Title:
Sodium Thiocyanate and Corrosion of Steel in Concrete and Mortar
Author(s):
Charles K. Nmai and Jack M. Corbo
Publication:
Concrete International
Volume:
11
Issue:
11
Appears on pages(s):
59-67
Keywords:
accelerating agents; admixtures; calcium chlorides; calcium nitrate; corrosion; reinforced concrete; sodium thiocyanates; Materials Research
DOI:
Date:
11/1/1989
Abstract:
Presents a detailed review of studies using electrochemical and time-to-corrosion test procedures for ordinary reinforcing steel and stress-corrosion cracking tests for prestressing wire to investigate the corrosivity of sodium thiocyanate. The data clearly indicate that sodium-thiocyanate-based admixtures either reduced or did not affect the corrosion rate of steel in concrete at the maximum dosage levels currently recommended. Brief summaries of some corrosion studies on the other three inorganic salts are also presented.