| 摘要 |
A coupler having a grout filling pathway is provided to prevent the corrosion of a thread bar effectively, and to reduce a cross section by a gap in case of loading and to exclude the decrease of stress accordingly. A coupler having a grout filling pathway in a space in a coupler of a micro-pile thread bar controls the corrosion of steel and to remove the decrease of stress by buffering an empty space between a coupler and a thread bar when placing concrete after coupling the existing micro-pile thread bar with a coupler, and prevents the corrosion of a thread bar, and reduces a cross section by a gap in case of loading and excludes the decrease of stress accordingly by processing the inside of the coupler and forming a groove(100) for a grout filling pathway, and then filling up a gap between a thread bar and a coupler. |
