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     Research Journal of Applied Sciences, Engineering and Technology


Fracture Properties of Polypropylene Fiber Reinforced Concrete Containing Fly Ash and Silica Fume

Peng Zhang and Qingfu Li
School of Water Conservancy and Environment Engineering, Zhengzhou University, Zhengzhou 450001, China
Research Journal of Applied Sciences, Engineering and Technology  2013  2:665-670
http://dx.doi.org/10.19026/rjaset.5.5006  |  © The Author(s) 2013
Received: May 30, 2012  |  Accepted: June 21, 2012  |  Published: January 11, 2013

Abstract

A parametric experimental study has been conducted to investigate the effect of polypropylene fiber on the fracture properties of concrete containing fly ash and silica fume, with five fiber volume fraction (0.04, 0.06, 0.08, 0.1 and 0.12%) used. The results indicate that the addition of polypropylene fiber has greatly improved the fracture parameters of concrete composite containing 15% fly ash and 6% silica fume, such as fracture toughness, fracture energy, effective crack length, maximum mid-span deflection, the critical crack opening displacement and the maximum crack opening displacement of the three-point bending beam specimens. When the fiber volume fraction increases from 0 to 0.12%, the fracture parameters increase gradually with the increase of fiber volume fraction. The variation rules of the fracture parameters indicate that the capability of polypropylene fiber to resist crack propagation of concrete composite containing 15% fly ash and 6% silica fume is becoming stronger and stronger with the increase of fiber volume fraction with the fiber volume fraction not beyond 0.12%.

Keywords:

Concrete, fly ash, fracture property, polypropylene fiber, silica fume,


References


Competing interests

The authors have no competing interests.

Open Access Policy

This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Copyright

The authors have no competing interests.

ISSN (Online):  2040-7467
ISSN (Print):   2040-7459
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