Experimental Study on Axial Tensile Performance of Low Volume Fraction of Ternary Hybrid Fiber Reinforced Concrete

Abstract:

In order to acquire axial tensile stress-strain curve of HFRC, specimens of equal cross-sections with embedded screw and pasted with carbon fiber cloth in corresponding length were tested on closed-loop electro-hydraulic servo testing machine which a subsidiary rigid frame was attached to. The effect of fiber volume, steel fiber slenderness ratio, steel fiber type and active admixture on the tensile properties of HFRC with low volume fraction was studied. The results indicate that when total volume proportion is less than 1% the first crack strength and ultimate tensile strength of HFRC can increase more than 15% and about 40% , respectively, the difference of effect of arched steel fiber and crimped steel fiber on the tensile behavior is small. The tensile behavior of HFRC is the best with a combination of slenderness ratio of 80 and 47.1kg/m³ arched steel fiber, 2.6kg/m³ macro-polypropylene fiber and1.0kg/m³ dura fiber and 10% .

• Periodical: Applied Mechanics and Materials (Volumes 511-512)
• Pages: 28-31
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.511-512.28
• Online since: February 2014
• Authors: Bo Ru Zhou, Dong Tao Xia*, Xiang Kun Liu
• Keywords: Hybrid Fiber, Splitting Strength, Stress-Strain Curve, Tensile Strength

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