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    Class C fly ash-based cementitious materials, flowable fill, concrete, and related techniques
    4.
    发明授权
    Class C fly ash-based cementitious materials, flowable fill, concrete, and related techniques 有权

    公开(公告)号：US11919810B2

    公开(公告)日：2024-03-05

    申请号：US17480464

    申请日：2021-09-21

    申请人： VHSC, LTD.

    发明人： Clinton W. Pike, Sr.

    IPC分类号： C04B18/10 ,  C04B22/00 ,  C04B24/04 ,  C04B40/00 ,  C04B103/00 ,  C04B103/10

    CPC分类号： C04B18/106 ,  C04B22/0013 ,  C04B24/04 ,  C04B40/0042 ,  C04B2103/0067 ,  C04B2103/10 ,  C04B2201/52

    摘要： Class C fly ash-based cementitious materials, concretes, and related techniques are disclosed. In accordance with some embodiments, an activated class C fly ash-based cementitious material may be produced by intergrinding class C fly ash (e.g., classified to remove quartz and/or other contaminants and, thus, increase the reactive materials present), an activator, sodium citrate, borax, and a polycarboxylate material. The class C fly ash may have an amorphous glass content of about 60 wt % or more, a calcium oxide (CaO2) content of about 20 wt % or more, and a quartz content of about 10 wt % or less. The activator may be a chemical which reacts with class C fly ash to form strätlingite structures therein when introduced with water. In some cases, the cementitious material may be provided as an all-in-one powder blend. In some cases, techniques disclosed herein may be utilized in providing a fast-setting flowable fill material.