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Journal of Polymer & Composites Review Article Special issue

Enhancing Mechanical and Thermal Performance of M30 Concrete with Carbon Fibre Reinforcement

  1. K.V.G. D Prasad Department of civil engineering, KL University
  2. A.Aravindan Department of civil engineering, KL University
  3. Nadigatla Naveen Kumar Department of civil engineering, KL University

Abstract

This study examines the influence of carbon fibre incorporation on the mechanical properties of M30-grade concrete. A series of experimental investigations were conducted to assess the effects of varying carbon fibre content on compressive, split tensile, and flexural strengths. The results indicate a significant enhancement in mechanical performance with the inclusion of carbon fibres, with the optimum fibre dosage identified as 0.75%. At this content, the concrete achieved a peak compressive strength of 37.76 N/mm² at 7 days and 57.51 N/mm² at 28 days, demonstrating substantial improvements over conventional M30 concrete. Furthermore, the thermal performance of carbon fibre-reinforced concrete was evaluated by subjecting specimens to a temperature of 100°C. The heated samples exhibited superior mechanical properties, attaining a maximum 28-day compressive strength of 64.84 N/mm², split tensile strength of 10.64 N/mm², and flexural strength of 17.39 N/mm². These findings suggest that carbon fibre reinforcement enhances both strength and thermal resistance, making it highly suitable for structural applications exposed to elevated temperatures and high-stress conditions. The study underscores the potential of carbon fibre-reinforced concrete in modern construction, particularly for infrastructure requiring enhanced durability and resilience. Its superior mechanical properties and thermal stability position it as a promising material for use in high-performance structures, including industrial facilities, transportation infrastructure, and fire-resistant buildings. Future research should further explore the long-term durability and microstructural behaviour of carbon fibre-reinforced concrete under extreme environmental conditions.

Keywords

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