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Study on Mechanical Properties of Concrete with Manufactured Sand and Bagasse Ash
Background/Objectives: In the construction of structures river sand used as fine aggregate in concrete for centuries. River sand is not a renewable natural resource. In most of the area, river sand has been excessively exploited, which has endangered the stability of river banks and the safety of bridges, and creates an environmental problem. Hence, minimization of the use of river sand inevitable. Methods: In this study, the Manufactured sand (M-sand), produced by crushing rock depositions as a fine aggregate used in concrete. The M-sand is more angular and has rougher surface texture than river sand. In the M60 grade concrete, M-sand is used as fine aggregate and Bagasse Ash (BA) used as a pozzolanic material for the partial replacement of cement. Bagasse ash has partially replaced by the ratio of 0%, 10%, 20%, 30% and 40% by volume of cementation material in concrete. M-sand has been replaced by fully by volume of fine aggregate. In this investigation, to study the properties of concrete test likes Compressive Strength, Tensile Strength, Flexural Strength, Young’s modulus and Workability of concrete were carried out. The effects of M-sand on mechanical properties, studies with and without partial replacement of Bagasse ash were studies at the age of 7, 28 days. Findings: The test results show that the incorporation of Bagasse Ash up to 20% replacement level increases the mechanical properties of concrete. The variation in use of M-sand in concrete as compared to the river sand with the Bagasse Ash shows the minimum variation in the strength properties. Applications/Improvement: From this study, it is observed that the use of M-sand in high strength concrete can be use for the replacement of fine aggregate in M60 concrete. Use of Bagasse ash up to 20-30 % can be effectively used in concrete with or without the addition of M-sand, where the Bagasse ash available in plenty.
Bagasse Ash, Compressive strength, Manufactured Sand.
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