Cellulose Fiber Reinforced Concrete Fracture Mechanisms and Damage Detection Using Acoustic Emission

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ASTM C78 standard tests for flexural strength of concrete were conducted on cellulose fiber reinforced concrete (CFRC) specimens using varying percentages of ultimate load. During testing, Acoustic Emission (AE) signals were recorded while after testing, a scanning electron microscope (SEM) was used to visually observe surface features. SEM results appear to illustrate three important stages of the fracture process: cement cracking, fiber-cement debonding, and fiber breakage/pullout. AE results were used to bound ranges for a relationship between AE amplitude and CFRC fracture mechanisms.

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3-9

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December 2012

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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[1] S. Barre, and M. L. Beneggagh, On the Use of Acoustic Emission to Investigate Damage Mechanism in Glass-fiber-reinforced Polypropylene, Composites Science and Technology 1994; 52: 369-376.

DOI: 10.1016/0266-3538(94)90171-6

Google Scholar

[2] K. Komai, K. Minoshima, and T. Shibutani, (1991). Investigations of the Fracture Mechanism of Carbon/Epoxy Composites by AE Signal Analyses, JSME International Journal 1991; 34(I): 381-388.

DOI: 10.1299/jsmea1988.34.3_381

Google Scholar

[3] Y. K. Ji, and J.W. Ong, A Study on the Acoustic Emission Characteristics of the Carbon Fiber Reinforced Plastics, Nondestructive Characteristics of Materials 1994; 6: 207-214.

DOI: 10.1007/978-1-4615-2574-5_26

Google Scholar

[4] P. Rizzo, and Lanza di Scalea, F. Acoustic Emission Monitoring of Carbon-fiber-reinforced-polymer Bridge Stay Cables in Large-scale Testing, Experimental Mechanics 2001; 41(3): 282-290.

DOI: 10.1007/bf02323146

Google Scholar

[5] A. A. Moslemi: Emerging Technologies in Mineral-Bonded Wood and Fiber Composites; Advanced Performance Materials Vol. 6 (1999), pp.161-179.

Google Scholar

[6] B. J. Mohr, H. Nankoand, K.E. Kurtis: Durability of kraft pulp fiber-cement composites to wet/dry cycling; Cement & Concrete Composites Vol. 27 (2005), pp.435-448.

DOI: 10.1016/j.cemconcomp.2004.07.006

Google Scholar