期刊
CONSTRUCTION AND BUILDING MATERIALS
卷 65, 期 -, 页码 60-66出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2014.04.100
关键词
Lateritic soil; Alkali activation; Processing temperature; Compressive strength; Building applications
资金
- Department of Materials and Chemistry, Vrije Universiteit Brussel, Belgium
- Local Materials Promotion Authority (MIPROMALO), Cameroon
- The Academy of Sciences for the Developing World (TWAS) [11-024 RG/CHE/AF/AC-G]
- UNESCO FR [3240262695]
The present study investigates the suitability of alkali activation of a lateritic soil for building applications. Lateritic soil was found to contain kaolinite, associated with quartz and hematite minerals. Both the processing temperatures and the amount of NaOH used were found to influence the development of compressive strength which was in the range of 12-51 MPa and 2-23 MPa respectively for dry and wet specimens. The synthesized products were thermally more stable, containing crystalline and amorphous phases mainly resulting from the dissolution of kaolinite. The XRD, FTIR, SEM and TG/DTA analyses showed an incomplete dissolution of the starting minerals. (C) 2014 Elsevier Ltd. All rights reserved.
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