发明申请
- 专利标题: Structures and Components comprising Blast-Resistant Concrete also Suitable for Limiting Penetration of Ballistic Fragments
- 专利标题(中): 包括防混凝土的结构和组件也适用于限制弹道碎片的渗透
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申请号: US12775873申请日: 2010-05-07
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公开(公告)号: US20100221465A1公开(公告)日: 2010-09-02
- 发明人: Bartley P. Durst , Billy D. Neeley , Edward F. O'Neil , Toney K. Cummins
- 申请人: Bartley P. Durst , Billy D. Neeley , Edward F. O'Neil , Toney K. Cummins
- 主分类号: C04B7/02
- IPC分类号: C04B7/02 ; C04B14/04 ; C04B14/48 ; C04B14/40 ; C04B24/10 ; C04B24/00 ; C04B14/38 ; B28B1/20 ; B28B1/14 ; B29D23/00 ; C08K3/36
摘要:
Concrete structures and components with improved strength and toughness. A uniform mix of first constituents comprises: cement of Blaine fineness of 280-360 m2/kg; sand at a mass ratio of 0.75-1.25 of the cement; silica fume at a mass ratio of 0.15-0.4 of the cement; silica flour at a mass ratio of 0.15-0.3 of the cement; and microinclusions at a mass ratio up to 0.35 of the cement. This is then mixed with a blend of second constituents comprising a specified amount of an HRWRA and an amount of water at a mass ratio of 0.2-0.35 of the cement. This is mixed sufficiently to form a uniform cement-based paste to which an amount of macrofibers at a mass ratio of up to 0.35 of the cement is added to yield a uniform product. Nanoinclusions may be added to improve crack resistance and increase density.