Damage Evolution of Reactive Powder Concrete by Low Velocity Impact

Abstract:

By means of the three-point bending impact equipment, with the measurement of ultrasonic velocity, the low velocity impact damage evolution of reactive powder concrete (RPC) with 0, 1%, 2% and 3% volume fraction of steel fiber were tested. In this study, the damage variable D pertaining to ultrasonic velocity had been selected to study the damage evolution process of RPC. The results indicate that the fatigue damage process of RPC is linear. The addition of fibers effectively improves the impact energy absorption behavior of RPC matrix, and the damage variable D of RPC with different fiber dosages increases by 1.1~3.5 times than that of plain concrete when it is ultimately destroyed.

• Periodical: Key Engineering Materials (Volume 477)
• Pages: 252-256
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.477.252
• Online since: April 2011
• Authors: Qing Xin Zhao, Jin Rui Zhang, Zhao Yang Liu, Ran Ran Zhao
• Keywords: Damage Evolution, Damage Variable, Reactive Powder Concrete (RPC), Steel Fiber (SF), Volume Fraction

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