@article{oai:iot.repo.nii.ac.jp:00000227, author = {坂本, 大河 and 澤本, 武博 and 森濱, 和正 and 樋口, 正典 and 臺, 哲義 and SAKAMOTO, Taiga and SAWAMOTO, Takehiro and MORIHAMA, Kazumasa and Masanori, HIGUCHI and DAI, Akiyoshi}, issue = {10}, journal = {ものつくり大学紀要, The Bulletin of Institute of Technologists}, month = {}, note = {The durability of concrete slab is apt to be influenced by finish timing of the concrete surface. Therefore,the finish timing which is considered the bleeding and the setting time of the concrete slab is very important.However, it is not obvious that relation between the finish timing and the surface properties of concrete. In this study, the effects of the finish timing on the surface properties of reinforced concrete slab with the normal portland cement were examined. As a result, the surface tensile strength fell about 80% when the concrete slab was finished during seeping bleeding water from the concrete surface. In case finishing agent was used, workability, the surface tensile strength and the rebound number could be making progress when the concrete slab was finished at initial set. The water absorption velocity of concrete surface was most slowly when concrete slab was finished at initial set, and the scratch width was smallest. The scaling velocity at early time was fast when the concrete slab was finished during seeping bleeding water from the concrete surface. However, the scaling velocity at late time didn’t change due to the finish timing of the concrete slab., 本研究では,普通ポルトランドセメントを用いたRC 床版の施工を想定し,仕上げ時期の違いが,表層品質に及ぼす影響について検討した.実験では,コンクリートの打込み直後から凝結始発時期まで期間で,仕上げ作業を行う時期を4 水準設定した.そして,仕上げ時期の違いが,表層品質に及ぼす影響について,引っかき傷試験,反発度試験,表層引張試験,表層透気試験,表面吸水試験およびスケーリング試験を行い,適切な仕上げ時期の検討を行った.}, pages = {21--27}, title = {コンクリート床版の表層品質に及ぼす仕上げ時期の影響}, year = {2021}, yomi = {サカモト, タイガ and サワモト, タケヒロ and モリハマ, カズマサ and ヒグチ, マサノリ and ダイ, アキヨシ} }