Slurry wall grab is a construction technique that involves the use of a specialized machine called a grab to excavate a trench in the ground. The grab is equipped with a series of buckets or teeth that can dig through soil and rock, and it is operated by a skilled operator who can control the depth and width of the trench. As the grab excavates the trench, a thick, viscous mixture of soil, cement, and water is pumped into the trench to create a slurry. The slurry helps to stabilize the sides of the trench and prevent it from collapsing. Once the trench has been excavated to the desired depth, reinforcing steel bars are placed inside the trench, and the slurry is allowed to harden around the bars. This creates a solid wall that can be used to support the weight of a building or other structure. Slurry wall grab is often used in civil engineering projects that require the construction of retaining walls, foundations, and underground structures. One of the key advantages of slurry wall grab is that it allows for the construction of walls that are both strong and watertight. The slurry mixture used in the construction process is designed to prevent the seepage of water or other liquids into the ground, which can be particularly important in projects involving underground structures or structures located near bodies of water. In addition to its use in civil engineering projects, slurry wall grab is also used in the construction of tunnels and other underground infrastructure. The technique has been used in a number of high-profile projects around the world, including the construction of the World Trade Center in New York City and the Channel Tunnel between England and France.
construction, technique, trench, slurry, excavation
CITATION : "Michael Baker. 'Slurry Wall Grab.' Design+Encyclopedia. https://design-encyclopedia.com/?E=381668 (Accessed on July 18, 2025)"
Slurry wall grab is a form of construction technique used in civil engineering projects, most notably when building retaining walls and sheet piling. The technique involves excavating a trench in the ground, and then filling it with a thick, viscous suspension of soil, cement and water. This slurry mixture is then allowed to harden, forming a solid wall that can be used to support the wall or sheet piles. It is also often used to prevent seepage of water or other liquids into the ground. The use of slurry wall grab can be seen in projects such as the construction of bridges, dams and buildings.
Excavation, soil, cement, water, retaining, sheet piling.
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