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  • Soil remediation, one discipline within the broader scope of environmental remediation, is the process of decontaminating soil. RECON is an industry leader in soil and sludge stabilization and solidification.
  • A secant wall is used in deep foundations in situations where the surface soil layers are unstable.
  • Among the processes used in soil remediation, excavation and dredging are among the most common. The process involves extracting unrecoverable contaminated soil.
  • Secant pile walls are one of the most economical methods of creating effective water control barriers for building structural walls, top-down tunnels and dams.
  • Deep Soil Mixing is a in-situ soil improvement technology used to construct cutoff or retaining walls and to treat contaminated soils.
  • This sludge pond is a good candidate for bio remediation or stabilization.
  • RECON's excavator is capable of digging a slurry wall up to 100 ft deep. Slurry walls have been used for decades to provide cost-effective, long-term solutions for many groundwater control problems.
  • Soil remediation project using remote placement conveyor.
  • Driving concrete pile to strengthen and support structural foundations.
  • Slurry wall construction is used to create non-structural barriers (Cutoff Walls, Slurry Trenches), which are constructed underground to impede groundwater flow.

Secant Piles

 

Secant pile walls are an innovative way to build subterranean structure walls and retaining walls. They are formed by a series of interlocking and contiguous drilled shafts, which are constructed using primary piles and secondary piles that are made of soft concrete and become interlocked when set. They are used primarily where there is a high water table or unsuitable ground conditions. Secant pile walls are attractive near buildings, roads, and other sensitive structures due to lack of noise and vibration during construction. Secant walls can be used to form a continuous water-resistant wall – an added benefit on environmental projects. The final product provides a fully concreted face and can be an effective alternative.

Secant Pile Wall

 

RECON used its state-of-the art Delmag RH 190 top head drive drilling rig to build a 140 by 240 by 25 feet deep, 6-million gallon stormwater run-off holding tank. To create this watertight structure, RECON installed 306 secant piles to a depth of 60 feet.

 

secant pile wall

 

Project Features

 

• Drilling secant pile shafts that interlock to form a continuous wall

 

• Installing the 3-foot diameter secant piles on typical 2-foot, 6-inch centers, which produced a 6-inch overlap to form a 30-inch wide pile for the structural exterior wall of the holding tank.