Research Report 81 Repair of cracked reinforced concrete: assessment of injection methods

Publication Year

1986

Document Status

Current

Abstract

Chloride de-icing salts are used for winter maintenance on highway bridges and are known to penetrate concrete and cause corrosion of the reinforcement. Cracks, which provide easy routes for chlorides to reach the steel, might be sealed with reactive resins or with liquid silicate solution. The object of this work was to assess the structural implications of repair by injection and its effectiveness in preventing ingress of de-icing salts into the concrete. Concrete slabs were cracked, held under a constant load and repaired using various injection techniques.

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