Experimental Analysis on Geopolymer Self-Cleaning Concrete Utilizing Fly Ash and GGBS - A Literature Review

Author

Tejendra Prajapati, Gaurav Jhanji

Abstract

 An increasing need for eco-friendly and long-lasting construction materials has pushed the industry to find alternatives to Portland cement concrete, such as geopolymer concrete. Geopolymer self-cleaning concrete based on fly ash and ground granulated blast furnace slag (GGBS) is investigated in this study for its mechanical properties, durability, and self-cleaning efficacy. Sodium hydroxide (NaOH) and sodium silicate (Na₂SiO₃) form an alkaline solution that activates fly ash and GGBS, the primary aluminosilicate binders. Titanium dioxide (TiO₂) is a photocatalytic substance that may self-clean when exposed to light and undergoes photocatalytic oxidation. The workability, split tensile strength, compressive strength, and water absorption are all tested in this study, along with the effects of various fly ash-GGBS ratios and TiO₂ doses. An evaluation of the self-cleaning capability is done by measuring the degradation of specified surface pollutants or stains under regulated light exposure. The study's overarching objective is to identify the optimal combination of fly ash, GGBS, alkaline activator, and TiO₂ for improving the surface-cleaning capability and structural performance of concrete. Potential benefits of the proposed geopolymer self-cleaning concrete include reduced usage of conventional Portland cement, increased durability, utilization of industrial waste, and promotion of low-maintenance, environmentally friendly construction practices. This paper discusses geopolymer self-cleaning concrete and provides a concise overview of the topic. The self-cleaning property of the photocatalytic concrete is determined by observing the discoloration of RhB (Rhoda mine dye) under ultraviolet light. This test is widely recognized as a standard for self-cleaning cementitious materials. The results will shed light on the feasibility of alternatives to conventional concrete, and the photocatalytic action will allow the concrete to double as a green self-cleaning agent. This page also provides a general outline of self-cleaning concrete. The major purpose of this research was to determine the pros and cons of incorporating fly ash and GGBS buildup into concrete by comparing its properties to those of the control mix.

Keywords

Geopolymer Concrete, Self Cleaning Concrete, Green Concrete, Photocatalytic action, Compressive Strength, Tensile Strength, Flexural Strength.

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References

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