Slurry Wall Concrete Mix Design

Because of the relative simplicity.

Slurry wall concrete mix design.

Design guide slurry wall december 2008 page 1 of 43 i. Xs slurry makes for an elegantly simple solution to a very typical problem in precast. R an steven r. Introduction this guide was developed to assist designers in evaluating the suitability of concrete diaphragm walls slurry walls for earth support for project application to provide an understanding of common construction issues and provide guidance on construction inspection requirements.

This mixture is capable of filling all voids in irregular excavations and hard to reach places such as under undercuts of. When combined with surecrete s color packs it allows design elements to match complement or contrast with the concrete piece. This technique is typically used to build diaphragm water blocking walls surrounding tunnels and open cuts and to lay foundations. The first diaphragm walls were tested in 1948 and the first full scale slurry wall was built by icos in italy in 1950 puller 1996 with bentonite slurry support as a cut off wall.

Either value is achievable with the right mix of. Surecrete s xs casting concrete slurry mix was designed to quickly fill voids and pinholes in precast concrete pieces or any concrete where a smooth surface is desired. In particular the concrete slump should be 8 inches 1 inch for tremie or slurry construction and 7 inches 1 inch for all other conditions. Concrete consolidation during placement.

Concrete mix design and workability shall be consistent for tremie or pump placement. The ideal texture of concrete slurry is thick and pasty with a consistency similar to tempera paint. Environmental projects often require a permeability less than 1 x 10 7 cm sec but a levee or dewatering project may require a permeability less than 1 x 10 6 cm sec. The most important property of sb backfill is a low permeability.

Typically sb backfill has a permeability in the range of 10 6 to 10 8 cm sec. Day äbsträct ä cement bentonite cb slurry cut off wall is a variation of the slurry wall process that is used to create an underground barrier to stop the lateral flow of ground water and other fluids. If the slurry is too runny or too thick it will not adequately adhere to the concrete surface and will prevent bonding between the concrete layers. Icos constructed the first structural slurry wall in the late 1950s for the milan metro puller 1996.

A slurry wall is a civil engineering technique used to build reinforced concrete walls in areas of soft earth close to open water or with a high groundwater table. Department of the interior bureau of reclamation july 2014.