Paper by VERHOEVEN AUDENHOVE from ISCR 7th 1994 Vienna Austria
As a number of CRC sections were gradually reaching a respectable age, the CRIC undertook an investigation in 1990 on possible corrosion of reinforcements. The close average spacing ot cracks (40 to 60 cm) in sections with 0.85% of steel and a bituminous base course was surprising. On the other hand, crack patterns are widely different in sections with only 0.67 % where the pavement is placed directly on the lean concrete base course. In these sections the average crack spacing was bout 1.50 m. Generally speaking, corrosion can be rated as very light.