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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
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。
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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.
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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
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.
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