Toronto's Tunnel Solution (Available in the Geoenvironmental Special Section only)
The Toronto Transit Commission (TTC), one of the largest public transportation systems in North America, carries more than 1,000,000 commuters a day. The TTC's tunnels had...
The Penstock Puzzle
After 40 years of chronic slope movements and several engineering studies, the Sacramento Municipal Utility District in California signed a design-build contract to stabilize the 1,500...
For the Duration
The U.S. Army Corps of Engineers developed a new grouting method called duration grouting when constructing the foundations for the Portugues Dam in Ponce, Puerto Rico. The site is marked...
Sinkhole Solution (Available in Geo-Environmental Special Issue only)
In the summer of 1998, a large sinkhole developed overnight in the center of the two-year-old Eagle Ridge Mall in Haines City, FL. The surface depression measured approximately 4.3 m deep...
Behavioral Characteristics of Residual Soils
This proceedings,
Jet Grouting: New Directions
This article looks at jet grouting in soft soils, especially applications involving pre-installed structural supports for cut and cover excavations. The author offers a question and answer...
Grouts and Grouting
A Potpourri of Projects
This proceedings,
Cure for Thinning Concrete
After placing 75% of the concrete liner for twin 4.6 km transit tunnels in Portland, Ore., engineers discovered areas of concrete that were thinner than the prescribed 305 mm thickness....
Compensation Grouting
To minimize ground movement while tunneling a sewer 5 m below Toronto's Spadina subway line, engineers used special instrumentation, tunneling control and grouting to limit...
Great Grouts (Available only in Geoenvironmental Special Issue)
Particulate grouting has long posed challenges to those in the geotechnical field. But significant developments in the understanding of hydration and rheology control look promising. Modern...
Preparing for Repair (Available only in Geoenvironmental Special Issue)
The Sacramento River Water Treatment Plant, Sacramento, Calif., was built in 1924 and hadn't been upgraded since 1958. In 1996, the city of Sacramento, the owner of the plant,...
Grouting
Compaction, Remediation and Testing
This proceedings,
Los Angeles Metro-TBM Starter Tunnels-Mixed Face Conditions
Twin TBM starter tunnerls with mixed face conditions were successfully mined by roadheader with steel rib and shotcrete initial support beneath the Hollywood Freeway. Tunneling and total...
Grouting Pains (Available in Geoenvironmental Engineering Special Issue)
The article focuses on a new grouting technique for filling holes drilled during site investigation. The holes are grouted as the drill is withdrawn from the hole, instead of filled later....
Grouting to Great Depths
Logan Martin dam on the Coosa River in Alabama has been plagued by underseepage since its construction in 1964. The karst forming the dam's foundation allows water to flow...
Chemical Grouting
Technical Engineering and Design Guide, as adapted from U.S. Army Corps of Engineers, No. 24. This manual provides information and guidance for the...
Successful Implementation of Grouted Boulder Grade Control Structures on Drainageways in the Denver Metropolitan Area
This paper describes the development of design guidelines for the Grouted Sloping Boulder drop structure as an alternative for the sloping riprap drop structure. A number of partial failures...
Defect Detection (Available only in Geo/Environmental Special Issue)
Sonic integrity logging technology can detect flaws in deep foundations more reliably and at less cost than conventional boring techniques. These non-destructive test tools are being used...
Pile Wall Cuts Off Seepage (Available only in Geo/Environmental Special Issue)
An unusual cutoff wall constructed by the secant pile method succeeded in drying up seepage through the permeable strata below a saddle dam at Beaver Dam in Arkansas, owned by the U.S....
Practical Guide to Grouting of Underground Structures
This book presents a hands-on discussion of grouting fundamentals and provides a foundation for the development of practical specifications and field procedures. The author takes a practical...
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