This study investigates the mechanical performance of geopolymer concrete reinforced with alkali-resistant glass fibers, focusing on its stress-strain characteristics and overall mechanical abilities. Geopolymer concrete (GPC), recognized for its eco-friendly properties, promises significant reductions in carbon dioxide emissions associated with traditional cement production. The research aims to provide insights for optimizing GPC performance and establishes methodologies for future studies.
Researchers conducted various tests to assess the mechanical properties of GPC with varying amounts of glass fibers. The study included measuring split tensile strength, compressive strength, and flexural strength across different samples reinforced with glass fibers at specific volume fractions. Initial findings revealed considerable enhancements, particularly at 0.3% fiber volume, where peak stresses increased significantly.
Utilizing Response Surface Methodology, scientists effectively modeled the stress-strain behavior of GPC, integrating factors like fiber length and volume ratios. The experiments demonstrated improved ductility and resilience, traits traditionally lacking in GPC formulations. Of note, the research highlights the importance of volume fractions, indicating optimal mechanical properties at specific fiber dosages.
This work is particularly relevant as the construction industry increasingly shifts toward sustainable practices amid growing environmental concerns. Traditional Portland cement contributes approximately 6% of global greenhouse gas emissions due to its energy-intensive production process. By advancing geopolymer concrete technology and emphasizing the use of industrial residue materials, this research provides valuable solutions for reducing harmful emissions.
The results indicate the inclusion of glass fibers aids the GPC significantly, improving both peak stresses and strain capacities. For example, one of the key observations was the performance improvement, with peak stresses rising by 25–45% when optimally reinforced. This suggests potential applications where enhanced mechanical properties of GPC could redefine industry standards for building materials.
Through rigorous testing and validation, the research team also introduced analytical models for predicting the complete stress-strain curves for GPC reinforced with glass fibers. These models, developed from experimental data, facilitate the design of future concrete mixtures, aligning with practical engineering demands and stress management strategies.
The findings from this groundbreaking study not only contribute to the academic community's knowledge of fiber-reinforced concrete materials but also signify the practical applications of these advancements within the building industry. With the potential for widespread adoption, this research could lead to more sustainable construction practices, benefiting both the environment and the economy.
Future studies may explore alternative fiber types or mixtures to refine GPC properties or investigate scalability for mass-production applications. The challenges of workability and fiber distribution remain key areas for improvement, especially upon varying the volume ratios of fibers. Nevertheless, the high performance and durability of geopolymer concrete provide a pathway for its adoption as the construction industry seeks innovative solutions to meet sustainability goals.