Shrinkable core for forming hollow precast load bearing wall panels

    公开(公告)号:US09878466B2

    公开(公告)日:2018-01-30

    申请号:US14431668

    申请日:2013-09-26

    摘要: A shrinkable core (100) for inserting in a mold (200) for forming a precast load bearing wall panel having a cavity, the shrinkable core (100) comprises a first wall (110) and a second wall (120), a first side element (112) and a second side element (122), and a spacing element (130). The first wall (110) and second wall (120) are spaced from each other by a first distance (d1) to define an internal region (115) in-between. The first side element (112) and the second side element (122) are arranged to close opposite edge portions of the spaced first wall (110) and second wall (120) such that fluid concrete cannot pass the opposite edge portions to get into the internal region (115), the first side element (112) and second side element (122) being spaced by a second distance (d2). The spacing element (130) is configured to vary at least one of the first distance (d1) and the second distance (d2) such that a circumference along the first and second walls (110, 120) and the first and second side elements (112, 122) shrinks monotonically with lowering said at least one distance.

    Concrete unit and methods
    28.
    发明授权

    公开(公告)号:US09677271B2

    公开(公告)日:2017-06-13

    申请号:US14878695

    申请日:2015-10-08

    发明人: Nicole Rae Forbes

    IPC分类号: E04B5/04 E04C2/30 E04C2/04

    CPC分类号: E04C2/30 E04C2/044 E04C2/326

    摘要: A concrete unit includes a six sided body having three pairs of opposed rectangular faces. Two opposed faces each has an irregular three dimensional pattern extending across the entire face to provide two aesthetic faces on the unit. The two opposed faces have patterns that are mirror images of each other such that when two of the units are placed with their patterned faces aligned and in contact, the three dimensional patterns on the opposed faces nest to minimize the space between the adjacent edges of the units. The concrete units may be used as steps or in other applications.

    CONCRETE UNIT AND METHODS
    30.
    发明申请

    公开(公告)号:US20170101780A1

    公开(公告)日:2017-04-13

    申请号:US14878695

    申请日:2015-10-08

    发明人: NICOLE Rae FORBES

    IPC分类号: E04C2/30 E04C2/04

    CPC分类号: E04C2/30 E04C2/044 E04C2/326

    摘要: A concrete unit includes a six sided body having three pairs of opposed rectangular faces. Two opposed faces each has an irregular three dimensional pattern extending across the entire face to provide two aesthetic faces on the unit. The two opposed faces have patterns that are mirror images of each other such that when two of the units are placed with their patterned faces aligned and in contact, the three dimensional patterns on the opposed faces nest to minimize the space between the adjacent edges of the units. The concrete units may be used as steps or in other applications.