Underwater repair damaged components not dispersed concrete under water

Underwater component damage repair materials to repair damaged at the underwater parts of components shall meet the following requirements: ( 1) Underwater cut surface of the sea creature in addition to local damage, loose concrete and other fragile attachments to reveal hard part; ( 2) High pressure fresh water pressure is not less than 20 mpa for repairing concrete surface; ( 3) Had a little section of pile, column, such as cracks and local breakage, the underwater repair layer; ( 4) Large defects or cross section of component larger cracks and local breakage of hard coated components, adopt the method of pouring underwater non-dispersion concrete repair; ( 5) Using underwater concrete repair, in certain scope the concrete damage template, and then by the methods of catheter or hopper pouring underwater non-dispersion concrete.