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    EARLY STRENGTH SLAG-BASED CEMENTITIOUS BINDER
    1.
    发明申请
    EARLY STRENGTH SLAG-BASED CEMENTITIOUS BINDER 审中-公开

    公开(公告)号：WO2022072779A1

    公开(公告)日：2022-04-07

    申请号：PCT/US2021/053092

    申请日：2021-10-01

    Applicant: GCP APPLIED TECHNOLOGIES INC.

    Inventor： ESTEPHANE, Pierre ,  BURNS, Elizabeth

    IPC: C04B7/153 ,  C04B7/17 ,  C04B28/08 ,  C04B40/00

    Abstract: The present invention provides exemplary method and additive for making cementitious binders that comprise primarily ground granulated blast furnace slag (GGBFS) having excellent strength at 24 hours, with preferably little or minimal amounts of Ordinary Portland Cement (OPC). As OPC manufacture involves carbon dioxide release into the atmosphere, the use of a GGBFS-based binder composition will help to enhance sustainability practices in the construction industry and minimizing strength losses implied by deletion of OPC. Strength in the GGBFS binder composition is enhanced by an alkaline-earth activator in combination with a strength enhancing component comprising dispersant and secondary activator.

    OPTIMIZING POLYCARBOXYLATE ADMIXTURES FOR CEMENTITIOUS COMPOSITIONS
    3.
    发明公开
    OPTIMIZING POLYCARBOXYLATE ADMIXTURES FOR CEMENTITIOUS COMPOSITIONS 有权
    优化水泥组合物的聚羧酸盐添加剂

    公开(公告)号：EP3307689A1

    公开(公告)日：2018-04-18

    申请号：EP16812203.4

    申请日：2016-06-13

    Applicant: GCP Applied Technologies Inc.

    Inventor： KUO, Lawrence, L. ,  ST JEAN, Keith ,  LEMMA, Yohannes, K. ,  TREGGER, Nathan, A. ,  KLAUS, Stephen, P. ,  FERRAZ, Danila, F. ,  RIEDER, Klaus.Alexander ,  ESTEPHANE, Pierre

    IPC: C04B26/06 ,  C04B24/26 ,  C08F265/04

    Abstract: The present invention provides a composition and method for modifying a hydratable cementitious composition such as concrete or mortar using at least three different, distinct carboxylate polymers, even when clay is present in the concrete or mortar that would otherwise diminish dosage efficiency of polycarboxylate polymer used as dispersant. The three polycarboxylate polymers, designated as Polymer I, Polymer II, and Polymer II, are derived from monomer Components A, B, and C wherein Component A is an unsaturated carboxylic acid, Component B is a polyoxyalkylene, and Component C is an unsaturated carboxylate ester. The component molar ratio ranges for A:B:C are different as between Polymers I and II; while a distinct component molar ratio A:B+C is identified for Polymer III. When treated with these three different polycarboxylate polymers, the hydratable cementitious composition is surprisingly enhanced in terms of initial workability and slump retention, especially if clay is present.

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