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http://dx.doi.org/10.14190/JRCR.2020.8.4.458

Compressive and Tensile Behaviors of High Performance Hybrid Fiber Reinforced Concrete  

Kwon, Soon-Oh (Quality Management Team, Sampyo P&C)
Bae, Su-Ho (Department of Civil Engineering, Andong National University)
Lee, Hyun-Jin (Department of Civil Engineering, Andong National University)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.8, no.4, 2020 , pp. 458-466 More about this Journal
Abstract
The purpose of this experimental research is to evaluate the compressive and tensile behaviors of high performance hybrid fiber reinforced concrete(HPHFRC) using amorphous steel fiber(ASF) and polyamide fiber(PAF). For this purpose, the HPHFRCs using ASF and PAF were made according to their total volume fraction of 1.0% for target compressive strength of 40MPa and 60MPa, respectively. And then the compressive and tensile behaviors such as the compressive strength, compressive toughness, direct tensile strength, and stress-strain characteristics under compressive and tensile tests were estimated. It was observed from the test results that the compressive strength of HPHFRC was slightly decreased than that of plain concrete, but the compressive toughness, compressive toughness ratio, and direct tensile strength of HPHFRC increased significantly. Also, it was revealed that the plain concrete showed brittle fracture after the maximum stress from the stress-strain curves, but HPHFRC showed strain softening.
Keywords
High performance hybrid fiber reinforced concrete; Stress-strain characteristics; Compressive toughness; Direct tensile strength; Strain softening;
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