The enhancement of interface shear strength between two nonwoven geotextiles

April 1, 2006  |  Products

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 of…
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Eight ways to achieve improved retaining-wall performance

April 1, 2006  |  Products

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 …
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Versavoid Modular Geovoid System allows for use and reuse of water

August 5, 2001  |  Products

The Versavoid Modular Geovoid System, a lightweight porous polypropylene structured cube about 50cm2, acts as a drainage system when placed on top of a trench or void lined with a geotextile. By plumbing a filtration unit into the system, stormwater can be passed into a storage tank and recycled for…
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Apparent cohesion leads to eventual failure

January 1, 1970  |  Products

These photos show a wall failure next to a corner. This failure occurred in an area where successive triangular sectors of geogrid layers were not installed. Failure is to be expected because reinforced walls without reinforcement should fail. Curiously, this failure occurred about one year after th…
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Inadequate compaction necessitates massive remedy

January 1, 1970  |  Products

These photos show a massive remedy utilizing anchors needed for an initially inexpensive geotextile reinforced wall. One reason that necessitated this remedy is poor compaction. Also, risers collecting surface water were embedded in the reinforced soil zone. These risers were connected sequentially …
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Geotextiles

January 1, 1970  |  Products

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: separa…
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Redundancy that helped a wall survive an extremely high seismic load

January 1, 1970  |  Products

This photo shows a geosynthetic-reinforced soil wall that survived a substantially higher seismic load than its designed seismic load. This resulted from redundancy due to use of soil design Φ value lower than its actual value. Furthermore, the substantial apparent cohesion and toe resistance were …
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Geotextile puncture resistance

January 1, 1970  |  Products

From the GMA Techline RE: Geotextile puncture resistance [I have] a question for you on geotextile puncture resistance. I was looking through your book to refresh my memory on the calculation procedure on geotextile puncture resistance, Section 2.5.4. I saw the scaling factors S2 and S3 and the exam…
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Project Angostura

January 1, 1970  |  Products

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 d…
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Geogrids

January 1, 1970  |  Products

Geogrid products are designed for reinforcement and, characteristically, are integrally connected to elements separated by in-plane apertures. Geogrids form a distinct category of geosynthetics designed for reinforcement. These products are characterized by a relatively high tensile strength and a u…
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