Structural effects of alkali-silica reaction: technical guidance on appraisal of existing structures (1992)

This report has been prepared by an Institution task group and updates and replaces the advice given in the previous report structural effects of alkali-silica reaction - interim technical guidance on the appraisal of existing structures, originally published in December 1988.
It incorporates new data derived from research work carried out by UK organisations, papers presented at the 8th International alkali-aggregate reaction conference held in Kyoto in 1989 and additional field experience of the problem.

The report is in three parts, namely:
- ASR - the process and its effects
- assessment, appraisal and monitoring of structures
- research needs
These sections contain information on the development of ASR damage in the UK, the chemical process of ASR, and the diagnosis and assessment of expansion and cracking and its physical effects on concrete.
Guidance on the appraisal of strength and serviceability of ASR affected structures is also given in addition to advice on the management and monitoring of affected structures.
A summary of test procedures is also included as an appendix together with a substantial bibliography.