ABSTRACT
Subsequent to drilling, specimens were broken open and the reinforcing bars removed. Adhering concrete was removed manually before the bars were cleaned in a 50% (by volume) solution of hydrochloric acid containing 1% hexamine as inhibitor to prevent acid attack on the metal. This solution cleans the bars of remaining concrete and all corrosion products. The bars were then washed, dried and weighed to enable weight loss due to corrosion to be determined by comparison with the original weights of the bars.
