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Polymer Emulsion Modified Aramid Fibers Reinforced Cementitious Composites

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Abstract:

The influence of two kinds of polymer emulsions on the flexure strength of armid fibers reinforced cementitious composites has been investigated. The morphology of fractural interface of modified composites is conducted by scanning electron microscopy (SEM). Our experiment results indicated that the early flexural strengths of the epoxy emulsion and EVA emulsion modified aramid fiber reinforced cementitious composites have been improved significantly in comparison with that of unmodified composites, that is, an increase of 34.21%, 133% observed versus pristine samples curried for 28 d, respectively. The microscopic analysis on the interface between fibers, cement and aggregates revealed a novel rupturing and stripping mechanism. The efficacy of EVA emulsion modified samples is higher than that of epoxy modified ones.

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Periodical:

Advanced Materials Research (Volumes 821-822)

Pages:

1244-1247

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.821-822.1244

Citation:

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Online since:

September 2013

Authors:

Ying Wu*, Qian Yao Sun, He Fang, Lian Kong, Chun Ming Xu

Keywords:

Fibers Reinforced Composites, Mechanical Property, Microscopic Analysis, Polymer Emulsion

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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