Repair of concrete
Concrete in service will be subject to chemical and physical changes, as well as mechanical damage. Durable concrete will require little maintenance in its lifetime, however some form of repair may be necessary where workmanship or design has been inadequate and when physical damage has occured.
Repair concrete can be as follows:
a. Resin mortars, generally used for small volume repairs,
b. Cementitious or polymer-modified mortars or concretes for extensive patch repairs,
c. For large volume repair, re-casting behind formwork is used, alternatively a sprayed concrete.