ABSTRACT
There are several aspects to troubleshooting in concrete technology. One of them, separation of its costing from that of quality control (QC), was raised in the first edition and is repeated here:
Another is the examination of existing structures with a view to repair. However we note the following points to consider:
• The field is a very extensive and rapidly developing one and, to provide good professional service, requires that the practitioner keep fully up to date with a myriad of constantly changing techniques and proprietary materials. Repairs to concrete structures are very often temporary (usually unintentionally) and may provide only a shortterm cosmetic effect at considerable expense.
