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    • 10. 发明授权
    • Expansive cement
    • 膨胀水泥
    • US4419136A
    • 1983-12-06
    • US347560
    • 1982-02-10
    • Edward K. Rice
    • Edward K. Rice
    • C04B7/32C04B7/35
    • C04B7/323
    • An improved expansive cement and method of forming same. An expansive clinker containing a stable calcium alumino sulfate compound is separately ground to a selected surface area greater than about 4600 sq. cm/gm. The ground expansive clinker is then blended with a ground cement clinker and with gypsum to form the expansive cement. The expansive cement formed in accordance with the present invention requires less of the expansive clinker than expansive cements known in the art to achieve the same magnitude of expansion.
    • 一种改进的膨胀水泥及其形成方法。 含有稳定的钙铝硫酸盐化合物的膨胀熟料分别研磨成大于约4600平方厘米/克的选定表面积。 然后将地面膨化熟料与地面水泥熟料和石膏混合以形成膨胀水泥。 根据本发明形成的膨胀水泥比本领域已知的膨胀水泥要求更少的膨胀熟料以实现相同的膨胀量。