A comprehensive study on advanced strategies to improve the performance, durability, and flexible behavior of cementitious materials

ABSTRACT

Because of its better strength-to-weight ratio, moldability, fracture resistance, and ability to employ local materials, ferrocement is becoming a more and more popular building material. An environmentally friendly substitute is provided by geopolymer technology, which uses alkali solutions to activate materials high in silica and alumina. This study focuses on geopolymer-based ferrocement slabs, exploring their flexural properties and substituting geopolymer mortar for cement to enhance performance. This study investigates the effects of varying percentages of fly ash (ranging from 0% to 20%), GGBS (ranging from 80% to 100%), and 2% of nano silica on the properties of ferrocement geopolymer concrete. Flexural behavior are tested using Carbon Fiber Reinforced Polymer (CFRP) wound wire mesh. Fly ash, a coal plant byproduct, is combined with GGBS to improve strength and setting. A 1:2 mortar ratio, containing sodium silicate, sodium hydroxide, GGBS and fly ash, is utilized. Optimal results are achieved with 80% GGBS addition, despite higher strength observed with 100% GGBS in fly ash. Nano silica further enhances performance, with a significant 240% strength increase observed with 1.5% nano silica and 80% GGBS. The study concludes by identifying superior combinations for practical application, considering specimen permeability, acid resistance, and heat resistance.

Keywords:
Ferrocement; Geopolymer; GGBS; Flyash; Carbon Fiber Reinforced Polymer (CFRP)