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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Characterization of cemented paste backfill pore structure using SEM and IA analysis
Bulletin of Engineering Geology and the Environment, Volume 67, No. 2, Year 2008
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Description
This paper presents a pore structure study conducted on different cemented paste backfill (CPB) samples using scanning electron microscopy and image analysis (SEM-IA). The SEM-IA approach was used to estimate three pore structure parameters: total porosity (n), pore size distribution (PSD), and pore space tortuosity (T). The influence of three binders and three types of water (one de-ionised and two sulphated) was also assessed after 14 and 92 days of curing. The evaluation of n by SEM-IA showed a decrease with curing time that was in accordance with the CPB strength increase. The PSD and the T were only slightly influenced by the water chemistry and the type of binder; the parameters evolved with curing time and were related to a decrease in pore size and an increase in tortuosity. Changes of the pore structure were more significant with sulphated mixing water and the OPC-slag binder. The methods and results presented here will be useful to predict some properties of CPB such as saturated hydraulic conductivity, water retention curve and effective diffusion coefficient. © Springer-Verlag 2008.
Authors & Co-Authors
Bussière, Bruno
Canada, Rouyn-noranda
Université du Québec en Abitibi-témiscamingue
Canada, Ottawa
Natural Sciences and Engineering Research Council of Canada
Aubertin, Michel
Canada, Montreal
Polytechnique Montréal
Canada, Ottawa
Natural Sciences and Engineering Research Council of Canada
Benzaazoua, Mostafa
Unknown Affiliation
Statistics
Citations: 44
Authors: 3
Affiliations: 4
Identifiers
Doi:
10.1007/s10064-007-0117-y
ISSN:
14359529
Research Areas
Environmental