Comparative flexural behaviour of cement composites reinforced with Carbon black and Carbon fibres
Keywords:Cementitious composites, Composite Materials, Engineered Cementitious Composite, Carbon fiber, Carbon black, Activated carbon, Nanocomposite, Flexural strength, Construction material, Ductility, Stiffness, Toughness Index, Structural failure
The flexural performance of cement composites reinforced with Carbon black (CB) and Carbon fibers (CF) was investigated according to ASTM D790-2003 and IS 516-1999. The variation in flexural behavior like flexural strength, flexural modulus, toughness index, ductility index, and displacement at failure was different according to the proportion of CB used. Though the use of CB only, did not show promising results mainly owing to the stiffening of the composite, the trends observed when CB was hybridized with CF were encouraging, primarily leading to a 32 % increase in toughness and ductility index over the plain cement sample for an optimum loading of 5% CB and 0.25% CF by wt of cement. Although the mechanical strength of pure CB composites is reduced, they satisfy the basic requirements of lightweight construction materials
Copyright (c) 2023 Nishanth Patil, Dr Anand M. Hunashyal, Dr Sayed S Quadri
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