下地コンクリートに拘束される左官モルタルのひび割れにおよぼす施工時期の影響

摘要

The purpose of this research is reducing the cracks produced in the plastering mortar that has contraction restrained by ground concrete about the outer wall and floor component of reinforced concrete buildings. It tried to evaluate the relation between the construction time of plastering mortar and the small crack produced on the mortar surface by this paper. The examination object which finished in the middle of the month every month of one year, and constructed mortar was exposed to the outdoors and indoor using the small concrete with plastering mortar specimens , and the generating situation of a crack was observed. Consequently, it was experimentally shown clearly that small cracks become easy to produce the time when temperature falls in one month after the mortar plastering.%本報ではモルタルの施工時期の影響を検討するために，1年間，rn毎月中旬に左官モルタル塗りを施した試験体を屋外および屋外に暴rn露し，ひび割れの発生状況を観察した結果を示した。この暴露試験rn結果に併せて，室内検証試験およびFEM解析を実施し，左官モルタrnル施工後初期の気温の変化に伴う温冷ムーブメントが左官モルタルrnのひび割れ発生に影響することを明らかにした。