ピアノ線によるコンクリート打放し表面の気泡低減効果

概要

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Finishing face of RC members is very important in order not only to maintain durability and watertightness, but also to make the appearance of a concrete building beautiful. In this paper, reduction effects of surface cellular boids on fair-faced concrete member by using piano wire are discussed. This experimental program tries to clarify the principal mechanism of decreasing action on cement mortar specimens which piano wire taking away air cell of boudary plane between fresh mortar and formwork. From the test results, it is found that the best condition of the reduction effect of surface air cell by piano wire for cement mortar specimens, are as follows: 1) diameter of piano wire; φ 5.8mm, 2) insert distance from formwork; 0mm, 3) pull out times; 10 minutes and 4) intervals of insert; 10mm.
中部大学の論文