| 摘要 |
PROBLEM TO BE SOLVED: To secure a cover with a spacer formed from a steel material such as CT shape steel and further to iteratively use the spacer without finally leaving the spacer in concrete by drawing away the spacer in parallel with installation of concrete.SOLUTION: A removable spacer is formed from a vertical material which includes a tip sharpened part and is removable by being drawn upwards, and an upper end portion of the removable spacer can be fixed by fastening a fixing jig installed in an upper end of a form. The removable spacer is inserted between the form and a reinforcing-bar while bringing one side thereof into contact with the form and when the removable spacer reaches predetermined depth, the upper end portion is fixed to the form by the fixing jig. After one layer of concrete is installed, the fixing jig is unfastened and the removable spacer is pulled up from concrete by a length of one layer. By repeating such operation, the spacer is removed completely. |
