of Testing and Evaluation
- Volume: 50
- Issue Number: 4
- Publisher: American Society for Testing and Materials (ASTM)
- ISSN: 0090-3973
- EISSN: 1945-7553
- Serial URL: https://www.astm.org/DIGITAL_LIBRARY/JOURNALS/TESTEVAL/index.html
Subject/Index Terms
- TRT Terms: Asphalt tests; Basalt; Cracking; Diameter; Fiber reinforced materials; Hot mix asphalt
- Subject Areas: Highways; Materials;
Filing Info
- Accession Number: 01841158
- Record Type: Publication
- Files: TRIS
- Created Date: Mar 30 2022 3:13PM