Experimental Investigation on Multi Walled Carbon Nanotube Admixed Concrete

Abstract

Development of novel admixtures like Multiwalled Carbon Nanotubes (MWCN) newlinehas been the recently focused research area in the technological aspect of creating high performance concrete. The MWCN possesses high mechanical properties, making them newlinemore preferable to use as an ideal admixture for High-Performance Concrete. newlineThe main objective of this experimental work is to examine the effect due to the newlinedosage of MWCN on various mechanical properties of concrete, viz; Compressive newlinestrength, Split tensile strength and Flexural strength as well as Durability performance newlineof concrete, viz; Ultrasonic pulse velocity, Water absorption test, Water permeability, newlineRapid chloride permeability, Sorptivity, Sulphate resistance test, Chloride resistance newlinetest and Acid resistance test. newlineIn the present work, the cement mortar and concrete specimens used for the exper imental tests were prepared by varying MWCN viz; 0.05, 0.10, 0.15, 0.2, 0.25, 0.3, newline0.35, 0.4, 0.45, and 0.5% by weight of cement. For each of these concrete specimens, newlinethe Mechanical properties were determined for 7, 14, 28, 56, 90, 180, 270, and 360 newlinedays, and the Durability performance were determined for 28, 56, 90, 180, 270, and newline360 days of water curing. The Scanning Electron Microscopy and X-ray diffraction newlineanalysis were used to observe the strength response on various dosages of MWCN viz; newline0.05, 0.10, 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45 and 0.5% by weight of cement for 28 newlinedays. The experimental examination noticed that 0.25% of MWCN was the preferred newlinedosage for achieving concrete with high strength and durability. newline