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Multi-linear drainage geocomposites for railways
June 1st, 2022
FIGURE 1 Multi-linear drainage geocomposite under railway embankment In civil engineering, drainage systems are traditionally made with granular material layers and perforated collector pipes. The use of drainage geocomposites became more common 30 years ago with the development of products that met the specific requirements of each application. Moreover, the geocomposite is cheaper than the […]
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 […]
Geosynthetics combine to create stiffened trackbed in Scotland
October 25th, 2021
Photograph courtesy of Greenfix UK and Presto GeoSystems The Borders Railway is the longest new domestic railway to be constructed in Britain in more than 100 years. Four new stations in Midlothian area and three in the Scottish Borders region have reduced journey times between Tweedbank and Edinburgh to less than one hour from nearly […]
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. […]