International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 13 Issue: 06 | Jun 2026
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p-ISSN: 2395-0072
DEVLOPMENT OF HYBRID CONCRETE USING BASALT AND RECORN 3s FIBERS Mepani Chandresh1, Aakash Suthar 2, Kishan Pala3 1ME, Student, Professor, Dept. of Civil of Engineering, LJ University, Ahmedabad, Gujarat
---------------------------------------------------------------------***--------------------------------------------------------------------Abstract-This study focuses on the development of hybrid concrete using basalt fibers and Recron 3s fibers to improve the strength and durability of normal concrete. Basalt fibers are used for increasing strength, while Recron 3s fibers help in reducing cracks and improving resistance to shrinkage.In this work, different percentages of fibers are added to the concrete mix, such as basalt fibers (0.2% to 0.5%) and Recron 3s fibers (0.1% to 0.3%). Various tests like compressive strength, split tensile strength, and flexural strength are carried out and compared with plain concrete.The expected results show that hybrid concrete gives better performance than normal concrete. Compressive strength may increase by about 10% to 20%, split tensile strength by 15% to 25%, and flexural strength by 20% to 30%. Crack formation is reduced significantly, and durability is improved.The optimum fiber content is expected around 0.3% basalt fiber and 0.2% Recron 3s fiber, where maximum strength and good workability are achieved.This hybrid concrete can be effectively used in structures like roads, bridges, and water tanks where high strength, crack resistance, and long life are required.
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1.2 Basalt Fibre • Basalt fiber is a natural fiber made from volcanic basalt rock and is used in concrete to improve strength and durability.. • It has high tensile strength and stiffness, which increases the tensile and flexural strength of concrete. • •
Key Words: : Hybrid Concrete, Basalt Fiber, Recron 3S Fiber, Compressive Strength, Split Tensile Strength, Flexural Strength, Durability, Crack Resistance.
In durability studies of concrete, HCl (Hydrochloric Acid) is used to check the acid resistance and durability of concrete. Concrete specimens are immersed in HCl solutions to study the effect of acidic conditions on strength, weight loss, and surface damage. This test helps to evaluate how well concrete can resist chemical attacks in aggressive environments such as industrial areas, sewage plants, and chemical industries.
Portland cement is commonly regarded as the main component of concrete, which is among the most frequently utilized construction materials. The widespread use of concrete as a building material is driven by the infrastructure advancements resulting from rampant urbanization and industrial development. Cement production is expected to grow from around 1.5 billion tons in 1995 to 2.5 billion tons by 2015. Globally, concrete is utilized in the construction of highways, bridges, buildings, runways, sidewalks, and dams. Given the necessity of cement in construction, it has a strong connection to the economy.
2 MATERIALS AND METHODOLOGY 2.1 Fine Aggerate (IS 2386 Part-1) Table 1 Properties of Fine Aggerate
1.1 Recorn 3s Fibre
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Basalt fiber reduces cracking, improves ductility, toughness, and impact resistance, making concrete less brittle. It offers excellent fire, heat, corrosion, and chemical resistance, making it suitable for harsh environmental conditions.
1.3 HCL
1 INTRODUCTION
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Recron 3S improves concrete quality by reducing shrinkage cracks, bleeding, segregation, and water penetration, thereby enhancing durability.. The recommended dosage is 0.1%–0.3% by weight of cement (about 600–900 g/m³ of concrete), and it is commonly used in slabs, pavements, roads, and waterretaining structures
Recron 3S fiber is a synthetic polyester fiber developed by Reliance Industries Limited to reduce cracking and improve concrete durability. It consists of fine, lightweight fibers that act as secondary reinforcement, controlling micro-cracks caused by plastic shrinkage.
Properties
Sand
Sieve analysis
Zone II
Fineness modulus
2.871
Specific Gravity
2.64
Water Absorption Bulk Density
1.77 1.62 (Loose) 1.76 (Compacted)
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