Diaphragm Walling
Carillion Piling constructs diaphragm walls by excavating the ground with crane-suspended grabs or a crane-suspended milling cutter. Trench excavation takes place under a support fluid, which is normally bentonite slurry; this provides support and stability to the trench sides. The diaphragm wall is constructed by filling the excavated trench with concrete, which can be reinforced as required.
These following factors can often lead to a diaphragm wall being selected:
- Deep excavations where other forms of side support are not possible or economic
- Restricted working space
- Stiffness and resistance to deflection are important
- Props or anchors can be minimised
- Water exclusion is required
- Speed of construction
- Predictable, reliable performance
- Safe system of work
- Underground cut-offs to control ground water
- Good surface finish required
Case Studies
