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Reinforcement over soft soils with high-strength geogrids
February 1st, 2022
FIGURE 1 Port of Guaymas, Mexico, high-strength geogrid jobsite view Construction over soft foundation soils is usually associated with poor bearing capacity, excessive differential settlements and lateral sliding instability. Furthermore, the presence of poor ground conditions at a construction site is the most frequent cause of long construction durations. There are several alternatives that can […]
Koerner Lecture: Geosynthetic-reinforced column-supported embankments: Improving practice with better theory
August 1st, 2021
FIGURE 1 Geosynthetic-reinforced column-supported (GRCS) embankment under construction (Photograph courtesy HUESKER Synthetic GmbH) Editor’s Note : Jie Han, Ph.D., P.E., F.ASCE, is the third recipient of the Dr. Robert M. Koerner Award and Lecture Series. The two past recipients are George R. Koerner, Ph.D., P.E. and CQA, in 2017, and Barry Christopher, Ph.D., P.E., in 2019. […]
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 […]
‘A database and analysis of 236 failed MSE walls using geosynthetic reinforcement’
September 6th, 2016
GSI’s September webinar Webinar overview Mechanically stabilized earth (MSE) walls, berms, and slopes with geosynthetic reinforcement have been developed since the 1970s, first with geotextiles and then geogrids. Our estimate is that approximately 50,000 exist and the technology is utilized worldwide. Unfortunately, there have been many failures, some with excessive distortion while others have actually […]