Influence of Reinforcement Ratios on Concrete Fracture Parameters

Abstract:

Based on double-K fracture model, adopt three-point bending beam which has been recommended by RILEM, the fracture properties of three groups reinforced concrete beams were studied. Refer to the relevant literature, fracture parameters of reinforced concrete three-point bending beams are examined. Through the analysis of whole process of crack propagation of reinforced concrete three-point bending beams, the results show that the reinforcement ratios can't preventing the cracking effectively, but can increase the maximum loads, thus improving the relative toughness; the precritical crack propagation length relative values show a linearly increasing trend with the increase of reinforcement ratios; the initial fracture toughness is not affected by the reinforcement ratios, but the unstable toughness has little effects by the reinforcement ratios.

• Periodical: Applied Mechanics and Materials (Volumes 438-439)
• Pages: 224-228
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.438-439.224
• Online since: October 2013
• Authors: Xiang Qian Fan, Shao Wei Hu, Jun Lu
• Keywords: Fracture Parameters, Reinforced Concrete (RC), Reinforcement Ratio, Three-Point Bending Beam

References

[1] X. Zhang, S. Xu, L. Hou, Influence of reinforcement ratio on flexural behavior of RUHTCC beams, China Civil Engineering Journal, 42 (2009) 16-24.

[2] S. Wen, D. D. L. Chung, Enhancing the vibration reduction ability of concrete by using steel reinforcement and steel surface treatments, Cement and Concrete Research, 30 (2000) 327-330.

DOI: 10.1016/s0008-8846(99)00238-0

[3] H. A. Razak, F. C. Choi, The effect of corrosion on the natural frequency and modal damping of reinforced concrete beams, Engineering Structures, 23 (2001) 1126-1133.

DOI: 10.1016/s0141-0296(01)00005-0

[4] C. Liang, T. Liu, D. Zou, Effect of bar arrangement on damping behavior of reinforced concrete, Journal of Building Materials, 14 (2011) 839-843.

[5] X. Fan, S. Hu, Influence of crack initiation length upon fracture parameter of high strength reinforced concrete, Applied Clay Science, 79 (2013) 25-29.

DOI: 10.1016/j.clay.2013.02.026

[6] X. Fan, S. Hu, J. Lu, Experimental research on double-K fracture toughness of non-standard three point bending concrete beam, Journal of Building Structures, 33 (2012) 152-157.