A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
ULTRA HIGH STRENGTH CONCRETE
To provide ultra high strength concrete excellent in gap passing property and crack resistance, while having a high steel fiber mixing ratio.SOLUTION: In ultra high strength concrete containing cement, silica fume, water, a coarse aggregate, a fine aggregate, a chemical admixture, steel fibers and organic fibers, a water-binder ratio is 25 mass% or less, and a mixing ratio of steel fibers is 2 vol% or less and over 0.5 vol%. In the ultra high strength concrete, the organic fiber contains a polyacetal fiber, and the maximum size of the coarse aggregate is 15 mm or less, and a unit coarse aggregate bulk volume is 0.3-0.4 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アセタール系繊維を含み、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
To provide ultra high strength concrete excellent in gap passing property and crack resistance, while having a high steel fiber mixing ratio.SOLUTION: In ultra high strength concrete containing cement, silica fume, water, a coarse aggregate, a fine aggregate, a chemical admixture, steel fibers and organic fibers, a water-binder ratio is 25 mass% or less, and a mixing ratio of steel fibers is 2 vol% or less and over 0.5 vol%. In the ultra high strength concrete, the organic fiber contains a polyacetal fiber, and the maximum size of the coarse aggregate is 15 mm or less, and a unit coarse aggregate bulk volume is 0.3-0.4 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アセタール系繊維を含み、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
超高強度コンクリート
KIKUCHI TOSHIBUMI (author) / TAKAHASHI KEIICHI (author) / KURODA YASUHIRO (author) / ENDO YOSHIO (author) / TOZAWA MASAMI (author)
2019-12-19
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
| Engineering Index Backfile | 1967
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