Assessment of some mechanical properties of concrete by partial replacement of cement with cow bone powder
A.I. Quadri*, A.T. Wasiu
The cow bone powder was pulverized with a ball milling machine.
Some percentage replacement of cement with cow bone powder was done.
Mineralogical compositions of cow bone and cement were determined.
Compressive test and other mechanical tests were conducted.
Viability of percentage replacement of cement was determined as 7.5%.
Cement is an integral material for making concrete which has gained some feet in the construction industry over the past decades. Acquiring cement can be expensive; moreover, cement releases so much energy and CO2 that causes depletion of the ozone layer. This research, therefore, presents the use of cow bone powder as viable waste and economically effective material for partial replacement of cement in concrete. Series of tests such as dry and wet density test, compressive strength test, slump test, XRF test on cow bone powder, and chemical composition of cement & bone powder were conducted to determine the applicability and influence of cow bone powder on concrete strength. Partial replacement of cement with cow bone powder from 0 to 20% with 2.5% step was performed. The result of the XRF test done on cow bone powder shows that virtually all constituents compound contained in cement are also present in bone powder but in varying proportions. On an average, the compressive strength was 12.33 N/mm2 for the controlled sample. The results obtained showed an increase in the strength of concrete when cement is partially replaced by cow bone powder with different curing ages. The highest average compressive strength recorded at 28 days when cement was partially replaced by cow bone powder was at 7.5% (15.42 N/mm2). This was adjudged the best fit for viable partial replacement of cement in concrete.
To cite this article: Quadri AI, Wasiu AT. Assessment of some mechanical properties of concrete by partial replacement of cement with cow bone powder. Journal of Advanced Civil Engineering Practice and Research 2020;10:10-18.