Continuous research on new grout formulations and injection techniques is at the forefront of Sovereign’s global leadership in the development of polymer emulsion grouts for mining, civil projects, nuclear containment and other environmental applications. Work on specialized grout products and applications begins in the laboratory and proceeds through field pilot testing. Our scientists and engineers present white papers highlighting case studies demonstrating our creative water-sealing solutions to challenging field conditions.

For mining applications, NOH2O has been formulated in such a way that set up times can be controlled and can be used effectively in all water types, including saline and hypersaline formation waters typically found in Australia and surrounding evaporite mines everywhere. Permeameter testing in the laboratory allows direct observation of grout migration through various geologic materials and columns of water of varying density.

For civil projects, there is commonly a challenging interplay between water sealing and geotechnical engineering/building foundation stability. Excavation and water-sealing of new underground infrastructure for subway and sewer systems must be completed in highly developed urban settings without ground subsidence that may damage nearby commercial buildings. In the laboratory, we can observe grout migration through various geologic materials to support permeation grouting programs, and our scientists work side-by- side with engineering consultants to conceptualize hydraulic containment systems around large excavations. Our researchers support the overall project team effort to maximize safety and to minimize potential for adverse geotechnical effects of ongoing subsurface construction and water-sealing. We also work cooperatively with system operators to work during scheduled shut downs in order to minimize disruption of public services.

In recent years, Sovereign has formulated grouts that are radiation tolerant.  The goal was to develop a formulation that can be used for construction of groundwater containment structures such as those that may be needed at nuclear disaster sites and long-term high-level waste storage sites.  Because of intensive research including laboratory experiments where we have subjected our grouts to protracted bombardment by radionuclides, our products are now radiation tolerant and are certified to have a useful life of at least 100 years. We are presently conducting laboratory sand model research and pilot-scale field trials that will lead to refining the injection methods to suit the variety of geological deposits that may be encountered in the subsurface at nuclear facilities.