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A platform for research: civil engineering, architecture and urbanism
FORMWORK MATERIAL FOR CONCRETE VERTICAL PLACING SEAM JOINT
PROBLEM TO BE SOLVED: To provide a formwork material for concrete vertical placing seam joints capable of improving discharge performance of bubbles and breathing water and achieving stable adhesion strength irrespective of the size of aggregate of concrete.SOLUTION: In a sheet material 1, truncated quadrangular pyramids 2 that are continuous in a lattice pattern and V-shaped grooves 3 in the vicinity thereof form irregularities. A top plane side 2a of the truncated quadrangular pyramid 2 is attached to a sheathing board 5. Truncated quadrangular pyramidal recesses 2b on an inner surface of the sheathing board 5 are in contact with each other on lines 2c and an adhesion area of the old and new concrete increases. At a vertical placing joint of hardened old concrete 4, truncated quadrangular pyramidal projections 6 and V-shaped recesses 7 therearound are formed. Since the V-shaped recesses 7 continue linearly in the vertical direction and the horizontal direction, when casting new concrete 8, bubbles and breathing water generated in the new concrete 8 along the vertically continuous V-shaped recesses are promptly discharged to the outside. The truncated quadrangular pyramidal recesses 2b are smaller than the size of a coarse aggregate 9.SELECTED DRAWING: Figure 1
【課題】気泡やブリージング水の排出性向上が図れコンクリートの骨材の大小に関わらず安定した付着強度が得られるコンクリート鉛直打継目用の型枠資材を提供する。【解決手段】シート材１は格子状に連続する四角錐台２とその周辺のＶ字状の溝部３が凹凸を形成する。四角錐台２の頂部平面側２ａを堰板５に貼設する。堰板５の内面の四角錘台凹部２ｂ同士は線上２ｃで接しており新旧コンクリートの付着面積が増加する。硬化した旧コンクリート４の鉛直打継目には四角錘台凸部６とその周囲のＶ字状凹部７を形成する。Ｖ字状凹部７は鉛直方向及び水平方向に直線状に連続するため新コンクリート８を打設する際、鉛直に連続するＶ字状凹部に沿って新コンクリート８内に生じた気泡やブリージング水は外部に速やかに排出される。四角錘台凹部２ｂは粗骨材９の寸法より小さい大きさとする。【選択図】図１
FORMWORK MATERIAL FOR CONCRETE VERTICAL PLACING SEAM JOINT
PROBLEM TO BE SOLVED: To provide a formwork material for concrete vertical placing seam joints capable of improving discharge performance of bubbles and breathing water and achieving stable adhesion strength irrespective of the size of aggregate of concrete.SOLUTION: In a sheet material 1, truncated quadrangular pyramids 2 that are continuous in a lattice pattern and V-shaped grooves 3 in the vicinity thereof form irregularities. A top plane side 2a of the truncated quadrangular pyramid 2 is attached to a sheathing board 5. Truncated quadrangular pyramidal recesses 2b on an inner surface of the sheathing board 5 are in contact with each other on lines 2c and an adhesion area of the old and new concrete increases. At a vertical placing joint of hardened old concrete 4, truncated quadrangular pyramidal projections 6 and V-shaped recesses 7 therearound are formed. Since the V-shaped recesses 7 continue linearly in the vertical direction and the horizontal direction, when casting new concrete 8, bubbles and breathing water generated in the new concrete 8 along the vertically continuous V-shaped recesses are promptly discharged to the outside. The truncated quadrangular pyramidal recesses 2b are smaller than the size of a coarse aggregate 9.SELECTED DRAWING: Figure 1
【課題】気泡やブリージング水の排出性向上が図れコンクリートの骨材の大小に関わらず安定した付着強度が得られるコンクリート鉛直打継目用の型枠資材を提供する。【解決手段】シート材１は格子状に連続する四角錐台２とその周辺のＶ字状の溝部３が凹凸を形成する。四角錐台２の頂部平面側２ａを堰板５に貼設する。堰板５の内面の四角錘台凹部２ｂ同士は線上２ｃで接しており新旧コンクリートの付着面積が増加する。硬化した旧コンクリート４の鉛直打継目には四角錘台凸部６とその周囲のＶ字状凹部７を形成する。Ｖ字状凹部７は鉛直方向及び水平方向に直線状に連続するため新コンクリート８を打設する際、鉛直に連続するＶ字状凹部に沿って新コンクリート８内に生じた気泡やブリージング水は外部に速やかに排出される。四角錘台凹部２ｂは粗骨材９の寸法より小さい大きさとする。【選択図】図１
FORMWORK MATERIAL FOR CONCRETE VERTICAL PLACING SEAM JOINT
コンクリート鉛直打継目用の型枠資材
SHIMAZU KOICHI (author) / ARAI TATSUO (author) / DAIYOKU AKINORI (author)
2018-06-07
Patent
Electronic Resource
Japanese
IPC:
E04G
SCAFFOLDING
,
Baugerüste