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    WATER REDUCING ADMIXTURE FOR STABLE AIR
    1.
    发明申请
    WATER REDUCING ADMIXTURE FOR STABLE AIR 审中-公开

    公开(公告)号：WO2021102294A1

    公开(公告)日：2021-05-27

    申请号：PCT/US2020/061559

    申请日：2020-11-20

    Applicant: GCP APPLIED TECHNOLOGIES INC.

    Inventor： BURNS, Elizabeth ,  KOYATA, Hideo ,  RIEDER, Klaus-Alexander

    IPC: C04B24/26 ,  C04B24/32 ,  C04B28/02 ,  C04B40/00

    Abstract: The present invention provides exemplary additive compositions and methods whereby hydratable cementitious compositions, such as concrete, can be modified using polycarboxylate type ether or ester cement dispersant polymers of a small size, in combination with at least one alkyl alkoxylate type surface active agent which typically hitherto is considered detergent-like in generating air bubbles (heads of foam) in aqueous environments. The present inventors discovered surprisingly that such agents could be used to control air content in plastic concrete mixes in combination with the polycarboxylate type ether or ester cement dispersant polymer.

    METHOD FOR MANUFACTURING CONCRETE ARTICLES AND STRUCTURES
    2.
    发明申请
    METHOD FOR MANUFACTURING CONCRETE ARTICLES AND STRUCTURES 审中-公开

    公开(公告)号：WO2018229074A1

    公开(公告)日：2018-12-20

    申请号：PCT/EP2018/065550

    申请日：2018-06-12

    Applicant: GCP APPLIED TECHNOLOGIES INC. ,  DUCKWORTH, Timothy John

    Inventor： VINCENT, Dany ,  RIEDER, Klaus-Alexander ,  KLAUS, Stephen P ,  THOMAS, Damian

    IPC: C04B28/04

    Abstract: A method for manufacturing a concrete article is disclosed. The method comprises coating a mould or formwork with a release agent; spraying a mortar onto the mould or formwork, thereby forming a layer of mortar; casting concrete into the mould or formwork and onto the layer of mortar; and allowing the concrete to hydrate and harden in the mould or formwork, whereby a concrete article having a mortar skin layer is provided. The invention also provides concrete articles made by the described methods, and concrete structures which comprise the concrete articles. Concrete articles having the mortar skins can be made to have a relatively uniform outward appearance, even if the concrete cast behind the mortar skins may be different, in composition or appearance. Pigments or colorants and other expensive admixtures can be used in the mortar skin composition to greater visual effect, since the use of the mortar skin is less in overall volume compared to the concrete articles as a whole.

    EARLY STRENGTH ENHANCING CONCRETE ADMIXURE
    3.
    发明申请
    EARLY STRENGTH ENHANCING CONCRETE ADMIXURE 审中-公开

    公开(公告)号：WO2019005900A1

    公开(公告)日：2019-01-03

    申请号：PCT/US2018/039657

    申请日：2018-06-27

    Applicant: GCP APPLIED TECHNOLOGIES INC.

    Inventor： YORDAKUL, Ezgi ,  BOYER, Damla ,  RIEDER, Klaus-Alexander ,  LEMMA, Yohannes, K.

    IPC: B28B7/46 ,  C04B28/02 ,  C04B40/02

    Abstract: The present invention provides an admixture composition comprising a liquid suspension of colloidal silica, siloxane, and polycarboxylate polymer cement dispersant for enhancing early age strength, finishability, and other properties in hydratable cementitious compositions such as concrete (e.g., shotcrete). An inventive method involves mixing the components together in a specific sequence, thereby to obtain a stable liquid suspension. This attainment of a stable liquid suspension is surprising and unexpected because (i) the polycarboxylate polymer cement dispersant and siloxane components are incompatible and immiscible with one another; and (ii) that colloidal silica and siloxane compound are incompatible and immiscible with one another. Yet, the present inventors achieved an additive in the form of a stable liquid suspension which can be conveniently dosed into concretes and shotcrete mixtures, to enhance early age strength, and to improve workability and rheology in terms of finishability of concrete surfaces and improved rebound performance in shotcrete applications.

    CONTROLLABLE HIGH FLOW CONCRETE
    4.
    发明申请
    CONTROLLABLE HIGH FLOW CONCRETE 审中-公开
    可控高流动混凝土

    公开(公告)号：WO2018071529A1

    公开(公告)日：2018-04-19

    申请号：PCT/US2017/056122

    申请日：2017-10-11

    Applicant: GCP APPLIED TECHNOLOGIES INC.

    Inventor： BURNS, Elizabeth ,  TREGGER, Nathan A. ,  KOYATA, Kideo ,  KUO, Lawrence L. ,  RIEDER, Klaus-Alexander ,  ROBERTS, Mark, F. ,  MYERS, David

    IPC: C04B16/04 ,  C04B20/10 ,  C04B24/00 ,  C04B28/02 ,  C04B28/04 ,  C04B103/00

    Abstract: The present invention relates to very high workable yet controllable concrete mix design, admixture composition, and process for placing concrete. The mix design relates to particular aggregate/cement ratios and types which are characteristic of ready mix concrete (RMC), which provide high fluidity reminiscent of self-consolidating concrete (SCC), and which provides advantages over both RMC and SCC in terms of ease and speed in placement and finishability at the construction site placement zone, regardless of whether into a horizontal formwork (e.g., for slabs, floors) or into vertical formwork (e.g., for blocks, walls, columns, etc.), without loss of control and without generating high risks of segregation even when small amounts of water are added at the size to facilitate finishing of the concrete surface. An inventive admixture combination which enables this unique design involves two different polycarboxylate comb polymers in combination with two specific viscosity modifying agents, and this combination provides highly workable concrete to be placed in a controlled, efficient manner.

    Abstract translation: 本发明涉及非常高的可加工但可控的混凝土拌合物设计，外加剂组合物以及用于放置混凝土的方法。 混合料设计涉及特定的骨料/水泥比率和类型，它们是预拌混凝土（RMC）的特征，其提供高流动性使人联想到自密实混凝土（SCC），并且在轻松方面比RMC和SCC具有优势 并且无论是在水平模板（例如，用于板坯，地板）还是垂直模板（例如用于砌块，墙壁，立柱等）中，而不失去控制，在施工现场布置区域的布置和完成速度 即使加入少量的水以促进混凝土表面的整理，也不会产生高偏析风险。 能够实现这种独特设计的本发明混合物组合涉及两种不同的聚羧酸酯梳形聚合物与两种特定的粘度调节剂的组合，并且这种组合提供了高度可操作的混凝土，从而以受控，有效的方式放置。

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