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公开(公告)号：US20230146623A1
公开(公告)日：2023-05-11
申请号：US17911744
申请日：2021-03-17
申请人： DOW TORAY CO., LTD.
发明人： Taro MINATO , Katsuhiko TANIGUCHI , Sakae USHIJIMA , Hideo MATSUZAKI , Masatomo MAKIGUCHI , Motoaki IMURA , Hideyuki MORI
CPC分类号： C04B24/42 , C04B28/04 , C04B20/0036 , C04B40/0032 , C04B2103/65
摘要： A precast concrete molded body is provided, which is a cured product of a concrete composition. The concrete composition comprises: a microcapsule; cement; and at least one type of aggregate. The microcapsule is provided with a core-shell structure having i) a core made of a water repellent organosilicon material selected from the group consisting of organosilanes, organosilane partial condensation products, and branched siloxane resins, and ii) a shell made of a silicon-based network polymer containing silica units. The concrete composition contains 0.01 to less than 0.5 parts by weight of microcapsules per 100 parts by weight of cement. Thereby, a precast concrete molded body can be provided, having high strength, as well as at least one of the following properties: air content stability, substance penetration prevention, and freeze-thaw resistance.
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公开(公告)号：US20230131818A1
公开(公告)日：2023-04-27
申请号：US17911740
申请日：2021-03-17
申请人： DOW TORAY CO., LTD.
摘要： A cement composition is provided. The cement composition comprises: a microcapsule and cement. The microcapsule is provided with a core-shell structure having i) a core containing a water-repellent organosilicon material selected from the group consisting of organosilanes, organosilane partial condensation products, and branched siloxane resins, and ii) a shell of a silicon-based network polymer containing a silica unit. The microcapsule is included at 0.01 to less than 0.5 parts by weight per 100 parts by weight of the cement. Thus, it is possible to provide a cement composition that can provide a cured product having high strength, as well as excellent air content stability, substance penetration prevention, drying shrinkage, and freeze-thaw resistance.
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