コンクリート床版橋施工におけるノロ漏出が構造体コンクリート強度に及ぼす影響に関する研究

概要

論文の詳細を見る
In recent years, the wider width and the smaller number of main girders for the highway bridges have been adopted in order to abridge the constructional and maintenance works reasonably. The metal hangers on the girder to construct the timbering, for the painting work and so on are indispensable, but there are some problems from the point of view of attractive scene and fatigue of main girder ; in addition, the increase of total cost inevitably results from such a metal hangers, too. Particularly, in the case of construction of concrete slab for the bridge pavement, the concrete sludge leaks out of the opening between the upper flange of main girder and the form of slab and it stains not only the girder itself, but also it becomes a structural weak point from the viewpoint of the durability. Therefore, the special leakage-proof packing has been developed in order to overcome those difficulties. The present paper, particularly deals with the verification of the effect of the sludge leakage out of the opening part on the concrete strength by virtue of the structural models.
日本材料学会の論文