• THAT’S A FACT
    If America’s 47,744 miles of interstate highways were paved with concrete, 10,989,557 gallons of fuel would be saved each day.
  • EAR TO THE GROUND
    Service Life Engineering has become its own powerful field of study with immense impact on the future.
  • THAT’S A FACT
    Concrete is a light color, which reflects from 33 to 50 per cent more light than asphalt, and can even lower the average town temperature by six degrees.
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Evaluation of Concrete Repair Systems for Corrosion Induced Distress

Corrosion of reinforcing steel in concrete is a major cause of concrete distress. Depending upon the severity of the corrosion induced damage and projected use of the structure; owners will repair the damaged area, conduct major rehabilitation, or replace the structure. Often repairs are the most economical and timely solution. The challenge for the owner and specifying engineers is that there is no standard means of comparing different repair systems. In addition, developers of new repair systems do not have a standard protocol to demonstrate that their products work as intended. To address the lack of a protocol for evaluating repair systems, the US Bureau of Reclamation initiated a research program to develop a repair system testing protocol. This program is being run at Tourney Consulting Group and is currently over 70% completed. An expert panel from the Strategic Development Council of ACI is providing additional guidance to the program. Two configurations exist; one to evaluate repairs that would be applied topically to the concrete surface, and another where portions of some specimens were partitioned to have a high, early chloride-content, “hot-spots,” so that patch repair materials can be evaluated as to their performance in the patch and their effects on corrosion adjacent to the patch. This test program and a previously completed study of a similar nature show that this protocol can be used to evaluate repair systems for corroding reinforced concrete.