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Volume 14
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10.3390/min14101007
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Article

Influence of Steel and Poly Vinyl Alcohol Fibers on the Development of High-Strength Geopolymer Concrete

by
Shaik Hussain
1,
John Matthews
1,*,
Sudhir Amritphale
2,
Richard Edwards
1,
Elizabeth Matthews
3,
Niloy Paul
1 and
John Kraft
1
1
Trenchless Technology Center, Louisiana Tech University, Ruston, LA 71272, USA
2
Alchemy Geopolymer Solutions LLC, Ruston, LA 71272, USA
3
Civil Engineering & Construction Engineering Technology, Louisiana Tech University, Ruston, LA 71272, USA
*
Author to whom correspondence should be addressed.
Minerals 2024, 14(10), 1007; https://doi.org/10.3390/min14101007
Submission received: 30 August 2024 / Revised: 26 September 2024 / Accepted: 3 October 2024 / Published: 5 October 2024
(This article belongs to the Special Issue Geopolymers: Synthesis, Characterization and Application)
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Abstract

The present study focuses on the mechanical performance of steel and polyvinyl alcohol fibers embedded in the geopolymer matrix. A high-strength geopolymer concrete with fly ash, slag and silica fume as precursors and sodium hydroxide and sodium silicate solutions as activators has been tested for its strength in compression and flexure. The influence of fibers on flowability, long-term shrinkage and sulphuric acid attack on the geopolymer concrete has also been studied. The dosage of fibers was maintained at 1%, 2% and 3% by volume, and fibers of length 13 mm have been used in the study. Results indicate that slag with 3% steel fibers by volume had a predominant influence on the strength development of steel fiber-reinforced geopolymer concrete, yielding a compressive strength of 107 MPa after 28 days. Blast furnace slag resulted in increasing the shrinkage of concrete due to rapid gel formation owing to the presence of calcium ions, although the fibers helped reduce the shrinkage to some extent. The strength of steel fiber geopolymer concrete was superior to PVA fiber geopolymer concrete; however, after an acid attack, the strength of steel fiber geopolymer concrete was reduced more than PVA fiber geopolymer concrete due to the enhanced corrosion resistance of PVA fibers.
Keywords: steel fiber geopolymer; PVA fiber geopolymer; shrinkage; acid resistance; ambient curing steel fiber geopolymer; PVA fiber geopolymer; shrinkage; acid resistance; ambient curing

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MDPI and ACS Style

Hussain, S.; Matthews, J.; Amritphale, S.; Edwards, R.; Matthews, E.; Paul, N.; Kraft, J. Influence of Steel and Poly Vinyl Alcohol Fibers on the Development of High-Strength Geopolymer Concrete. Minerals 2024, 14, 1007. https://doi.org/10.3390/min14101007

AMA Style

Hussain S, Matthews J, Amritphale S, Edwards R, Matthews E, Paul N, Kraft J. Influence of Steel and Poly Vinyl Alcohol Fibers on the Development of High-Strength Geopolymer Concrete. Minerals. 2024; 14(10):1007. https://doi.org/10.3390/min14101007

Chicago/Turabian Style

Hussain, Shaik, John Matthews, Sudhir Amritphale, Richard Edwards, Elizabeth Matthews, Niloy Paul, and John Kraft. 2024. "Influence of Steel and Poly Vinyl Alcohol Fibers on the Development of High-Strength Geopolymer Concrete" Minerals 14, no. 10: 1007. https://doi.org/10.3390/min14101007

APA Style

Hussain, S., Matthews, J., Amritphale, S., Edwards, R., Matthews, E., Paul, N., & Kraft, J. (2024). Influence of Steel and Poly Vinyl Alcohol Fibers on the Development of High-Strength Geopolymer Concrete. Minerals, 14(10), 1007. https://doi.org/10.3390/min14101007

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