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Effects of Large Retarder Overdose on Concrete Strength Development
2010
Engineer Journal of the Institution of Engineers Sri Lanka
Retarders are used to delay the setting time of concrete. Retarder overdosing is not an uncommon problem, but its effects are not well understood. In this study, laboratory tests were conducted to determine the effect of retarder overdosing on the setting time and strength of concrete, using both cubes, and cores from a large specimen. It was found that overdose levels of 3 times the normal dosage had little effect on setting and strength development. Also, concrete with even 6 times the normal
doi:10.4038/engineer.v43i3.6969
fatcat:rh6yjgj5hreuvm7zcet54fzqce