Workable cementitious compositions
    1.
    发明授权
    Workable cementitious compositions 失效
    可加工水泥组合物

    公开(公告)号:US5494516A

    公开(公告)日:1996-02-27

    申请号:US95125

    申请日:1993-07-20

    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.

    摘要翻译: 通过在不同时间添加水溶性聚(环氧烷)和β-萘磺酸 - 甲醛缩合物,增塑剂或超增塑剂来改性混凝土或砂浆的坍落度的方法,其选自木素磺酸盐,三聚氰胺磺酸甲醛 缩合物,羧酸酯和选择的苯乙烯 - 马来酸酐共聚物。 聚(环氧烷)优选部分地被(羟基)烷基纤维素代替。 该方法有利地用于喷射。