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Encyclopedia > Slurry wall
Slurrywall excavator
Slurrywall excavator

A slurry wall is a type of wall used to build tunnels, open cuts and foundations in areas of soft earth close to open water or with a high ground water table. Image File history File links Size of this preview: 345 × 600 pixel Image in higher resolution (589 × 1024 pixel, file size: 418 KB, MIME type: image/jpeg) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Slurry wall ... Image File history File links Size of this preview: 345 × 600 pixel Image in higher resolution (589 × 1024 pixel, file size: 418 KB, MIME type: image/jpeg) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Slurry wall ... A disused railway tunnel now converted to pedestrian and bicycle use, near Houyet, Belgium A tunnel is an underground passage. ... Fill may refer to: In civil engineering, a fill is an artificial ridge or dam of earth or gravel (fill dirt) constructed to support a prepared right-of-way such as a railroad or highway across a valley or depression. ... A foundation is a structure that transmits loads from a building or road to the underlying ground. ... Groundwater is any water found below the land surface. ...

A set of guide walls, typically 1m (3 feet) deep and 0.5m (1.5 feet) thick, is first constructed on the surface. A special clamshell-shaped digger is used to excavate the slurry trench guided by the guide wall. The trench is kept filled with slurry (a mixture of bentonite and water) at all times to prevent collapse. Once the first trench is completed to design depth, or bedrock, an adjacent trench is dug in the same manner. Eventually, once a particular length is reached, a reinforcing cage is lowered into the slurry-filled pit and the pit is filled with concrete from the bottom up using tremie pipes. The concrete displaces the bentonite slurry which is pumped out and recycled. A tracked excavator by Daewoo. ... A slurry is in general a thick suspension of solids in a liquid and may be: Look up slurry in Wiktionary, the free dictionary. ... Bentonite - USGS Bentonite is an absorbent aluminium phyllosilicate generally impure clay consisting mostly of montmorillonite, (Na,Ca)0. ... Rebar is common steel reinforcing bar, an important component of reinforced concrete and reinforced masonry structures. ... Concrete being poured, raked and vibrated into place in residential construction in Toronto, Ontario, Canada. ...

On completion of concreting, digging within the now concrete wall-enclosed area can proceed. To prevent the concrete wall from collapsing into the newly open area, temporary supports such as tiebacks (anchors) are installed. Tiebacks are steel rods drilled through the concrete wall out into the soil or bedrock on the other side. Grout is pumped under pressure into the anchor holes so that the rods become attached to bedrock or soil. Once excavation is complete, construction of the structure inside the wall can begin. When completed, the structure itself prevents the wall from collapsing, so the tiebacks may be removed. Grout is a construction material used to embed rebars in masonry walls, connect sections of pre-cast concrete, fill voids, and seal joints (like those between tiles). ...

Slurry wall construction was used to construct the "bathtub" that surrounded most of the World Trade Center site. Slurry walls were also used heavily in Boston's Big Dig tunnel project. The Bathtub refers to the underground foundation area at the site of the World Trade Center and accompanying buildings in New York City in the United States of America. ... The World Trade Center site destruction, 2001 in 2006 The World Trade Center site is the 16-acre (6. ... Metropolitan Highway System Big Dig is the unofficial name of the Central Artery/Tunnel Project (CA/T), a megaproject which rerouted the Central Artery (Interstate 93), the chief controlled-access highway through the heart of Boston, Massachusetts, into a 3. ...

See also

Structure in the foreground is called a mud box, a type of retaining wall built to hold flood waters in check. ... Construction of the World Trade Center The building of the World Trade Center started as a post-World War II urban renewal project, spearheaded by David Rockefeller, to help revitalize Lower Manhattan. ...

External links

  • Video of slurry wall construction
  • A technical resource for slurry wall construction, slurry trenches and cut-off walls
  • Natural shale appears to be ideal material for landfill liners
  • Barrier technologies for environmental management
  • Pictures of slurry mixers and equipment

  Results from FactBites:
Slurry & Reactive Wall Systems (812 words)
Wall A and Wall B were backfilled with different percentages of granular iron and sand, per specifications.
Slurry wall excavation commenced in bedrock on the backside of the dam and was completed in the newly constructed dam.
The slurry wall had a maximum depth of 50 feet and was designed to keep site contaminants from entering Elliot Bay, located within 100 feet of the wall.
  More results at FactBites »



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