The method of vertical withdrawal tubeDraw vertical tubes also called Tremie pipeThis is the simplest method for underwater concrete construction for quality assurance, for high productivity and almost all mechanized workThe principle of the method the pipe vertical withdrawal as follows:Fresh concrete is poured into the mouth at the top of the tube and hopper are flowing in ducts continuously (no fault) the bottom of the nail hole in bottomHe was only moving vertically and bottom tube mouth always submerged in concrete blocks 0.8 m to 1.5 from medium m
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