This paper deals with erosion-corrosion of steel in contact with flowing fresh concrete. Results of tests
performed in fresh mortar on rotating cylindrical and disk electrodes are reported. The fresh mortar was
manufactured by using chemical admixtures in order to retain constant workability during long time
tests. Electrochemical and weight loss tests were conducted. SEM analysis was carried out to evaluate
damage morphology. Damage mechanisms and corrosion behavior are discussed. Effect of rotating
speed, potential and steel hardness has been considered.
Keywords: erosion corrosion, flowing fresh concrete, concrete mixing devices, concrete pumps