Effects of Short PAN Fiber Contents on Mechanical Properties of Metakaolin-Blast Furnace Slag Based Geopolymers

Xin Chun Luo; Chang An Wang

doi:10.4028/www.scientific.net/KEM.697.608

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 697Effects of Short PAN Fiber Contents on Mechanical...

Effects of Short PAN Fiber Contents on Mechanical Properties of Metakaolin-Blast Furnace Slag Based Geopolymers

Abstract:

This paper investigated mechanical properties and microstructure of metakaolin/slag based geopolymers reinforced by short polyacrylonitrile (PAN) fibers. The results showed that addition of short PAN fibers had no effect on the phase composition of the geopolymer but could strengthen and toughen the geopolymers remarkably. When the content of short PAN fibres was 0.8wt%, the geopolymers showed the highest compressive strength (99.84MPa) and flexural strength (13.76MPa). The addition of PAN fibers enlarged the work of fracture of the geopolymers and changed the fractural behavior from brittle to non-brittle fractural mode through fiber bridging and pull-out effects.

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Periodical:

Key Engineering Materials (Volume 697)

Pages:

608-611

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.697.608

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Online since:

July 2016

Authors:

Xin Chun Luo, Chang An Wang*

Keywords:

Geopolymer, Mechanical Properties, Polyacrylonitrile Fibers, Reinforcing

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