Effect of Fiber on Mechanical Properties and Fire Resistance of C100 Ultra High Strength Concrete

Abstract:

It used conventional techniques and materials prepared high strength fiber reinforced concrete whose strength class is above C100 and it studied the effect of fiber content on the mechanical properties and elastic modulus. It also studied the fire resistance of fiber reinforced concrete. Results suggest that the strength of 28d concrete is above 100MPa and the highest strength is 126.4MPa. Under the same ratio conditions, the greater the volume content of steel fiber concrete flexural strength, the splitting tensile strength is higher. The steel fiber volume only affect elastic modulus of concrete little. When it heats to 300 °C, the no fiber concrete comminuted burst while the fiber concrete does not damaged at elevated temperatures up to 300 °C and continue to heat up, the crushing damage occurs at about 460 °C. Has not been damaged concrete specimens at 300 °C, the quality have emerged about 3% decline, while the compressive strength increased by 35%-52%, the highest strength reached 180.3MPa.

• Periodical: Key Engineering Materials (Volumes 629-630)
• Pages: 245-251
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.629-630.245
• Online since: October 2014
• Authors: Liang Huo*, Xi Qiang Lin, Guo You Li, Tao Zhang
• Keywords: Brittleness, Fiber Reinforced Concrete (FRC), Fire Resistance, Mechanical Property

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