AASHTO promulgated specifications for the design of mechanically stabilized earth (MSE) walls that define the characteristics of both the galvanized steel reinforcements and the backfill soils to be used in MSE wall construction. Although a few cases of poor performance have been documented, these occurrences are always correlated with a corrosive environment attributed to backfill or to site conditions that do not conform to the current design specifications. Data demonstrate that when good design and construction practices, as prescribed by AASHTO, are followed, the performance of metallic reinforcements exceeds current expectations for service life performance. The data also demonstrate that the current AASHTO metal loss model is unnecessarily conservative and that the AASHTO specifications should be revised to reflect documented in situ performance. To support this conclusion, the performance of galvanized steel reinforcements documented from nearly 150 observations distributed among 75 different sites throughout the United States and Europe are described, and these data are used as a basis to evaluate the metal loss model in the current AASHTO specifications.
Durability of Galvanized Soil Reinforcement
More than 30 Years of Experience with Mechanically Stabilized Earth
Transportation Research Record: Journal of the Transportation Research Board
Transportation Research Record: Journal of the Transportation Research Board ; 1975 , 1 ; 49-59
01.01.2006
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Transportation Research Record | 2006
|Galvanized reinforcement for concrete bridges
Tema Archiv | 1973
Surface Modification for Improved Adhesive Bond Durability on Galvanized Steel
British Library Conference Proceedings | 1997
|Environmental durability of epoxy adhesive/galvanized steel tensile shear joints
Kraftfahrwesen | 1988
|Surface modification for improved adhesive bond durability on galvanized steel
Kraftfahrwesen | 1997
|