International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 03 | Mar -2017
p-ISSN: 2395-0072
www.irjet.net
Some studies on strength properties of tetra blended concrete with partial replacement of cement by various pozzolanic materials and micro Al2O3 S. Ramesh Reddy1, P.Srinath2, Dr V. Bhaskar Desai3 2M
1Professor,
Dept. of civil Engineering, Brindavan Institute of Technology & Science, AP, India. Tech Student, Dept.of civil Engineering, Brindavan Institute of Technology & Science, AP, India. 3Professor, Department of Civil Engineering, J.N.T.University, Anantapuramu, AP, india. ---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract - Sustainable development in construction field
wide variety of structural configurations, and requires minimal maintenance during service. However, environmental concerns, stemming from high-energy expense and CO2 emission associated with cement manufacture, have brought pressures to reduce consumption through the use of supplementary materials. Both natural and artificial (man-made) materials show pozzolanic activity and are used as supplementary cementitious materials. In this experimental work a comparative study is done to find the optimum replacement of cement by Pulverized quartz powder, slag and Silica fume at 4, 8, 12, 16 and 20% of weight of cement by Compressive strength of M20 Binary blended mix . An attempt is made to find the optimum replacement of the above three pozzolanic materials combinedly at 16% weight of cement in equal parts along with 0.5% to 2.5% micro Al2O3 on 84% weight of cement to find the strength properties of Tetra blended concrete mix like Cube and Cylinder compressive strength, Split tensile strength, flexural strength. The used W/B ratio for the current investigation was 0.4.
shall meet the needs of the present situation without compromising ability of future generation to meet their own needs. It also shows that development that going to be made to sustain the planetary resources by using them effectively without making unnecessary wastage. The usage Slag, Silica fume and Quartz powder to replace the cement is because the production of the cement emits carbon dioxide gas to atmosphere. The emission of carbon dioxide will increase the effect of global warming due to the emission greenhouse gases. Among the greenhouse gases, carbon dioxide contributes about 65% of global warming. Many researchers have studied the properties of ordinary Portland cement with different mineral admixture like silica fume, slag, fly ash, rice husk ash as cement replacement materials. The conventional mix has been designed for M20 grade concrete. In the present study, effect of pozzolanic materials with addition of micro Al2O3 is studied through compressive, split tensile and flexural strength in concrete. Slag, Pulverized Quartz powder and silica fume are used as cement replacement materials at 4%, 8%, 12%, 16% and 20% individually, finding the optimum replacement of cement based on cube compressive strength and an attempt is made for ternary blended concrete with16% of these three pozzolanic materials (slag + pulverized Quartz powder + silica fume) by three equal parts and tetra blended concrete with addition of 0.5-2.5% micro Al2O3 powder on 84% weight of cement. From the test results, it was found that tetra blended concrete mix with 16% pozzolanic materials and 1% of Al2O3 yielded higher compressive strength.
1.1 Literature Review Naresh Kumar (2014) Investigated on Compressive and Flexural strength of binary blended concrete. Metakaolin and silica fume area used as cement replacement materials at 5%, 10% and 15% by mass keeping water–cement ratio as 0.42. He concluded that Replacement of Metakaolin increase the Compressive Strength at all ages of curing. The optimal replacement of silica fume and metakaolin is achieved at 10%.
Key words - Pulverized Quartz Powder, Slag, Silica Fume, Micro Al2O3, Binary, ternary, and Tetra blended
Hariharan A R , Santhi A S , Mohan Ganesh G (2011) Investigated on the effect of ternary cementitious system on compressive strength of concrete. The concrete containing ternary blends of Portland cement, silica fume (SF) and fly ash (FA) Class C fly ash is used in this study in various proportions (i.e.) 30%, 40% and 50% and that of silica fume by 6% and 10% by weight of cement with constant o.4 w/c ratio. They reported that the addition of 6% SF to different FA replacements has a high
1.INTRODUCTION
Concrete is one of the most extensively using construction materials in the world, with about two billion tons of utilization worldwide each year. It is attractive in many applications because it offers considerable strength at a relatively low cost. Concrete can generally be produced of locally available constituents, can be cast in to
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