Assessment of mechanical properties of cashew nut shell ash blended concrete

2021 ◽  
Vol 6 (4) ◽  
Author(s):  
Jugal Kishore Mendu ◽  
Rama Mohan Rao Pannem
2021 ◽  
Vol 18 (1) ◽  
pp. 1-8
Author(s):  
O.I. Sekunowo ◽  
J.O. Ugboaja ◽  
J.A. Tiamiyu

Production of ductile iron using ferrosilicon-magnesium master alloy in melt treatment is currently fraught with challenges bothering on cost and availability. In this study the suitability of cashew nut shells ash (CNSA) as a viable alternative to magnesium master alloys employed in the treatment of molten cast iron for enhanced mechanical properties was studied. The carbonized CNSA used varied from 2-10 wt. % to treat different heat batches; CA1-CA5 containing varied amount of CNSA, CaO and FeSi in the molten cast iron. The cast samples were subjected to both mechanical characterisation (tensile, hardness and impact) and microstructural analysis using Instron electromechanical machine, impact tester and scanning electron microscope (SEM) coupled with energy dispersive spectroscope (EDS). Results show that the 8 wt. % CNSA addition demonstrated the best mechanical properties comparable to ASTM A536 ferritic ductile cast iron. Specifically, the 8 wt. % CNSA cast samples exhibited 433 MPa tensile strength, 144HRC hardness and ductility of 14.7%. Contributions to improved mechanical properties may be attributed to the development of sufficient fractions of graphite nodules during melt treatment with CNSA. These outcomes are a boost both to the production of quality ductile irons and a cleaner environment. Keywords: Nodularisation, ductile-iron, cashew-nut, ferrosilicon-magnesium alloy, mechanical properties


2015 ◽  
Vol 766-767 ◽  
pp. 79-84 ◽  
Author(s):  
T.N. Valarmathi ◽  
M. Ganesan ◽  
S. Sekar

Nowadays the use of composites is increased in various fields because of the favourable properties such as light weight, high stiffness and strength when compared to other materials. In the past few years natural fibres are being used due to their eco-friendly nature and lower costs. In this work, natural fibre composite panels are prepared using Cashew nut shell liquid (CNSL) resin as matrix and Teak wood saw dust as reinforcing material. Three set of samples have been made by varying the amount of resin by keeping the quantity of Teak wood saw dust as constant, to investigate the mechanical properties of the new composite.


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