STRUCTURAL BEHAVIOR OF REINFORCED CONCRETE BEAM WITH NANO MATERIAL

1Hayder Raad Hasan, 2Faris Jasim Altalqany, 3Sabah. M. Thahab

Abstract

Man throughout the ages has worked hard to improve the composition of the material during its formation, adding a matter that will enhance performance with less weight and also contribute to reducing pollution. The adoption of nanomaterials in construction fields, especially in concrete, as a partial substitute for some cement, would enhance performance. Experimental work investigates the structural behavior of reinforced concrete beams with nanotechnology material. Adopting nano and micro silica by replacing a partial of cement in reinforced concrete. the laboratory work incorporates with tests (compressive, slump, rapture tensile, flexural and 2P-load) Outcomes illustrate with the flexural failure mode addition of nano up to 3% increase ultimate load by (15%), as for shear failure mode addition of nano up to 5% increase ultimate load by (25%). The rise in compressive strength, split tensile and flexural strength, respectively, dosage of 3% led to peak of (25.82%, 20.86% and 60%), while the (5%) dosage led to peak of (33.23%, 25.79% and 48%). Exceeding the replacement ratio of 5% leads to a reverse action by reducing the performance of the concrete, reduce workability in concrete slump decreases by 50% when using 7% replacement ratio.

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