Influence of Activator Solution Formulation on Fresh and Hardened Properties of Low-Calcium Fly Ash Geopolymer Concrete

Authors

Carlos Montes, Post Doctoral Fellow, Alternative Binder Research Laboratory, Louisiana Tech University, Ruston, LA 71272, USA
Erez N. Allouche, Associate Professor of Civil Engineering and Research Director, Alternative Binder Research Laboratory, Louisiana Tech University, Ruston, LA 71272, USA

Document Type

Article

Abstract

The effect of the composition of activator solutions on fresh and hardened properties of geopolymer concrete was investigated. Research variables included liquid sodium silicate product (DH, NH, and StarH), sodium hydroxide molar concentration (6, 10, and 14), and sodium silicate–to–sodium hydroxide ratio (1, 2, and 3). Response variables were compressive strength, corrosion resistance expressed as remaining compressive strength and mass loss, and flowability. Results were analyzed using Minitab statistical software. Findings suggest that activator solution formulation has a significant effect on the properties of the resulting geopolymer binder. The experimental design used was found effective in establishing the optimum activator solution formulation for a given fly ash stockpile to be used for an application with specific performance requirements.

First Page

1

Last Page

9

DOI

https://doi.org/10.4177/CCGP-D-11-00017.1

Volume

4

Publication Date

1-1-2012

Recommended Citation

Montes, Carlos, and Erez N Allouche. 2012. “Influence of Activator Solution Formulation on Fresh and Hardened Properties of Low-Calcium Fly Ash Geopolymer Concrete.” Coal Combustion and Gasification Products 4 (1): 1–9. https://doi.org/10.4177/CCGP-D-11-00017.1.