公开(公告)号：US12172928B2

公开(公告)日：2024-12-24

申请号：US16622095

申请日：2018-06-12

Applicant: GCP Applied Technologies Inc.

Inventor： Dany Vincent ,  Klaus-Alexander Rieder ,  Stephen P. Klaus ,  Damian Thomas

IPC: C04B28/06 ,  B28B1/30 ,  B28B7/38 ,  C04B14/06 ,  C04B14/28 ,  C04B14/30 ,  C04B24/24 ,  B28B11/04 ,  B28B19/00 ,  C04B103/54 ,  C04B111/00

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.

公开(公告)号：US20210188709A1

公开(公告)日：2021-06-24

申请号：US16622095

申请日：2018-06-12

Applicant: GCP Applied Technologies Inc.

Inventor： Dany Vincent ,  Klaus-Alexander Rieder ,  Stephen P. Klaus ,  Damian Thomas

IPC: C04B28/06 ,  C04B14/06 ,  C04B14/28 ,  C04B14/30 ,  C04B24/24

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.

公开(公告)号：US10577284B2

公开(公告)日：2020-03-03

申请号：US16019739

申请日：2018-06-27

Applicant: GCP Applied Technologies Inc.

Inventor： Ezgi Yurdakul ,  Damla Boyer ,  Klaus-Alexander Rieder ,  Yohannes K. Lemma

IPC: C04B28/28 ,  C04B28/24 ,  C04B24/42 ,  C04B40/00 ,  C04B40/02 ,  C04B28/02 ,  C04B103/24 ,  C04B111/00 ,  C04B103/40 ,  C04B103/00

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.

公开(公告)号：US11958774B2

公开(公告)日：2024-04-16

申请号：US17050099

申请日：2018-05-11

Applicant: GCP Applied Technologies Inc.

Inventor： Antonio J. Aldykiewicz, Jr. ,  Klaus-Alexander Rieder ,  Michael D. Morgan ,  Djassi-biko Rodrigues Pires

IPC: C04B18/02 ,  C04B40/00

CPC classification number: C04B18/021 ,  C04B40/0032

Abstract: Method and composition for producing aggregates from cement and concrete, including residual or returned concrete. Exemplary methods involve the use of an aggregate-forming inducer that provides a surface anchoring site for cement paste to bond/adhere, such as shredded news print, cardboard, or mixtures thereof, and also including fiber materials such as polymers, glass, and other material fibers. The aggregate-forming inducer is mixed with fresh concrete until aggregates are formed.

公开(公告)号：US20230032346A1

公开(公告)日：2023-02-02

申请号：US17778808

申请日：2020-11-20

Applicant: GCP Applied Technologies Inc.

Inventor： Elizabeth Burns ,  Hideo Koyata ,  Klaus-Alexander Rieder

IPC: C04B28/28

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.

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.

公开(公告)号：US20200308048A1

公开(公告)日：2020-10-01

申请号：US16755569

申请日：2017-10-13

Applicant: GCP Applied Technologies Inc.

Inventor： Zen Chun ,  Klaus-Alexander Rieder ,  Ezgi Yurdakul ,  Antonio J. Aldykiewicz

IPC: C04B2/06 ,  C04B20/10 ,  C04B28/04 ,  C04B28/10 ,  C04B22/00

Abstract: The present invention provides a liquid composition of quicklime particles within an alkylene glycol-based paste or slurry environment, which allows for pumpability and meterability of a liquid composition into cementitious materials such as concrete and mortar. Treated quicklime particles of the present invention manifest an unexpected and surprising hydration induction postponement behavior, as demonstrated through calorimetric testing.

公开(公告)号：US09624130B2

公开(公告)日：2017-04-18

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 ,  Klaus-Alexander Rieder ,  Pierre Estephane

IPC: C08F8/34 ,  C08K3/00 ,  C04B24/12 ,  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.