International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 10 Issue: 04 | Apr 2023
p-ISSN: 2395-0072
www.irjet.net
Study of partial replacement of cement by barite powder and silica fume in self compacting concrete Anju T .U.1, Nikhil R.2 1 M. Tech student, Structural Engineering, Universal Engineering College, Thrissur, Kerala
2Assistant professor, Department of Civil Engineering, Universal Engineering College, Thrissur, Kerala
---------------------------------------------------------------------***--------------------------------------------------------------------replaced by combine barite powder and silica fume, that is Abstract - In the present world, concrete has become a
0%,5%,10%,15%,20% and 25% barite powder and silica fume added one by fourth percentage of barite powder.
vital part of our lives. Barite is a soft crystalline mineral form of barium sulphate. Barite powder mostly used in oil well drilling industry and paint industry Silica fume is a byproduct obtained from an electric arc furnace used in manufacture of silicon metal. Barite powder and silica fume can be used as a best supplementary cementitious material. Self compacting concrete invention makes a significant turning point in the history of construction sector. In this project experimental program carried out to explore mechanical properties of self compacting concrete as partial replacement of cement by barite powder and silica fume. Compare the compressive strength, split tensile strength of M30 grade self compacting concrete. Cement is partially replaced by 0%, 5%, 10%, 15%, 20% and 25% by barite powder and silica fume by one by fourth of barite powder.
2. MATERIALS USED 2.1 Barite Powder(BP) Barite is a soft crystalline mineral form of Barium sulphate Baso₄. Approximatly 80% of the barites produce worldwide is used for oil and gas drilling. Among the states in India, Andhra Pradesh alone accounts for 92% of country’s barites resourses. Barites is used as filler and extender in rubber products. It is added to rubber compounds to impart resilimey and durability and it is used as filler in paper industry. In order to enhance the value of barites there is a need to explore the possibilities of using barites in the production of valuable material concrete is universal material and barite powder can be use in cement concrete.
Key Words: Barite powder, Supplementary cementitious materialsilica fume, Self compacting concrete, Compressive strength, Tensile strength.
Barite (BaSO4) gets its name from its high density, in fact, barite comes from the Greek ‘‘barys’’ which means heavy. This is due to value of 4.48 at 26℃ this value is close to that of some iron or lead ores, such as hematite or galena. Global consumption is driven mainly by oil and gas industry, which is the main end use sector for barite; it accounts about 85% of global demand for the product which is used in powder form . The other applications concern chemical industry and radiological protection.
1.INTRODUCTION Construction industry is a fastly growing industry.Concrete is the main made material used for construction. Concrete is mainly composed of cement, aggregate and water. Cement manufacturing produce high amount of CO₂ emission.CO₂ emission will cause environmental problems. Researchers starts to find a good alternative to cement in concrete. The demand for cement is increase with global rise of urbanization and challenging the environment. The availability and quality of cement manufacturing are decreased by use of waste materials from different industries in concrete production and also reduce the environmental problems.
2.2 Silica Fume(SF) Silica fume is an amorphous poly-morph of silicon dioxide and silica. It is highly pozzolanic material and it is used to enhance the strength and durability properties of concrete. Silica fume also be added to the concrete as admixture. Silica fume increases compressive strength and abrasion resistance of concrete. It reduces bleeding because the free water is consumed wetting of large surface area of silica fume. Silica fume also blocks the pores in concrete and water holding capacity of concrete is increased.
Self compacting concrete that has an ability to fill the form work without any vibration. Self compacting concrete flow under flow under its own weight. The benefits of using self compacting concrete are reduce labour and machine equipment cost, easy and quick placement of concrete, enhance strength and durability. Barite is a soft crystalline mineral form of barium sulphate. Silica fume is a by-product obtained from electric arc furnace used in manufacture of silicon metal. Barite and silica fume can be used as a best supplementary cementitious material. In this study cement is partially
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Initially silica fume added to the concrete it remain inert. But water added to the cement the silica fume is reacted with water and forms calcium silicate hydrate and calcium hydroxide. Formation of these two by products are acts a
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