GeoAmericas-2008 and GRI-21 proceedings now available

April 1st, 2008

All of the educational tracks from GeoAmericas- 2008 in Cancún are now available on CD: 238 papers from 44 technical sessions, more than 2,100 pages! The CD also contains the papers from all the sessions at GeoAmericas, including the Robert D. Holtz Symposium and all of the “Best Papers” presentations. There are more than 2 […]

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Geomembrane sealing systems for dams

April 1st, 2008

By Robert Koerner and John Wilkes Abstract The 2006 ICOLD Bulletin on Geomembrane Sealing System for Dams supersedes and greatly expands upon two earlier versions, published in 1981 and 1991. The 250 dams incorporating geomembranes cited in this new Bulletin include: 174 fill, 43 concrete, 32 roller compacted concrete, and 1 hybrid. Of the total, […]

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Three challenges in using SRWs and other reinforced-soil structures: Part 2B

April 1st, 2008

By Michael R. Simac, P. E., and Blaise J. Fitzpatrick, P. E. Introduction While segmental retaining walls (SRWs) have been routinely used for more than 15 years now, there are still three challenging issues facing owners considering their use. What is the best way to procure, design, and then build these structures to minimize short-term […]

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The GRS bridges of Defiance County

April 1st, 2008

By Michael Adams Introduction Three years ago, the Federal Highway Administration (FHWA) teamed up with local officials in Defiance County, Ohio, to test a new prototype geosynthetic-reinforced soil (GRS) integrated bridge system. Built in 2005, the prototype GRS bridge on Bowman Road in Defiance County is a success story for the county as well as […]

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Repairing Yi-Lan-I Road in Taiwan

April 1st, 2008

By Vincent Ho and Steven Chang Introduction Stretches of the Yi-Lan-I Road in Taiwan are located more than 3,200ft (1,000m) above sea level. It’s an important road that provides the primary access to the National Taipingshan Forest Recreation Area. But during a particularly rainy 75-day period (mid-July through September 2005), the region experienced abundant rainfall […]

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