Experimental Investigation Workability of Partial Replacement of Cement by Marble Dust and Rice Husk Ash in addition of Sisal Fiber

Abstract

Concrete is a versatile material which has the possibility of moulding into the any geometric shapes which can be manufactured easily. It is a mixture of cement, fine aggregate, coarse aggregate and admixtures. Concrete is the most important construction material which is widely used throughout the world. Concrete is relatively strong in compression but it is weak in tension. To improve the tensile strength of concrete various types of fibers are added. Fiber reinforced concrete is improving the tensile strength minor crack arrested in this
concrete. Fiber reinforced concrete is a harden concrete that is placed by means of its own weight. In this concrete is a partial replacement of the marble dust and rich husk ash with cement by sisal fiber. Rice Husk Ash and Marble Dust Powder (MDP) are the major form of wastes. MDP can be used as a developing binding material that will allow the concrete industry to optimize material use, produce financial profit and construct structures that will be strong and durable. More than 50% of MDP is comprised of oxides of Silica and hence it can be used as a replacement of cement. As Rice husk ash is a very good pozzolonic material
it is used as a partial replacement for cement. The present study was carried out to check the fresh and hardened properties of sisal fiber reinforced Fiber Reinforced concrete (SFRC) with different percentage of fiber addition. The Materials was additional strength increase to the partial replacement of cement in marble dust powder and rice husk ash. The various proportion of use to the partial replacement in totally 30% inn concrete In this alternate material replacement percentage of 0%,10%,15%,20% and 30%in marble dust powder and Decreased to percentage 30%,20%,15%,10%,0%in RHA by using M20 mix design cube; cylinder and prisms were casted. The specimens were subjected to harden concrete tests. The specimens were tested after curing period of 7 days, 14 days and 28 days. The optimum fiber volume fraction for compressive strength, split tensile strength and flexural strength of fibers improved with the increase in volume fraction of fibers. The tests results indicated that the sisal fibers were effective in improving the strength of concrete.