EP4072809A1 - Procédé assisté par ordinateur et dispositif pour commander une centrale à béton - Google Patents

Procédé assisté par ordinateur et dispositif pour commander une centrale à béton

Info

Publication number
EP4072809A1
EP4072809A1 EP20835698.0A EP20835698A EP4072809A1 EP 4072809 A1 EP4072809 A1 EP 4072809A1 EP 20835698 A EP20835698 A EP 20835698A EP 4072809 A1 EP4072809 A1 EP 4072809A1
Authority
EP
European Patent Office
Prior art keywords
concrete
unit
mixing
recipe
mixer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP20835698.0A
Other languages
German (de)
English (en)
Inventor
Henning STAVES
Helmut BAECHLE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Peri SE
Original Assignee
Peri SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Peri SE filed Critical Peri SE
Publication of EP4072809A1 publication Critical patent/EP4072809A1/fr
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/02—Controlling the operation of the mixing
    • B28C7/022—Controlling the operation of the mixing by measuring the consistency or composition of the mixture, e.g. with supply of a missing component
    • B28C7/024—Controlling the operation of the mixing by measuring the consistency or composition of the mixture, e.g. with supply of a missing component by measuring properties of the mixture, e.g. moisture, electrical resistivity, density
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/02—Controlling the operation of the mixing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
    • B28C5/18—Mixing in containers to which motion is imparted to effect the mixing
    • B28C5/20—Mixing in containers to which motion is imparted to effect the mixing rotating about a horizontal or substantially horizontal axis during mixing, e.g. without independent stirrers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/04—Supplying or proportioning the ingredients
    • B28C7/0404—Proportioning
    • B28C7/0409—Proportioning taking regard of the moisture content of the solid ingredients; Moisture indicators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/04—Supplying or proportioning the ingredients
    • B28C7/0404—Proportioning
    • B28C7/0418—Proportioning control systems therefor
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/0028—Aspects relating to the mixing step of the mortar preparation
    • C04B40/0032—Controlling the process of mixing, e.g. adding ingredients in a quantity depending on a measured or desired value
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Definitions

  • the present invention relates to a computer-aided method for controlling a concrete mixing plant for the production of ready-mixed concrete or mixed concrete, which is mixed at least from the components cement and aggregates with the addition of water in a motor-driven mixer unit.
  • the invention also relates to a data processing device executing the control method and a computer program embodying the method.
  • the invention comprises a special data format generated by the device for a documentation data record of the concrete quality produced and delivered by a concrete mixing plant.
  • the field of application of the invention extends both to concrete mixing plants and to the transport logistics between a concrete mixing plant for the production of ready-mixed concrete and the construction site on which the ready-mixed concrete is delivered and installed.
  • a concrete mixing plant usually consists essentially of several silos and outdoor storage areas on which the components to be mixed are stored. Powdered cement is stored in silos, protected from moisture, and the aggregates, preferably gravel and sand, are stored outdoors in the form of bulk material heaps. From here, depending on the type of concrete mixing plant, the aggregates can also be conveyed into silos, for example using a conveyor belt system. Different grain groups of aggregates are stored separately in assigned silos. The components get from the silos into the mixer unit according to a concrete recipe to be produced with the appropriate addition of water.
  • the mixer unit can be designed, for example, as a drum mixer, free-fall mixer, ring trough mixer, plate mixer, plate mixer or the like. After a mixing time, which is usually dictated by the recipe, the ready-mixed concrete is filled into truck mixers, which are supposed to transport it to the construction site as punctually as possible.
  • So-called concrete additives are also used as additional components for the production of ready-mixed concrete, which must be stored separately from the aforementioned components.
  • concrete additives for example fly ash, limestone powder or the like.
  • the above-mentioned components are usually metered by an operator in the control room of the concrete mixing plant and is carried out in a semi-automated manner in accordance with written mixing instructions, i.e. the concrete recipe.
  • written mixing instructions i.e. the concrete recipe.
  • strict rules apply to the metering of the components.
  • the components cement, aggregates, water and additives must be dosed with a tolerance of ⁇ 3% of the required amount in order to achieve the desired concrete quality.
  • the dosing process is computer-assisted according to instructions and when controlling the mixing time, care must be taken that changes in the properties of the components, such as the moisture of the aggregates, trigger a corresponding adjustment of the added quantities.
  • the mixing of the components must be carried out by the motor-driven mixer unit until the mixture appears uniform. This period is the mixing time ⁇ M, which is usually determined on the basis of empirical values and is at least 30 seconds for normal concrete and at least 90 seconds for lightweight concrete. Of course, the required mixing time ⁇ M also depends on the shape and movement of the mixer unit, for example on the speed of a drum mixer. These parameters differ depending on the concrete mixing plant and the mixer technology used there. Therefore, the aforementioned empirical values are not generally applicable.
  • concrete admixtures usually need to be added during the mixing process. If superplasticizer is added during the mixing process, the concrete must be mixed further until the superplasticizer has been completely distributed in the mixture. Depending on the system technology, concrete admixtures are added either together with the Water supply or immediately afterwards. Usually the effect depends on the time of addition.
  • Claim 16 relates to a concrete mixing plant for the production of ready-mixed concrete, which includes such a device.
  • Claim 18 relates to a computer program embodying the method according to the invention.
  • the invention includes the procedural teaching that the required mixing time ⁇ M of the mixer unit as a quality-determining factor for a ready-mixed concrete produced in a concrete mixing plant is calculated using an electronic forecast unit from the relevant influencing parameters before the start of the mixing process
  • a moisture sensor measured current moisture F at least of the added aggregates, but also the component temperature TK measured or determined via at least one temperature sensor or a thermal imaging camera, the mixer temperature TM and / or the outside temperature TA also taken into account in order to be based on a specified concrete recipe taking into account the Sensor technology determined various measured values to determine the required mixing time ⁇ M of the mixer unit as well as the expected concrete quality for each batch size.
  • a thermal imaging camera is used instead of a temperature sensor, it can be installed below or next to a mixer drum or the like, for example, to detect the mixer temperature TK.
  • a thermal imaging camera can be installed below or next to a mixer drum or the like, for example, to detect the mixer temperature TK.
  • existing concrete mixing plants can also be retrofitted with the technology according to the invention in terms of the required hardware with reasonable effort.
  • the solution according to the invention contains an optimal prediction of the mixing time ⁇ M of a concrete mixing plant as a quality-determining factor for a ready-mixed concrete to be produced by comparing measured values from various sensors, in particular a moisture sensor for determining the moisture content of the aggregates and at least one temperature sensor for determining process temperatures and / or sensors for other process parameters.
  • these essential measured variables have a decisive influence on the concrete quality that can be achieved, so that the concrete quality can be made uniform by setting the mixing time ⁇ M accordingly.
  • the mixing process can be shortened by increasing the amount of water added.
  • the prognosis of the required mixing time ⁇ M taking into account further correction characteristics for parameters relevant to the recipe.
  • the required mixing duration ⁇ M be transmitted from the forecasting unit directly to the control unit of the mixer unit for controlling the same.
  • the control unit can also vary the speed of rotation of a drum-shaped mixer unit in order to subsequently extend or shorten the predicted required mixing duration ⁇ M. If, for example, temperature measured values rise unusually strongly during the mixing process, the normal speed of the mixer unit can be increased in order to subsequently shorten the mixing time. This also shortens the heat exposure.
  • the control unit also adjusts the amount of water added to the measured moisture content of the aggregate.
  • temperature / mixing time correction characteristics for parameters relevant to the recipe.
  • speed / mixing time correction characteristics are used as correction characteristics for parameters relevant to the recipe.
  • These characteristics are used to vary the mixing time ⁇ M as a function of parameters such as the temperature or the speed of a drum-shaped mixer unit, which influence the quality of the concrete.
  • the electronic forecasting unit not only calculate the mixing time ⁇ M , but also forecast the transport time for the ready-mixed concrete from the concrete mixing plant to the construction site. Since the delivery location and the desired delivery time are also known from the order information for the ready-mixed concrete, the electronic forecasting unit can use a route planning unit to estimate the current travel time of a truck mixer due to the traffic. As a further influencing parameter, the electronic forecasting unit can also take into account the estimated transport temperature curve based on the outside temperature and optionally also an estimated waiting time until the ready-mixed concrete is installed on the construction site.
  • a waiting time can result, for example, from the fact that a formwork has not yet been completed on the construction site or the installation of earlier deliveries of ready-mixed concrete is delayed. Since the outside temperature also has a decisive influence on the quality of the concrete during transport, this is also taken into account.
  • the concrete quality can be predicted along the entire production chain, from the storage of the material, the start of the mixing process to the installation on the construction site, and if necessary influenced in order to achieve uniform quality. If, for example, a longer transport time is required due to congestion, the forecasting unit reacts by specifying concrete additives to extend the pot life of the ready-mixed concrete, which can be added within the framework of the given concrete recipe during the mixing process according to the control unit.
  • the forecast unit Since the forecast unit is able to determine the concrete quality that can be achieved under the given circumstances on the basis of the measured values determined by the sensors and other process-influencing parameters for the concrete recipe to be implemented, this can be communicated to the person responsible on the construction site before mixing and subsequent transport so that they can decide whether the concrete quality that can be achieved under the given circumstances should be used or not. In this way, incorrect deliveries can be avoided.
  • This process can advantageously be carried out by a computer-aided comparison unit connected to the forecast unit, which compares the forecast, realizable concrete quality with the specification required for the construction site. before the mixing unit is filled with the components to be mixed, the mixing process is started.
  • a documentation data record which comprises at least the following essential data fields assigned to an order identifier as a data record key: concrete recipe used,
  • This special data format thus includes the core information, which is decisive for the concrete quality of a delivery.
  • further data can of course also be added to the documentation data record.
  • such documentation data sets can be analyzed to determine the conditions under which optimal concrete quality could be achieved in order processes.
  • a pattern identifier can automatically suggest countermeasures to eliminate negative influences in the context of machine learning in order to ensure a higher probability of optimal concrete quality in the future.
  • Such a countermeasure can, for example, result in an increased addition of water slow speeds, a shortened mixing time at low temperatures or the like. All such countermeasures are not readily recognizable at all on the basis of the human understanding with the wealth of experience of a specialist.
  • the documentation data set can also be linked to other construction-related data using blockchain technology and stored in a forgery-proof documentation database for all those involved in a construction project.
  • FIG. 1 shows a schematic representation of a concrete mixing plant with a computer-aided control device implemented therein
  • FIG. 2 shows a schematic flow chart of a method for controlling the concrete mixing plant according to FIG. 1, and
  • FIG. 3 shows a data format of an order data record for the concrete mixing plant.
  • the mixer unit 3 is connected to cement silos 5a to 5c, which contain different types of cement 6a; 6b; 6c, which are blown into the mixer unit 3 in a valve-controlled manner via a compressed air delivery device.
  • the mixer unit 3 is in material flow connection with a dump area 7, on which dumps of bulk material with different aggregates 8a to 8c, that is different gravel and sands, are stored. These are transported to the mixer unit 3 by a conveyor belt device.
  • the mixer unit 3 can be connected to a connection for water 9.
  • an electronic forecast unit 10 is provided as part of the control of the concrete mixing plant.
  • the electronic forecasting unit 10 has a moisture sensor 11 for measuring the current moisture F of the aggregate 8a to be supplied; 8b; 8c in connection.
  • the temperature sensor 12 the component temperature T K of the aggregate to be fed 8a; 8b; 8c measured.
  • the process temperature within the mixer unit 3 is monitored via a further temperature sensor 13 and the outside temperature TA is also monitored via a temperature sensor 14.
  • the electronic forecasting unit 10 determines, based on a ready-mixed concrete order 16 stored in an order database 15 and to be processed, the associated concrete recipe 18 stored in a recipe database 17, for example for a special lightweight concrete.
  • the different types of measurement values determined by the sensor system described above are fed to the prognosis unit 10. Proceeding from this, the prognosis unit 10 determines at least the required mixing duration ⁇ M of the mixer unit 3 at a specific nominal speed. In addition, other control data can also be forecast.
  • the prognosis unit 10 When determining the control data, the prognosis unit 10 also takes into account correction characteristics 19, which are stored in a correction line database 20 and can be called up.
  • correction characteristics 19 are stored in a correction line database 20 and can be called up.
  • a temperature / mixing time correction characteristic curve can be used, for example in the case of the use of unusually dry and heated components, to extend the mixing time under M with increased addition of water. In the opposite case, the same applies analogously.
  • the required mixing duration ⁇ M predicted by the forecast unit 10 is then transmitted to the control unit 21 of the mixer unit 3 for controlling the motor 4 at a defined nominal speed.
  • the control unit 21 it is also possible for the control unit 21 to reduce or increase the speed of the electric motor 4 in order to vary the predicted required mixing duration t MZ u. For example, if a truck mixer 2 is not yet available for the removal of the ready-mixed concrete 1, the rotational speed of the mixer unit 3 can be reduced during the waiting time.
  • the electronic forecasting unit 10 also takes into account a transport time fr from the stationary concrete mixing plant to the construction site, which is forecast using a route planning unit 22 and which results from the route planning data. This can also be used to vary the required mixing time M accordingly.
  • concrete admixtures that extend the pot life can be added within the framework of the concrete formulation if it turns out that the delivery of the ready-mixed concrete 1 to the construction site would be extended due to traffic. This ensures that a concrete quality that is as uniform as possible is used.
  • a comparison unit 23 which is also connected to the forecast unit 10, compares the forecast, realizable concrete quality with the specification required for the construction site, which results from the order 16 for ready-mixed concrete. If this specification cannot be achieved, there is a possibility that the start of the filling and mixing process will be prevented, as it is foreseeable that the required concrete quality cannot be achieved in view of the extreme heating of components in the summer or a transport time delayed due to traffic jams.
  • This information generated by the comparison unit 23 can, for example, also be transmitted to the construction site for the purpose of changing the construction schedule.
  • the information generated by the sensor system, the prognosis unit 10, the control unit 21 and the comparison unit 23 on a mixing and delivery process for ready-mixed concrete 1 can be retrieved in a documentation database 24, which ensures later traceability.
  • the method for controlling a concrete mixing plant for the production of ready-mixed concrete 1 comprises at least the following steps:
  • a step A the concrete recipe to be produced is first loaded for the execution of a ready-mixed concrete order.
  • step B various current state measurement values of the required components are read in via the sensors of the concrete mixing plant.
  • step C at least the required mixing time is forecast.
  • step D this result is corrected by further logistical influencing parameters.
  • step E it is filled into a truck mixer for transport to the construction site.
  • a data format of an order data record 25 for a concrete mixing plant for the production of ready-mixed concrete comprises the following data fields assigned to an order identifier 26, which are also archived in the documentation database 24:
  • the concrete formulation 18 used is stored in a data field I, the measured temperature values T during the mixing and / or transport process are stored in a data field II, the measured moisture values F of at least one component of the concrete formulation used are stored in a data field III, and the actual quantities M of all components used according to the concrete recipe are stored, the predicted mixing time der M of the mixer unit is stored in a data field V and the entire transport and waiting time t of the ready-mixed concrete to or on the construction site is stored in a data field VI.
  • This concentrated data set documents essential quality information about an ordered and installed ready-mixed concrete, which is also accessible for a later evaluation in the sense of pattern recognition, damage analysis, recipe improvements and the like.
  • the invention is not limited to the preferred exemplary embodiment described above. Rather, modifications thereof are also conceivable, which are also covered by the scope of protection of the following claims.
  • the control parameter of the required mixing duration t M that determines the quality of the concrete, to also predict other or further variables, such as the actually required quantities of the individual components of the concrete.
  • the concrete mix can also be specifically preheated, for example. Thanks to the solution according to the invention, the quality of a concrete delivery can also be met in a contractual condition that can be met make a so-called smart contract and secure it along the production and use chain using blockchain technology.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Dispersion Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)

Abstract

L'invention concerne un procédé assisté par ordinateur et un dispositif pour commander une centrale à béton pour la fabrication de béton prêt à l'emploi (1) ou de béton mixte obtenu par mélange de constituants comprenant au moins du ciment (6a; 6b) et des granulats de roche (8a, 8b, 8c) avec ajout d'eau (9) dans une unité malaxeuse (3) motorisée, au moins la durée de malaxage nécessaire (tM) de l'unité malaxeuse (3) étant calculée avant le démarrage du processus de malaxage par l'intermédiaire d'une unité de pronostic électronique (10) qui tient compte de l'humidité actuelle (F) au moins des granulats de roche (8a, 8b, 8c) à ajouter, mesurée par l'intermédiaire d'au moins un capteur d'humidité (11), de la température de constituants (TK) mesurée ou déterminée par l'intermédiaire d'au moins un capteur de température (12; 13; 14) ou d'une caméra thermique, de la température de malaxeur (TM) et/ou de la température extérieure (TA) pour déterminer la durée de malaxage nécessaire (tM) de l'unité malaxeuse (3) sur la base d'une formulation de béton prédéfinie (18) en tenant compte des différentes valeurs de mesure déterminées par les capteurs.
EP20835698.0A 2019-12-11 2020-12-10 Procédé assisté par ordinateur et dispositif pour commander une centrale à béton Pending EP4072809A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019219373.0A DE102019219373A1 (de) 2019-12-11 2019-12-11 Computergestütztes Verfahren sowie Einrichtung zur Steuerung einer Beton-Mischanlage
PCT/EP2020/085500 WO2021116279A1 (fr) 2019-12-11 2020-12-10 Procédé assisté par ordinateur et dispositif pour commander une centrale à béton

Publications (1)

Publication Number Publication Date
EP4072809A1 true EP4072809A1 (fr) 2022-10-19

Family

ID=74125140

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20835698.0A Pending EP4072809A1 (fr) 2019-12-11 2020-12-10 Procédé assisté par ordinateur et dispositif pour commander une centrale à béton

Country Status (5)

Country Link
US (1) US20230033232A1 (fr)
EP (1) EP4072809A1 (fr)
CA (1) CA3161788A1 (fr)
DE (1) DE102019219373A1 (fr)
WO (1) WO2021116279A1 (fr)

Families Citing this family (5)

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Publication number Priority date Publication date Assignee Title
DE202021004053U1 (de) 2021-04-07 2022-08-17 Hypercon Solutions Gmbh Anlage zur Herstellung von Fertigbeton oder daraus gefertigten Produkten
DE102021006575A1 (de) 2021-04-07 2022-10-13 Hypercon Solutions Gmbh Anlage und Verfahren zur Herstellung von Fertigbeton oder daraus gefertigten Produkten
CN113290695B (zh) * 2021-07-26 2021-11-26 中国恩菲工程技术有限公司 基于电流信号反馈的充填料浆浓度调控方法及系统
CN114565561A (zh) * 2022-01-26 2022-05-31 福建南方路面机械股份有限公司 基于深度学习的混凝土配方调整方法、装置及可读介质
WO2024189538A1 (fr) * 2023-03-15 2024-09-19 Conext Global Advanced Concrete Technologies Ltd. Techniques de réglage de recettes de fabrication de béton d'une installation de fabrication de béton

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DD299279A5 (de) * 1990-02-12 1992-04-09 Baurationalisierung,De Verfahren zur bestimmung der notwendigen mischdauer
DE19511585B4 (de) * 1995-03-29 2010-07-01 Stetter Gmbh Verfahren und Vorrichtung zur Betonbereitung in einem Trommelmischsystem
DE19952462A1 (de) * 1999-10-29 2001-05-03 Gerd H Arnold Vorrichtung zum Bestimmen der absoluten Feuchtigkeit eines Materials
DE19952978A1 (de) * 1999-11-03 2001-05-10 Hudelmaier Joerg Qualitätsüberwachungsverfahren
JP2009184273A (ja) * 2008-02-07 2009-08-20 Pacific Technos Corp コンクリート材料の配合制御方法及びシステム
US8764272B2 (en) * 2008-04-07 2014-07-01 W. R. Grace & Co., -Conn. Method for monitoring thixotropy in concrete mixing drum
JP2015189080A (ja) * 2014-03-28 2015-11-02 住友大阪セメント株式会社 水硬性組成物の製造方法
JP7131943B2 (ja) * 2018-04-11 2022-09-06 前田建設工業株式会社 コンクリートの製造システム及びコンクリートの製造方法
JP7131951B2 (ja) * 2018-04-26 2022-09-06 前田建設工業株式会社 コンクリートの製造方法
CN109676795B (zh) * 2018-12-13 2020-09-04 中山艾尚智同信息科技有限公司 一种混凝土智能搅拌控制方法及其系统

Also Published As

Publication number Publication date
WO2021116279A1 (fr) 2021-06-17
CA3161788A1 (fr) 2021-06-17
US20230033232A1 (en) 2023-02-02
DE102019219373A1 (de) 2021-06-17

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