发明授权
- 专利标题： Workable cementitious compositions
- 专利标题（中）： 可加工水泥组合物
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申请号： US95125申请日： 1993-07-20
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公开(公告)号： US5494516A公开(公告)日： 1996-02-27
- 发明人: Josef F. Drs , Tom Melbye , Odd M. Tjugum , Salvatore Valenti
- 申请人： Josef F. Drs , Tom Melbye , Odd M. Tjugum , Salvatore Valenti
- 申请人地址： CHX Basel
- 专利权人： Sandoz Ltd.
- 当前专利权人： Sandoz Ltd.
- 当前专利权人地址： CHX Basel
- 优先权： GBX9215600 19920722; GBX9226411 19921218
- 主分类号： C04B24/18
- IPC分类号： C04B24/18 ; B28C7/00 ; C04B24/22 ; C04B24/26 ; C04B24/30 ; C04B24/32 ; C04B28/02 ; C04B24/00
摘要：
A process for modifying the slump of a concrete or mortar by the addition at different times of a water-soluble poly(alkylene oxide) and a .beta.-naphthalene sulphonate-formaldehyde condensate, a plasticizer or superplasticizer which is selected from lignosulphonates, melamine sulphonate formaldehyde condensates, carboxylates and selected styrene-maleic anhydride copolymers. The poly(alkylene oxide) is preferably partially replaced by a (hydroxy)alkyl cellulose. The process is advantageously used in shotcreting.
公开/授权文献
- US4796636A Noninvasive reflectance oximeter 公开/授权日：1989-01-10
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