A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
MACHINE COMPONENT AND MANUFACTURING METHOD THEREFOR
PROBLEM TO BE SOLVED: To provide a machine component capable of downsizing, weight saving, and providing high intensity and easy to be manufactured.SOLUTION: There is provided a machine component consisting of a cured body of a cement composition containing cement, silica fume with BET specific surface area of 15 to 25 m/g, an inorganic powder with 50% volume accumulation particle diameter of 0.8 to 5 μm, an aggregate with maximum particle diameter of 1.2 mm or less, a high performance water-reducing agent, an antifoamer, and water and having percentage of the cement of 55 to 65 vol.%, percentage of the silica fume of 5 to 25 vol.%, and percentage of the inorganic powder of 15 to 35 vol.% in total amount of 100 vol.% of the cement, the silica fume, and the inorganic powder.SELECTED DRAWING: None
【課題】小型化、軽量化、及び高強度化が可能であり、かつ、製造が容易な機械部品を提供する。【解決手段】セメント、ＢＥＴ比表面積が１５〜２５ｍ２／ｇのシリカフューム、５０％体積累積粒径が０．８〜５μｍの無機粉末、最大粒径が１．２ｍｍ以下の骨材、高性能減水剤、消泡剤及び水を含み、かつセメント、シリカフューム及び無機粉末の合計量１００体積％中、セメントの割合が５５〜６５体積％、シリカフュームの割合が５〜２５体積％、無機粉末の割合が１５〜３５体積％であるセメント組成物の硬化体からなる機械部品。【選択図】なし
MACHINE COMPONENT AND MANUFACTURING METHOD THEREFOR
PROBLEM TO BE SOLVED: To provide a machine component capable of downsizing, weight saving, and providing high intensity and easy to be manufactured.SOLUTION: There is provided a machine component consisting of a cured body of a cement composition containing cement, silica fume with BET specific surface area of 15 to 25 m/g, an inorganic powder with 50% volume accumulation particle diameter of 0.8 to 5 μm, an aggregate with maximum particle diameter of 1.2 mm or less, a high performance water-reducing agent, an antifoamer, and water and having percentage of the cement of 55 to 65 vol.%, percentage of the silica fume of 5 to 25 vol.%, and percentage of the inorganic powder of 15 to 35 vol.% in total amount of 100 vol.% of the cement, the silica fume, and the inorganic powder.SELECTED DRAWING: None
【課題】小型化、軽量化、及び高強度化が可能であり、かつ、製造が容易な機械部品を提供する。【解決手段】セメント、ＢＥＴ比表面積が１５〜２５ｍ２／ｇのシリカフューム、５０％体積累積粒径が０．８〜５μｍの無機粉末、最大粒径が１．２ｍｍ以下の骨材、高性能減水剤、消泡剤及び水を含み、かつセメント、シリカフューム及び無機粉末の合計量１００体積％中、セメントの割合が５５〜６５体積％、シリカフュームの割合が５〜２５体積％、無機粉末の割合が１５〜３５体積％であるセメント組成物の硬化体からなる機械部品。【選択図】なし
MACHINE COMPONENT AND MANUFACTURING METHOD THEREFOR
機械部品及びその製造方法
NAKANISHI HIROSHI (author) / OGAWA YOJI (author)
2017-06-01
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
/
F16B
DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES
,
Vorrichtungen zum Befestigen oder Sichern von Konstruktionselementen oder Maschinenteilen, z.B. Nägel, Bolzen, Schrauben, Sprengringe, Klemmen, Klammern oder Keile
/
F16C
SHAFTS
,
Wellen
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