A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
ULTRA-HIGH STRENGTH CONCRETE AND ITS MIXING METHOD
To provide ultra-high strength concrete excellent in gap passing property and crack resistance while having a high steel fiber mixing ratio, and a mixing method thereof.SOLUTION: The present invention provides the ultra-high strength concrete that contains cement, silica fume, water, coarse aggregate, fine aggregate, chemical admixture, steel fiber and organic fiber, and has a water/binder ratio of 25 wt.% or less and a steel fiber mixing ratio of more than 0.5 vol.% and 2 vol.% or less, in which the organic fiber includes a polypropylene fiber, a maximum size of the coarse aggregate is 15 mm or less, and the unit coarse aggregate bulk volume is 0.3 to 0.4 m/m.SELECTED DRAWING: None
【課題】鋼繊維混入率が高いながらも、間隙通過性及びひび割れ抵抗性に優れた超高強度コンクリート及びその調合方法を提供する。【解決手段】セメントと、シリカヒュームと、水と、粗骨材と、細骨材と、化学混和剤と、鋼繊維と、有機繊維とを含み、水結合材比が２５質量％以下、前記鋼繊維の混入率が０．５容積％超２容積％以下である超高強度コンクリートであって、前記有機繊維がポリプロピレン繊維を含み、前記粗骨材の最大寸法が１５ｍｍ以下であり、単位粗骨材かさ容積が０．３〜０．４ｍ３／ｍ３である、超高強度コンクリート。【選択図】なし
ULTRA-HIGH STRENGTH CONCRETE AND ITS MIXING METHOD
To provide ultra-high strength concrete excellent in gap passing property and crack resistance while having a high steel fiber mixing ratio, and a mixing method thereof.SOLUTION: The present invention provides the ultra-high strength concrete that contains cement, silica fume, water, coarse aggregate, fine aggregate, chemical admixture, steel fiber and organic fiber, and has a water/binder ratio of 25 wt.% or less and a steel fiber mixing ratio of more than 0.5 vol.% and 2 vol.% or less, in which the organic fiber includes a polypropylene fiber, a maximum size of the coarse aggregate is 15 mm or less, and the unit coarse aggregate bulk volume is 0.3 to 0.4 m/m.SELECTED DRAWING: None
【課題】鋼繊維混入率が高いながらも、間隙通過性及びひび割れ抵抗性に優れた超高強度コンクリート及びその調合方法を提供する。【解決手段】セメントと、シリカヒュームと、水と、粗骨材と、細骨材と、化学混和剤と、鋼繊維と、有機繊維とを含み、水結合材比が２５質量％以下、前記鋼繊維の混入率が０．５容積％超２容積％以下である超高強度コンクリートであって、前記有機繊維がポリプロピレン繊維を含み、前記粗骨材の最大寸法が１５ｍｍ以下であり、単位粗骨材かさ容積が０．３〜０．４ｍ３／ｍ３である、超高強度コンクリート。【選択図】なし
ULTRA-HIGH STRENGTH CONCRETE AND ITS MIXING METHOD
超高強度コンクリート及びその調合方法
KIKUCHI TOSHIBUMI (author) / TAKAHASHI KEIICHI (author) / KURODA YASUHIRO (author) / ENDO YOSHIO (author) / TOZAWA MASAMI (author)
2020-06-11
Patent
Electronic Resource
Japanese
| British Library Conference Proceedings | 1994
| Engineering Index Backfile | 1967
Study on the Compressive Strength and Mixing of Ultra-High Performance Concrete
| Trans Tech Publications | 2013