Лако-красочные материалы — производство

6.1 Concrete repair

The 1950s and 1960s saw an enormous growth in new construction and many faults are now becoming evident in some of the structures constructed during these years of peak activity. Today, repair and refurbishment is often preferred to demolition and reconstruction with the result that the maintenance and refurbishment market now represents approximately 50% of the construction industry workload of £37bn per annum. Concrete repair is no exception and currently represents a market of at least £500m annually. A variety of concrete repair methods have been developed many of which rely on adhesion between a repair material and the concrete substrate. The more important aspects of concrete repair will now be discussed under the headings of resin injection, patches, coatings and sealants and finally the implications of property mismatch.