POZZOLAN FOR USE IN A CEMENT COMPOSITION HAVING A LOW HEAT OF HYDRATION
    2.
    发明申请
    POZZOLAN FOR USE IN A CEMENT COMPOSITION HAVING A LOW HEAT OF HYDRATION 有权
    POZZOLAN用于具有较低水化温度的水泥组合物中

    公开(公告)号:US20140332216A1

    公开(公告)日:2014-11-13

    申请号:US13889213

    申请日:2013-05-07

    Abstract: A method of cementing in a subterranean formation comprises: introducing a cement composition into a wellbore penetrating the subterranean formation, wherein at least a portion of the subterranean formation has a temperature less than or equal to the freezing point of an aqueous liquid, and wherein the cement composition comprises: (A) cement; (B) water; and (C) a pozzolan, wherein the cement composition has a heat of hydration of less than 50 BTU per pound; and causing or allowing the cement composition to set in the wellbore after the step of introducing. The pozzolan can have a calcium oxide concentration of less than 15% by weight of the pozzolan, and the pozzolan can have a concentration of at least 15% by weight of the cement. Gas hydrates can be present in or adjacent to a portion of the well.

    Abstract translation: 一种在地层中固井的方法包括:将水泥组合物引入穿透地层的井眼中,其中至少一部分地层的温度低于或等于含水液体的凝固点,并且其中 水泥成分包括:(A)水泥; (B)水; 和(C)火山灰,其中水泥组合物具有小于50BTU /磅的水合热; 并且在引入步骤之后引起或允许水泥组合物固定在井眼中。 火山灰的氧化钙浓度小于火山灰重量的15%,火山灰的浓度可以至少为水泥的15%。 气体水合物可以存在于井的一部分中或邻近井的一部分。

    Cement admixture, cement composition, and method for suppressing carbonation using the same
    3.
    发明授权
    Cement admixture, cement composition, and method for suppressing carbonation using the same 有权
    水泥外加剂,水泥组合物及使用其的碳酸化抑制方法

    公开(公告)号:US07527689B2

    公开(公告)日:2009-05-05

    申请号:US11923010

    申请日:2007-10-24

    Abstract: A cement admixture and a cement composition having a carbonation suppressing effect and a heat-of-hydration suppressing effect are provided. A cement admixture containing one or more non-hydraulic compounds selected from the group consisting of γ-2CaO.SiO2, α-CaO.SiO2 and calcium magnesium silicate, a cement composition containing said admixture, and a carbonation suppressing method by use of said cement admixture or cement composition. According to the present invention, a remarkable carbonation suppressing effect can be obtained particularly when used in portland blast-furnace slag cement. This leads to an effective use of steelmaking slag and the like, and the load of clinker can be reduced, so that a cement composition of a low environmental load type can be attained. Further, this is suitable for cements in conformity with the EN standards, which are used in civil engineering and building industries.

    Abstract translation: 提供了具有碳酸化抑制效果和水合热抑制效果的水泥混合物和水泥组合物。 一种含有一种或多种选自γ-2CaO.SiO2,α-CaO.SiO2和硅酸镁镁的非水力化合物的水泥混合物,含有所述混合物的水泥组合物和使用所述水泥的碳酸化抑制方法 外加剂或水泥组合物。 根据本发明,特别是当用于波特兰高炉矿渣水泥时,可以获得显着的碳酸化抑制效果。 这导致有效地利用炼钢炉渣等,并且可以减少熟料的负荷,从而可以获得低环境负荷型的水泥组合物。 此外,这适用于符合在土木工程和建筑行业使用的EN标准的水泥。

    Cement admixture, cement composition, and cement concrete made therefrom
    5.
    发明申请
    Cement admixture, cement composition, and cement concrete made therefrom 有权
    水泥外加剂,水泥组合物和由其制成的水泥混凝土

    公开(公告)号:US20040231568A1

    公开(公告)日:2004-11-25

    申请号:US10489316

    申请日:2004-03-18

    Abstract: A cement admixture of a low environmental load type, capable of reducing hexavalent chromium, having a small slump loss or heat of hydration, hardly neutralized and capable of suppressing autogenous shrinkage to a low level; a cement composition; and cement concrete employing it, are presented. The cement admixture comprises a slowly cooled slag powder which contains melilite as the main component and which has a carbon dioxide absorption of at least 2%, has a CO2 absorption of at least 2%, has a loss on ignition of at most 5%, contains at least 0.5% of sulfur present as non-sulfuric acid form sulfur and/or has a concentration of non-sulfuric acid form sulfur to elute, of at least 100 mg/l, and further, preferably, has a degree of vitrification of at most 30%, a melilite lattice constant a of from 7.73 to 7.82 and/or a Blaine specific surface area of at least 4,000 cm2/g.

    Abstract translation: 能够减少六价铬,具有小的坍落度损失或水合热的低环境负荷型水泥外加剂难以中和并能够将自发收缩抑制到较低水平; 水泥组合物; 和使用它的水泥混凝土。 水泥混合物包含缓慢冷却的炉渣粉末,其含有作为主要组分的胡椒石,二氧化碳吸收率至少为2%,二氧化碳吸收量至少为2%,燃烧失重至多5% 含有至少0.5%的以硫酸形式存在的硫和/或非硫酸形式的硫的洗脱至少为100mg / l,并​​且进一步优选具有至少为 至多30%,七重晶格常数a为7.73至7.82,和/或布莱因比表面积至少为4000cm 2 / g。

    Pozzolan for use in a cement composition having a low heat of hydration
    7.
    发明授权
    Pozzolan for use in a cement composition having a low heat of hydration 有权
    火山灰用于具有低水合热的水泥组合物

    公开(公告)号:US09487691B2

    公开(公告)日:2016-11-08

    申请号:US13889213

    申请日:2013-05-07

    Abstract: A method of cementing in a subterranean formation comprises: introducing a cement composition into a wellbore penetrating the subterranean formation, wherein at least a portion of the subterranean formation has a temperature less than or equal to the freezing point of an aqueous liquid, and wherein the cement composition comprises: (A) cement; (B) water; and (C) a pozzolan, wherein the cement composition has a heat of hydration of less than 50 BTU per pound; and causing or allowing the cement composition to set in the wellbore after the step of introducing. The pozzolan can have a calcium oxide concentration of less than 15% by weight of the pozzolan, and the pozzolan can have a concentration of at least 15% by weight of the cement. Gas hydrates can be present in or adjacent to a portion of the well.

    Abstract translation: 一种在地层中固井的方法包括:将水泥组合物引入穿透地层的井眼中,其中至少一部分地层的温度低于或等于含水液体的凝固点,并且其中 水泥成分包括:(A)水泥; (B)水; 和(C)火山灰,其中水泥组合物具有小于50BTU /磅的水合热; 并且在引入步骤之后引起或允许水泥组合物固定在井眼中。 火山灰的氧化钙浓度小于火山灰重量的15%,火山灰的浓度可以至少为水泥的15%。 气体水合物可以存在于井的一部分中或邻近井的一部分。

    CEMENT ADMIXTURE, CEMENT COMPOSITION, AND METHOD FOR SUPPRESSING CARBONATION USING THE SAME
    8.
    发明申请
    CEMENT ADMIXTURE, CEMENT COMPOSITION, AND METHOD FOR SUPPRESSING CARBONATION USING THE SAME 有权
    水泥组合物,水泥组合物和使用该组合物抑制碳化的方法

    公开(公告)号:US20080282936A1

    公开(公告)日:2008-11-20

    申请号:US11923010

    申请日:2007-10-24

    Abstract: A cement admixture and a cement composition having a carbonation suppressing effect and a heat-of-hydration suppressing effect are provided. A cement admixture containing one or more non-hydraulic compounds selected from the group consisting of γ-2CaO.SiO2, α-CaO.SiO2 and calcium magnesium silicate, a cement composition containing said admixture, and a carbonation suppressing method by use of said cement admixture or cement composition. According to the present invention, a remarkable carbonation suppressing effect can be obtained particularly when used in portland blast-furnace slag cement. This leads to an effective use of steelmaking slag and the like, and the load of clinker can be reduced, so that a cement composition of a low environmental load type can be attained. Further, this is suitable for cements in conformity with the EN standards, which are used in civil engineering and building industries.

    Abstract translation: 提供了具有碳酸化抑制效果和水合热抑制效果的水泥混合物和水泥组合物。 含有一种或多种非水力化合物的水泥混合物,其选自γ-2CaO,SiO 2,α-CaO,SiO 2和硅酸钙镁, 含有所述混合物的水泥组合物和使用所述水泥掺合剂或水泥组合物的碳酸化抑制方法。 根据本发明,特别是当用于波特兰高炉矿渣水泥时,可以获得显着的碳酸化抑制效果。 这导致有效地利用炼钢炉渣等,并且可以减少熟料的负荷,从而可以获得低环境负荷型的水泥组合物。 此外,这适用于符合在土木工程和建筑行业使用的EN标准的水泥。

    Cement admixture, cement composition, and method for suppressing carbonation using the same
    9.
    发明申请
    Cement admixture, cement composition, and method for suppressing carbonation using the same 审中-公开
    水泥外加剂,水泥组合物及使用其的碳酸化抑制方法

    公开(公告)号:US20040216644A1

    公开(公告)日:2004-11-04

    申请号:US10486827

    申请日:2004-02-20

    Abstract: A cement admixture and a cement composition having a carbonation suppressing effect and a heat-of-hydration suppressing effect are provided. A cement admixture containing one or more non-hydraulic compounds selected from the group consisting of null-2CaO.SiO2, null-CaO.SiO2 and calcium magnesium silicate, a cement composition containing said admixture, and a carbonation suppressing method by use of said cement admixture or cement composition. According to the present invention, a remarkable carbonation suppressing effect can be obtained particularly when used in portland blast-furnace slag cement. This leads to an effective use of steelmaking slag and the like, and the load of clinker can be reduced, so that a cement composition of a low environmental load type can be attained. Further, this is suitable for cements in conformity with the EN standards, which are used in civil engineering and building industries.

    Abstract translation: 提供了具有碳酸化抑制效果和水合热抑制效果的水泥混合物和水泥组合物。 一种含有一种或多种选自γ-2CaO.SiO2,α-CaO.SiO2和硅酸镁镁的非水力化合物的水泥混合物,含有所述混合物的水泥组合物和使用所述水泥的碳酸化抑制方法 外加剂或水泥组合物。 根据本发明,特别是当用于波特兰高炉矿渣水泥时,可以获得显着的碳酸化抑制效果。 这导致有效地利用炼钢炉渣等,并且可以减少熟料的负荷,从而可以获得低环境负荷型的水泥组合物。 此外,这适用于符合在土木工程和建筑行业使用的EN标准的水泥。

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