77 results about "Roller-compacted concrete" patented technology

The utility model relates to the technical field of dam body reinforcing and reinforcing structures, in particular to a roller compacted concrete dam body reinforcing and reinforcing structure which comprises a roller compacted concrete dam body, vertical reinforcing plates, clamping plates, transverse connecting mechanisms and adjusting mechanisms, the vertical reinforcing plates are fixed to the outer wall of the roller compacted concrete dam body at equal intervals, and the clamping plates are fixed to the outer wall of the roller compacted concrete dam body; the transverse connecting mechanisms are arranged between every two adjacent vertical reinforcing plates, every two adjacent clamping plates can be in butt joint rapidly through the arrangement of the transverse connecting mechanisms, and meanwhile the linkage gears can be in butt joint rapidly under the limiting effect of the toothed plates through the arrangement of the adjusting mechanisms. When the reinforcing and reinforcing structure is assembled, the transverse connecting rods can be driven to rotate quickly, then the telescopic rods are driven to be in threaded linkage in the screw holes, the distance between every two adjacent telescopic rods can be quickly adjusted, the clamping plates can be quickly tensioned and loosened, and then the whole reinforcing and reinforcing structure can be quickly disassembled and assembled.

The invention relates to the technical field of dam body paving construction, in particular to roller compacted concrete dam paving forming transverse joint construction equipment and method. The equipment comprises a joint cutting plate for cutting a transverse joint and an auxiliary positioning device for performing construction positioning on the joint cutting plate, the auxiliary positioning device comprises a base frame; the rectangular frame is vertically mounted on the base frame in a sliding manner; the bearing positioning frame comprises two positioning plates which are horizontally and oppositely mounted in the rectangular frame in a sliding manner; the two lower pressing frames are assembled on the two positioning plates in a one-to-one correspondence manner; the elastic supporting frames are connected between the base frame and the rectangular frame; the at least one limiting frame is assembled on the base frame and is positioned below the rectangular frame; according to the equipment provided by the invention, the auxiliary positioning device is matched with the joint-cutting plate, so that the stability and continuity of pressing-in joint-cutting guiding are greatly improved, the construction deformation of the joint-cutting plate is also avoided to the greatest extent, and the reuse period of the joint-cutting plate can be prolonged.

The invention discloses an intelligent quality detection system and method for roller compacted concrete, and the system comprises a data collection module which is used for obtaining underground data through the measurement of a ground penetrating radar on a to-be-detected land parcel, inputting the obtained underground data into a machine learning model, and outputting the obtained actually measured compactness; the underground model making module is used for acquiring an underground image output by the ground penetrating radar on the to-be-detected land parcel and making an underground model according to the underground image; and the compaction degree correction module is used for detecting the underground model by using a nucleon density instrument to obtain the detected compaction degree, and obtaining and outputting the corrected compaction degree according to the actually measured compaction degree. According to the method, the underground data output by the ground penetrating radar are converted into the compaction degree in a mode of establishing the model, the underground model is made through the underground image output by the ground penetrating radar, and the compaction degree is corrected by using the nuclear density instrument, so that the compaction degree is corrected under the condition that the built roller compacted concrete is not damaged. And the compaction degree of the roller compacted concrete is detected.

The utility model provides a composite type land fan foundation, and relates to the technical field of fan foundations. The structure comprises a stand and a foundation slab, an extension part is formed between the periphery of the stand and the foundation slab, normal concrete is poured in the stand and the extension part, the foundation slab comprises a bottom layer, a main body layer and a top layer which are sequentially paved from bottom to top, the bottom layer and the top layer are made of slurry-rich concrete, and the main body layer is made of roller compacted concrete. The junction area of the extension part and the foundation slab forms a combination area, in the combination area, the extension part and the foundation slab are overlapped in a layered and crossed manner, and radial joint bars for connecting the extension part and the foundation slab are arranged in the combination area, so that close combination of dissimilar concrete interfaces can be realized, and the force transfer characteristic is good; the formwork erecting procedure of normal concrete in the stand and the extending part can be omitted, construction is convenient, and the construction efficiency is high.

The invention discloses a roller compacted concrete construction method in a cold region, which comprises the following steps: heating coarse and fine aggregates in a closed preheating bin until the internal temperature is 5-10 DEG C, mixing by adopting a double-horizontal-shaft forced mixer, controlling the water temperature to be 25-35 DEG C, and adding a retarding water reducing agent; the mixed concrete is loaded into a dumper with an interlayer thermal insulation layer (filled with a polyurethane foaming material), and the transportation time is controlled within 40 minutes; after warehousing, paving in layers (each layer is 30-40cm) and rolling, pre-burying temperature sensors (arranged according to a 10m * 10m grid), and covering three layers of thermal insulation materials (a bottom layer polyethylene film, a middle flame-retardant polystyrene thermal insulation board and a surface layer waterproof canvas); when the temperature is lower than 5 DEG C, starting the fuel hot air unit to supply hot air through the galvanized steel pipe; warm water of 5-10 DEG C is automatically sprayed during curing, the curing time is corrected according to the temperature, and a curing agent is brushed after mold removal. The method is suitable for roller compacted concrete construction in cold regions, and the freezing injury risk and the crack occurrence rate can be comprehensively reduced.

The utility model discloses a roller compacted concrete test block forming device, and belongs to the technical field of concrete detection test auxiliary equipment. The device comprises a rack, a vibration mechanism, a test mold, a lifting driving assembly, a bearing plate and a control assembly, the vibration mechanism is arranged on the rack, the test mold is arranged on the vibration mechanism, the lifting driving assembly is arranged on the rack, the bearing plate is connected with the lower end of the lifting driving assembly through a pressure detection assembly and located above the test mold, and the control assembly is arranged on the rack. The control assembly is arranged on the rack and electrically connected with the pressure detection assembly and the lifting driving assembly. The device can automatically control the pressure bearing plate to apply pressure intensity of 4.9 Kpa to the surface of roller compacted concrete and keep the pressure intensity, the manufacturing quality of roller compacted concrete test blocks is ensured, the automation degree is high, operation and use are convenient, and the labor intensity is remarkably reduced.

The invention provides a roller compacted concrete dam based on prestress seismic resistance and a construction method thereof. The roller compacted concrete dam comprises a dam body, branch pipes, prestressed steel bars, top anchorage devices and bottom anchorage devices. The dam body comprises a plurality of dam body units formed by layered pouring in the height direction; the branch pipe is embedded in the dam body during dam body pouring construction, and a mounting hole channel is formed in the branch pipe; the prestressed reinforcements penetrate through the mounting hole channels; the top anchorage device and the bottom anchorage device are connected with the two ends of the prestressed reinforcement correspondingly so as to be suitable for conducting prestressed tensioning and anchoring on the prestressed reinforcement. Prestress tensioning is conducted on the dam body through the prestressed steel bars, an active prestress area can be formed, the tensile stress caused by seismic oscillation is effectively eliminated, and the anti-seismic stability and safety of the dam body are remarkably enhanced; the installation of the prestressed reinforcements is realized by presetting the branch pipes, so that the construction efficiency can be greatly improved, and the damage to the internal structure of the concrete in the construction process is reduced.

The application discloses a concrete production method, comprising the following steps: step 1, determining the quantity of materials needed to be added to ordinary concrete according to the required compressive strength of the roller compacted concrete; step 2, sequentially adding the required materials into the ordinary concrete and performing roller compacting mixing in the concrete; step 3, adding an admixture into the concrete obtained in step 2 through a low-temperature high-pressure spraying mixing mode; and step 4, adding asphalt into the concrete obtained in step 3 and uniformly mixing to obtain the roller compacted concrete. Further, the materials comprise stone powder, fly ash and pozzolanic admixture. The application increases the hardness and compressive strength of the ordinary concrete through material adding and process treatment, so that the roller compacted concrete can be produced on site when the demand is small, and factory ordering is not needed, thereby saving the construction cost.

The present invention belongs to the technical field of concrete engineering monitoring, and specifically discloses a monitoring system for the treatment of the bedding plane of a roller-compacted concrete gravity dam, including a data acquisition module for acquiring surface image information and internal cross-section image information; a data processing module for processing the surface image information and the internal cross-section image information; a three-dimensional construction module for constructing a virtual scene of the gravity dam, a virtual roller-compacted concrete layer, and a 3D model; a coordinate conversion module for converting three-dimensional coordinates into GPS coordinates; and a data analysis module for real-time regulating the concrete discharging point positions and the bedding strategies based on the parameter information of the previous roller-compacted concrete layer. The present invention anticipates problems in advance, provides positive guidance for the construction process, and by timely discovering and solving quality problems in the construction process, it avoids rework and repair costs caused by unqualified quality, and reduces the cost of the entire gravity dam construction.

This invention discloses a method, system, and equipment for identifying the construction progress of roller-compacted concrete dam surfaces: It acquires multi-camera video of the roller-compacted concrete dam surface, performs time synchronization, camera calibration, coordinate unification, regional modeling, and rasterization, and preprocesses the surface video; it detects, identifies, segments, and tracks construction equipment targets and surface conditions, mapping machine trajectories and work footprints to the construction plane, thereby completing statistical analysis of coverage area, number of compaction passes, dwell time, compliance status, and abnormal events; it calculates construction progress and efficiency indicators, compares them with the plan, and outputs progress diagnosis results, early warning information, scheduling suggestions, and report interface data. This invention utilizes on-site monitoring video, improving robustness under complex lighting, occlusion, and dust conditions through multi-camera spatiotemporal registration and deduplication fusion, reducing manual inspection costs, and enhancing the objectivity, timeliness, and traceability of progress perception.

The application discloses a method for precisely controlling construction quality of a roller compacted concrete interlayer, which comprises the following steps: S1, roller compacted concrete test preparation, determining a test site and a roller compacted concrete test block size, and dividing areas of the test block; S2, a roller test process, layer-by-layer rolling of the test block, and obtaining maturity results of different interlayer joints of the test block; S3, curing and coring of the roller compacted concrete test block, and obtaining test result data of the core sample; S4, analyzing tensile and compressive results of the core sample, and obtaining analysis conclusions of the tensile and compressive results of the sample; S5, according to S2 to S4, formulating control standards and treatment measures of the roller compacted concrete interlayer joints in different months; S6, in a roller compacted concrete dam construction process, corresponding treatment measures are carried out according to the control standards and treatment measures of the roller compacted concrete interlayer joints in different months; and S7, after the roller compacted concrete dam construction is completed, construction quality is checked and results are verified. The application can improve pouring quality of the roller compacted concrete.

The invention discloses a multiple anti-seepage structure of a roller compacted concrete dam, and belongs to the technical field of dam seepage prevention. The dam body is composed of multiple stages of material layers; the quick-setting rubber asphalt waterproof coating is sprayed on the upstream surface of the dam body; the water stop structure is arranged on the upstream of the dam body transverse seam; the drainage gallery is arranged in the dam body; and the dam body drainage hole is communicated with the drainage gallery. According to the anti-seepage structure, an existing anti-seepage structure is optimized and improved, and targeted solutions are provided; a plurality of anti-seepage structures are arranged inside and outside the dam for combined seepage prevention, and the method is particularly suitable for design and construction of anti-seepage structures of roller compacted concrete gravity dams in high-temperature and rainy areas under high-water-head and complex geological conditions. Through multiple anti-seepage measures, the anti-seepage structure integrating prevention, blocking and drainage is formed, the number of anti-seepage channels of the dam can be reduced, and the safety and durability of the whole structure of the dam are improved; meanwhile, part of the technology is improved and optimized, the waterproof quality is improved, and the service life is prolonged.

The invention discloses a roller compacted concrete composition adaptive to a high altitude environment and a preparation method thereof, and the roller compacted concrete composition comprises the following components in parts by mass: 60-100 parts of cement, 65-75 parts of fine aggregate, 100-120 parts of coarse aggregate, 10-20 parts of zeolite powder, 1-5 parts of dopamine hydrochloride, 5-15 parts of activated fiber, 0.2-0.4 part of aminated polystyrene microspheres, and 0.1-0.5 part of a carbodiimide cross-linking agent. And 1-2 parts of a water reducing agent. The problems of insufficient early strength, later shrinkage cracking and poor freezing resistance of concrete in a high-altitude environment are solved, a composite system of polydopamine modified zeolite and activated fibers optimizes pore distribution and a stress transfer path, the balance of early strength, crack resistance and durability is realized, and the early strength, crack resistance and durability of the concrete are improved. And a reliable concrete solution is provided for high-cold and high-altitude engineering.

The invention belongs to the technical field of concrete building materials, and particularly relates to hydropower station dam roller compacted concrete and a preparation method thereof. The roller compacted concrete disclosed by the embodiment of the invention comprises the following components in percentage by mass: 3.0%-4.1% of cement, 2.1%-2.4% of fly ash, 2.0%-2.3% of quartz rock micro powder, 28.0%-29.2% of fine aggregate, 59.6%-60.2% of coarse aggregate, 0.08% of a water reducing agent, 0.008%-0.01% of an air entraining agent and the balance of water. Wherein the quartz-an rock micro powder is a powdery admixture formed by grinding quartz-an rock aggregate. According to the roller compacted concrete, the Inan rock micro powder is used as an admixture, various performance requirements of design are met, meanwhile, the early-stage anti-cracking performance of the roller compacted concrete in the high-cold and high-altitude areas of the Tibetan area is improved, the anti-freezing performance, the anti-seepage performance and the like of the design are achieved, and the problem of insufficient supply of coal ash in the Tibetan area is solved.

This invention relates to a construction positioning device and method for a roller-compacted concrete dam transverse joint water-stopping system. The device includes a main frame, a positioning mechanism, and a roll-up mechanism. The main frame has panels on both its top and bottom surfaces. The positioning mechanism includes a guide sleeve, a positioning element, and fasteners. The fasteners are located on the outer wall of the guide sleeve and are used to clamp the positioning element. The roll-up mechanism includes a drum body, a rotating shaft, and a water-stopping element. The water-stopping element is located on the surface of the drum body to allow it to be embedded into a preset position as construction progresses. This device solves the problems of interference and material waste during the construction of multiple dam sections, enabling collaborative operation and green construction of the water-stopping system; it overcomes the drawbacks of traditional drainage hole construction techniques, achieving precise molding without pre-embedded pipes; and it solves the problems of chaotic on-site stacking of water-stopping materials and welding damage, ensuring the construction quality of the water-stopping system.

This invention discloses a crack-resistant roller-compacted concrete (RCC) structure. Several slow-release mechanisms are embedded between adjacent compacted layers within the RCC structure. These slow-release mechanisms are steel fibers with expanded clay aggregate connected to both ends. The invention also discloses a construction method for the crack-resistant RCC structure, comprising the following steps: 1. Fixing template A and then spreading the RCC; 2. Laying template B with the slow-release mechanisms and compacting it multiple times using a compaction machine; 3. Covering with mortar and then spreading the RCC; 4. Repeating steps 2 to 3 until the target thickness of the RCC structure is achieved. The RCC structure of this invention, by embedding slow-release mechanisms between adjacent compacted layers and connecting them with steel fibers, improves the bonding strength between the compacted layers. Combined with saturated expanded clay aggregate, it reduces drying shrinkage by slowly releasing moisture within the RCC, making it applicable to the field of RCC technology.

The invention relates to the technical field of construction of roller compacted concrete gravity dams in water conservancy and hydropower engineering, in particular to a construction method for continuous multi-dam-section rapid pouring of dam foundation cushion layer concrete of a roller compacted concrete dam. According to dam foundation cushion concrete, by means of measures of building a road in advance, directly replacing traditional bamboo plywood with asphalt cedarwood boards for formworks and the like, the situation that in the conventional pouring process, damage and pollution are caused to a dam section foundation surface due to the fact that an automobile enters a warehouse through adjacent dam sections, and then the foundation surface is cleaned repeatedly is reduced; compared with the tedious procedures of one-bin cleaning, one-bin checking and accepting, one-bin pouring and one-bin re-cleaning circulation in the prior art, the pouring efficiency of the low-slump distorted concrete of the dam foundation cushion layers of the adjacent dam sections is greatly improved, and the rapid and continuous pouring construction method is formed.

The invention discloses a dump truck unloading aggregate separation prevention device and method for roller compacted concrete construction, and belongs to the technical field of concrete construction. The invention relates to a dump truck unloading aggregate separation prevention device for roller compacted concrete construction. The dump truck unloading aggregate separation prevention device comprises a material guide assembly which is assembled at the tail part of a carriage and is used for reducing the unloading height difference. According to the device, aggregate separation is effectively prevented, by additionally arranging the device, the discharging height difference is reduced, the aggregate separation phenomenon of the three-graded roller compacted concrete is remarkably reduced, and the uniformity of the concrete is improved; the influence of aggregate separation on the compactness and strength of the roller compacted concrete is avoided, and the engineering quality is ensured; the device is simple in structure and convenient to operate, and extra manual intervention is not needed; and the method is suitable for various hydraulic and hydro-power engineering roller compacted concrete construction scenes, and has wide popularization and application values.

The utility model discloses a roller compacted concrete nucleon density instrument measuring hole forming device which comprises a drill rod (3) used for forming holes and an electric hammer (1), the power output end of the electric hammer is provided with a drill rod clamping system (4), the drill rod clamping system is connected with the drill rod through a quick release connector, the lower end of the drill rod is provided with an elliptic hammer head, and the elliptic hammer head is connected with the electric hammer. The electric hammer is further provided with an infrared distance meter used for automatically measuring the hole opening depth. According to the utility model, the drill rod can be driven by the electric hammer to rotate so as to realize the electric forming of the measuring hole on the roller compacted concrete, so that the hole opening efficiency is greatly improved, the depth of the measuring hole can be accurately controlled, the disturbance to the roller compacted concrete is small, and the compactness of the roller compacted concrete can be more truly detected.

The application discloses a metamorphic concrete and roller compacted concrete joint quality identification method, system and equipment based on a ground penetrating radar. One-dimensional original waveform data of a metamorphic concrete and roller compacted concrete joint position is obtained by using a ground penetrating radar. After data preprocessing, noise waveform data is obtained. The noise waveform data and the original waveform data are integrated into a data set after being uniformly labeled. The data set is divided into a training set, a validation set and a test set. Based on the training set and the validation set, a DNFN model is used to construct and train a concrete joint quality identification model. The trained concrete joint quality identification model is used to infer and predict the data in the test set to determine whether the metamorphic concrete and roller compacted concrete joint position quality is qualified or unqualified. The application can quickly, accurately and non-destructively identify whether the joint position quality is qualified or unqualified, thereby providing reliable technical support for engineering quality control.

The utility model discloses a dump truck discharging aggregate separation prevention device for roller compacted concrete construction, and belongs to the technical field of concrete construction. The utility model relates to a dump truck unloading aggregate separation prevention device for roller compacted concrete construction. The dump truck unloading aggregate separation prevention device comprises a material guide assembly which is assembled at the tail part of a carriage and is used for reducing the unloading height difference. According to the aggregate separation prevention device, aggregate separation is effectively prevented, by additionally arranging the aggregate separation prevention device, the discharging height difference is reduced, the aggregate separation phenomenon of the three-graded roller compacted concrete is remarkably reduced, and the uniformity of the concrete is improved; the influence of aggregate separation on the compactness and strength of the roller compacted concrete is avoided, and the engineering quality is ensured; the device is simple in structure and convenient to operate, and extra manual intervention is not needed; and the method is suitable for various hydraulic and hydro-power engineering roller compacted concrete construction scenes, and has wide popularization and application values.

The invention discloses automatic spraying equipment for roller compacted concrete dam interlayer treatment materials, and relates to the technical field of roller compacted concrete dam construction, the automatic spraying equipment comprises a slurry storage tank, a sprayer arranged at one end, a fixing frame and a containing cylinder arranged on the slurry storage tank, the top of the containing cylinder is connected with the slurry storage tank, and a cavity is formed in the fixing frame; a first connecting pipe and a second connecting pipe are arranged in the cavity, the first connecting pipe and the second connecting pipe are attached to the inner wall of the cavity, and one end of the first connecting pipe and one end of the second connecting pipe are connected with the containing cylinder; according to the device, when cement paste is conveyed to the containing cylinder, the segregation condition is detected through a microwave moisture meter probe, if indexes are met, the switching assembly closes one connecting pipe and opens the other connecting pipe, the cement paste directly enters the sprayer, if segregation is serious, the other connecting pipe is switched, the pressing roller is started to peripherally extrude the pipe, the water flow speed is reduced, and the cement paste is separated. And the separated particles and water converge and permeate in the pipe and then are discharged into the sprayer to be sprayed out.

This invention discloses a roller-compacted concrete conveying system, including an upper unloading platform, a lower receiving platform, and a pipeline. The pipeline is located between the upper unloading platform and the lower receiving platform. A storage hopper is provided on the upper unloading platform. The upper end of the pipeline is connected to the storage hopper via an upper valve, and the lower end of the pipeline is provided with a lower valve. A material level detection mechanism is provided on the storage hopper. The roller-compacted concrete conveying system also includes a concrete transport vehicle, a silo transfer vehicle, a control center, and a material detection mechanism for detecting the material quantity in the concrete transport vehicle. The material level detection mechanism, the upper valve, the lower valve, the concrete transport vehicle, the silo transfer vehicle, and the material detection mechanism are all connected to the control center. A roller-compacted concrete conveying method is also disclosed, using the roller-compacted concrete conveying system. This roller-compacted concrete conveying system and method can ensure good concrete quality, good coordination, high automation, and high overall efficiency.

The utility model provides a fog gun machine installation platform based on a dam body slope. The fog gun machine installation platform comprises a slope steel formwork, an installation platform body and platform supporting legs. The slope steel formwork is used for forming the slope of the roller compacted concrete dam, in the supporting state, a supporting part is arranged at the highest point of a formwork support of the slope steel formwork, and two hinge parts are arranged at the point, closest to the bin face of the roller compacted concrete dam, of the formwork support of the slope steel formwork. The two platform supporting legs are located on the same side of the mounting platform, and the bottom ends of the two platform supporting legs are hinged to the hinge part; the main body part of the mounting platform can rotate around the hinge part, and when the mounting platform rotates to a horizontal state, the lower end face of the main body part of the mounting platform is supported on the supporting part. The installation platform has the advantages that the slope steel formwork is used as a support, and the operation space of the dam body bin face is not occupied.

The application discloses a kind of multifunctional splicing structure suitable for white plus black pavement reconstruction and expansion, and relates to the technical field of road engineering, including pull rod, balance beam, high water permeable concrete belt, old road pavement structure includes from top to bottom set asphalt overlay, old cement board, old road water stable base layer and old road graded gravel cushion layer, expansion pavement structure includes from top to bottom set expansion asphalt surface layer, roller compacted concrete slab, water stable lower base layer, water stable bottom base layer and expansion road graded gravel cushion layer, asphalt overlay is connected with expansion asphalt surface layer, old cement board is connected with roller compacted concrete slab, one end of pull rod is located in old cement board, the other end of pull rod is located in roller compacted concrete slab, balance beam is located below old cement board and roller compacted concrete slab, high water permeable concrete belt is located below balance beam.The application solves the quality defects such as cracking, deformation, internal water damage and the like at the splicing place of new and old pavement.

The present invention discloses a method and system for inverse analysis of mechanical parameters of roller compacted concrete dams, which relates to the technical field of deformation monitoring of roller compacted concrete dams. It includes: obtaining a data sample set; establishing an MLSSVR model according to the data sample set; obtaining the displacements of each monitoring point of the roller compacted concrete dam by using the data sample set according to the MLSSVR model; calculating the fitness value g(x) of the objective function and taking the minimum value; obtaining the inverse value x of the mechanical parameters that makes the objective function g(x) the minimum value. The inverse analysis method of mechanical parameters of roller compacted concrete dams based on MLSSVR in the present invention shows good results in inverse analysis of mechanical parameters of roller compacted concrete dams; the MLSSVR model can replace the finite element method to reflect the non-linear mapping relationship between mechanical parameters and dam displacements, and can perform reliable inverse analysis on the mechanical parameters of roller compacted concrete dams, improving the accuracy and efficiency of inverse analysis of mechanical parameters of roller compacted concrete dams.

The invention provides a field test method and test system for initial setting time of roller compacted concrete, and solves the technical problem that the initial setting time of a roller compacted concrete layer is not continuously and effectively tested. The system comprises an electromotive force sensor which is used for forming a primary battery structure in combination with cement paste in concrete at a layout position and forming a primary battery electromotive force signal source in a concrete hydration process; the signal processing module is used for being controlled to collect electromotive force signals and forming electromotive force data through analog-to-digital conversion; the wireless transmission network is used for transmitting downlink acquisition control data and uplink electromotive force data; and the remote control analysis host is used for controlling acquisition and receiving of parallel electromotive force data, performing data processing on the electromotive force data to form an electromotive force change trend, identifying a clear state or parameter in the change trend according to a preset rule, and outputting the clear state or parameter on a human-computer interaction interface. And calculating a trend curve of electromotive force changing along with time through acquisition and measurement of the electromotive force so as to identify and judge the initial setting time of the concrete.

This invention discloses a method, system, and device for resource identification of roller-compacted concrete dam surfaces based on YOLOv10: The method involves acquiring a real-time video stream of the roller-compacted concrete dam surface; standardizing and enhancing each frame after frame decomposition to obtain enhanced surface images; defining resource target identification categories for the roller-compacted concrete dam surface, refining the surface images to obtain labeled images, and constructing a dedicated dataset for roller-compacted concrete dam surface resources; building and training a deeply optimized roller-compacted concrete dam surface resource identification model using the YOLOv10 model; using this model to infer the real-time video stream of the roller-compacted concrete dam surface, and post-processing the inference results using a spatiotemporally correlated target tracking algorithm to obtain structured resource information. This invention, through deep optimization of the YOLOv10 framework, specifically addresses the challenges of resource identification under multi-scale, dense occlusion, and strong background interference in RCCD surface scenarios, thereby achieving automated, accurate, and real-time monitoring of all construction elements.

The invention discloses a roller compacted concrete slurry adding modification construction homogeneity cooperative control device, which comprises a slurry metering module for calculating the output quantity of modified slurry according to a pouring rate, aggregate grading data and a slurry water-cement ratio; the compaction degree calculation module is used for calculating the compaction degree of the concrete according to the exciting force, the rolling depth and the rolling times; the detection module is used for generating a compactness distribution three-dimensional map; the control module is used for comparing the output quantity of the modified slurry with the output quantity of a preset adjustment instruction and generating a first correction strategy according to a comparison result; the compaction degree of the concrete is compared with a preset compaction degree threshold value, and a second correction strategy is generated according to a comparison result; and determining a to-be-adjusted area according to the compactness distribution three-dimensional map, generating an adjustment instruction of the to-be-adjusted area, and sending the adjustment instruction to the slurry metering module and the compactness calculation module. Accurate slurry metering control and compactness control are achieved, and timeliness and accuracy of construction adjustment are improved based on precise compactness detection.

The utility model discloses a test device for detecting the VC value of roller compacted concrete, and belongs to the technical field of concrete construction. Comprising a ring body and a pressing plate arranged in the ring body from top to bottom. A vibration motor is arranged on the pressing plate; the pressing plate is further provided with a plurality of balancing weights. According to the test device for detecting the VC value of the roller compacted concrete, the problem that the Veibog consistometer needs to be mounted at a fixed place is solved; a traditional test mode is subverted, and the device is adjusted to be in an upper vibration state, so that the whole device becomes a portable instrument.