Severe corrosion
Corrosion and delamination
Breakout and repairs using formwork
The finished repair
Conservation Case Studies
The Listening Mirrors, Kent
Like - for - Like Concrete Repairs
The three early warning sound mirrors on the Kent coast were built using reinforced concrete in the late 1920s and the early 1930s to detect the distant sounds of enemy aircraft approaching from over the English Channel. The reinforced concrete has deteriorated in the marine environment and many parts of the structure are suffering from corrosion of the reinforcements and the delamination of the concrete cover.
Rowan Technologies undertook a series of trials of various repair and rehabilitation methods to assess their suitability for these monuments. This included 'model' patch repairs of the damaged concrete on a like-for-like basis, to achieving a similar texture and surface finish to the original (see publications).
