DIEPKLOOF BRIDGE - REINFORCED EARTH® TRUE ABUTMENTS AFTER 37 YEARS

摘要

The Diepkloof Bridge abutments were constructed in 1980. The durability of the reinforcing strips was monitored after 11 years and again after 37 years. The galvanised steel reinforcing strips were designed for a 100-year service life, with 750 microns sacrificial thickness being allocated on each side. After 37 years the strips have lost approximately 15 microns of zinc on either side and, as yet, show no signs of any corrosion of the steel.