Tremie

2019-10-19a tremie is a watertight pipe, usually of about 250mm inside diameter 150 to 300 mm, with a conical hopper at its upper end above the water levelt may have a loose plug or a valve at the bottom end tremie is used to pour concrete underwater in a way that avoids washout of cement from the mix due to turbulent water contact with the concrete while it is flowing.

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