Rehabilitation of the 80-year old North Outfall Sewer (NOS) Tunnel
In 1990, a residential area above the North Outfall Sewer (NOS) tunnel constructed in 1924, experienced subsidence.
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Publications
Multiple Pass Permeation Grouting to Encapsulate and Contain Radioactive Waste in a Predictable Fashion
During the 1960s, trenches and wells were constructed for the disposal of liquid low-level radioactive waste (LLLW) in Melton Valley at Oak Ridge National Laboratory (ORNL) in Oak Ridge…
Irreversible Changes in the Grouting Industry Caused by Polyurethane Grouting: An overview of 30 years of polyurethane grouting
Water reactive polyurethane grouts were introduced into the grouting industry during the late sixties by the Takenaka Company in Japan…
Pre-Excavation Grouting of Contact Zone and Rock Formation
The Environmental Protection Agency has cited combined sewer overflow (CSO) discharges as a significant source of pollution to the nation’s surface waters and…
Pre-conditioning/Pre-excavation Grouting of Soils Prior to Tunneling Below Highways & Railways
Pre-excavation grouting is a predictable and reliable technique performed to prevent or minimize settlement in advance of…
Pre-Excavation Grouting through water bearing zone under high pressure under extreme flow conditions
The Yung-Chung-Tunnel in Taiwan, constructed for the Taiwan-East Railway Bureau, collapsed during construction when a water bearing…