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    Method for monitoring thixotropy in concrete mixing drum
    1.
    发明授权
    Method for monitoring thixotropy in concrete mixing drum 有权
    监测混凝土搅拌筒触变性的方法

    公开(公告)号：US08764272B2

    公开(公告)日：2014-07-01

    申请号：US12933947

    申请日：2008-04-07

    申请人： Kati Hazrati ,  Ara A. Jeknavorian ,  Eric Koehler

    发明人： Kati Hazrati ,  Ara A. Jeknavorian ,  Eric Koehler

    IPC分类号： G05B21/00 ,  B28C7/02 ,  G01N33/38 ,  C04B40/00 ,  C04B111/00 ,  G01N11/00

    CPC分类号： B28C7/026 ,  C04B40/0028 ,  C04B2111/00103 ,  C04B2111/0012 ,  G01N33/383 ,  G01N2011/0046

    摘要： The invention provides ‘thixotropy’ monitoring, by measuring the reversible, time-dependent reduction in viscosity occurring when concrete is subjected to mixing, and employs a mixing drum and conventional slump monitoring equipment as used on ready-mix trucks. In one embodiment, the drum is rotated until concrete is completely mixed; the speed is altered, such as by increasing it to a predetermined level; and the energy required to rotate the drum (ER) is monitored; the maximum (ER-MAX) and minimum (ER-MIN) values are recorded in computer memory; and these values are compared to pre-determined (target) values. Rheology factors (including viscosity, yield stress, and/or thixotropy) can be adjusted accordingly by adding liquid component(s) into the mix. This method, suitable for delivery of highly fluid concrete speed such as SCC, can involve transit and placement rheology targets during monitoring.

    摘要翻译： 本发明通过测量当混凝土混合时发生的粘度的可逆的时间依赖性降低，并采用混合罐和常规坍落度监测设备（如混合动力车上使用）来提供“触变性”监测。 在一个实施例中，滚筒旋转直到混凝土完全混合; 速度被改变，例如通过将其增加到预定水平; 并监测旋转鼓（ER）所需的能量; 最大（ER-MAX）和最小（ER-MIN）值被记录在计算机存储器中; 并将这些值与预定（目标）值进行比较。 流变因子（包括粘度，屈服应力和/或触变性）可以通过向混合物中加入液体组分来进行调节。 适用于输送高流体混凝土速度（如SCC）的方法可以在监测过程中涉及运输和放置流变目标。

    Method For Monitoring Thixotropy In Concrete Mixing Drum
    2.
    发明申请
    Method For Monitoring Thixotropy In Concrete Mixing Drum 有权
    混凝土搅拌桶中触变性监测方法

    公开(公告)号：US20110029134A1

    公开(公告)日：2011-02-03

    申请号：US12933947

    申请日：2008-04-07

    申请人： Kati Hazrati ,  Ara A. Jeknavorian ,  Eric Koehler

    发明人： Kati Hazrati ,  Ara A. Jeknavorian ,  Eric Koehler

    IPC分类号： G05B21/00

    CPC分类号： B28C7/026 ,  C04B40/0028 ,  C04B2111/00103 ,  C04B2111/0012 ,  G01N33/383 ,  G01N2011/0046

    摘要： The invention provides ‘thixotropy’ monitoring, by measuring the reversible, time-dependent reduction in viscosity occurring when concrete is subjected to mixing, and employs a mixing drum and conventional slump monitoring equipment as used on ready-mix trucks. In one embodiment, the drum is rotated until concrete is completely mixed; the speed is altered, such as by increasing it to a predetermined level; and the energy required to rotate the drum (ER) is monitored; the maximum (ER-MAX) and minimum (ER-MIN) values are recorded in computer memory; and these values are compared to pre-determined (target) values. Rheology factors (including viscosity, yield stress, and/or thixotropy) can be adjusted accordingly by adding liquid component(s) into the mix. This method, suitable for delivery of highly fluid concrete speed such as SCC, can involve transit and placement rheology targets during monitoring.

    摘要翻译： 本发明通过测量当混凝土混合时发生的粘度的可逆的时间依赖性降低，并采用混合罐和常规坍落度监测设备（如混合动力车上使用）来提供“触变性”监测。 在一个实施例中，滚筒旋转直到混凝土完全混合; 速度被改变，例如通过将其增加到预定水平; 并监测旋转鼓（ER）所需的能量; 最大（ER-MAX）和最小（ER-MIN）值被记录在计算机存储器中; 并将这些值与预定（目标）值进行比较。 流变因子（包括粘度，屈服应力和/或触变性）可以通过向混合物中加入液体组分来进行调节。 适用于输送高流体混凝土速度（如SCC）的方法可以在监测过程中涉及运输和放置流变目标。

    Air management in cementitious mixtures having plasticizer and a clay-activity modifying agent
    3.
    发明授权
    Air management in cementitious mixtures having plasticizer and a clay-activity modifying agent 有权
    具有增塑剂和粘土活性改性剂的水泥混合物中的空气管理

    公开(公告)号：US07972436B2

    公开(公告)日：2011-07-05

    申请号：US10267631

    申请日：2002-07-08

    申请人： Chia-Chih Ou ,  Ara A. Jeknavorian ,  Christon L. Hill

    发明人： Chia-Chih Ou ,  Ara A. Jeknavorian ,  Christon L. Hill

    IPC分类号： C04B24/12 ,  C04B24/18

    CPC分类号： C04B40/0039 ,  C04B38/10 ,  C04B2111/34 ,  Y10S516/912 ,  Y10S516/915 ,  C04B2103/40 ,  C04B2103/406 ,  C04B24/12 ,  C04B24/16 ,  C04B24/32 ,  C04B2103/12 ,  C04B2103/22 ,  C04B2103/302 ,  C04B2103/304 ,  C04B2103/61 ,  C04B28/02 ,  C04B24/02 ,  C04B24/06 ,  C04B24/2647

    摘要： An exemplary surface active agent admixture composition of the invention comprises (1) a first surface active agent comprising a betaine, an alkyl or aryl or alkylaryl sulfonate, or mixture thereof; and (2) a second surface active agent comprising a nonionic oxyalkylene-containing polymer surfactant. The present invention therefore provides a system for ensuring the presence in a hydratable cementitious composition (when hardened) a sufficient air volume and sufficient air void fineness and consistency. Further exemplary admixture compositions may comprise one or more plasticizers and one or more clay activity-modifying agents. Cementitious compositions and methods for modifying cementitious compositions, which incorporate the above-mentioned surface active agent combination, are also described. The invention provides the ability to adjust and stabilize air void systems in hydratable cementitious compositions, while allowing conventional air entraining agent (AEA) dosage practices to be followed.

    摘要翻译： 本发明的示例性表面活性剂混合物组合物包含（1）包含甜菜碱，烷基或芳基或烷芳基磺酸盐或其混合物的第一表面活性剂; 和（2）包含非离子氧化烯基聚合物表面活性剂的第二表面活性剂。 因此，本发明提供一种用于确保在可水合水泥质组合物（当硬化时）存在足够的空气体积和足够的空气空隙细度和稠度的系统。 其它示例性的混合组合物可以包含一种或多种增塑剂和一种或多种粘土活性改性剂。 还描述了掺入上述表面活性剂组合的水泥组合物和改性水泥组合物的方法。 本发明提供了调节和稳定可水合水泥组合物中的空气空隙系统的能力，同时允许遵循常规的引气剂（AEA）剂量实践。

    Air management in cementitious mixtures having plasticizer and a clay-activity modifying agent
    8.
    发明授权
    Air management in cementitious mixtures having plasticizer and a clay-activity modifying agent 有权
    具有增塑剂和粘土活性改性剂的水泥混合物中的空气管理

    公开(公告)号：US06441054B1

    公开(公告)日：2002-08-27

    申请号：US09517443

    申请日：2000-03-02

    申请人： Chia-Chih Ou ,  Ara A. Jeknavorian ,  Christon L. Hill

    发明人： Chia-Chih Ou ,  Ara A. Jeknavorian ,  Christon L. Hill

    IPC分类号： B01F304

    CPC分类号： C04B40/0039 ,  C04B38/10 ,  C04B2111/34 ,  Y10S516/912 ,  Y10S516/915 ,  C04B2103/40 ,  C04B2103/406 ,  C04B24/12 ,  C04B24/16 ,  C04B24/32 ,  C04B2103/12 ,  C04B2103/22 ,  C04B2103/302 ,  C04B2103/304 ,  C04B2103/61 ,  C04B28/02 ,  C04B24/02 ,  C04B24/06 ,  C04B24/2647

    摘要： An exemplary surface active agent admixture composition of the invention comprises (1) a first surface active agent comprising a betaine, an alkyl or aryl or alkylaryl sulfonate, or mixture thereof; and (2) a second surface active agent comprising a nonionic oxyalkylene-containing polymer surfactant. The present invention therefore provides a system for ensuring the presence in a hydratable cementitious composition (when hardened) a sufficient air volume and sufficient air void fineness and consistency. Further exemplary admixture compositions may comprise one or more plasticizers and one or more clay activity-modifying agents. Cementitious compositions and methods for modifying cementitious compositions, which incorporate the above-mentioned surface active agent combination, are also described. The invention provides the ability to adjust and stabilize air void systems in hydratable cementitious compositions, while allowing conventional air entraining agent (AEA) dosage practices to be followed.

    摘要翻译： 本发明的示例性表面活性剂混合物组合物包含（1）包含甜菜碱，烷基或芳基或烷芳基磺酸盐或其混合物的第一表面活性剂; 和（2）包含非离子氧化烯基聚合物表面活性剂的第二表面活性剂。 因此，本发明提供一种用于确保在可水合水泥质组合物（当硬化时）存在足够的空气体积和足够的空气空隙细度和稠度的系统。 其它示例性的混合组合物可以包含一种或多种增塑剂和一种或多种粘土活性改性剂。 还描述了掺入上述表面活性剂组合的水泥组合物和改性水泥组合物的方法。 本发明提供了调节和稳定可水合水泥组合物中的空气空隙系统的能力，同时允许遵循常规的引气剂（AEA）剂量实践。

    Nitrogenous strength enhancers for portland cement
    10.
    发明授权
    Nitrogenous strength enhancers for portland cement 失效
    波特兰水泥的氮强度增强剂

    公开(公告)号：US5641352A

    公开(公告)日：1997-06-24

    申请号：US547838

    申请日：1995-10-25

    申请人： Ara A. Jeknavorian ,  Leslie Jardine

    发明人： Ara A. Jeknavorian ,  Leslie Jardine

    IPC分类号： C04B24/12 ,  C04B24/16 ,  C04B28/02 ,  C04B40/00

    CPC分类号： C04B40/0039 ,  C04B24/12 ,  C04B24/16

    摘要： An early strength-enhancing admixture and cement composition is disclosed. The admixtures incorporate strength-enhancing components selected from the group consisting ofa. a nitrogenous compound of the formula ##STR1## wherein R.sub.1 =R.sub.5 A;R.sub.2 =R.sub.5 A, R.sub.5 OH, --OR.sub.6, --R.sub.6, --H, or Z;R.sub.3 =R.sub.5 A, R.sub.5 OH, --OR.sub.6, --R.sub.6, --H, or Z;A=--COOH or --SO.sub.3 H (or salts thereof)Z= ##STR2## R.sub.4 =an alkylene linking group; R.sub.5 =C.sub.1 -C.sub.10 alkylene;R.sub.6 =C.sub.1 -C.sub.10 alkyl;and at least one of R.sub.2 or R.sub.3 is R.sub.5 A, andb. a nitrogenous compound of the formula ##STR3## wherein R.sub.7 =R.sub.5 OH;R.sub.8 =R.sub.5, --R.sub.5 OH;R.sub.9 =--H, R.sub.5 OH.

    摘要翻译： 公开了一种早期增强强度的混合物和水泥组合物。 该混合物包含选自以下的强化增强组分：a。 式（I）的含氮化合物，其中R1 = R5A; R2 = R5A，R5OH，-OR6，-R6，-H或Z; R3 = R5A，R5OH，-OR6，-R6，-H或Z; A = -COOH或-SO 3 H（或其盐）Z = R 4 =亚烷基连接基团; R5 = C1-C10亚烷基; R6 = C1-C10烷基; 并且R 2或R 3中的至少一个是R 5 A，和b。 式（II）的含氮化合物，其中R7 = R5OH; R8 = R5，-R5OH; R9 = -H，R5OH。