ISSN:
1662-8985
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
The interfacial bonding property between carbon fiber laminate (CFL) and concrete is akey issue in the application of RC beams strengthened with CFL. In this paper, fracture mechanicsmethod is used to develop a calculation formula of stress intensity factor for the CFL-concreteinterfacial crack. In combination with a series of tests, the interfacial fracture toughness is discussed,and the influencing factors and process of the intermediate crack-induced debonding (IC debonding)are also analyzed. The tests results show that IC debonding is generally induced by the flexural orflexural-shear cracks in the bottom of RC beams around the mid-span, and develop along theinterface towards the end of the beam. A method to determine IC debonding derived from theoreticanalysis and the tests results demonstrates that the interfacial failure can be effectively avoided bylimiting CFL strain in the range of the debonding strain
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.33-37.47.pdf
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