Utilisation of fly ash to improve the engineering properties of lateritic soil Online publication date: Sat, 23-Aug-2014
by Agapitus Ahamefule Amadi
International Journal of Materials Engineering Innovation (IJMATEI), Vol. 3, No. 1, 2012
Abstract: This study examined the potential utilisation of fly ash obtained from a coal fired thermal power station to improve the engineering properties of a residually derived lateritic soil. The evaluation involved the determination of a number of geotechnical parameters used to assess performance of stabilised earthen materials such as index properties, compaction characteristics, hydraulic conductivity, compressive strength and desiccation induced shrinkage. Soil mixtures with varying proportions of fly ash (0%-20%) were compacted at predetermined optimum moisture contents with three compactive efforts namely British Standard Light (BSL), West African Standard (WAS) and British Standard Heavy (BSH) that represent the minimum, medium and maximum efforts expected in the field. Results showed that the plasticity index (PI), dry unit weight, hydraulic conductivity and desiccation induced shrinkage were lowered on addition of fly ash. Conversely, optimum moisture content (OMC) as well as unconfined compressive strength increased. Overall, the engineering properties of the soil were enhanced thereby producing an improved construction material whose parameters are compatible with the desired values for engineering performance.
Online publication date: Sat, 23-Aug-2014
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Materials Engineering Innovation (IJMATEI):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email email@example.com