Simultaneous execution of multiple foundation techniques at three small sites with limited staging availability and laydown areas in a densely populated downtown setting required top-level planning, coordination, and performance.

Reinforced Diaphragm Slurry Walls provided initial support during shaft excavation and also formed part of the permanent structure.

In support of tunneling operations, Keller installed slurry wall access and exit shafts, and a comprehensive ground improvement program along the tunnel alignment.

Keller used two triple axis jet grouting machines that were able to do the entire contract 33% faster than the anticipated schedule, resulting in a project that was completed substantially ahead of the deadline.

Keller’s innovative solution to perform the jet grouting using several multi-axis (Bi-Jet) machines enabled the construction of the project to be completed in less time requiring fewer machines as well as being less costly than anticipated.

Keller installed jet grout columns to provide structural support to the failing Brooklyn Marine Terminal 8 bulkhead.

Keller used four of its state-of-the-art hydromills to install the Clearwater Dam cutoff wall.

A permanent earth retention system was installed for the schedule-intensive, state-of-the-art Dallas Cowboys Stadium in less than five-and-a-half months. To support the largest domed stadium arches in the world, Keller also installed Load Bearing Elements (LBEs).

To reduce the inflow of gas and artesian water into the proposed CSO shaft excavations, Keller conducted a comprehensive drilling and grouting program. It is one of the largest acrylamide grouting projects completed in North America.

Keller self-performed all of the drilling work, which required resonant sonic drilling through the overburden (to depths up to 240 feet through the core of the dam).

Jet grouted columns provide soil stabilization and support to piers piles, bearing 500-ton crane loads, during the construction of twin 48-inch diameter pipes.

The construction of a concrete cutoff wall reduced seepage and increased stability at this dike structure.

Keller completed the Mississinewa Lake Dam foundation remediation by constructing a cut-off wall for seepage control.

Keller developed a liquid nitrogen ground freezing solution that allowed for safe access to inspect and repair the tunnel boring machine (TBM) cutter head that experienced mechanical failure during mining operations.

Slurry walls addressed multiple design and dam safety aspects on this challenging project.

Slurry walls were utilized in the construction of a massive cut-and-cover TBM launch box for this challenging tunnel project.