Abstract
This is an experiment to examine if the fly-ash admixed in mortar affects the growth or progress of the corrosion of reinforcing steel.
The properties of the mortar of specimens are as follows; proportion—1:3-1:5, water cement fly-ash ratio (W/C+F)—58-103%, replacement of cement with fly-ash—0-60%. These specimens had been stored for 32 months in a railway tunnel. From the test results, it may be suggested that the corrosion on embeded reinforcing steel is not induced easely unless the replacement with fly-ash exceeds 30-40% and W/C+F is so large.
