Performance Evaluation of Geopolymer Concrete with Waste Glass Powder and Alkaline Activator
Authors: *Afolabi, O.E., Dahunsi, B.I.O., Labiran, J.O., Hassan, D.E. And Sanni, A.
DOI Info: http://doi.org/10.5281/zenodo.18061617
ABSTRACT
In this study, the performance of geopolymer concrete incorporating waste glass powder (WGP) as a supplementary cementitious material and an alkaline activator was evaluated. Geopolymer concrete, known for its eco-friendliness and ability to utilize industrial by-products, was assessed for its mechanical properties, durability, and sustainability aspects. The study explored the impact of varying sodium hydroxide (NaOH) molarities (10M, 12M, and 14M) on the strength properties of WGP geopolymer concrete, alongside different curing periods (7, 14, and 28 days). A notable trend was observed in the slump values, which decreased from 67 mm for the 10M NaOH solution to 0 mm for the 14M solution. This reduction indicates lower workability and increased stiffness as molarity increases, likely due to accelerated setting and reduced fluidity. Among the mixes, the 12M NaOH mixture showed the most promising compressive strength, with values of 10.50 MPa, 13.60 MPa, and 17.07 MPa at 7, 14, and 28 days, respectively. This demonstrates the potential for the 12M mixture to achieve higher strength with extended curing, highlighting its applicability in sustainable construction.
Affiliations: Department of Civil Engineering, Faculty of Technology, University of Ibadan, Oyo State, Nigeria.
Keywords: Waste Glass Powder, Alkaline Activator, Geopolymer Concrete, Compressive Strength, Molarity
Published date: 2025/12/30
