Title:
中流動コンクリートの配合選定方法と中流動コンクリート
Document Type and Number:
Japanese Patent JP7354503
Kind Code:
B2
Abstract:
To provide a method for selecting a composition of medium-fluidity concrete that satisfies either or both of gap passage property and material separation resistance in addition to self-filling property.SOLUTION: When selecting the composition of medium-fluidity concrete, in a state of fresh concrete, vibration is input to the sample medium-fluidity concrete in only one direction. Under the vibration, the composition is selected based on the relationship between vibration energy (Ef) related to fluidity required for slump flow to reach 600 mm using a slump flow tester, and either or both of vibration energy (Eu) related to filling property required for U-shaped filling height to reach 350 mm using a U-shaped filling tester and vibration energy (Es) related to separation resistance when the residual ratio of coarse aggregate is 70% in the separation resistance test.SELECTED DRAWING: Figure 7
Inventors:
Shun Liang
Application Number:
JP2020175307A
Publication Date:
October 03, 2023
Filing Date:
October 19, 2020
Export Citation:
Assignee:
Taisei Corporation
International Classes:
E21D11/12; C04B28/02; G01N11/00; G01N33/38
Domestic Patent References:
| JP2019191097A | ||||
| JP2019191096A | ||||
| JP2021143944A | ||||
| JP7244043A | ||||
| JP2020090410A |
Other References:
中村泰誠 他2名,中流動覆工コンクリートの配合設計手法の検討,平成21年度 土木学会北海道支部 論文報告集,第66号,日本,土木学会,2009年,https://www.jsce.or.jp/branch/hokkaido/_contents/active/h22/100115/E/E-10.pdf
Attorney, Agent or Firm:
Yasuyuki Yamada
Zentaro Hasebe
Masahiro Nakamura
Zentaro Hasebe
Masahiro Nakamura
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