Article Sidebar
Published:
Apr 14, 2014DOI:
10.4314/njt.v33i2.4Keywords:
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 Neem Seed Husk Ash on Concrete Strength Properties
Abstract
Neem Seed Husk is a by-product obtained during industrial processing of Neem Seed to extract oil and produce fertilizer. Laboratory tests on Neem seed husk ash (NSHA) mixed with cement were conducted to find its effect on concrete strength and workability. Tests including slump test, compressive strength test, concrete density test and scanning electron microscope (SEM) were carried out on concrete partially replaced with 0%, 5%, 10%, 15%, 20% and 25%NSHA and presented. The test results indicate that concrete workability is affected by NSHA partial replacement by increase in the slump at 5% and 10% replacements. But it decreases the slump at 15%, 20% and 25% replacements. At 28 days curing, only the control (0% replacement) and 5% replacement satisfied the target compressive strength and therefore can be used for non-structural and mass concrete applications. Densities of most of the cubes partially replaced with NSHA are generally higher than that of the control concrete; this is further supported by the SEM. which indicates that NSHA act as filler and occupy the voids between the aggregates, thereby making the concrete more compact and having higher densities. All the samples have satisfied the density requirement of British standard for normal- weight concrete
