Umudike Journal of Engineering and Technology

Michael Okpara University of Agriculture, Umudike


EXAMINATION OF THE PHYSICAL PROPERTIES OF VARIOUS BRANDS OF CEMENT IN NIGERIAN MARKET VIS-À-VIS ESTABLISHED STANDARDS

Ubachukwu, O. A.
Department of Civil Engineering, Michael Okpara University of Agriculture, Umudike, Abia State, Nigeria



ABSTRACT

Cement is an integral part of concrete. Its properties affect the properties of concrete produced with it. Therefore, there is need to examine the properties of various brands of cement available in the Nigerian market with a view to ascertaining their compliance with the set standards. Five brands of cement: Unicem, Dangote, Ibeto, Elephant and Atlas were selected and tested for Fineness, Consistency, Setting Times (Initial and Final), Soundness and Compressive Strength. For the compressive strength, two concrete cubes were cast in a 150x150x150mm mould for each brand of cement and for each curing age of 3, 7, and 28 days. A total of 30 cubes were cast and cured. The results revealed that all the tested brands of cement in the Nigerian market met the requirements of various standards: Fineness (Maximum of 10%), Consistency (Plunger penetration distance of 5 to 7mm on paste made of 500g of cement mixed with 25 to 75% of water), Setting Times (45minutes minimum and 600 minutes maximum for initial and final setting times respectively), Soundness (10mm maximum expansion). The least compressive strength is more than 30N/mm2 target strength. Thus all the tested cement brands in the Nigerian market met the requirements of the relevant codes/standards.



Keywords: cement, brands, properties, market, setting time


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Published
Wednesday, December 28, 2016

Issue
Vol. 2 No. 2, DEC 2016

Article Section
GENERAL

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