Evaluation of Semicircular Bend Geometric Properties for Asphalt Concrete Testing
Publication: Journal of Materials in Civil Engineering
Volume 33, Issue 12
Abstract
A semicircular bend [SC(B)] test is widely used to evaluate the low-temperature performance of asphalt concrete. However, it is not clear what the proper thickness of a specimen should be, nor the proper notch configuration. This research is targeted to investigate the influence of thickness and notch configurations on stress intensity factors and the fracture energy of asphalt concrete specimens using AASHTO TP 105. Three levels of specimen thickness and three types of notch configuration were set as two variables. Besides, the representative volume element and plane strain status of the SC(B) were discussed. The test results showed the following: (1) the specimen thickness and test temperature did not statistically impact the stress intensity factor; (2) the specimen thickness was significantly impacting on fracture energy; (3) when interacted with the specimen thickness, the notch configuration and test temperature were statistically significant to the fracture energy; and (4) the SC(B) test in this study exhibited the lowest variance in the test results at the condition of , a semicircular notch, and a 50-mm specimen thickness. In conclusion, the specimen thickness was recommended to be 50 mm for the nominal maximum aggregate size (NMAS) 12.5-mm specimen.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
Acknowledgments
The authors thank the Roadhogs group for their support.
References
AASHTO. 2013. Standard method of test for determining the fracture energy of asphalt mixtures using semicircular bend geometry (SCB). AASHTO TP 105. Washington, DC: AASHTO.
AASHTO. 2016. Standard method of test for determining the fracture potential of asphalt mixture using semicircular bend geometry (SCB). AASHTO TP 124. Washington, DC: AASHTO.
Anderson, T. L., and T. L. Anderson. 2005. Fracture mechanics: Fundamentals and applications CRC Press.
ASTM. 1979. Standard test method for dynamic modulus of asphalt mixtures (withdrawn 2009). ASTM D3497-79(2003). West Conshohocken, PA: ASTM.
ASTM. 2006. Standard test method for linear-elastic plane-strain fracture toughness of metallic materials. ASTM E399-06e2. West Conshohocken, PA: ASTM.
ASTM. 2013. Standard test method for determining fracture energy of asphalt-aggregate mixtures using the disk-shaped compact tension geometry. ASTM D7313-13(2013). West Conshohocken, PA: ASTM.
Braham, A., W. Buttlar, and F. Ni. 2010. “Laboratory mixed-mode cracking of asphalt concrete using the single-edge notch beam.” Road Mater. Pavement Des. 11 (4): 947–968. https://doi.org/10.1080/14680629.2010.9690314.
Broek, D. 1986. Elementary engineering fracture mechanics. Hingham, MA: Kluwer Academic Publishers.
Chong, K. P., and M. D. Kuruppu. 1984. “New specimen for fracture toughness determination for rock and other materials.” Int. J. Fract. 26 (2): R59–R62. https://doi.org/10.1007/BF01157555.
Kim, Y. R. 2009. Modeling of asphalt concrete. Reston, VA: McGraw Hill.
Kim, Y.-R., J. Lee, and J. Lutif. 2010. “Geometrical evaluation and experimental verification to determine representative volume elements of heterogeneous asphalt mixtures.” J. Test. Eval. 38 (6): 660–666.
Kim, Y.-R., J. Lutif, and D. Allen. 2009. “Determining representative volume elements of asphalt concrete mixtures without damage.” Transp. Res. Rec. 2127 (1): 52–59. https://doi.org/10.3141/2127-07.
Koh, C., and R. Roque. 2010. “Use of nonuniform stress-state tests to determine fracture energy of asphalt mixtures accurately.” Transp. Res. Rec. 2181 (1): 55–66. https://doi.org/10.3141/2181-07.
Maher, A., and T. Bennert. 2008. Evaluation of Poisson’s ratio for use in the mechanistic empirical pavement design guide (MEPDG). Washington, DC: Federal Highway Administration.
Ozer, H., I. L. Al-Qadi, J. Lambros, A. El-Khatib, P. Singhvi, and B. Doll. 2016. “Development of the fracture-based flexibility index for asphalt concrete cracking potential using modified semi-circle bending test parameters.” Constr. Build. Mater. 115 (Jul): 390–401. https://doi.org/10.1016/j.conbuildmat.2016.03.144.
Ozer, H., I. L. Al-Qadi, P. Singhvi, T. Khan, J. Rivera-Perez, and A. El-Khatib. 2016. “Fracture characterization of asphalt mixtures with high recycled content using Illinois semicircular bending test method and flexibility index.” Transp. Res. Rec. 2575 (1): 130–137. https://doi.org/10.3141/2575-14.
Romero, P., and E. Masad. 2001. “Relationship between the representative volume element and mechanical properties of asphalt concrete.” J. Mater. Civ. Eng. 28 (8): 77–84. https://doi.org/10.1061/(ASCE)0899-1561(2001)13:1(77).
Smith, S., A. Morales, and A. Braham. 2019. “Evaluating aggregate size effects on dynamic modulus using gray scale analysis, submitted to asphalt paving technology.” J. Assoc. Asphalt Paving Technol. 88: 687–717.
Wagoner, M. P., W. G. Buttlar, G. H. Paulino, and P. Blankenship. 2005. “Investigation of the fracture resistance of hot-mix asphalt concrete using a disk-shaped compact tension test.” Transp. Res. Rec. 1929 (1): 183–192. https://doi.org/10.1177/0361198105192900122.
Zofka, A., and A. Braham. 2009. “Comparison of low-temperature field performance and laboratory testing of 10 test sections in the Midwestern United States.” Transp. Res. Rec. 2127 (1): 107–114. https://doi.org/10.3141/2127-13.
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Published In
Journal of Materials in Civil Engineering
Volume 33 • Issue 12 • December 2021
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Jan 28, 2021
Accepted: Apr 13, 2021
Published online: Sep 22, 2021
Published in print: Dec 1, 2021
Discussion open until: Feb 22, 2022
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