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International Conference on Instrumentation, Measurement, Circuits and Systems (ICIMCS 2011)

Chen Ming
Chen Ming
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Iron ore tailing (IOT) is a waste material from the iron ore mining processes and constitutes a nuisance both to human health and the environment. A study on its use as a cement replacement material was initiated in Civil Engineering Programmed, Abubakar Tafawa Balewa University, Bauchi, Nigeria. The preliminary tests carried out on the material showed that it has potentials for improving cement mortar and concrete properties. Setting times of cement is delayed and heat of hydration reduced by about 29 percent when cement was replaced with 40 percent IOT by mass. The workability of the concrete was also improved and compressive strength at 10 percent and beyond 28 days of curing compared favourably with the reference mix. The ratio of the flexural strength to splitting tensile strength was about 1.7.

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