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Study on Mechanical Properties of High Strength Concrete Using Coconut Shell as Coarse Aggregate

Author(s): M. Santhosh Kumar, V. R. Prasath Kumar and K. Gunasekaran

Lightweight aggregate concrete (LWAC) is an important and versatile material in modern construction. Many architects, engineers, and contractors recognize the inherent economies and advantages offered by this material, as evidenced by the many impressive lightweight concrete (LWC) structures found throughout the world. Use of mineral admixture in conventional concrete and light weight concrete mix has made a remarkable achievement in development and design of high strength in conventional concrete (HSC) and light weight concrete (HSLWAC). The use of high strength concrete (HSC) has many advantages such as a reduction in beam and column sizes, increased building height, greater span-depth ratio for beams in pre-stressed concrete construction and improved durability of marine concrete structures.It can be said that HSLWACs have a significant advantage over normal weight HSC because of the reduction of dead load and construction cost. Among many mineral admixtures available, Ground granulated blast furnace slag (GGBS), Silica fume (SF) andAlccofine(AF) are added to gain the high strength properties. Mineral Admixtures are added to Portland cement concrete to improve its properties, in particular its compressive strength, bond strength, and abrasion resistance. GGBS 50% and Silica fume or Alccofine 15% are added additive to cement and find the Mechanical properties such as compressive strength, flexural strength, split tensile strength and impact resistance can be studied.

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