Tremie
Encyclopedia
In the Tremie Concrete method, concrete
is placed below water level through a pipe, the lower end of which is kept immersed in fresh concrete so that the rising concrete from the bottom displaces the water without washing out the cement content.
The tremie concrete method is often used in bridges that span bodies of water. In this case, the pier footing is supported by a tremie. Tremie pipes are also used to pour the concrete in slurry wall
s.
US Army Corps of Engineers recommends that mass tremie concrete placement be limited to a water velocity of 2 feet per second for standard tremie mixes and to 6 feet per second for high-performance tremie mixes containing anti-washout admixture.
Tremie methods are employed for materials other than concrete, and for industries other than construction. For example, bentonite slurries for monitoring wells are often emplaced via tremie pipe.
Concrete
Concrete is a composite construction material, composed of cement and other cementitious materials such as fly ash and slag cement, aggregate , water and chemical admixtures.The word concrete comes from the Latin word...
is placed below water level through a pipe, the lower end of which is kept immersed in fresh concrete so that the rising concrete from the bottom displaces the water without washing out the cement content.
The tremie concrete method is often used in bridges that span bodies of water. In this case, the pier footing is supported by a tremie. Tremie pipes are also used to pour the concrete in slurry wall
Slurry wall
A slurry wall is a technique used to build reinforced-concrete walls in areas of soft earth close to open water or with a high ground water table. This technique is typically used to build diaphragm walls surrounding tunnels and open cuts, and to lay foundations.A trench is excavated to create a...
s.
US Army Corps of Engineers recommends that mass tremie concrete placement be limited to a water velocity of 2 feet per second for standard tremie mixes and to 6 feet per second for high-performance tremie mixes containing anti-washout admixture.
Tremie methods are employed for materials other than concrete, and for industries other than construction. For example, bentonite slurries for monitoring wells are often emplaced via tremie pipe.