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11.发明申请公开(公告)号：US20220250279A1
公开(公告)日：2022-08-11
申请号：US17668967
申请日：2022-02-10
发明人： Denis Beaupre
摘要： A method for detecting segregation occurring in fresh concrete mixture being agitated in a drum generally includes: rotating said drum about its rotation axis at a low rotational speed for agitating said fresh concrete mixture during at least a rotation; said fresh concrete mixture segregating, said segregating including gravity pulling denser concrete ingredients downwards in said fresh concrete mixture; measuring a plurality of pressure values indicative of pressure exerted onto a rheological probe mounted inside said drum and moving through said fresh concrete mixture as said drum rotates; providing reference data indicative of a behaviour of said rheological probe in a fresh concrete mixture in said absence of said segregating; and detecting that said segregating has occurred, including comparing at least some of said measured pressure values to said reference data.
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公开(公告)号：US20220236248A1
公开(公告)日：2022-07-28
申请号：US17718843
申请日：2022-04-12
申请人： VERIFI LLC
摘要： Described are a method and system for minimizing errors in the manufacture or management of aggregate-containing construction materials such as concrete. Aggregates used for making concrete are stored or weighed in dry bulk bin type hoppers, and conveyed from these hoppers into mixer drums which batching or mix the concrete. The hoppers or conveyor belts may contain sensor probes for measuring moisture levels in the aggregate. These sensor probes require calibration from time to time, but time and expense are required for proper calibration, leading to habitually erroneous moisture level data used in the industry on a daily basis. The present inventors believe that the smallest inaccuracies in aggregate moisture level readings can have profound effects on the properties of the resultant concrete product. To confront this long suffered problem, the present inventors surprisingly discovered that the inaccuracy of these aggregate moisture sensors, as used for evaluating the aggregate as a dry bulk material, can be detected and even addressed through the use of slump monitoring systems to evaluate the concrete slurry mix prepared from the aggregates.
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公开(公告)号：US11225595B2
公开(公告)日：2022-01-18
申请号：US16479040
申请日：2017-02-22
IPC分类号： E21B33/13 , B28C7/02 , C09K8/467 , C04B7/02 , E21B47/07 , C04B7/43 , C09K8/46 , C09K8/42 , C04B111/00
摘要： Methods of wellbore cementing are provided. A method of designing a cement composition may include: selecting a target heat of hydration for a target time and temperature; selecting one or more cementitious components and a weight percent for each of the one or more cementitious components such that a sum of a heat of hydration of the one or more cementitious components is less than or equal to the target heat of hydration; preparing the cement composition; and allowing the cement composition to set.
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公开(公告)号：US20210394394A1
公开(公告)日：2021-12-23
申请号：US17462621
申请日：2021-08-31
申请人： Oshkosh Corporation
摘要： A drum control system includes a mixture sensor and a controller. The mixture sensor is configured to be positioned within a drum to engage with drum contents to facilitate acquiring drum contents data indicative of a property of the drum contents. The controller is configured to control a drive system to rotate the drum at a first, unmixed speed following receipt of the drum contents by the drum where the drum contents including ingredients of a concrete mixture; acquire the drum contents data from the mixture sensor and monitor the property of the drum contents as the drum rotates; and control the drive system to rotate the drum at a second, mixed speed in response to determining that the property of the drum contents indicates that the ingredients have been sufficiently mixed.
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公开(公告)号：US11130714B2
公开(公告)日：2021-09-28
申请号：US16400339
申请日：2019-05-01
申请人： VERIFI LLC
发明人： Nathan A. Tregger , Mark F. Roberts , Kati Hazrati
摘要： Disclosed are dosing methods for mitigating the deleterious effect of clays, which are born or conveyed by sand aggregates, crushed rock, gravel, and other aggregates used in the manufacture of concrete, upon the dosage efficiency of cement dispersants added into concrete. Instead of introducing the entire clay mitigation agent (CMA) into the aggregate material before or during batching in the cement batch plant in a singular, upfront dose, the present invention comprises administering CMA doses on at least two instances in a rotatable truck-mounted mixer drum, wherein at least 21%-100% of the total CMA added into the concrete is added after initial batching of water, cement binder, and clay-bearing aggregates in the rotatable truck-mounted mixer drum during the transit portion of the delivery between initial batching at the cement batch plant and the pour event at the job site.
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公开(公告)号：US20210291403A1
公开(公告)日：2021-09-23
申请号：US16336518
申请日：2017-09-25
申请人： VERIFI LLC
摘要： Described are a method and system for initiating a majority percentage of chemical admixture dosage into a delivered concrete load preferably just before arrival of the concrete delivery truck at the delivery pour site, such that a maximized slump (or slump flow, or other slump characteristic) increase occurs just before discharge/pour. The invention employs a concrete slump management system having a processor that is programed to consider time of pour (discharge) and stored data that includes dosage response (change of slump characteristic) of the concrete mix due to past additions in the same type of concrete mix, and thus maximizes pre-pour increase in slump characteristic while minimizing or avoiding the risk of overshooting the slump target as well as limiting the time required for adjusting concrete to attain the target slump value at the jobsite.
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公开(公告)号：US20210213642A1
公开(公告)日：2021-07-15
申请号：US17214263
申请日：2021-03-26
申请人： Oshkosh Corporation
摘要： A vehicle system includes a controller configured to acquire environment data, acquire GPS data including information regarding characteristics of a route between an initial location of a vehicle and a destination for the vehicle, receive an initial property of drum contents within a mixing drum of the vehicle, receive a target property for the drum contents, operate a drum drive system of the vehicle at a first drive speed determined based on the initial property, the target property, the environment data, and the GPS data, receive a signal from a mixture sensor indicative of a current property of the drum contents at a current location of the vehicle different than the initial location, and adjust the first drive speed of the drum drive system to a second drive speed where the second drive speed is determined based on the target property, the current property, updated environment data, and updated GPS data.
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公开(公告)号：US20210069932A1
公开(公告)日：2021-03-11
申请号：US16951724
申请日：2020-11-18
申请人： Caterpillar Inc.
发明人： Daniel Martinez , Daniel Peter Sergison , Zhijun Cai , Jean-Jacques Clar , Eric Alan Reiners , Benjamin John Hodel , Benjamin L. Naasz
摘要： An inference system for monitoring a cementitious mixture for three-dimensional printing is provided. The inference system includes an ambient condition sensor, a temperature sensor, a moisture sensor and an image capturing device. The inference system also includes a controller coupled to the ambient condition sensor, the temperature sensor, the moisture sensor, and the image capturing device. The controller receives sensed ambient conditions, a temperature signal, and a moisture content signal. The controller receives an image feed of a portion of a cementitious mixture. The controller also receives signals indicative of a motor speed and a motor torque associated with a mixing container. The controller builds a model and determines a material suitability of the cementitious mixture using the model based on the received ambient conditions, the temperature signal, the moisture content signal, the image feed, the motor speed, and the motor torque and determines one or more corrective actions.
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19.发明申请公开(公告)号：US20210001765A1
公开(公告)日：2021-01-07
申请号：US16916310
申请日：2020-06-30
发明人： Denis Beaupre , Jerome Chapdelaine
摘要： There is described a method for determining cleanliness of a drum of a fresh concrete mixer truck. The method generally has: rotating the drum about the rotation axis with a constant torque; using a rotational speed sensor, measuring a plurality of speed values corresponding to speeds at which the drum rotates at different moments in time during said rotating; and using a controller, receiving the plurality of speed values; accessing calibration data having different reference speed values-related data associated to corresponding reference degrees of cleanliness of the drum; comparing at least some of the speed values to the calibration data; and determining a degree of cleanliness of the drum based on said comparison.
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公开(公告)号：US20200225258A1
公开(公告)日：2020-07-16
申请号：US15771502
申请日：2016-10-27
发明人： Denis BEAUPRE
摘要： The application concerns a system for measuring the rotational speed of a drum rotatably mounted to a mixer truck, rotating relatively to the mixer truck and having a main axis inclined relative to the mixer truck, even in case that the drum is empty. A sensor is mounted to the empty drum and generates a sinusoidal signal as the drum rotates; the sensor could be a load sensor experiencing forces due to the changing influence of gravity during rotation, or a light intensity sensor responsive e.g. to variations of ambient light during rotation. The sensor signal is transmitted over a wireless connection to a receiver. The frequency of the sinusoidal signal is measured and output as the rotational speed of the rotating drum. The application also concerns the determination of a direction of rotation, based on a phase shift between two periodic signals. One signal could be the periodic intensity variation on a first wireless transmission path during a full rotation. The other could be a periodic intensity variation on a second wireless transmission path, or a periodic variation of a sensed value such as the output of a load sensor or light intensity sensor.
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