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Springtime failure of a cold-climate geotextile riprap slope
June 1st, 2018
Geotextiles play an essential role in geotechnical projects. A significant use for geotextiles is as a separator and filter in drainage and erosion control applications (Holtz 2002). A temporary erosion control application geotextile, such as silt fencing, is used to prevent soil erosion by containing the soil and turbid water in a onetime operation. For […]
Highway deep-patch geogrid applications
June 1st, 2018
Deep patch is a repair technique that has been widely used on low-volume roads in the Pacific Northwest as a cost-effective mitigation technique to address settlement and shallow landsliding of side-cast embankment fill slopes and natural slopes consisting of weak soils overlying stronger soils (Cuelho et al. 2012). A deep patch consists of a subexcavation […]
WisDOT publishes study on geotextile puncture test methods
June 1st, 2018
The Wisconsin Department of Transportation (WisDOT) and the Federal Highway Administration (FHWA) funded research into puncture test methods for geotextiles, and the report from this study is now available online. Various tests are conducted to assess and classify a geotextile’s suitability for different applications. One of these tests is the puncture strength test. This test […]
Final inspection: GRS–IBS bridge in place in 80 hours
June 1st, 2018
The Rhode Island Department of Transportation (RIDOT) began work on the McCormick Quarry Bridge over Warren Avenue in East Providence on Sept. 23, 2016, using a geosynthetic reinforced soil–integrated bridge system (GRS–IBS). According to the Federal Highway Administration and RIDOT, the technique allowed crews to cut the closure time for the bridge from one year […]
Geosynthetics need to be part of the infrastructure package
June 1st, 2018
In its 2017 Infrastructure Report Card, the American Society of Civil Engineers (ASCE) gave U.S. infrastructure a grade of D+. Not good. The sector report card on American roads faired even worse, earning a D, while TRIP, a national transportation research group based in Washington, D.C., says 32% of major urban American roads had pavement […]
The TRB Standing Committee on Geosynthetics
June 1st, 2018
The Transportation Research Board (TRB), a program of the nonprofit National Academy of Sciences, Engineering and Medicine, has more than 200 standing committees within their Technical Activities Division; one of those is the Standing Committee on Geosynthetics (AFS70), which focuses on issues related to analysis, design, installation and performance of geosynthetics used in transportation. The […]