Tensile Durability of Cement-Based FRP Composite Wrapped Specimens
Publication: Journal of Composites for Construction
Volume 3, Issue 1
Abstract
Fiber-reinforced polymer composite (FRPC) wraps are increasingly being used for rehabilitation and strengthening of concrete structures. This paper presents the results of an experimental study on the tensile performance of cement-based specimens wrapped with FRPC sheets subjected to wet-dry and freeze-thaw cycles. The tensile strength values were evaluated using the ASCERA hydraulic tensile tester. This simple testing technique provides a uniform stress distribution throughout the specimen, thus minimizing eccentricity and gripping effects, which can be of a significant source of error. Cement-based specimens were wrapped with three different types of FRP tow sheets: two carbon and one glass. Test variables included the type of fiber (C1, C5, and GE) and the environmental exposure conditions. The specimens were conditioned in three different environments, as follows: (1) room temperature (23°C); (2) 300 wet-dry cycles using salt water; and (3) 300 freeze/thaw cycles. At the end of each exposure, ultimate strength and load-extension behavior were obtained and then compared to the performance of unconditioned samples. Results show that specimens wrapped with carbon-fiber-reinforced polymer experienced no reduction in strength due to exposure, whereas specimens with glass-fiber-reinforced polymer experienced a significant reduction in strength. Specimens subjected to wet-dry cycles experienced a reduction of 20%, and those subjected to freeze-thaw cycles experienced about 12%. The exposure to wet-dry and freeze-thaw cycles showed no effect on the load-extension behavior of the wrapped specimens. The tensile strength values were presented using Weibull statistics to study the reliability of the test data.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
ASEA CERAMA AB. ( 1988). “Introduction and operation manual for ASCERA hydraulic tensile testing.” Allmenna Svenska Elektriska Aktiebolaget, Robertsfors, Sweden.
2.
ASTM. ( 1988). “Standard test method for resistance of concrete to rapid freezing and thawing.” Annual book of ASTM standards, Vol. 04.02, ASTM C-666, ASTM, Philadelphia, Pa.
3.
Bank, L. C., Barkatt, A., and Centry, T. R. ( 1995). “Accelerated test methods to determine the long-term behavior of FRP composite structure; environmental effects.” Journal of Reinforced Plastics and Compos., 14(6), 559–587.
4.
Baratta, F. I., and Driscoll, G. W. ( 1968). “A new axial tension tester for brittle materials.” AMMRC TR 69-02, Army Materials and Mechanics Research Center, Watertown, Mass.
5.
Dolan, C. ( 1989). “Developments in non-metallic prestressing tendons.” PCI J., 35(5), 80–88.
6.
Driscoll, G. W., and Baratta, F. I. ( 1971). “Modification to an axial tension tester for brittle materials.” AMMRC TR 71-3, Army Materials and Mechanics Research Center, Watertown, Mass.
7.
Dutta, P. K. ( 1992). “Low temperature compressive strength of glass-fiber-reinforced polymer composites.” Proc., 11th Conf. on Offshore Mech. and Arctic Engrg., Calgary, Canada.
8.
El-Korchi, T., Toutanji, H. A., Leatherman, G. L., Katz, R. N., Lucas, H., and Demers, C. ( 1991). “Tensile testing of fiber-reinforced cementitious composites.” Proc., Symp. of Cement and Concrete Res., Vol. 211, 221–228.
9.
El-Korchi, T., Toutanji, H., and Tsubota, S., ( 1998). “New approach to tensile strength testing of cement-based FRP composite wrapped specimens.” Proc., 2nd Int. Conf. on Compos. in Infrastructure (ICCI-2), Vol. 1, 93–110.
10.
Hermansson, L., Adlerborn, J., and Burstrom, M. ( 1987). “Tensile testing of ceramic materials.” High tech ceramics, P. Vincenzini, ed., Elsevier Science, Amsterdam, 1161–1168.
11.
Jones, C. J., Dickson, R. F., Adam, I., Reiter, H., and Harris, B. ( 1984). Proc., Royal Society of London, A396, 315–338.
12.
Karbhari, V. M., and Engineer, M. ( 1996). “Effect of environmental exposure on the external strengthening of concrete with composites—short term bond durability.” J. Reinforced Plastics and Compos., 15, 1194–1217.
13.
Katsuki, F., and Uomoto, T. ( 1995). “Prediction of deterioration of FRP rods due to alkali attack.” Proc., Int. RILEM Symp. (FRPRCS-2), Gent, Belgium, 82–89.
14.
Katz, R. N., Wechsler, G., Toutanji, H. A., Freil, D., Leatherman, G. L., and Rafaniello, W. ( 1993). “Room temperature tensile strength of AlN.” Proc., Ceramic Engrg. and Sci., 14(718), 282–291.
15.
Kingery, W. D., Bowen, H. L., and Uhlmann, D. R. ( 1976). Introduction to ceramics, John Wiley, New York.
16.
Lord, H. W., and Dutta, P. K. ( 1988). “On the design of polymeric composite structures for cold regions applications.” J. Reinforced Plastics and Compos., 7, 435–458.
17.
Lucas, P. H. ( 1991). “Direct tensile testing of brittle materials,” Masters thesis, Dept. of Mech Engrg., Worcester Polytechnic Institute, Worcester, Mass.
18.
McLean A. F., and Hartsck, D. L. ( 1989). Design with structural ceramics . Academic, San Diego, 27–95.
19.
Porter, M. L., and Barnes, B. A. ( 1998). “Accelerated aging degradation of glass fiber composites.” Proc., 2nd Int. Conf. on Compos. in Infrastructure (ICCI-2), Vol. 2, 446–459.
20.
Sen, R., Mariscal, D., and Shahawy, M. R. ( 1993). “Durability of fiberglass pretensioned beams.” ACI Struct. J., 90(5), 525–533.
21.
Tannous, F. E., and Saadatmanesh H. ( 1998). “Durability and long-term behavior of carbon and aramid FRP tendons.” Proc., 2nd Int. Conf. on Compos. in Infrastructure (ICCI-2), Vol. 2, 524–538.
22.
Toutanji, H. A. ( 1992). “The development of a cementitious composites axial tensile technique and its application to carbon fiber-reinforced cementitious composites,” PhD thesis, Dept. of Civ. Engrg., Worcester Polytechnic Institute, Worcester, Mass.
23.
Toutanji, H. A., El-Korchi, T., Katz, R. N., and Leatherman, G. L. ( 1993). “Behavior of carbon fiber-reinforced cement composites in direct tension.” J. Cement and Concrete Res. 23(3), 618–626.
24.
Toutanji, H. A., and El-Korchi, T. ( 1994). “Uniaxial tensile strength of cementitious composites.” J. Testing and Evaluation, 22(3), 226–232.
25.
Toutanji, H., and El-Korchi, T. ( 1996). “Tensile and compressive strength of silica fume-cement pastes and mortars.” ASTM J. of Cement, Concrete, and Aggregates, 18(2), 78–84.
26.
Toutanji, H. ( 1997). “Intrinsic tensile strength of high-strength cementitious composites.” U.S. Army Corps of Engineers Final Report, Contract Number W81EWF61373919, Dept. of Civ. Engrg., University of Alabama in Huntsville, Huntsville, Ala.
27.
Toutanji, H. A., Freil, D., El-Korchi, T., Katz, R. N., Wechsler, G., and Rafaniello, W. ( 1995). “Room temperature tensile and flexural strength of ceramics in the AlN-SiC system.” J. European Ceramic Soc., 15(5), 425–434.
28.
Weibull, W. ( 1951). “A statistical distribution function of wide application.” J. Appl. Mech., 18, 293–297.
Information & Authors
Information
Published In
Journal of Composites for Construction
Volume 3 • Issue 1 • February 1999
Pages: 38 - 45
History
Received: Feb 26, 1998
Published online: Feb 1, 1999
Published in print: Feb 1999
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.