International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 11 Issue: 04 | Apr 2024
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p-ISSN: 2395-0072
Addition of sisal fiber to improve tensile strength of concrete. Manjula Khandekar1, Mrs. Madhulika Malviya2 Research Scholar, M. Tech (Structural Engineering) Assistant Professor, Dept. of Civil Engineering, Jhada Sirha Government Engineering College, Jagdalpur, C.G. ----------------------------------------------------------------- *** 1
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ABSTRACT - Concrete is the most widely used
1.1 FIBER REINFORCED CONCRETE (FRC)
Key Words: Conventional concrete, Sisal fiber, Sisal fiber reinforced concrete, tensile strength.
Fiber-reinforced concrete is a composite material that consists of conventional concrete which is reinforced by fibers. Fibers are the small reinforcing material that acts as a crack arrester for concrete. They can be uniformly or randomly distributed into the cement concrete matrix. There are different types of fibers available in the market based on their origin, shapes, sizes, etc. After the addition of fibers in concrete mix these fibers interlock and entangle around the aggregate’s particles. Addition of fibers provides good interlocking bond between ingredients of concrete or mortar so that chances of segregation of aggregates are reduced while placing and workability is reduced. They are widely used in providing strength to the civil structures such as beams, columns, slabs, walls etc.
1.INTRODUCTION
1.2 FACTORS AFFECTING FRC
Concrete is a composite mixture which includes cement, sand, coarse aggregate, and water. It acts good in compression than tension. Due to its high compressive strength and durability, many structures are constructed by concrete such as roads, buildings, tunnels, bridges, dams etc. Concrete structures can resist heavy load for long period of time without getting failure early. Fresh concrete can be casted into any shape and size.
There are some factors that may affects the properties of fiber-reinforced concrete (FRC)
construction material globally, owing to its versality, durability, and relatively low cost. However, despite its numerous advantages, concrete exhibits certain limitations, such as low tensile strength and brittleness. Fiber reinforced concrete has emerged as a promising solution to improve the performance of conventional concrete. This present paper deals with the addition of 1% of sisal fiber by the weight of cement to improve tensile strength of the concrete. Sisal fibers are the natural plant-based fiber which are produced from the Agave Sisalana plant. Research methodology involves the preparation, curing and testing of cylindrical specimens at 7, 14 and 28 days.
1. Types of fibers used. 2. Fiber Geometry 3. Amount of fibers used. 4. Aspect ratio of fibers 5. Distribution of fibers 6. Mixing and compaction of concrete
The main drawback of using concrete is its comparatively low tensile strength, to overcome this problem reinforcement is provided in the plain cement concrete. Mainly steel bars are provided as a reinforcement material to take loads in the tension zone. Plain cement concrete with steel reinforcement is provided is known as reinforced cement concrete (RCC).
Aspect Ratio is the important term when we talk about FRC. This is the ratio of length of fibers to its diameter.
1.3 ADVANTAGES OF FRC 1. 2. 3. 4. 5. 6. 7. 8.
Even before loading some internal microcracks are already present in the concrete these are mainly due the change in volume and drying shrinkage. The presence and development of these microcracks are responsible for inherent weakness of concrete. For the purpose of minimizing microcracks fibers are introduced in the concrete.
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Provides stiffness to the structure. Maintenance and repair cost is low. It gives high strength to concrete. Good durability. Resistance to corrosion and fire. Resistance to wear and tear. Increases Toughness. Provides long service life to the structure.
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