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South Africa Class F Fly Ash for roads : physical and chemical analysis

Published Article / Fly Ash is a by-product at thermal power stations, also otherwise known as residues of fine particles that rise with flue gases. An industrial by-product may be inferior to the traditional materials used construction applications, but, the lower the cost of these inferior materials make it an attractive alternative if adequate performance can be achieved. The objective of this study is to evaluate the chemical and physical effectiveness of self-cementing fly ashes derived from thermal power stations for construction applications with combined standards. Using laboratory testing specimens, suitable types of Fly Ashes namely: Kendal Dump Ash, Durapozz and Pozzfill, were tested to the required standards to evaluate the potential properties. All three Fly Ashes have been classified as a Class F Fly Ash, which requires a cementing agent for reactions to take place and for early strength gains in the early stages of the reaction processes. The Fly Ashes conformed to the combination of standards and have shown that the proper reactions will take place and will continue over period of time. The use of fly ash is accepted worldwide due to saving in cement, consuming industrial waste and making durable materials, especially due to improvement in the quality fly ash products.

Identiferoai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:cut/oai:ir.cut.ac.za:11462/310
Date January 2013
CreatorsHeyns, M.W., Hassan, M. Mostafa
ContributorsCentral University of Technology Free State Bloemfontein
PublisherInterim : Interdisciplinary Journal, Vol 13, Issue 3: Central University of Technology Free State Bloemfontein
Source SetsSouth African National ETD Portal
Languageen_US
Detected LanguageEnglish
TypeArticle
Format257 180 bytes, 1 file, Application/PDF
RightsCentral University of Technology Free State Bloemfontein
RelationInterim : Interdisciplinary Journal;Vol 13, Issue 3

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