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Study of Effect of Rice Husk Ash Replacement for Fine Aggregates Concrete Block


Sammi Anjum , Rabindranath Tagore University, Bhopal; Vikrant Dubey, Rabindranath Tagore University, Bhopal; Kapil Soni, Rabindranath Tagore University, Bhopal


Rice Husk Ash, Fine Aggregates, Precast, Improvement, Stabilization, Subgrade, Waste Product, Paddy, Silica


RHA has been identified as an alternative to sand to reduce its impact and create properties like resistance. Rice husk ash (RHA) is a waste product produced in millions of tons of agricultural products. Over the years, waste managers have struggled to get rid of this agricultural waste. In todays world, protecting the environment is increasingly important. Parboil ash (RHA) from parboiling plants represents a serious threat to the ecosystem and disposal options are being considered. Furthermore, this material is super pozzolanic because it is rich in silica and has a silica content of approximately 85% to 90%. A good way to use this material is to obtain "high performance concrete" ensures that the concrete is well worked and durable. Concrete production consumes significant amounts of natural resources. This increased pressure to reduce sand consumption by using additional materials. Various parts of the rice husk ash were added to the sand and analyzed. The 2000 kN pressure testing machine is used for the pressure resistance test. A cube size of 150 x 150 x 150 mm was used. The maximum increase in compressive strength of RHA concrete, for example. H. 5.0% occurred after 28 days with a 5% replacement, while the compressive strength of RHA concrete decreased by 63.40% after 3 days with a 15% RHA replacement. It is clear that at the age of 28 days, the compressive strength of RHA concrete gradually increases for all replacement levels compared to concrete control. Strength development rate is highest up to 28 days of age at all RHA replacement levels. With 5% RHA in the sample, the concrete mix exhibits high flexural strength after 28 days, e.g. H. 5.14 N / mm². The divided tensile strength test of control concrete in class M25 provides 3.35 MPa. The tensile strength of concrete increases with the proportions of RHA. Concrete has a higher tensile strength, e.g. Eg H. 4.12 MPa relative to all other proportions and with a further increase in RHA content, the tensile strength at shear decreases. Using RHA in concrete increases costs by up to 1.78% compared to conventional concrete. The working capacity and strength of the concrete were determined by carrying out a pressure cube (150 mm × 150 mm × 150 mm), divided tensile test (cylinder with a diameter of 150 mm and a length of 300 mm) and an element of flexural strength (100mm × 100mm × 500mm) certainly. There is a good chance of obtaining good strength from concrete at a relatively higher cost, even if AF is replaced by RHA.

Other Details

Paper ID: IJSRDV8I70050
Published in: Volume : 8, Issue : 7
Publication Date: 01/10/2020
Page(s): 1-5

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