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1.
公开(公告)号:US20050005823A1
公开(公告)日:2005-01-13
申请号:US10852663
申请日:2004-05-25
IPC分类号: C04B20/00 , C04B14/28 , C04B18/08 , C04B20/10 , C04B22/00 , C04B24/00 , C04B28/02 , C04B40/00
CPC分类号: C04B20/10 , C04B40/0028 , C04B40/0042 , Y02W30/92 , C04B20/026 , C04B28/02 , C04B2103/00 , C04B18/08 , C04B2103/0088
摘要: The invention relates to a particular additive and method for dispersing an admixture in a cementitious composition comprising a hydraulic cement, to provide activation of the admixture on mixing of the cementitious composition with water wherein the particles of the particulate additive comprise a carrier comprising pozzolanic material and an admixture bound to the particulate carrier wherein the particles of the additive have a median particle size of between one tenth and one half of the median particle size of the cement used in the cementitious composition.
摘要翻译: 本发明涉及一种用于将混合物分散在包含水硬性水泥的水泥组合物中的特定添加剂和方法,以在水泥组合物与水混合时提供混合物的活化,其中颗粒添加剂的颗粒包括包含火山灰材料的载体, 与颗粒载体结合的混合物,其中添加剂的颗粒的中值粒度为水泥组合物中使用的水泥的中值粒径的十分之一和一半。
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公开(公告)号:US20070181201A1
公开(公告)日:2007-08-09
申请号:US10595869
申请日:2004-11-19
申请人: Stephen Baker , John Gourley , Henrik Stang
发明人: Stephen Baker , John Gourley , Henrik Stang
IPC分类号: F16L9/18
CPC分类号: F16L9/085
摘要: A cementitious pipe as a tubular wall of fibre-reinforced cementitious pseudo strain hardening (PSH) matrix. The matrix and a wall thickness to diameter ratio within a range are such that the pipe exhibits characteristic behaviour in diametral quasi-static bending under a 3-edge bearing method. The behaviour is such that a stress versus relative displacement curve for the pipe exhibits a substantially linear elastic region having a first slope within first limits, and from the LOP to the MOR for the pipe, a PSH region which, beyond a possible transition region, has a slope which is less than that of the elastic region and is within second limits.
摘要翻译: 一种水泥管作为纤维增强水泥基拟应变硬化(PSH)基体的管状壁。 基体和壁厚比在一定范围内是这样的,即管子在3边缘轴承法下呈直径准静态弯曲的特征。 这种行为使得管的应力与相对位移曲线呈现出在第一极限内具有第一斜率,并且从管的LOP到MOR的基本上线性的弹性区域,超过可能的过渡区域的PSH区域, 具有小于弹性区域的斜率并且在第二限度内。
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