Utilization of Coconut Shell as Coarse Aggregate in the Development of Lightweight Concrete;

by Gunasekaran.K

Institution: SRM University
Year: 2015
Record ID: 1189235
Full text PDF: http://shodhganga.inflibnet.ac.in/handle/10603/34574


newline In this study, coconut shell is used as lightweight aggregate in newlineconcrete. The properties of coconut shell and coconut shell aggregate concrete is newlineexamined and the use of coconut shell aggregate in construction is tested. newlineMoisture content and water absorption were 4.20% and 24% respectively and newlinethese values are more compared to conventional aggregate. Coconut shell newlineexhibits more resistance against crushing, impact and abrasion compared to newlineconventional aggregate. Density of coconut shell is in the range of 550 - 650 kg newline/m3 and these are within the specified limits for lightweight aggregate. There is newlineno need to treat the coconut shell before use as an aggregate except for water newlineabsorption. The presence of sugar content in the coconut shell, as long as it is not newlinein a free sugar form, does not affect the setting and strength of concrete. newlineHydration test on coconut shell fines with cement indicates that the newlineinhibitory index for coconut shell fines with cement can be classified as low and newlineno pre-treatment is required. Coconut shell-cement ratio has been optimized to newlinesatisfy the criteria of structural lightweight concrete.%%%