RESEARCH ARTICLE
The Use of Secondary Gypsum to Make a Controlled Low Strength Material
P. Claisse*, E. Ganjian, M. Tyrer
Article Information
Identifiers and Pagination:
Year: 2008Volume: 2
First Page: 294
Last Page: 305
Publisher ID: TOBCTJ-2-294
DOI: 10.2174/1874836800802010294
Article History:
Received Date: 31/03/2008Revision Received Date: 29/09/2008
Acceptance Date: 30/09/2008
Electronic publication date: 29/12/2008
Collection year: 2008
open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution-Non-Commercial 4.0 International Public License (CC BY-NC 4.0) (https://creativecommons.org/licenses/by-nc/4.0/legalcode), which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.
Abstract
This paper reports on the use of secondary minerals to make Controlled Low Strength Materials for trench or mine backfill. The mixes used red titanogypsum which is a by-product of titanium dioxide pigment production. A number of other secondary minerals were considered for mixing with the gypsum and steel slag from the basic oxygen process was found to be most successful. An optimised mix was developed and a site trial was carried out. The results showed a good performance but the failure of one test sample during curing showed that the material may not be suitable for other applications.