Invention Grant
- Patent Title: Prevention of slump loss in fresh concrete
- Patent Title (中): 防止新拌混凝土中的坍落度损失
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Application No.: US181612Application Date: 1980-08-26
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Publication No.: US4308069APublication Date: 1981-12-29
- Inventor: Akitoshi Tsuji , Yoshihiro Fukushima
- Applicant: Akitoshi Tsuji , Yoshihiro Fukushima
- Applicant Address: JPX Tokyo
- Assignee: Kao Soap Company, Limited
- Current Assignee: Kao Soap Company, Limited
- Current Assignee Address: JPX Tokyo
- Priority: JPX54-111173 19790831
- Main IPC: C04B24/22
- IPC: C04B24/22 ; C04B7/35
Abstract:
Slump loss in fresh concrete is prevented by adding a powdery or granular barium, magnesium, iron or aluminum salt of a .beta.-naphthalenesulfonic acid-formaldehyde condensate to the cement or concrete composition. About 0.01 to 10 parts by weight of the condensate per 100 parts by weight of cement, preferably Portland cement, are employed.
Public/Granted literature
- US6111093A CD19 coding sequences Public/Granted day:2000-08-29
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