An Experimental Analysis of Reinforced Mechanism of Polypropylene Fiber Reinforced EPS Concrete

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The reinforced mechanism with polypropylene fiber reinforced EPS concrete was researched, based on mechanical experiments and photograph analysis of the Scanning Electron Microscopy with HITACHIS-3400N. Polypropylene fiber with 15-mm length and six volume fractions of 0%, 0.10%, 0.14%, 0.18%, 0.2% and 0.25% were used, and consequently, the resultant effects on the mechanical behavior of these concretes were analysed. The results demonstrate that compressive strength of EPS concretes increase with the rise of the percentage of the fiber volume. It is shown that using 0.15~0.2% polypropylene fiber in cement mixture greatly increases compressive strength. Scanning electron microscope images show that the reason for this improvement is that polypropylene fiber can increase bonding strength at the matrix–inclusion interface.

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463-466

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November 2012

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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