Effect of Curing and Mixing Methods on the Compressive Strength of Mortar Containing Oil

Publisher:
UNIMAS
Publication Type:
Journal Article
Citation:
UNIMAS e-Journal of Civil Engineering, 2015, 6 (1), pp. 6 - 11 (6)
Issue Date:
2015-04-30
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Oil contaminated fine aggregate is a major environmental concern and can arise as a by product of industrial activities (e.g. oil well drilling and land contamination). Cement–based stabilisation/solidification of oil contaminated materials is an emerging technology however there are some issues that have not been fully addressed. This paper reports the results of a study conducted to investigate the effect of different curing and mixing methods on cement solidification and its consequent effect on the compressive strength of the resultant cementitious product. This work has been done to address leaching concerns during the curing period. The normal curing method for samples to be tested for compressive strength is lime saturated water. However, this method invalidates any subsequent leaching tests. Accordingly, bag curing (BC) and lime saturated water curing (LSW) have been applied using mortar mixed with mineral oil up to 10% by sand mass under water wet (WW) or oil wet (OW) mixing methods. The results indicate that development in 28 day compressive strength can be achieved without applying water by external means if the moisture movement from the mortar samples is prohibited, irrespective of the mixing methods used.
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