Article Sidebar
Published:
Jan 29, 2012Keywords:
Article Details
Copyright belongs to the Faculty of Engineering, University of Nigeria, Nsukka, Nigeria
The contents of the articles are the sole opinion of the author(s) and not of NIJOTECH.
NIJOTECH allows open access for distribution of the published articles in any media so long as whole (not part) of articles are distributed.
A copyright and statement of originality documents will need to be filled out clearly and signed prior to publication of an accepted article. The Copyright form can be downloaded from https://www.nijotech.com/downloads/COPYRIGHT%20FORM.pdf while the Statement of Originality is in Statement of Originality.pdf (nijotech.com)
For articles that were developed from funded research, a clear acknowledgement of such support should be mentioned in the article with relevant references. Authors are expected to provide complete information on the sponsorship and intellectual property rights of the article together with all exceptions.
It is forbidden to publish the same research report in more than one journal.
Main Article Content
Effect of Salt Water in the Production of Concrete
Abstract
In this research work, the effect of salt water in the production of concrete was investigated. A total of ninety (90) concrete cubes were cast for compression strength test i.e. forty five cubes were cast using fresh water and the other forty five cubes were also cast using salt water. Similarly, a total of ninety (90) concrete beams were cast for flexural strength test i.e. forty five beams were cast using fresh water and the other forty five beams were also cast using salt water. The concrete cubes and the beams were cured at 7,21,28,60 and 90 days respectively. The result of the average compressive strength of concrete obtained using fresh water of mix ratio (1:1.51:4.01), water cement ratio (0.47) ranges from 27.35-42.34N/mm2 while that of salt water ranges from 25.24-38.81N/mm2 for the hydration period of 7,21,28,60 and 90 days. The flexural strength of concrete obtained using fresh water of the same mix ratio and water cement ratio ranges from 6.60 – 11.20N/mm2 for 7,21,28,60 and 90 days hydration period while that of salt water ranges from 5.98-11.04N/mm2 for the same hydration period. For the mix ratio (1:1.61:4.03) and water cement ratio (0.55), the average compressive strength of concrete obtained using fresh and salt water ranges from 27.26-40.80N/mm2 and 24.68 – 39.13N/mm2 respectively while the flexural strength ranges from 6.55-11.13N/mm2 and 6.26-10.76N/mm2 for fresh and salt water respectively. For the mix ratio (1:1.66:4.24) and water cement ratio (0.50), the average compressive strength of concrete obtained using fresh and salt water ranges from 25.05 -38.13N/mm2 and 23.58-36.03N/mm2 respectively while the flexural strength ranges from 6.18-9.88N/mm2 and 6.15 – 10.39N/mm2 for fresh and salt water respectively. The initial and final setting time of cement using fresh water is 50mins and 587mins while that of salt water is 55mins and 605mins respectively.
