Sustainable Geopolymer Concrete: Performance Enhancement with Fly Ash, GGBS, and Zeolite Powder

Authors:
S. Vijayan, D. Senthil Velan, Ahmed Bchatnia, S. Manikandan

Addresses:
Department of Civil Engineering, SRM Institute of Science and Technology, Ramapuram, Chennai, Tamil Nadu, India. Department of Mathematics, Tunis El Manar University, Tunis, Tunisia. Department of Robotics and Automation Engineering, Dhaanish Ahmed College of Engineering, Chennai, Tamil Nadu, India.

Abstract:

Given the growing concerns over the environmental impact of Ordinary Portland Cement (OPC), this study explores geopolymer concrete (GPC) as a sustainable alternative. By utilising industrial byproducts such as fly ash, Ground Granulated Blast-Furnace Slag (GGBS), and Zeolite Powder, the research aims to develop an eco-friendly concrete mix that reduces carbon emissions without compromising performance. These alumino-silicate-rich materials were activated using a combination of sodium hydroxide and sodium silicate, forming a strong binder through geopolymerization. Various mix designs were prepared and tested under ambient curing conditions to reflect real-world practices. Key performance aspects, including compressive strength, workability, and water absorption, were evaluated. The study found that the right blend of materials significantly improves durability, reduces porosity, and enhances overall strength. The results show that geopolymer concrete can effectively replace OPC in many structural applications. Its use not only supports sustainable construction but also promotes the reuse of industrial waste, aligning with modern environmental goals. This research highlights GPC as a practical and high-performance alternative in today’s construction industry.

Keywords: Geopolymer Concrete; Industrial Byproducts; Fly Ash; Zeolite Powder; Sustainable Construction; Ambient Curing; Structural Applications; Compressive Strength; Ordinary Portland Cement (OPC).

Received on: 19/10/2024, Revised on: 26/12/2024, Accepted on: 09/02/2025, Published on: 05/06/2025

DOI: 10.69888/FTSSM.2025.000407

FMDB Transactions on Sustainable Structures and Materials, 2025 Vol. 1 No. 1, Pages: 45-56

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