Experimental Research and Strength Calculation of HybridSteel-polypropylene Fiber Reinforced Concrete

SHAN Liang; ZHANG Liang

doi:10.11988/ckyyb.20140858

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Journal of Changjiang River Scientific Research Institute ›› 2015, Vol. 32 ›› Issue (12) : 114-119. DOI: 10.11988/ckyyb.20140858

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Experimental Research and Strength Calculation of HybridSteel-polypropylene Fiber Reinforced Concrete

SHAN Liang^1,3,ZHANG Liang^2,3

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Abstract

On the basis of contrasting experiment results of concrete strength, numerical analysis is carried out to explore mechanical properties of hybrid steel-polypropylene fiber reinforced concrete(HSPFRC).The calculation formulas and relations among compressive strength, splitting tensile strength and axial tensile strength of HSPFRC are proposed based on the theory of composite material strength and the experimental observations. The undetermined parameters in the model are solved by means of statistical method,and the effects of volume fraction of fiber and length-diameter ratio on strength are taken into account for hybrid fiber reinforced concrete. In light of influence parameters of the strength formulas for different kinds of fibers, we can find that volume fraction of steel fiber and length-diameter ratio are vital to the strength of HSPFRC. The calculation formulas and dependence relations are well fitted, so they can be referenced for researchers in the same field and engineering application.

Key words

hybrid steel-polypropylene fiber reinforced concrete(HSPFRC) / strength formula / strength relationship / volume fraction / length-diameter ratio

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SHAN Liang,ZHANG Liang. Experimental Research and Strength Calculation of HybridSteel-polypropylene Fiber Reinforced Concrete[J]. Journal of Changjiang River Scientific Research Institute. 2015, 32(12): 114-119 https://doi.org/10.11988/ckyyb.20140858

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