Geotube dewatering containers help in cleanup of the Fox River

August 1, 2006

Cleansing the Fox: Decades of PCB contamination in Wisconsin’s lower Fox River will take decades to clean up. Today, geotextile dewatering containers are helping with that job at the Fox’s Little Lake Butte des Morts The largest river cleanup project ever attempted in North America is using geotextile tubes as a key component in the …

Selecting reinforced fill soil for MSE retaining walls

June 1, 2006

A full-scale field test is currently being conducted to establish properties for “high fines” reinforced soils and associated design controls that give acceptable MSE wall performance. By Richard P. Stulgis Mechanically Stabilized Earth (MSE) retaining walls on public sector transportation projects are generally conservatively designed with “low fines” reinforced soils. Private MSE walls are less …

The enhancement of interface shear strength between two nonwoven geotextiles

April 1, 2006

By Gregory N. Richardson and Pieter K. Scheer Introduction and problem statement Interfaces involving nonwoven to nonwoven geotextile surfaces are sometimes part of the design of landfill liner systems. This is most likely the case in a double-liner system where a geosynthetic clay liner (GCL) is often designed below the upper (primary) geomembrane and is …

Berm is working on the railroad

Geosynthetic solution offers both separation and reinforcement for this Canadian rail project. Canadian Pacific Railway (CPR) is renowned for building rail lines through some of North America’s toughest terrain. Just west of Kenora, Ontario, near the Manitoba/Ontario border, the main CPR track crosses the Telford Marsh, an area of weak organic soil. A 250 m …

Eight ways to achieve improved retaining-wall performance

A refresher course for SRW success. By Michael R. Simac Segmental Retaining Wall (SRW) performance can be improved greatly by implementing good construction techniques. Since SRW construction started some 20 years ago, a number of good guidelines have proven to be at the core of a properly executed project. This article highlights those techniques and …

Geotextiles

These products are engineered to provide cost-effective solutions to meet specific design requirements for separation, reinforcement, filtration, drainage, and protection applications. Although engineers have developed numerous applications for geotextiles, there are five major functions: separation, reinforcement, filtration, drainage, and protection. The major geotextile classifications are woven, nonwoven, and knitted. Generally, woven fabrics exhibit high tensile …

Project Angostura

Geotextile tube coffer dam By Sören Schmidt The problem, the plan… The Angostura project is owned by Colbún, one of the largest energy producers in Chile. Angostura is a hydroelectric dam project with a capacity of 350mw. The dam is situated in the Bio-Bio River, a few kilometers downstream from two other Bio-Bio hydroelectric facilities. …

Geotextiles in unpaved roads: A 35-year case history

By William M. Hawkins Abstract This article presents current information on geotextiles installed experimentally in an unpaved road 35 years ago. In 1972, geotextiles were largely untested, and the site was set up as an accelerated field test to determine the comparative performances of several fabrics for use as a geotextile. But because the site …