Effect of Water Source on Some Engineering Properties of Concrete (Case Study of Lagos Metropolis)
Journal Title: Invention Journal of Research Technology in Engineering & Management - Year 2018, Vol 2, Issue 10
Abstract
Lagos city being one of the most populous city in Africa is being faced with scarcity of portable water to meet domestic demand. At the same time there is also an increase in the construction industry with the use of concrete. This has left contractors with the option of seeking different sources of water for concrete production without knowing the effects such water will have on the properties of concrete. Therefore, this investigation critically appraises sources of water use in concrete production as one of the likely causes of building collapse in Lagos city. The performance of six sources of water obtained from Lagos municipality on some engineering properties i.e., setting times of cement paste, compressive strength and split tensile strength of concrete were checked in the laboratory and compared same with controlled specimens that is made with tap water as mixing water and curing water. C25 grade of concrete was adopted with a mix proportion of 1:2:4 at w/c ratio of 0.55. For each mix of water, compressive strength tests were conducted using 150x150x150 mm cube specimens, while tensile strength was investigated using 150x300 mm cylinder specimens. The study revealed that physiochemical properties of water varies depending upon place, time, environment, exposure and storage duration. These physical and chemical composition of water react differently with different constituent of concrete. These reactions mostly affect the setting time of cement paste, compressive strength and split tensile strength of concrete, some favourably while others unfavourably.
Authors and Affiliations
E. E. Ikponmwosa
Keywords
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