Partial Replacement Of Cement By Glass Fiber

Abstract

The growing demand for sustainable construction materials has led to extensive research on incorporating alternative materials that can enhance the mechanical performance and durability of concrete. One such promising material is glass fiber, which, when partially used as a replacement or additive to cement, improves the overall properties of concrete. This study examines the effect of replacing a portion of cement with glass fiber in varying proportions to evaluate its impact on compressive strength, tensile strength, workability, and durability of concrete.

Concrete is one of the most widely used construction materials; however, its inherently low tensile strength and brittle nature often limit its performance. To overcome these drawbacks and improve sustainability, the partial replacement of cement by glass fibres has emerged as a promising technique. Glass fibres possess high tensile strength, low density, and superior crack-resistance properties, which significantly enhance the mechanical performance of concrete. In this study, glass fibres are added as a partial replacement of cement at varying proportions to evaluate their effects on workability, compressive strength, tensile strength, and durability characteristics.

The inclusion of glass fibres helps to control micro-cracks, improve post-cracking behaviour, and reduce the overall cement consumption, thereby lowering carbon emissions. However, excessive fibre content may reduce workability and lead to fibre dispersion issues. The results indicate that optimal dosages of glass fibres can successfully improve the strength and service life of concrete, making it a more durable and sustainable construction material.