公开(公告)号：US20240270639A1

公开(公告)日：2024-08-15

申请号：US18627000

申请日：2024-04-04

申请人： TAKE CITE CO., LTD.

发明人： Masanari TAKEDA

IPC分类号： C04B14/28 ,  B28C7/16 ,  C04B14/26 ,  C04B16/02 ,  C04B18/24 ,  C04B111/00 ,  E04G21/04

CPC分类号： C04B14/28 ,  B28C7/16 ,  C04B16/02 ,  C04B18/243 ,  E04G21/04 ,  C04B14/26 ,  C04B2111/00344

摘要： A method of pressure-pumping a ready-mixed concrete includes pouring a preceding material for pumping into a piping, then, pouring the ready-mixed concrete into the piping, and pressure-pumping the preceding material and the ready-mixed concrete, so that a lubricant layer formed of the preceding material is formed on an inner surface of the piping to thereby pressure-pump the ready-mixed concrete inside the lubricant layer made of the preceding material. The preceding material includes calcium carbonate as a main material, to which cellulose nanofibers and erythorobic acid are added, and an amount of the cellulose nanofibers is 0.005 wt % or more.

公开(公告)号：US20200339474A1

公开(公告)日：2020-10-29

申请号：US16962321

申请日：2019-01-11

申请人： TAKE CITE CO., LTD.

发明人： Masanari TAKEDA

IPC分类号： C04B16/02 ,  E04G21/04 ,  B28C7/16 ,  C04B18/24 ,  C04B12/00

摘要： The purpose of the present invention is to provide a preceding material for pumping, a feeding of a very small amount thereof being capable of extending the pumping distance. The preceding material for pumping includes an added cellulose nanofiber and having calcium carbonate as a main component. The present invention enables a thin lubricant layer of a uniform thickness to be formed inside a pipe even when the pipe has a slightly roughened inner surface due to, for example, residues of solidified cement paste or the like, allowing the pumping distance to be extended. Thus, the present invention is suitable, for example, for casting ready-mixed concrete at various construction sites.