International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 12 Issue: 05 | May 2025
p-ISSN: 2395-0072
www.irjet.net
Experimental Investigation on Partial Replacement of Cement with Recron Fiber and Wooden Swadust in high Strength Concrete Dhiren Gondaliya1, Aakash Suthar2, Dharam Unadkat3 1ME. Student, LJ. University.
2 Professor, Dept. of Civil Engineering, LJ. University, Ahmedabad, Gujarat.
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Abstract - The growing concern over the environmental
replacing cement with fibers, it is possible to improve the material's mechanical properties, such as tensile strength, crack resistance, and durability, while also lowering its environmental impact. This thesis investigates the potential of fiber-reinforced concrete as a sustainable solution to reduce CO₂ emissions in concrete production.
impact of cement production, which contributes significantly to CO₂ emissions, has prompted the exploration of alternative materials to partially replace cement in concrete. This experimental investigation evaluates the effects of replacing cement with Recron fiber (synthetic polymer fiber) and wooden fiber (natural fiber) on the mechanical and durability properties of concrete. Concrete mixes were prepared by partially replacing cement with 1%, 0.75% and 5%,10% by weight of Recron and wooden fibers, respectively. The key properties assessed include compressive strength, flexural strength, split tensile strength, workability, and durability (water absorption).
1.1 Recron fiber
The results indicated that the incorporation of both Recron and wooden fibers improved the mechanical properties of concrete up to a 2% replacement level. Recron fiber exhibited a more pronounced enhancement in compressive, flexural, and split tensile strengths compared to wooden fiber. Beyond 2% replacement, a decline in strength was observed, likely due to a reduction in the effective cement content and the tendency of fibers to cluster. Additionally, both types of fibers contributed to improved durability, as evidenced by reduced water absorption.
1.2 Wooden Sawdust Wood sawdust is a fine byproduct created during the cutting, grinding, or drilling of wood. It consists of small wood particles and is commonly produced in sawmills, woodworking shops, and construction sites. Though often considered waste, sawdust is used in various applications such as:
Key Words: Fresh Concrete Test, Hardened Concrete Test, Workability, Split Tensile Strength, Durability Test(HCL).
1. INTRODUCTION Concrete is a fundamental material in the construction industry, valued for its strength, durability, and versatility in a wide range of applications, from residential buildings to large infrastructure projects. Its primary components— cement, aggregates, and water—combine to form a durable material that has become the foundation of modern construction. However, the production of cement, a key ingredient in concrete, is responsible for a significant environmental impact, contributing nearly 8% of global CO₂ emissions. This has raised concerns about the sustainability of concrete and the need to reduce its carbon footprint.To address these environmental challenges, researchers are exploring alternative materials and methods to reduce the reliance on cement without compromising concrete's performance. One promising approach is the incorporation of fibers into concrete, resulting in fiber-reinforced concrete (FRC). By partially
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Recron fiber in concrete refers to synthetic fibers made from polypropylene that are added to concrete mixes to improve its properties. Recron fibers are commonly used in fiber-reinforced concrete (FRC), a type of concrete that includes fibers to enhance its strength, durability, and crack resistance. Recron fibers are particularly useful in applications like pavements, industrial floors, precast elements, and construction exposed to heavy wear and harsh weather conditions. The use of these fibers reduces the reliance on steel reinforcement and enhances the performance of the concrete, contributing to its sustainability and cost-effectiveness.
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Lightweight: Wooden saw reduce the overall weight of concrete, making it suitable for applications where a lighter mix is required. Improved Insulation: Wooden saw can provide better thermal and acoustic insulation, making the concrete more energy-efficient. Eco-Friendly: Using waste wood saw promotes sustainability by recycling wood by-products, reducing environmental waste. Cost-Effective: Wooden saw are often cheaper than synthetic alternatives, making them a cost-effective option for concrete reinforcement. Crack Resistance: These saw dust can help reduce plastic shrinkage cracks in concrete, improving its overall durability.
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