Laboratory Investigation of the Effect of Chikoko Mud on the Compressive Strength of Portland Cement Concrete

Captain G Ottos, Daniel Nyebuchi

In this paper, the compressive strength of chikoko blended cement concrete is investigated. The test results show that the replacement of cement with chikoko mud reduces the compressive strength at a uniform rate of 4%, 10%, 15%, 24% and 37% respectively for 7, 14, 21 and 28 days curing as the content of chikoko increases. The trends of the results are reflections of the predictable properties of concrete with supplements and as a result, it can serve as a useful tool for assessment of chikoko mud. Also at 10%, the minimum strength of 20.38N/mm² was observed at 7days curing while maximum strength was 26.49N/mm² at 12 days curing. The study therefore has revealed that chikoko mud can be used for mass concrete and non-load bearing structures at 10% replacement.