Damage Tolerance of Reinforced Concrete (RC) Beams with a Layer of PE Fiber Reinforced Strain-Hardening Cement Composite (PE-SHCC)

Abstract:

This work evaluated the applicability of polyethylene (PE) fiber reinforced strain-hardening cement composite (PE-SHCC) layer at the bottom of reinforced concrete (RC) beams to improve the flexural performance and cracking behavior. PE-SHCC material with specific compressive strength of 70MPa was reinforced with 1.5% PE fibers at the volume fraction. Four RC beams with cross-section of 130 x 170mm and length of 1,460mm were made and tested under four-point monotonic loading. Three beams were layered with PE-SHCC material and one whole RC beam was a control specimen for comparison. Principal variable is the thickness of PE-SHCC layer; 20, 40 and 60mm that are equivalent to 11, 23 and 35% of beams depth. Experimental results indicated that the addition of PE-SHCC layer enhanced the crack-damage mitigation of RC beams and improve the structural behavior, such as strength and ductility, of RC beams.

• Periodical: Applied Mechanics and Materials (Volume 372)
• Pages: 219-222
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.372.219
• Online since: August 2013
• Authors: Yeon Jun Yun, Seok Joon Jang, Hyun Do Yun
• Keywords: Crack-Damage Tolerance, Ductility, Reinforced Concrete (RC) Beam, Strain-Hardening Cement Composite (SHCC)

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