发明授权
- 专利标题： Hydraulic composition and process for producing concrete pile using the same
- 专利标题（中）： 用于生产混凝土桩的液压组成和工艺
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申请号： US34863申请日： 1993-03-19
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公开(公告)号： US5423634A公开(公告)日： 1995-06-13
- 发明人: Kotaro Fujita , Kazuto Yoshimori , Tomoyuki Sugaya , Yukinori Yamazaki , Takashi Suzuki , Satoshi Tanaka , Takahisa Okamoto
- 申请人： Kotaro Fujita , Kazuto Yoshimori , Tomoyuki Sugaya , Yukinori Yamazaki , Takashi Suzuki , Satoshi Tanaka , Takahisa Okamoto
- 申请人地址： JPX Tokyo
- 专利权人： Nihok Cement Company, Ltd.
- 当前专利权人： Nihok Cement Company, Ltd.
- 当前专利权人地址： JPX Tokyo
- 主分类号： B28B21/30
- IPC分类号： B28B21/30 ; C04B7/02 ; C04B7/36 ; C04B7/52 ; C04B24/28 ; C04B24/30 ; C04B28/04 ; E02D5/30 ; E03D7/00
摘要：
A hydraulic composition comprising (a) a cement composition prepared by subjecting size-adjusted cement having its particle size distribution adjusted to have a 50% pass particle diameter of from 2 to 7 .mu.m and a ratio of a 90% pass particle diameter to a 10% pass particle diameter of from 25 to 40 to a water-spraying treatment to increase the loss on ignition thereof by 0.5 to 2.0% by weight and (b) a water reducing agent; and a process for producing a concrete pile by using a mixture of the hydraulic composition and from 18 to 25% by weight of water based on the hydraulic composition. A mortar or concrete mixture of the hydraulic composition exhibits sufficient fluidity and provides a hardened product having a greatly improved compressive strength. The concrete pile produced by using the hydraulic composition has a compressive strength of 800 kgf/cm.sup.2 or higher at one day age.