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    Tunnel waterproofing composition and system
    51.
    发明授权
    Tunnel waterproofing composition and system 有权

    公开(公告)号：US11242751B2

    公开(公告)日：2022-02-08

    申请号：US16732297

    申请日：2019-12-31

    Applicant: GCP Applied Technologies Inc.

    Inventor： David Cozzens ,  Xia Cao ,  Steven Horton ,  Rachel C. Weston ,  Abbas Kazmi

    IPC: E21D11/38 ,  E21D11/10 ,  C09D133/04

    Abstract: Disclosed are methods, compositions, and composition packages for spray-coating a membrane for waterproofing a concrete tunnel applications. After primer coating is applied onto a surface in the tunnel, the coating composition is sprayed to form a membrane, and then concrete is cast or sprayed against the membrane so that it can bond to the membrane. Coating compositions comprise two or more acrylate monomers, as well as initiator, accelerator, and optional additive. Preferably, the coating composition is established by using a two-part package, one part having initiator, the other part having accelerator, and each part containing the monomers and optional additives so that the two parts can be shipped to the application site and mixed in a 1:1 ratio during spraying. The waterproofing coating composition provides excellent bonding with concrete.

    GRINDING STABILIZING ADDITIVE FOR VERTICAL ROLLER MILLS
    53.
    发明申请
    GRINDING STABILIZING ADDITIVE FOR VERTICAL ROLLER MILLS 有权

    公开(公告)号：US20210122675A1

    公开(公告)日：2021-04-29

    申请号：US16959627

    申请日：2018-06-15

    Applicant: GCP Applied Technologies Inc.

    Inventor： Joshua Detellis ,  Jeffrey Thomas ,  Josephine H. Cheung ,  David F. Myers

    IPC: C04B7/52 ,  C04B24/12 ,  C04B28/02

    Abstract: Method for grinding a solid in a vertical roller mill (VRM) and a cement composition prepared by the disclosed methods. A method comprises grinding a solid comprising a cement clinker under a water spray in the presence of a grinding stabilizing additive, wherein the grinding stabilizing additive comprises: (i) an alkanol amino acid compound or a disodium or dipotassium salt thereof having the structural formula: (I), (ii) a glycol; or a mixture of (i) and (ii), wherein the water spray level is reduced by at least 5% compared to a control. Cement compositions prepared by the disclosed methods have the pre-hydration level (Wk) equal to or less than 1.5%. The values and preferred values of R1-3 are disclosed herein.

    Wet Press Concrete Slab and Admixtures For Their Manufacture
    55.
    发明申请
    Wet Press Concrete Slab and Admixtures For Their Manufacture 审中-公开

    公开(公告)号：US20200215719A1

    公开(公告)日：2020-07-09

    申请号：US16826289

    申请日：2020-03-22

    Applicant: GCP Applied Technologies Inc.

    Inventor： Klaus A. Rieder ,  David W. Hughes ,  Lukasz M. Marcinkowski

    IPC: B28B3/04 ,  B28B7/46 ,  B28B11/24 ,  C04B28/02 ,  C04B40/02 ,  B28B13/06 ,  C04B14/04 ,  C04B18/02 ,  C04B24/12 ,  C04B40/00

    Abstract: The present invention provides a wet press process and admixture components for making concrete slabs (flags), curb (kerb) units, panels, boards, and other flat shapes, whereby colloidal silica and at least one alkanolamine and optional rheology control components are employed to provide an ideal combination of pressing time, green strength, surface definition, stack-ability, final concrete strength, and permeability. Stack-ability can be expressed in terms of minimum deflection or non-eccentricity of the units while standing on thickness edges at distances apart less than width or standing height. A wet press process typically involves introducing a highly fluid concrete mix into a mold, applying hydraulic pressure to consolidate the concrete (e.g., 1000-3000 PSI) and to extract excess water, removing the pressed concrete while in a green state from the mold, and then standing the slab units immediately upon removal from the mold while in a green state, on an edge adjacent to but spaced apart from other edge-standing units. In further embodiments, rounded aggregates such as naturally occurring sand and/or gravel obtained from local sources can be incorporated into the concrete slabs without defeating (vertical) stack-ability in the green state.

    Facilitated detailing for pre-applied waterproofing membranes
    56.
    发明授权
    Facilitated detailing for pre-applied waterproofing membranes 有权

    公开(公告)号：US10655322B2

    公开(公告)日：2020-05-19

    申请号：US15763643

    申请日：2015-09-29

    Applicant: GCP Applied Technologies Inc.

    Inventor： Huhe Chen ,  Hongmei Ding ,  Lijun Xin ,  Robert A. Wiercinski

    IPC: E04B1/66 ,  B05D1/02 ,  B05D1/28 ,  B05D3/02 ,  B05D5/10

    Abstract: The invention provides a waterproofing membrane which does not require a removable release sheet but which nevertheless bonds to post-cast concrete and facilitates water-tight sealing at membrane-to-membrane overlaps. The waterproofing membrane comprises a carrier and pressure-sensitive adhesive (PSA) layers, an inorganic particle layer having particulate bodies which are partially embedded in the PSA and which have an average particle size less than the average thickness of the PSA layer, and an anti-submarining nano-silica-containing coating layer attached to un-embedded portions of the inorganic particles to prevent total embedding into the PSA when the membrane is rolled or unrolled, whereby water-tight seams are facilitated between overlapped portions of adjacently installed waterproofing membranes, and whereby the water-tight seam is achieved preferably using only detailing or waterproofing tape and without the additional use of a liquid primer, mastic, or other coating.

    Low-to-mid range water-reducing polymer with mixed polyoxyalkylene side chains
    59.
    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.

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