Project Overview

Terra Nova prepared the site for in-situ soil solidification by saw cutting and removing existing asphalt and concrete slabs. During this excavation we had to dismantle a razor-wire security fence which was replaced after the project was completed. Within the 33-ft target area of the excavation, the top 4 feet of overburden was removed and stockpiled. Due to the depth of the excavation, a 34’ x 25’ slide rail system was installed to excavate soils for ISS treatment to 33-ft below grade surface. Terra Nova used an excavator to lower Portland Cement and Blast Furnace Slag down to the mixing zone at a 2.5% and 4.5% ratio, respectively. Another excavator equipped with a mixing head was used to homogenize soils. After allowing the slurry to cure, the overburden was replaced and compacted, and the slide rail system was removed. The remaining target areas were completed between 12 and 25-ft below grade surface with a mixing head and bucket mixing approach. Then our team collected geotechnical samples for each mixing cell created at a designated target depth. This project was completed on schedule within budget and meeting all geotechnical specifications.