Fracture and Tensile Characteristics of Asphalt-Rubber Concrete
Publication: Journal of Materials in Civil Engineering
Volume 11, Issue 4
Abstract
Fracture and tensile characteristics of asphalt concrete mixtures affect the structural performance of pavements, particularly under low-temperature conditions. This paper reports a study of the tensile and fracture properties of asphalt-rubber (AR) concrete mixtures that formed the basis for the recommendation of an optimum asphalt mixture design incorporating crumb rubber from scrap tires. The work involved a full-factorial experiment with three different rubber contents (19, 22, and 24%), and three different AR binder contents (6, 7.5%, and 9%) in a surface mixture. Fracture and indirect tension tests were performed on AR concrete beams and Marshall test samples, respectively, at two different test temperatures of 25 and 5°C. The variables studied were indirect tensile strength, peak center-point load carried, load-point displacement, and unit fracture energy. The results show that higher mean values of indirect tensile strength and fracture energy were obtained corresponding to the highest AR binder content (9%), irrespective of rubber contents, particularly at lower temperatures. A statistical analysis of the test results reveals that there are no significant differences among the means of most of the variables studied corresponding to different rubber contents. However, the differences are significant for different binder contents.
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References
1.
Anderson, V. L., and McLean, R. A. ( 1974). Design of experiments: A realistic approach. Marcel Dekker, New York, 1–41.
2.
Chehovits, J. G. (1989). “Design methods for hot mixed asphalt-rubber concrete in asphalt pavement.” Proc., Nat. Seminar on Asphalt-Rubber, Asphalt Rubber Producers Group, Kansas City, Mo., 151–190.
3.
Fager, G. A. (1993). “Crumb rubber use in hot bituminous pavements (KDOT experience/1990–92).” Proc., Crumb Rubber Modified Asphalt Workshop.
4.
Heitzman, M. ( 1992). “An overview of design and construction of asphalt paving materials with crumb rubber additive.” 71st Annu. Meeting, Transportation Research Board, Washington, D.C.
5.
Hossain, M., Funk, L., and Sadeq, A. (1995). “Use of recycled chunk rubber asphalt concrete (CRAC) on low volume roads and use of recycled crumb rubber modifier in asphalt pavement.” Final Rep. K-TRAN: KSU-94-6, Kansas Department of Transportation, Topeka, Kans.
6.
Hoyt, D. M., Lytton, R. L., and Roberts, F. L. (1987). “Criteria for asphalt-rubber concrete in civil airport pavements, Vol. 2—Evaluation of asphalt-rubber concrete.” Rep. No. DOT/FAA/PM-86/39.11, Federal Aviation Administration.
7.
Jenq, Y., and Liu, P. ( 1992). “Effect of fiber reinforcement on the crack resistance of asphalt concrete.” 71st Annu. Meeting, Transportation Research Board, Washington, D.C.
8.
Kennedy, T. W. (1977). “Characterization of asphalt pavement materials using the indirect tensile test.” Proc., Vol. 46, Association of Asphalt Paving Technologists, St. Paul, Minn.
9.
Majidzadeh, K., Buranarom, C., and Karakouzian, M. (1976). “Application of fracture mechanics for improved design of bituminous concrete, Vols. 1 and 2. Rep. Nos. FHWA-RD-76-91 and FHWA-RD-76-92, Federal Highway Administration, Columbus, Ohio.
10.
Majidzadeh, K., and Ramasamooj, D. V. (1971). “Development of testing procedures and a method to predict fatigue failures of asphalt concrete pavement systems.” Final Rep. Project RF 2873, Ohio State University Research Foundation.
11.
Roberts, F. L., et al. ( 1991). Hot mixture asphalt materials, mixture design and construction, NAPA Education Foundation, Md., 167–180.
12.
SAS/STAT user's guide. (1989). Version 6, 4th Ed., Vol. 1, SAS Institute, Cary, N.C.
13.
Shah, S. P., Swartz, S. E., and Ouyang, C. ( 1995). Fracture mechanics of concrete. Chap. 6, Wiley, New York.
14.
“Special provisions to the standard specifications for state road and bridge construction.” (1992). Nos. 90P-3349 and 90P-3346-REV, Kansas Department of Transportation, Topeka, Kans.
15.
Standard specifications for state road and bridge construction (1990). Kansas Department of Transportation, Topeka, Kans.
16.
“Standard specifications for transportation materials and methods of sampling and testing, part II.” (1993). AASHTO, Washington, D.C.
17.
Takallou, H. B. (1991). “Recycling tires in rubber asphalt paving yields cost, disposal benefits.” Elastomerics, 123, 19–24.
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Received: Feb 8, 1996
Published online: Nov 1, 1999
Published in print: Nov 1999
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