Roughening treatment method for ultra-high toughness concrete surface of large-span steel bridge deck

• Main Authors: ZHANG XIAOLEI, FAN DAOLIN, QI TAO, YOU XIANG, LIN XIAOXU, LIU YING, FANG BOQING
• Format: Patent
• Language: Chinese; English
• Published: 12.04.2022
• Subjects: ASSEMBLY OF BRIDGES; CONSTRUCTION OF BRIDGES; CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES; FIXED CONSTRUCTIONS; OR VIADUCTS

The invention discloses a roughening treatment method for an ultrahigh-toughness concrete surface of a large-span steel bridge deck. The roughening treatment method comprises the steps of surface cleaning, finish milling, surface flushing by using a high-pressure wool flushing machine, purging by using a high-pressure blower gun, shot blasting by using a dust-free automatic shot blasting machine, removal of exposed steel fibers and corrosion layers on the concrete surface, and subsequent asphalt process construction. The finish milling technology is adopted for the ultrahigh-toughness steel fiber concrete to increase the depth and friction coefficient of the roughened structure, the shot blasting technology is assisted to remove the exposed steel fiber corrosion layer on the surface layer, and meanwhile the specific surface area of the roughened structure is increased; the roughening method has no damage to the body structure of the ultrahigh-toughness concrete, meanwhile, a fine and uniform rough surface can