Article Sidebar
Published:
Dec 10, 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 Fines Content on the Engineering Properties of Reconstituted Lateritic Soils in Waste Containment Application
Abstract
A lateritic soil reddish brown in colour was reconstituted with inclusion of nes content in 0, 20, 40, 60, 80 and 90% to form six (6) dierent soil mixes (S1, S2, S3, S4, S5 and S6, respectively). These soils were analysed to determine the eect of nes content on their engineering properties. Tests were carried out to determine index properties, compaction characteristics, strength properties (unconned compressive strength (UCS) and undrained shear strength parameters) and hydraulic properties of the reconstituted soils. Specimens used for the determination of UCS, undrained shear strength parameters and hydraulic properties were prepared at the optimum moisture content (OMC) and compacted using the British Standard light, BSL (standard Proctor) energy. Reconstitution of the natural soil (0% nes content) yielded soil samples having fines content between 61 and 93%, and grading modulus that decreased with higher nes content. The specic gravity of the reconstituted soils decreased, while the Atterberg limits as well as derived plasticity parameters increased with higher nes content. The maximum dry density (MDD) and OMC decreased and increased, respectively, with higher nes content. The UCS and angle of shearing resistance generally decreased while cohesion increased with increase in nes content. The hydraulic properties improved with higher nes content. Test results indicate that the reconstituted lateritic soil samples meet the relevant requirements for materials to be used as hydraulic barrier in waste containment structures.
Keywords: compaction, derived plasticity parameters, hydraulic barrier, hydraulic conductivity, reconstituted lateritic soil
