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    METHOD OF REDUCING STICKINESS OF CEMENTITIOUS COMPOSITIONS
    3.
    发明申请
    METHOD OF REDUCING STICKINESS OF CEMENTITIOUS COMPOSITIONS 审中-公开

    公开(公告)号：US20190135692A1

    公开(公告)日：2019-05-09

    申请号：US15790857

    申请日：2017-10-23

    Applicant: GCP Applied Technologies Inc.

    Inventor： Lawrence L. Kuo ,  Shuqiang Zhang ,  Hideo KOYATA

    IPC: C04B24/26 ,  C04B14/06 ,  C04B7/02

    Abstract: The present invention provides a method and admixture composition for making hydratable cementitious compositions, ones believed to have much less stickiness in comparison to prior methods. Decreased stickiness in concrete mixes means that they are easier to pour or to cast into place, as well as easier to finish. Dispersant carboxylate polymers of the invention having this ability are characterized by possessing two different, relatively short chain lengths of polyalkyleneoxide units and low weight-average molecular weights.

    Optimizing Polycarboxylate Admixtures for Cementitious Compositions
    5.
    发明申请
    Optimizing Polycarboxylate Admixtures for Cementitious Compositions 审中-公开
    优化用于水泥组合物的聚羧酸酯混合物

    公开(公告)号：US20160362337A1

    公开(公告)日：2016-12-15

    申请号：US15016877

    申请日：2016-02-05

    Applicant: GCP Applied Technologies Inc.

    Inventor： Lawrence L. Kuo ,  Keith St Jean ,  Yohannes K. Lemma ,  Nathan A. Tregger ,  Stephen P. Klaus ,  Danila F. Ferraz

    IPC: C04B24/26 ,  C04B24/06

    CPC classification number: C04B24/2647 ,  C04B24/06 ,  C04B24/2658 ,  C04B24/267 ,  C04B40/0039 ,  C04B14/10 ,  C04B28/02

    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.

    Abstract translation: 本发明提供了使用至少三种不同的不同的羧酸盐聚合物改性可水合的水泥质组合物如混凝土或砂浆的组合物和方法，即使当混凝土或砂浆中存在粘土时，否则会降低用作多元羧酸盐聚合物的剂量效率 分散剂。 称为聚合物I，聚合物II和聚合物II的三种聚羧酸酯聚合物衍生自单体组分A，B和C，其中组分A是不饱和羧酸，组分B是聚氧化烯，组分C是不饱和羧酸酯 酯。 A：B：C的组分摩尔比范围在聚合物I和II之间是不同的; 而针对聚合物III鉴定出不同的组分摩尔比A：B + C。 当用这三种不同的聚羧酸酯聚合物处理时，可水合的水泥组合物在初始可加工性和坍落度保留方面出人意料地增强，特别是如果存在粘土。

    Low-to-mid range water-reducing polymer with mixed polyoxyalkylene side chains
    8.
    发明授权
    Low-to-mid range water-reducing polymer with mixed polyoxyalkylene side chains 有权

    公开(公告)号：US10047008B2

    公开(公告)日：2018-08-14

    申请号：US15144958

    申请日：2016-05-03

    Applicant: GCP Applied Technologies Inc.

    Inventor： Lawrence L. Kuo

    IPC: C04B24/26

    Abstract: Methods for plasticizing cementitious mixtures having relatively high water/cement ratio (at least 0.40 or higher) are surprisingly improved in terms of dosage efficiency, compared to conventional “superplasticizer” polycarboxylate polymers, when the comb-type carboxylate copolymer is formed from two different polyether side chains having specifically selected monomer constituents.

    Controllable high flow concrete
    10.
    发明授权
    Controllable high flow concrete 有权

    公开(公告)号：US11352301B2

    公开(公告)日：2022-06-07

    申请号：US16341752

    申请日：2017-10-11

    Applicant: GCP Applied Technologies Inc.

    Inventor： Elizabeth Burns ,  Nathan A. Tregger ,  Hideo Koyata ,  Lawrence L. Kuo ,  Klaus-Alexander Rieder ,  Mark F. Roberts ,  David Myers

    IPC: C04B40/00 ,  C04B14/06 ,  C04B16/06 ,  C04B24/32 ,  C04B24/38 ,  C04B28/28 ,  C04B103/00 ,  C04B111/60

    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.

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