Concrete is the most widely used construction material in the world it is a mixture of cement, sand, coarse aggregate and water. Storage and safe disposal of industrial by product such as fly ash, SF and rice husk ash is a huge problem everywhere, reuse of these waste eliminates/reduce the problem. This experiment fine aggregate is replaced 0%,10%,20%,30% and 40% of its weight by rice husk ash and cement is replaced 20% of its weight by fly ash & SF in all concrete mix and there effects are studied.In this experiment the compressive strength of the concrete is increased. The compressive strength of the concrete by replacing the 20% sand by RHS and 20% cement by the 19% fly ash & 1% SF the strength increases at 32.52 to 37.8 in M- 30 concrete. After adding the RHA the strength is Decreases. The flexure strength of the concrete by replacing 20% sand by RHS and 20% cement by the 19% fly ash & 1% SF the strength increases at 5.2 to 6.69 in M-30 concrete. After adding the RHA the strength is Decreases Thus, flexure strength is also increase by including the RHS. It also reduces the consumption of the cement. The split tensile strength of the concrete by replacing 20% sand by RHS and 20% cement by the 19% fly ash & 1% SF the strength increases at 3.09 to 4.49 in M-30 concrete. After adding the RHA the strength is Decreases. Hence by adding the fly ash with stone dust is also increase the tensile strength of the concrete. Hence saving in cost is two ways cost of sand and cement.
Rice Husk Ash, Fly Ash, Sisal Fiber, Fine Aggregate, Compressive Strength, Tensile Strength and Flexural Strength
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