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This document provides requirements and advice for repair or management in service of deteriorated concrete highway structures.
This document incorporates technical updates due to modern developments in construction techniques for repairing deteriorated concrete since publication of the previous advice note BA 35/90. The document also includes updated requirements following improvements in understanding of the mechanisms of internal deterioration of concrete (IDC), and more recent research into previously rare forms of concrete deterioration (thaumasite sulfate attack).
The document has been written for design of repair schemes complying with the relevant parts of BS EN 1504 [Ref 22.N] and the European Construction Products Regulation 2011/305/EU [Ref 29.I] and also covers management of deteriorated structures in service