Abstract
The present paper focuses on compressive strength of Ultra High Performance Fiber Reinforced Concrete (UHPFRC) cube and cylinder under compression testing machine, the experimental determination of test results shows +5% variation in compressive strength, differs from normal concrete +20% the ascending in strength development at an increased age under an elevated temperature of the material is identified with addition of hooked end steel fiber. In this study, the optimized mix design developed and the conversion ratios determined to develop relationship between cube and cylinder. The comparison between mean compressive strength ratio for cube and cylinder has been presented to determine high compressive strength. The research work is carried out to achieve enhanced target compressive strength 180 N/mm2.
Highlights
The Ultra High Performance Fiber Reinforced Concrete (UHPFRC) is cement based composite material
The present paper focuses on compressive strength of Ultra High Performance Fiber Reinforced Concrete (UHPFRC) cube and cylinder under compression testing machine, the experimental determination of test results shows +5% variation in compressive strength, differs from normal concrete +20% the ascending in strength development at an increased age under an elevated temperature of the material is identified with addition of hooked end steel fiber
Bache (1987) [5] developed a densified small particles (DSP) concept for densely compacted granular matrix approach by use of silica fume and super plasticizer based on the water solubility theory of polymers and fine particles mainly consists of silica to improve rheological properties of cement mixture with low water cement ratio
Summary
The UHPFRC is cement based composite material. The steel fibers are added to decrease the brittleness and increase compressive strength, the energy absorption capacity of the material increased by use of densified materials and special treatment, such as heat curing, pressure and extensive vibration, the structural geometry of hooked end steel fibers optimizing the matrix fiber interface properties and enhance the more compressive strength. In UHPFRC the existence of steel fiber and exposure to temperature enhances the strength variation in ±5% in cube and cylinder ratio. During the past 30 years the use of steel fiber reinforcement in concrete has taken places a considerable development to achieve higher compressive strengths to carry heavier loads throughout the life of the structure, suitable for adverse environmental conditions, aesthetic requirements and architectural appearance is most required in construction sector. R. Yu. P Spiesz H.J.H. Brouwers (2014) [19] developed densely compacted concrete mix design based on Andersen and Andersen packing model with addition of steel fiber 1% - 2% by volume of concrete Kazemi and Lubell (2012) [20] observed that cube specimens exhibited higher compressive strength compared with cylinder specimens H. Chandrashekar Rao (2015) [22]
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