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seminars on natural fibre reinforced concrete pdf - musthu - 08-16-2017 seminar on natural fibre reinforced concrete pdf Abstract Fiber-reinforced concrete (FRC) is concrete containing fibrous material which increases its structural integrity. It contains short discrete fibers that are uniformly distributed and randomly oriented. Fibers include steel fibers, glass fibers, synthetic fibers and natural fibers each of which lend varying properties to the concrete. In addition, the character of fiber-reinforced concrete changes with varying concretes, fiber materials, geometries, distribution, orientation, and densities. Introduction Natural fibres such as wood and vegetable fibre offer many advantages such as renewability, recyclability low specific gravity and high specific strength. In Malaysia most of the studies only focused on producing EFB as MDF and pulp and paper products. This paper reviews the development of natural fibres for building material and discusses the performance of oil palm empty fruit bunch (EFB) reinforced concrete roof slates produced in a preliminary experiment. Oil palm EFBs were used partially as cement replacement at levels of 0.5% and 1.0% and compared with the control specimens (0% fibre content). From the preliminary experiment, the physical properties of EFB roof slates were evaluated. Results show flexural strength and density decreased with increased fibre contents that were mixed with various water cement ratio. However, the results still exceeded the level set by the ASTM of 4 N/mm2. The preliminary results from the experiment suggest that oil palm EFBs have a potential to be a material component of reinforced mortar roofing slates with the appropriate water cement ratio and concrete mix. Fiber reinforced concrete is used for: Industrial flooring Sprayed concrete Slender structures (usually in precast plants) Fire resistant structures mortar applications (rehabilitation) Types of Fiber-Reinforced Concrete Steel Fiber-Reinforced Concrete Glass Fiber Reinforced Concrete Synthetic Fibers Natural Fiber Reinforced Concrete Benefits Improve mix cohesion, improving pump ability over long distances Improve freeze-thaw resistance Improve resistance to explosive spelling in case of a severe fire Improve impact resistance Increase resistance to plastic shrinkage during curing Effects of fiber reinforced concretes Improved durability of the structure Increased tensile and flexural strengths Higher resistance to later cracking Improved crack distribution Reduced shrinkage of early age concrete Increased fire resistance of concrete Negative influence on workability Improved homogeneity of fresh concrete |