76 results about "Ready mixed concrete" patented technology

The invention relates to the technical field of concrete preparation, in particular to a preparation device and a preparation process of carbon-sequestration premixed concrete, and solves the problems that in the existing preparation process of the carbon-sequestration premixed concrete, carbon dioxide gas is inconvenient to inject into the concrete, so that a pipeline is easily blocked, and the production efficiency is high. And concentration control during carbon self-sequestration of the carbon dioxide gas is inconvenient. The device comprises a fixed carbon preparation mechanism and a split-flow carbon injection mechanism, a stirring driving mechanism is installed on the inner side of the middle of the fixed carbon preparation mechanism, a sealing pressure maintaining mechanism is installed at the upper end of the fixed carbon preparation mechanism, and the split-flow carbon injection mechanism is installed on the inner side of the bottom end of the fixed carbon preparation mechanism; the split-flow carbon injection mechanism comprises a conical separation strip; and the conical separation strip is fixedly connected with the bottom end of the stirring and material placing shell. Carbon dioxide gas is conveyed in a pressurized mode, the pipeline can be effectively prevented from being blocked by concrete, the concentration of the carbon dioxide gas can be conveniently monitored and adjusted, and high efficiency of carbon sequestration is kept.

The invention discloses a preparation method of long-age high-crack-resistance low-carbon premixed concrete. The long-age high-crack-resistance low-carbon premixed concrete is prepared from the following components in parts by mass: 370 to 400 parts of cementing material, 32 to 44 parts of crack-resistance composite functional material, 750 to 810 parts of fine aggregate, 1070 to 1120 parts of coarse aggregate, 150 to 160 parts of recycled water and 5 to 10 parts of water reducing agent, the invention is characterized in that the cementing material comprises the following components in parts by mass: 120-220 parts of cement, 100-160 parts of fly ash, 40-70 parts of mineral powder and 20-60 parts of limestone powder; the anti-crack composite functional material comprises the following components in parts by mass: 3-5 parts of a hydration temperature rise inhibiting component, 1-2 parts of a fiber reinforced component, 4-5 parts of an inorganic proliferation waterproof component and 20-36 parts of an expansion component. The early-stage hydration heat of the concrete is effectively reduced and the occurrence time of a temperature peak is delayed through a mineral admixture compound doping technology, a hydration temperature rise adjusting technology, a fiber reinforcing technology, a staged whole-process shrinkage compensation technology, a crack repairing technology and an additive regulating technology; the shrinkage deformation resistance and passive crack repairing capacity of the concrete are enhanced, the crack resistance of the concrete is improved, and the concrete conforms to the green and low-carbon development principle.

The invention relates to the technical field of dust removal, in particular to an intelligent dust removal device and method for premixed concrete production.The intelligent dust removal device comprises a dust removal tank and a conical filter cylinder arranged in the dust removal tank and used for removing dust, a plurality of filter bags are fixedly connected to the interior of the conical filter cylinder, and a waste gas inlet pipe allowing waste gas to be guided in is connected to one side of the dust removal tank; the dust removal device further comprises a lifting guide plate which is fixedly connected to the interior of the dust removal tank, located below the waste gas inlet pipe and used for receiving waste gas, a plurality of lifting assemblies used for spraying gas are arranged at the top of the lifting guide plate, and the lifting assemblies are used for exciting dust to move upwards to be filtered through the filter bags. A dust collection assembly for sharing the filter load of the filter bag is arranged in the dust supporting backflow plate; and the branch pipe is fixedly connected to the interior of the dust removal tank, one end of the branch pipe is connected with a pulse assembly capable of cleaning the filter bag, and a dust collection box matched with the pulse assembly and used for collecting dust is arranged below the conical filter cylinder.

To provide a pressure feeding technique capable of maintaining quality without interfering with a reinforcing bar and a form by lifting a pressure feeding pipe by a crane, since there is a regulation for placing ready-mixed concrete within a limited time in concrete placing work.SOLUTION: In the concrete placing method, rubber hoses 2A and 2B are connected to both ends of a suspension pipe 10 to which a plurality of pressure feed pipes 1 are connected, one rubber hose 2A of the suspension pipe 10 is connected to a pressure feed pipe 12 from a pump vehicle on the ground, and the other rubber hose 2B is discharged toward a place to be placed, and the suspension pipe 10 is lifted by using a crane 30 for lifting materials installed on the site, and is freely moved and pressure-fed in a suspended state to prevent interference with a reinforcement and a form.SELECTED DRAWING: Figure 1

To improve prediction accuracy of a prediction model constructed by machine learning.SOLUTION: Acquiring color captured image data obtained by capturing an image of an aggregate, generating input image data by sequentially performing first processing for grayscaling, second processing for darkening, and third processing for binarization on the captured image data, acquiring input information including the input image data, and using a prediction model constructed in advance by machine learning so as to output a physical property value of the aggregate according to an input of the input information, A prediction step of acquiring the physical property value corresponding to the input information acquired in the second acquisition step.SELECTED DRAWING: Figure 5

To solve the problem in which it has been difficult to pressure-feed fresh mortar or fresh concrete containing fiber reinforcement by a pump using a pressure pipe.SOLUTION: This invention relates to a pressure feeding method using a pressure feeding system which is arranged downstream of a tapered pipe of a pump for feeding fresh mortar or fresh concrete and which comprises a pipe body and a stirring portion. The pipe body comprises a first connection portion arranged on its upstream side and a second connection portion arranged on its downstream side. The stirring portion is built in the pipe body and comprises a rotational shaft and a pin-shaped stirring branch erected on the rotational shaft, the stirring portion not being present within a pressure feeding pipe. When the fresh mortar or fresh concrete contains reinforcing fibers, an inner diameter of the pipe body is 50 to 250 mm, an outer circumferential diameter of the stirring branch is 3 to 20% of the inner diameter of the pipe body, a distance between the first connection portion and the second connection portion is 30 to 100 mm, and a rotational speed of the rotational shaft is 5 to 30 rpm.SELECTED DRAWING: Figure 4

This invention proposes a carbonized calcined coal gangue solid waste-based cementitious material and its preparation method, belonging to the technical field of coal gangue solid waste utilization. The raw materials for the carbonized coal gangue-based cementitious material of this invention include 30-70 parts of calcined coal gangue powder, 20-50 parts of premixed concrete waste, 10-20 parts of cement, 0-5 parts of gypsum, 0.5-1.0 parts of surfactant, and 0.1-0.5 parts of organic amine. First, the coal gangue solid waste is crushed, ground, and calcined. Then, it is mixed with premixed concrete waste, ordinary silicate cement, gypsum, surfactant, and organic amine. Finally, industrial carbon dioxide is introduced and the mixture is dried to obtain the final product. The performance indicators of the carbonized calcined coal gangue solid waste-based cementitious material of this invention are comparable to those of PO 42.5 grade cement, realizing the large-scale utilization of coal gangue solid waste and the preparation of low-carbon cementitious materials. The process is simple and has practical application value.

The invention relates to a mix proportion design method and application of machine-made sand concrete doped with a dry cleaning and slurry wrapping medium, and aims to solve the technical problem of efficient resource utilization of the dry cleaning and slurry wrapping medium of a concrete mixing truck. By means of the machine-made sand concrete mix proportion design method, the slurry wrapping medium generated by dry cleaning of a concrete mixing truck can be completely utilized in a resource mode, the concrete mix proportion design efficiency is improved, the test period is shortened, the cement consumption is reduced, and the economic cost is reduced; the environment pollution caused by waste water and waste slurry generated by washing the concrete mixing transport vehicle is avoided, the development of the dry cleaning technology of the concrete mixing transport vehicle can be promoted, no waste is generated in cleaning of the concrete mixing transport vehicle, and the clean and sustainable green development of the premixed concrete industry is promoted.

To provide a concrete pump vehicle that can be towed in a stable condition. [Solution] The concrete pump vehicle comprises a frame, a towed section provided at one end of the frame in the front-rear direction, a pump unit mounted on the frame for pumping ready-mix concrete, a drive section mounted on the frame for driving the pump unit, and a running section rotatably attached to the frame, wherein the drive section is positioned between the towed section and the running section in the front-rear direction.

The invention discloses a carbon emission reduction metering method for green low-carbon concrete. The method comprises the following steps: replacing one or more of part of cement, sand, stone and other raw materials with solid waste in a production stage of premixed concrete, dynamically adjusting the replacement rate of the solid waste, monitoring the carbon emission of the material in real time, and realizing carbon emission reduction. According to the method, four key variables are introduced, the solid waste substitution rate is dynamically adjusted by calculating the influence of each variable on the overall carbon emission, the optimization mechanism ensures that the carbon emission of the concrete is minimized on the premise of meeting the engineering performance requirements, and the traditional method mostly depends on a fixed substitution ratio or an empirical formula, so that the method is very practical. And a dynamic variable mechanism is combined with data feedback, so that proportion optimization is more accurate, different engineering requirements and environmental conditions can be adapted, and intelligent development of green building materials is promoted.

To provide an adjustment method for an expansive additive blending amount into a ready-mixed concrete, capable of determining an appropriate blending amount of expansive additive so as to secure a desired expansion amount in response to a setting time that varies each time, a manufacturing method for the ready-mixed concrete, etc.SOLUTION: An adjustment method for an expansive additive blending amount into a ready-mixed concrete containing cement, water, aggregate, admixture, and expansive additive includes the steps of: obtaining a correlation between an expansive additive blending amount of the ready-mixed concrete, a setting time of the ready-mixed concrete, and an expansion amount of the ready-mixed concrete; determining an estimated blending amount of expansive additive from an expected setting time of the ready-mixed concrete and a required setting expansion amount of the ready-mixed concrete based on the correlation; and blending the expansive additive into the ready-mixed concrete in the estimated blending amount. In the step of determining the correlation, the correlation is obtained by examining the expansion amount and the setting time for each ready-mixed concrete having a different blending amount of the expansive additive.SELECTED DRAWING: None

Provided is a shape acquisition method for acquiring shape information about a plurality of objects arranged in a grid shape so as to surround a predetermined space, the method including: inserting, into the predetermined space, a rod-shaped sensor holding part for holding a sensor; detecting light from at least one object among the plurality of objects with the sensor held by the sensor holding part; and determining the shape information about the at least one object by using the detection result of the light from the object. For example, the shape of a rebar or the like in a framework can be easily measured without using a large-sized measuring device before pouring ready-mixed concrete.

This invention relates to the field of construction management technology and discloses a method for managing the pouring of ready-mixed concrete on construction sites, including the following steps: Step 1: Data Acquisition Stage: S1.1 By scanning the QR code on the concrete raw material packaging, the type, batch number, and production date information of cement, aggregate, fly ash, and admixtures are automatically entered. This invention constructs a full-dimensional data acquisition network by deploying temperature and humidity sensors, slump sensors, pressure sensors, and vibration sensors. Combined with LoRa wireless transmission technology, data integrity is achieved: temperature data is collected every minute (initial setting stage), and slump data is collected every 5 minutes (final setting stage), forming a continuous temperature curve; rapid response to anomalies: abnormal data is reconstructed through cubic spline interpolation to ensure monitoring continuity; decision support: a 128×128 pixel infrared thermal image and a T×N sensor matrix are provided for the CNN model, improving the accuracy of quality prediction.

The invention relates to the technical field of constructional engineering construction management, and discloses a construction site premixed concrete pouring management method, which comprises the following steps: step 1, a data acquisition stage: S1.1, automatically inputting varieties, batch numbers and production date information of cement, aggregate, fly ash and additives by scanning a two-dimensional code on a concrete raw material package; a temperature and humidity sensor, a slump sensor, a pressure sensor and a vibration sensor are arranged to construct a full-dimensional data acquisition network. By combining with a LoRa wireless transmission technology, data integrity is realized: temperature data is collected every minute (in an initial setting stage), slump data is collected every five minutes (in a final setting stage), and a continuous temperature curve is formed; abnormal quick response: reconstructing abnormal data through cubic spline interpolation to ensure monitoring continuity; and decision support: providing a 128 * 128 pixel infrared thermal image and a T * N sensor matrix for the CNN model, so that the quality prediction accuracy is improved.

The utility model provides a kind of image acquisition equipment, belong to concrete transportation monitoring technical field.The equipment includes shell, transmission assembly, driving part and acquisition component.Shell includes the first installation surface and the second installation surface oppositely arranged along first direction.Transmission assembly includes first transmission part and second transmission part, and first transmission part is slidably connected to the first installation surface, and second transmission part is slidably connected to the second installation surface.Driving part is respectively abutted with first, second transmission part along the opposite sides of first direction, to make when driving part rotates, first, second transmission part can move in opposite direction along second direction.Acquisition component is connected with second transmission part.When acquisition component is in standby state, first transmission part can be covered and set in the opening of first installation surface, when acquisition component is in working state, acquisition component can pass through opening and gather image.The image acquisition equipment of the utility model can monitor the state of ready-mixed concrete in real time during transportation.

To improve prediction accuracy when predicting quality by using a prediction model constructed by machine learning.SOLUTION: A quality prediction method of an aggregate includes a first acquisition step of acquiring color captured image data obtained by imaging an aggregate to be evaluated, a pre-processing step of generating input image data by gray-scaling the captured image data, a second acquisition step of acquiring input information including the input image data, a prediction step of acquiring a physical property value corresponding to input information acquired in the second acquisition step using a prediction model constructed in advance so as to output the physical property value of the aggregate according to an input of the input information, and a construction step of constructing the prediction model by machine learning based on training data. IB [lx] is 0.2 times or more of IA [lx] and 5 times or less of IA [lx], where IA [lx] is the illuminance among the environmental conditions when imaging the aggregate for training, and IB [lx] is the illuminance among the environmental conditions when imaging the aggregate to be evaluated.SELECTED DRAWING: Figure 12

To provide a method of immobilizing carbon dioxide present in gas containing carbon dioxide, using ready-mixed concrete sludge, which is of high processing efficiency and can immobilize a large amount of carbon dioxide.SOLUTION: The method of immobilizing carbon dioxide comprises the steps of preparing ready-mixed concrete using a material at least including cement, fine aggregate, coarse aggregate and water, recovering ready mixed concrete sludge which is the residue of the ready mixed concrete and has a higher water / cement ratio relative to the ready mixed concrete, and immobilizing carbon dioxide present in gas containing carbon dioxide by supplying the recovered ready mixed concrete sludge or the water-content adjusted product thereof with gas containing carbon dioxide, when a time in a range of 1.0 to 12 times the time from the preparation of the ready mixed concrete to the beginning (JIS R5201) of the setting of the cement has passed.SELECTED DRAWING: None

To improve the prediction accuracy when predicting the quality of ready-mixed concrete using a predictive model. [Solution] A method for predicting the quality of ready-mixed concrete, comprising: a construction step of constructing a predictive model by machine learning based on training data including multiple datasets; an acquisition step of acquiring multiple feature quantities obtained when manufacturing ready-mixed concrete using a mixer; and a prediction step of using the predictive model to acquire a predicted quality value corresponding to the multiple feature quantities acquired in the acquisition step, wherein each of the multiple datasets is associated with multiple feature quantities and the correct quality value, and the multiple feature quantities include one or more load feature quantities related to the power load value of the mixer when mixing concrete materials or stirring ready-mixed concrete, and in the construction step, a predictive model is constructed such that one or more feature quantities selected from the multiple feature quantities are associated with the predicted quality value by a decision tree.

The present invention discloses an energy-saving batching device for ready-mixed concrete, which is applied in the technical field of ready-mixed concrete. The present invention provides a feeding weighing mechanism. When the concrete ingredients are pre-mixed, they are bolted to the merging component on the top through the pre-mixing frame, so as to support the gravel weighing component, sand weighing component and cement weighing component on the rear side of the top of the merging component and keep them in a connected state. Then, the gravel weighing component, sand weighing component and cement weighing component are respectively used to store the gravel, sand and cement for preparing the concrete ingredients, and the gravel, sand and cement inside the gravel weighing component, sand weighing component and cement weighing component can also be weighed, so that the gravel, sand and cement are pushed respectively through the pushing components provided inside the gravel weighing component, sand weighing component and cement weighing component.

The invention relates to a premixed concrete mixing plant wastewater treatment device, and belongs to the technical field of premixed concrete engineering, and the premixed concrete mixing plant wastewater treatment device comprises a coagulating basin, a mixing mechanism, a chemical feeding body, a chemical adding assembly and a driving assembly, the stirring mechanism comprises a stirring rod rotationally arranged in the coagulating basin, a stirring blade assembly arranged on the stirring rod and a driving source arranged on the coagulating basin, and the driving source is used for driving the stirring rod to rotate; the medicine passing body is slidably connected to the stirring rod in the radial direction of the stirring rod, and the medicine passing body is provided with a plurality of medicine outlet nozzles used for discharging medicine; the chemical adding assembly is arranged on the coagulating basin and is used for introducing chemicals into the chemical introducing body; the driving assembly is used for driving the medicine passing body to reciprocate when the stirring rod rotates. The wastewater destabilizing agent has the advantages that the agent can be conveniently and uniformly dispersed in wastewater in a short time, and the wastewater destabilizing effect is improved to a certain extent.

The invention belongs to the field of cement admixtures, and provides a green and environment-friendly water reducing agent material and application thereof.The green and environment-friendly water reducing agent material is prepared by compounding core-shell structure nanoparticles (the particle size D50 is 80-200 nm, and the shell thickness is 5-25 nm) with polycarboxylic acid macromolecules as cores and silicon dioxide as shells, the polycarboxylic acid macromolecules and sodium gluconate; high-solid low-viscosity preparation with the solid content being 40-50% and the viscosity being 50-200 mPa.s is achieved, the initial fluidity of neat paste is larger than or equal to 260 mm and the retention rate in 30 min is larger than or equal to 90% when the water-binder ratio is 0.28-0.32 and the mixing amount is 0.2-1.5%, and the water reducing rate is larger than or equal to 25% and the slump retention rate in 60 min is larger than or equal to 85% when concrete is prepared with the water-binder ratio being 0.28-0.40. The technical contradictions of high water-reducing rate and high fluidity keeping coupling, high solid content-low viscosity and nanoparticle dispersion stability synergy and high early strength and long construction slump retaining time balance are synchronously solved, and the water-reducing agent is suitable for the fields of premixed concrete and cast-in-place concrete.

To enable discharge of ready mixed concrete with a single vehicle during an emergency without adding a driving source.SOLUTION: A mixer vehicle 100 comprises: a mixer drum 10 rotatably mounted on a vehicle; a water tank 31 in which water used for cleaning is stored; and a water pump 32 having a pump 32a connected to the water tank 31 and a motor 32b for driving the pump 32a. The motor 32b is detachably or disconnectably connected to the mixer drum 10 and is capable of rotating the mixer drum 10.SELECTED DRAWING: Figure 3

To improve prediction accuracy of a prediction model constructed by machine learning.SOLUTION: Acquiring color captured image data obtained by capturing an image of an aggregate, generating input image data by sequentially performing first processing for grayscaling and second processing for performing edge detection on the captured image data, acquiring input information including the input image data, and using a prediction model constructed in advance by machine learning so as to output a physical property value of the aggregate according to an input of the input information, A prediction step of acquiring the physical property value corresponding to the input information acquired in the second acquisition step.SELECTED DRAWING: Figure 5

The present application relates to the technical field of remote control, in particular to a ready-mixed concrete multi-station remote centralized control system and a control method, the control system comprising a control node arranged at each production line of a mixing station; a remote centralized control module comprising an engineer station computer and n control units, each control unit being used to control the control nodes of at least two production lines; a communication module used to communicatively connect the control nodes arranged in the mixing station in a region to the same network to realize collaborative control of multiple control nodes; the remote centralized control module and the control nodes arranged at the production lines in the mixing station perform data interaction through the communication module, and the engineer station computer uniformly manages and schedules the control units and the control nodes to dynamically manage and schedule the collaborative production of any two production lines in the region. The present application realizes collaborative production of multiple mixing stations, optimizes resource allocation and production scheduling, improves the working environment, saves costs and improves production efficiency.

To provide a construction method of a permanent mold and a precast permanent mold panel used for the construction method of the permanent mold for preventing generation of cracks on a front surface of a precast permanent mold panel body after construction.SOLUTION: A construction method of a permanent mold includes a process of arranging a buffer partition member 4 at a position between a left side metal fitting 3A to be connected and a right side metal fitting 3B to be connected on a rear surface 2a of a precast permanent mold panel 1. Self-shrinkage deformation of ready mixed concrete 12 generated in a cure process is restrained with the buffer partition member 4 to disperse tearing force causing generation of cracking so as to suppress its transmission to a panel body 2 of the precast permanent mold panel 1, which prevents generation of cracking on a front surface side of the panel body 2 of the precast permanent mold panel 1 after constructing a permanent mold 10.SELECTED DRAWING: Figure 2

The application discloses a kind of pre-mixed concrete intelligent sampling and working performance monitoring device, including power system, sampling system, test system, determination system and cleaning system;Wherein sampling system is set to the test system directly above, wherein sampling system includes rounded trapezoidal sampling bucket with gate, test system is located below the sampling bucket for receiving and sample recovery, and the determination system is used to detect the slump and spread of concrete sample in the sampling system.The application realizes the automatic sampling and working performance real-time monitoring of pre-mixed concrete in the production process, is convenient to operate, effectively reduces the work pressure of staff, and guarantees product quality, promotes the development of concrete quality control application field, lays a good foundation for intelligent monitoring of building materials, and has significant practical engineering value.

To improve prediction accuracy of a prediction model constructed by machine learning.SOLUTION: A first acquisition step of acquiring color captured image data obtained by capturing an image of a bone material; and a second acquisition step of sequentially performing a first process of converting the captured image data into grayscale data and a second process of binarizing the captured image data by Otsu's binarization on the captured image data. A quality prediction method of an aggregate, comprising a pre-processing step of generating input image data, a second acquisition step of acquiring input information including the input image data, and a prediction step of acquiring a physical property value according to the input information acquired in the second acquisition step by using a prediction model constructed in advance by machine learning so as to output the physical property value of the aggregate according to an input of the input information.SELECTED DRAWING: Figure 5

An advanced concrete drum cleaning system that includes a dynamically controlled oscillating nozzle, a boom zeroing function, a breakaway mounting plate, and a hydraulic assembly for enhanced safety. The system features a motor-driven nozzle having a stroke length that can be dynamically adjusted in real-time using feedback from an encoder. A controller with a user interface allows operators to precisely control and monitor the nozzle's position. Additionally, the system includes a boom zeroing function, enabling the operator to set and maintain a reference position for the boom within the concrete drum. The hydraulic assembly, consisting of lifting and lowering components, allows the nozzle housing to quickly disengage from obstructions to prevent damage. Moreover, the breakaway mounting plate provides a means for limiting damage when the nozzle housing is unable to disengage from obstructions.

To improve the prediction accuracy when using predictive models to forecast the quality of ready-mixed concrete. [Solution] A method for predicting the quality of ready-mixed concrete, comprising: a construction step of constructing a predictive model by machine learning based on training data including multiple datasets; an acquisition step of acquiring multiple feature quantities obtained when manufacturing ready-mixed concrete using a mixer; and a prediction step of using the predictive model to acquire a predicted quality value corresponding to the multiple feature quantities acquired in the acquisition step, wherein each of the multiple datasets is associated with multiple feature quantities and the correct quality value, and the multiple feature quantities include one or more load feature quantities related to the power load value of the mixer when mixing concrete materials or stirring ready-mixed concrete, and in the construction step, a predictive model is constructed such that one or more feature quantities selected from the multiple feature quantities are associated with the predicted quality value by a decision tree.

An advanced concrete drum cleaning system that includes a dynamically controlled oscillating nozzle, a boom zeroing function, a breakaway mounting plate, and a hydraulic assembly for enhanced safety. The system features a motor-driven nozzle having a stroke length that can be dynamically adjusted in real-time using feedback from an encoder. A controller with a user interface allows operators to precisely control and monitor the nozzle's position. Additionally, the system includes a boom zeroing function, enabling the operator to set and maintain a reference position for the boom within the concrete drum. The hydraulic assembly, consisting of lifting and lowering components, allows the nozzle housing to quickly disengage from obstructions to prevent damage. Moreover, the breakaway mounting plate provides a means for limiting damage when the nozzle housing is unable to disengage from obstructions.