公开(公告)号：US20050108981A1

公开(公告)日：2005-05-26

申请号：US10510029

申请日：2003-05-30

申请人： Tsutomu Kadotani ,  Hidetoshi Miyauchi ,  Hiroshi Muguruma ,  Yusuke Kumamoto ,  Shin Narui ,  Yoshitaka Nishida ,  Motoo Shimizu

发明人： Tsutomu Kadotani ,  Hidetoshi Miyauchi ,  Hiroshi Muguruma ,  Yusuke Kumamoto ,  Shin Narui ,  Yoshitaka Nishida ,  Motoo Shimizu

IPC分类号： E01D1/00 ,  E01D2/00 ,  E01D19/16 ,  E01D101/24 ,  E01D101/40 ,  E04C5/10 ,  E04G21/12 ,  E04B1/00

CPC分类号： E04C5/10 ,  E01D19/16

摘要： In the present invention, testing is performed by injecting grout (G) into a full-scale specimen comprising a cable that is fabricated at a place other than a construction site. The cable has a sheath made of a transparent material and has the same three-dimensional configuration as that of an internal cable (2°) at the construction site. Alternatively, grout (G) is injected into a partial specimen comprising a lengthwise part of the cable where an air trap is likely to occur. The testing is performed under a plurality of different testing conditions. The best grouting conditions are selected from testing results and applied to grouting actually carried out at the construction site. With the conventional method of grouting an internal cable of a post-tensioned prestressed-concrete structure, it is difficult to check at the construction site whether or not the internal cable is filled with grout without an air trap remaining therein because the cable is laid in concrete and hence the sheath (3′) is hidden by the concrete. It is possible according to the present invention to provide a post-tensioned prestressed-concrete structure free from an air trap (V) in the sheath and hence free from the danger of corrosion or breaking of prestressing steel used in the cable.

摘要翻译： 在本发明中，通过将灌浆（G）注入到包括在施工现场以外的地方制造的电缆的全尺寸试样来进行试验。 电缆具有由透明材料制成的护套，并且具有与施工现场的内部电缆（2°）相同的三维构造。 或者，将浆料（G）注入包括可能发生空气阱的电缆的纵向部分的部分样品。 测试在多个不同的测试条件下进行。 最佳灌浆条件选自试验结果，适用于施工现场实际进行的灌浆。 采用传统的注浆后预应力混凝土结构内部电缆的方法，难以在施工现场检查内部电缆是否填充有水泥浆，而不会留下空气阱，因为电缆铺设在 混凝土，因此护套（3'）被混凝土隐藏。 根据本发明，可以提供一种在护套中没有空气阱（V）的后张紧的预应力混凝土结构，因此没有在电缆中使用的预应力钢的腐蚀或断裂的危险。

公开(公告)号：US20060006257A1

公开(公告)日：2006-01-12

申请号：US10885133

申请日：2004-07-07

申请人： Shin Narui

发明人： Shin Narui

IPC分类号： B02C19/00

CPC分类号： E04G23/08 ,  E01C23/128

摘要： A concrete surface layer fragmentizing method of fragmentizing a surface layer of a concrete structure by a jet formed by ejecting high pressure water from a nozzle. The method comprises adjusting control parameters for controlling the ejection and movement of the jet, including a fragmentation width, a standoff distance, ejection water pressure, ejection water amount, nozzle lateral movement speed, and the number of nozzle swing times; and sweeping the jet over a predetermined range so as to fragmentize only deteriorated concrete deteriorated in strength with leaving sound concrete (selective excavation).

摘要翻译： 一种混凝土表层破碎方法，其通过由喷嘴喷射高压水而形成的喷流而使混凝土结构的表面层破碎。 该方法包括调整用于控制射流的喷射和移动的控制参数，包括碎片宽度，间隔距离，喷射水压，喷射水量，喷嘴横向移动速度和喷嘴摆动次数; 并将喷气机扫过预定的范围，以便仅留下声音混凝土（选择性挖掘）才能破坏强度劣化的劣化混凝土。