公开(公告)号：US20200010362A1

公开(公告)日：2020-01-09

申请号：US16494521

申请日：2018-03-19

Applicant: TOKUYAMA CORPORATION

Inventor： Kohei OMURA ,  Takuya SEKI ,  Hiroyoshi KATO

IPC: C04B7/44 ,  C04B18/08 ,  C04B7/28 ,  B09B3/00

Abstract: A process for producing a modified fly ash comprising the steps of providing, as a raw material, the raw fly ash discharged from a pulverized coal combustion boiler; classifying the raw fly ash into a crude powder and a fine powder; removing the unburned carbon contained in the crude powder by heating the crude powder at a temperature in a range of 500 to 1000° C.; and mixing together the crude powder from which the unburned carbon has been removed and the fine powder to obtain a modified fly ash.

公开(公告)号：US20240060247A1

公开(公告)日：2024-02-22

申请号：US18235958

申请日：2023-08-21

Applicant: Tokuyama Corporation

Inventor： Tatsuo SHINMI ,  Hiroyoshi KATO ,  Yoshinobu TSUKUDA ,  Takaaki KURODA

IPC: E01C13/02 ,  C04B28/02 ,  C04B14/06 ,  C04B18/10 ,  C04B18/14 ,  E01C13/08

CPC classification number: E01C13/02 ,  C04B28/02 ,  C04B14/06 ,  C04B18/103 ,  C04B18/141 ,  E01C13/08

Abstract: A ground structure comprises a basis comprising arranged concrete blocks and an artificial turf fixed to the basis. The concrete blocks contain cement, sand, and an inorganic water retaining material, and have a water permeability of not less than 1.0×10−4 m/s and not more than 10.0×10−4 m/s and a water retention capacity of not less than 0.10 g/cm3 and not more than 0.40 g/cm3, both measured in accordance with JIS A 5371. The artificial turf comprises a base sheet made of synthetic resin having drain holes and a synthetic resin pile fixed to the base sheet.

公开(公告)号：US20220315486A1

公开(公告)日：2022-10-06

申请号：US17608787

申请日：2020-04-09

Applicant: Tokuyama Corporation

Inventor： Akiyoshi MORI ,  Takashi CHABAYASHI ,  Takuya SEKI ,  Hiroyoshi KATO

IPC: C04B11/30 ,  C04B7/32 ,  C04B7/52 ,  C04B24/12

Abstract: A clinker that has a total content of C3A and C4AF of 22 to 40 mass %, calculated according to Bogue's formulas, and an iron modulus of 0.8 to 1.3 is pulverized with gypsum. Alternatively, the clinker after pulverization is mixed with gypsum powder. A pulverization agent comprising N-methyl-di-ethanol-amine and/or di-ethanol-isopropanol-amine is used in the pulverization.