公开(公告)号：US4931314A

公开(公告)日：1990-06-05

申请号：US256941

申请日：1988-10-13

申请人： Makoto Takakura ,  Takahiro Hori ,  Yuriko Sakaguchi ,  Yuji Nakamura

发明人： Makoto Takakura ,  Takahiro Hori ,  Yuriko Sakaguchi ,  Yuji Nakamura

IPC分类号： C04B22/08 ,  C04B41/50 ,  C04B41/65

CPC分类号： C04B41/009 ,  C04B22/085 ,  C04B41/5076 ,  C04B41/65 ,  C04B2103/61 ,  C04B2111/72

摘要： The invention is a method for preventing a hardened cementitious material from deteriorating or for repairing a deteriorated cementitious material, and more particularly to such method for the hardened cementitious material comprising metal materials to be corroded by a salt content and cause alkali-aggregate. It is characterized by applying a cement paste, mortar or concrete added with 1-25 weight % lithium nitride relative to the cement content so as to cover the surface of hardened cementitious material.

公开(公告)号：US4521249A

公开(公告)日：1985-06-04

申请号：US567028

申请日：1983-12-30

申请人： Masamichi Obitsu ,  Takahiro Hori ,  Toyoji Koinuma ,  Yuriko Sakaguchi

发明人： Masamichi Obitsu ,  Takahiro Hori ,  Toyoji Koinuma ,  Yuriko Sakaguchi

IPC分类号： C04B28/24 ,  B05D7/00 ,  C04B24/22 ,  C04B40/00 ,  C04B41/50 ,  C04B41/65 ,  C04B41/68 ,  C09D1/04 ,  C04B31/00

CPC分类号： C04B41/009 ,  C04B41/5089 ,  C04B41/68

摘要： An agent and method for modifying a surface layer of hardened cement structures or substrates with use of the agent which comprises in a specified ratio of an alkali silicate solution and a sodium naphthalenesulfonate-formaldehyde condensate. Said agent has an excellent stability and a remarkable permeability into the cement structure to form a deeper strengthened surface layer thereon.

公开(公告)号：US4443496A

公开(公告)日：1984-04-17

申请号：US400820

申请日：1982-07-22

申请人： Masamichi Obitsu ,  Takahiro Hori ,  Toyoji Koinuma ,  Yuriko Sakaguchi

发明人： Masamichi Obitsu ,  Takahiro Hori ,  Toyoji Koinuma ,  Yuriko Sakaguchi

IPC分类号： C04B28/24 ,  B05D7/00 ,  C04B24/22 ,  C04B40/00 ,  C04B41/50 ,  C04B41/65 ,  C04B41/68 ,  C09D1/04 ,  C04B31/00 ,  B05C1/16 ,  B32B35/00

CPC分类号： C04B41/009 ,  C04B41/5089 ,  C04B41/68

摘要： An agent and method for modifying a surface layer of hardened cement structures or substrates with use of the agent which comprises in a specified ratio of an alkali silicate solution and a sodium naphthalenesulfonate-formaldehyde condensate. Said agent has an excellent stability and a remarkable permeability into the cement structure to form a deeper strengthened surface layer thereon.

摘要翻译： 一种用于使用包含碱硅酸盐溶液和萘磺酸钠 - 甲醛缩合物的规定比例的试剂改性硬化的水泥结构或基材的表面层的试剂和方法。 所述试剂具有优异的稳定性和对水泥结构的显着渗透性，以在其上形成更深的加强表面层。