›› 2007, Vol. 28 ›› Issue (9): 1997-2002.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Research on deformation and failure of steel fiber concrete by real-time laser holographic interferometry

LIU Dong-mei1,2, SONG Chao-ye3, CHEN Zhi-yong4   

  1. 1.School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China; 2.School of Civil Engineering and Architecture, Zhejiang Sci-Tech University, Hangzhou 310018, China; 3. China Railway Tunnel Survey & Design Institute Co. Ltd., Luoyang 471009, China; 4. Guangdong Design Institute of Heavy Industry & Architecture, Guangzhou 510030, China
  • Received:2005-12-26 Online:2007-09-10 Published:2013-10-15

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Abstract: Laser real-time holographic interferometry is applied to research the whole failure process of three-point bending beams of steel fiber concrete(SFC). The real-time holograms of crack growth on SFC beams are continuously captured. According to the active fringe’s movement and distribution on the SFC specimens as well as the hologram’s interpretation, the initiation and development of crack in SFC and its deforming character can be exactly visually shown. The experiment indicates the effect of steel fiber preventing fracture and increasing toughness is obvious while the content of steel fiber in concrete specimens is higher than 1.0 %. Based on the calculation of fracture parameters and its analysis, It is clearly revealed that fracture energy is a sensitive parameters for reflecting the effect of steel fiber preventing fracture.The fracture behaviour of the SFC specimens demonstrated by active fringes distribution is in accordance with the result from the explanation of fracture energy in SFC. Laser real-time holographic interferometry can provide an effective experimental support for concrete fracture mechanics.

Key words: real-time holographic interferometry, active fringe;steel fiber concrete, failure process, fracture energy

CLC Number: 

  • TU 377.9
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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