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C236
Durability of Geosynthetics for Highway Applications

Jeffrey Havelin, PE

Various aspects of geosynthetic durability are addressed in this (one-hour) course in order to develop procedures that could be used to predict long-term strength losses of geosynthetics used in highway applications. This information is essential to designers for allowing tensile capacity for geosynthetics used primarily in mechanically stabilized earth (MSE) retaining walls, reinforced soil slopes, and foundation stabilization.

The study was conducted in stages, each stage building on the knowledge previously gained. The main objectives addressed were to: (1) develop testing protocols necessary to quantify any strength reduction due to aging or stress (stress cracking only) mechanisms for polymeric reinforcement materials (geosynthetics), and (2) develop testing protocols for confined stress-strain testing, which could more accurately characterize key engineering properties. The results of the experimental tasks are discussed on the following pages.

This course is based entirely on publication FHWA-RD-01-050 Durability of Geosynthetics for Highway Applications, on a summary of four previously published reports on this topic. This course includes a multiple-choice quiz at the end, which is designed to enhance the understanding of course materials. You will be quizzed on the attached document in its entirety.


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NY PE & PLS: You must choose courses that are technical in nature or related to matters of laws and ethics contributing to the health and welfare of the public. NY Board does not accept courses related to office management, risk management, leadership, marketing, accounting, financial planning, real estate, and basic CAD. Specific course topics that are on the borderline and are not acceptable by the NY Board have been noted under the course description on our website.

AIA Members: You must take the courses listed under the category "AIA/CES Registered Courses" if you want us to report your Learning Units (LUs) to AIA/CES. If you take courses not registered with AIA/CES, you need to report the earned Learning Units (not qualified for HSW credits) using Self Report Form provided by AIA/CES.

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