concrete in saltwater
Posted by dan from new york, NY, US on April 9, 2007
are there any admixes you would recommend for a concrete pillar(roughly 3ft x 3ft by 2 ft) that will be underwater twice a day –it will be used to support a boat davit. also if salt water was used in the mixing of the concrete aggregate would it be any stronger—thank you
You can use a high range water reducing admixture, to reduce the water content of the concrete mix; this will make the concrete more impermeable. You can also add a acrylic or latex polymer to improve the water proofing property of the concrete.
I would recommend you to use regular tap water instead of sea water.
