Shams Geotek in Nigeria was tasked with completing various geotechnical soil tests and develop a plan to execute the necessary soil improvements beneath a 4,500,000 gallon capacity petroleum product tank in Delta State, Nigeria.
Due to growth in the Twin Cities area, MCES determined they needed to construct a 50 foot deep sanitary sewer lift station, modify alignment of gravity sewers and add a 9000 foot long forcemain to handle increased volumes.
Chemical grouting has been successfully used for over 40 years to control the movement of groundwater in a wide variety of applications including tunnels, subway systems, sanitary sewers, mines and construction projects.
Tunnel contractors can choose whether to use cement or chemical grouts. To help them out, Britt Babcock discusses both types, which to use, when to use them and why...and an idea of how much it will all cost.
Groundwater infiltration can be due to either primary or secondary permeability. When both types of permeability are present, mitigation requires versatility and cooperation between multiple project participants.
Standard Cementitious Grouts have two main limitations: One, the inability to effectively penetrate rock microfractures or dense, silty soils, and two, poor performance due to deleterious curing problems inherent in standard concrete.