Field Evaluation of Corrosion Inhibitors for Concrete: Interim Report 1.211 Evaluation of Exposure Slabs Repaired with Corrosion Inhibitors

摘要

One hundred and fifty-six exposure slabs have been constructed with and without a211u001evariety of combinations of corrosion inhibiting admixtures and topically applied 211u001einhibitors. To accelerate corrosion one hundred and thirty-six of the slabs were 211u001econstructed with concrete that surrounded the top mat of reinforcement with 211u001echloride contents of 3, 6, 10, and 15 lb/cubic yard (1.8, 3.5, 5.9, and 8.9 kg/cu 211u001em). This paper presents the results from measurements made on the slabs in May 211u001e1998 after approximately 1 year of exposure. The measurements show that as the 211u001echloride ion content in the slabs increases, the macrocell current, macrocell 211u001epotential, half-cell potential, and rate of corrosion increase and the resistance 211u001edescreases.