557 results about "Slump" patented technology

The invention belongs to the technical field of bridge safety evaluation, and particularly discloses a method and a system for evaluating local scouring of a bridge pile foundation based on a flow velocity strain rate. A calculation model of a local scouring pit form and a maximum scouring depth of a river-sea crossing bridge pile foundation is established, and a Reynolds stress tensor is converted into a flow velocity strain rate scalar; the method comprises the following steps: providing an erosion-deposition model, analyzing an erosion-deposition rate, establishing a scouring depth relationship, utilizing a sediment transportation model of grid unit storage parameters, simulating dynamic response of a water-sediment mixture, and triggering sediment sliding and updating a riverbed terrain when the dip angle of a scouring pit is at a supercritical slope by virtue of a slump model. All the models cooperate to achieve efficient simulation of local scouring of the pile foundation. According to the method, the form evolution and the maximum scouring depth of the local scouring pit of the single pile and the pile group can be efficiently and accurately calculated, and support is provided for bridge pile foundation design and anti-scouring structure optimization.

The invention provides a bridge concrete strength detection method based on a pigeon inspired algorithm and an inversion theory, which comprises the following steps: establishing a two-dimensional concrete slab model of a railway overpass, and carrying out discretization modeling by adopting a finite element method; on the premise that initial parameters and boundary conditions are known, numerical analysis is conducted on the model, and the temperature field distribution situation of the concrete structure is obtained; carrying out optimization inversion on the temperature field data through a pigeon inspired algorithm, and constructing an objective function in combination with the existing concrete temperature field data, so as to invert the temperature distribution in the concrete; and evaluating the strength of the concrete based on the internal temperature data of the concrete, the cement hydration heat release characteristic and the transmissivity curve. The method has the beneficial effects that nondestructive testing of the internal temperature of the concrete is realized, so that the slump is accurately judged, the strength is accurately evaluated, and the problems that in the prior art, only the strength can be roughly judged, and damage to different degrees of a concrete structure cannot be effectively recognized are solved.

The invention discloses a concrete polycarboxylic acid water reducing agent with high slump loss resistance and flocculation resistance and a preparation method of the concrete polycarboxylic acid water reducing agent, and belongs to the technical field of concrete admixtures. The water reducing agent is prepared from the following raw materials in parts by weight: 45 to 55 parts of isopentenyl polyoxyethylene ether, 3 to 8 parts of methacrylic acid phosphate, 8 to 12 parts of hydroxyethyl acrylate, 4 to 7 parts of N-isopropylacrylamide, 10 to 15 parts of auxiliary monomer, 8 to 12 parts of initiator and 0.3 to 0.6 part of chain transfer agent. And the technical problems that the fluidity of the concrete is reduced and the slump retaining effect is poor due to the fact that the temperature of the concrete is increased in the stirring process are solved.

The invention discloses a slump detection device for concrete, and relates to the technical field of concrete slump detection.The slump detection device comprises a detection tamping mechanism and a lifting support installed on the outer side of the detection tamping mechanism, and a detection fixing mechanism is arranged at the bottom of the detection tamping mechanism; longitudinal threaded sleeves are arranged on the two sides of the interior of the detection fixing mechanism, the detection tamping mechanism comprises a first rotating support, a first rotating motor is fixedly installed on the outer side of the first rotating support, and the output end of the first rotating motor is fixedly connected with a first rotating worm. Due to the fact that a concrete mixture is loaded into the slump barrel in three times, and the concrete mixture is tamped by the tamping rod for 25 times from outside to inside in the spiral direction after being loaded each time, the concrete poured into the slump barrel for three times is adapted by changing the tamping amplitude, and the slump degree of the concrete mixture is changed. And the tamping uniformity of the concrete is improved.

The invention relates to the technical field of building materials, and provides washing gangue concrete with high slump loss resistance and a mixing process thereof. The high-slump-retaining washed gangue concrete is prepared from the following raw materials in parts by weight: 200 to 220 parts of cement, 140 to 150 parts of mineral powder, 60 to 65 parts of fly ash, 680 to 720 parts of machine-made sand, 950 to 970 parts of washed gangue, 150 to 160 parts of water, 16 to 17.5 parts of a water reducing agent, 0.15 to 0.3 part of a slump retaining agent and 4 to 4.3 parts of polyethylene glycol. The slump retaining agent is hydroxypropyl methyl cellulose ether; and the viscosity of the hydroxypropyl methyl cellulose ether is 100 thousand mPa.s to 300 thousand mPa.s. According to the technical scheme, the problems of poor slump retaining performance and low compressive strength of washed gangue concrete in the prior art are solved.

The invention discloses an automatic transportation-distribution device and method for rock-fill dam panel concrete, the device adopts a spiral stirring roller to continuously stir concrete, prevent initial setting or bleeding and maintain slump stability, the bottom of a stock bin is designed to be an adjustable concrete discharge port in the rotation direction, the concrete is automatically discharged through gravity, and the concrete is automatically conveyed and distributed. Precise putting is realized; automatic panel distribution is achieved through belt conveyor conveying and rail moving, and a rail system parallel to a panel is adopted as a moving system, so that the distribution system can flexibly move in the length direction of the panel; according to the method, the discharging efficiency of a chute and horizontal material distribution is quantified, the slump of concrete, the inclination angle of the chute and the friction coefficient are considered in the conveying capacity of the chute, geometric parameters and power parameters of a belt conveyor are considered in the discharging efficiency of the horizontal material distribution, and the discharging condition of the concrete is monitored in real time; parameters of the chute and the belt conveyor are automatically adjusted through an algorithm, and smooth connection of transportation and paving is ensured.

The invention discloses an efficient filling method for an underground small goaf group, and the method comprises the steps: constructing a three-dimensional model through laser radar scanning, and marking a communication relation and the stability of a top plate; dividing the goaf group into a main filling area and a secondary filling area, and designing a fractal topological structure drainage channel to form a gravity flow network; preparing filling slurry taking a cementing material, tailings and the like as main materials, and controlling parameters such as slump, initial setting time and the like; then, stepped pressure self-adaptive filling is adopted, slurry is injected in two stages, and the pressure and the flow speed are controlled; according to the method, the problems that traditional filling blind areas are large in number, material waste is serious and efficiency is low are solved, low-pump-pressure global coverage is achieved, the roof contact rate is remarkably increased, safe and efficient mining of mines is guaranteed, the comprehensive cost is reduced, and the method is suitable for underground small goaf group filling.

The invention discloses a large-area concrete pouring vibrating and leveling device and a using method, and belongs to the field of concrete pouring construction. Comprising a walking and stabilizing system, accurate positioning is achieved through four-wheel independent driving, and a hydraulic supporting column and a sliding rail weight box cooperate to dynamically balance overturning moment; the multi-degree-of-freedom telescopic arm system drives an end effector to perform three-dimensional positioning through a multi-stage hydraulic telescopic sleeve and covers a large-area operation area; the intelligent vibrating-leveling execution system and the modularized vibrating system are adopted, eight groups of high-frequency vibrating rods are carried on a main / expansion plate, an ultrasonic sensor is embedded in a rod body protection cylinder to generate a compactness cloud picture in real time, and a hose is driven to integrate a strain sensor to invert the slump; the self-adaptive leveling system and the laser grid scanner construct a three-dimensional elevation model, and the hydraulic elevation regulator realizes + / -0.1 degree grade gradient control. According to the method, traditional layering limitation is broken through, efficiency is improved, porosity and flatness errors are reduced, and manual safety risks are thoroughly eliminated.

The invention discloses a concrete mortar material mix proportion optimization method and system, and belongs to the technical field of concrete mortar. The invention discloses a concrete mortar material mix proportion optimization method. The method comprises the following steps: S1, establishing an initial mix proportion model; s2, obtaining an initial concrete mortar material mix proportion scheme; s3, constructing a concrete mortar material mix proportion optimization model; and S4, obtaining the mixing proportion of the concrete mortar material. The problem that the proportioning ratio of concrete mortar materials cannot be optimized in the prior art is solved, the use amount of a cementing material can be reduced, the cost is further saved, the compression resistance and the tensile strength are enhanced, the permeability and the carbonation are reduced, the freeze-thaw resistance and the erosion resistance are improved, the service life is prolonged, the slump, the fluidity and the plasticity can be improved, and the concrete mortar is suitable for large-scale production. The preparation method is simple, economic loss is reduced, the material mixing ratio can be optimized according to carbon emission, carbon dioxide generated in the concrete mortar production process is reduced, and the environmental protection effect is improved.

The invention provides a special-shaped curved surface floor support plate concrete spray forming method and system, and belongs to the field of concrete forming. The method comprises the following steps: executing coordinate conversion through engineering design data to obtain a to-be-filled space coordinate; nozzle constraint coordinates are selected through a user side; when the area of the special-shaped curved surface is larger than or equal to an area threshold value, forming simulation is executed according to the concrete discharging speed and the slump degree in combination with the jet paths of the jet nozzles with and without the jet nozzles, and first concrete filling coordinates are obtained; comparing the filling coordinate with the to-be-filled space coordinate, and extracting a first hole coordinate; and when the holes all meet the preset quality standard, concrete injection molding is conducted. According to the method, the technical problems of insufficient filling degree and poor forming quality caused by inaccurate planning of the concrete spraying path of the special-shaped curved surface floor support plate in the prior art are solved, and the technical effects of accurately planning the concrete spraying path of the special-shaped curved surface floor support plate, improving the filling degree and improving the forming quality are achieved.

The invention discloses quick-hardening high-strength lightweight aggregate concrete, which is prepared from the following raw materials: ordinary Portland cement, quick-hardening sulphoaluminate cement, a mineral admixture, silica fume, ceramsite, river sand, water and an additive, and the additive is a mixture of a water reducing agent, a slump retaining agent, a retarder, a thickening agent and an air entraining agent; after the ceramsite absorbs water and is saturated, the surface of the ceramsite is coated with a cementing material, and the cementing material is hydrated to form a slurry shell; ordinary Portland cement and quick-hardening sulphoaluminate cement are compounded, mineral admixtures and silica fume are doped, the early strength of the lightweight aggregate concrete can be improved, meanwhile, the development of later strength is guaranteed, a layer of slurry'shell 'is formed on the surface of ceramsite through the hydration effect of the cementing material, and the surface of the ceramsite is wrapped by the composite cementing material. According to the ceramsite wrapped with the ash, firstly, the strength of the ceramsite can be improved, and then the strength of the concrete is improved; 2, the water absorption and water return phenomena of the ceramsite can be avoided; and thirdly, the floating phenomenon of the ceramsite can be improved.

The invention discloses a grinding device and method for producing an anti-collapse agent for drilling fluid, and relates to the technical field of grinding devices. By arranging the anti-collapse agent grinding mechanism, when anti-collapse agent raw materials are ground, large anti-collapse agent particles can be ground through a coarse grinding roller firstly, and then fine anti-collapse agent particles subjected to preliminary grinding are ground again through a fine grinding roller; according to the grinding mode, the situation that an energy-saving motor is overloaded and damaged due to the fact that the large-particle anti-collapse agent is clamped between the grinding plate and the grinding roller is avoided, the coarse grinding roller can rapidly crush the large-particle anti-collapse agent, and therefore grinding and crushing operation of the fine grinding roller is more convenient, the grinding and forming speed of the anti-collapse agent can be increased, and the quality of the anti-collapse agent is improved. And the material distribution assembly can release anti-collapse agent raw materials at a constant speed through an auger, the situation that the anti-collapse agent raw materials are accumulated on the grinding plate in a concentrated mode, and consequently the anti-collapse agent cannot be evenly ground is avoided, and the grinding and crushing speed of the anti-collapse agent is increased.

The invention discloses a preparation process and application of a modified anti-segregation admixture for machine-made sand, and relates to the technical field of polymer modified materials. Modified polyoxyethylene ether and vinyltrimethoxysilane are adopted to construct a steric hindrance effect, styrene-acrylate emulsion is introduced to form an interpenetrating network structure, and nano silicon dioxide and bentonite are cooperated to construct a multi-scale enhancement system. Silane coupling agent hydrolysis and nano grafting reaction are realized through gradient heating, and the particle size distribution D90 of the emulsion is less than or equal to 5 microns by combining an ultrasonic-mechanical synergistic emulsification process. A three-dimensional network is formed by the composite thickening agent and anhydrous sodium sulfate, and after in-situ curing at 25 DEG C with RH greater than or equal to 80%, 0.1-0.5% of the additive is added, so that the slump retention value of the machine-made sand concrete is greater than 315mm (1h), the pressure bleeding rate is less than or equal to 9.7%, the 28d compressive strength is improved by 24.5-72.6 MPa, and the segregation resistance coefficient is reduced to 0.08-0.11. The technology breaks through the limitation of insufficient adaptability of traditional admixtures to machine-made sand, and is particularly suitable for long-distance pumping construction of high-stone-powder-content machine-made sand concrete.

The invention belongs to the technical field of tailing strain field evolution prediction, and discloses a full-tailing cemented filling body strain field evolution and crack prediction method, which comprises the following steps: preparing a full-tailing cemented filling body CPB sample, and carrying out an expansion degree test in the preparation process of the CPB sample; evaluating the uniaxial compressive strength of the CPB sample, and monitoring the surface change of the sample in the testing process through a digital image related acquisition technology; establishing a computer visual identification model based on an HSV color mode, and analyzing the area proportion and distribution condition of strain regions of different degrees to realize comprehensive analysis of the image; and determining an early warning signal of crack prediction according to an analysis result of the change condition of the strain field. According to the strain field evolution and crack prediction method for the full-tailing cemented filling body, quantitative analysis of strain evolution of the filling body is achieved, prediction and early warning are provided for the damage risk of the filling body, and the method has important significance for ensuring the safety and efficiency of mine operation.

The invention relates to the technical field of concrete detection, and particularly discloses a concrete slump test detector which is used for solving the problem of inconvenience in use in the prior art. Comprising a conveying belt used for supporting concrete, mounting side plates are symmetrically arranged on the two sides of the conveying belt, conveying motors used for driving the conveying belt to work are arranged on the mounting side plates, supporting legs used for supporting are symmetrically arranged on the two sides of the mounting side plates, and a plurality of slump cylinders used for forming concrete columns are arranged at the upper end of the conveying belt. The slump cylinder is connected with a separating mechanism used for driving the slump cylinder to be separated from the concrete column, and a supporting vertical plate is arranged on the other side, opposite to the separating mechanism, of the conveying belt. A plurality of concrete testing main bodies are designed and constructed according to existing requirements, the testing accuracy is improved, the conveying belt can be used for rotating before and after testing, so that concrete is transferred into the collecting mechanism, and the cleaning difficulty is reduced.

The invention discloses composite paste slurry suitable for pretreatment of a pier pile foundation in a karst area and a preparation method and a grouting method of the composite paste slurry, the composite paste slurry is based on the filling design of part of a karst cave but not the whole karst cave, cement, slurry, stone powder and a composite additive are prepared into semi-solid slurry with the slump of 5-10 cm, and the composite paste slurry has underwater anti-dispersion performance, the composite admixture is composed of a first admixture and a second admixture in a mass ratio of 1: 1; each cubic meter of the composite paste slurry comprises the following components by mass: 200 to 300 kg of cement, 550 to 780 kg of slurry and 820 to 1200 kg of stone powder, and the addition amount of the first additive and the second additive is 0.6 to 1% of the weight of the cement. The problems that when an existing pretreatment grouting technology is used for treating the karst problem of the bridge pier, the number of drilled holes is large, the reinforcing effect is common, cost is high, the environment is polluted, and adaptability to complex geology is insufficient are solved.

The invention discloses a concrete mixture slump measuring device which comprises a base and a sliding plate slidably mounted on the left side of the base, a slump cylinder is connected to the sliding plate through a driving mechanism, a filling mechanism is arranged on the right side of the base, and a knocking mechanism is arranged on the outer surface of the slump cylinder. The knocking mechanism comprises a rectangular shell, a small motor, two groups of rotating shafts, two groups of rotating gears, two groups of fixed shells, two groups of knocking shafts, two groups of shifting pieces and two groups of knocking hammers. The device has the beneficial effects that the feeding hopper is matched with the rotating disc in the shell, so that the sampled concrete can be uniformly filled into the slump cylinder through the discharge hole, the discharge quantity of the concrete at the discharge hole can be adjusted by the guide plate, and the top of the slump cylinder can be automatically stricken by the scraper; two groups of knocking hammers in the rectangular shell knock the slump barrel in a reciprocating manner, and the knocking hammers are uniformly distributed on the outer surface of the slump barrel, so that gaps generated in the concrete filling process are effectively eliminated, and the subsequent slump measurement result is improved.

The invention relates to the field of concrete, in particular to low-magnetism low-hydration-heat concrete and a preparation method thereof. The concrete comprises the following raw materials: a cementing material, fine aggregate, coarse aggregate, water and a water reducing agent, the cementing material comprises cement and slag powder, the cement accounts for 60%-70%, and the slag powder accounts for 30%-40%; the coarse aggregate adopts three-graded broken stone, the maximum particle size is 80 mm, the maximum value allowed by water transportation engineering specifications is met, and the use amount of a cementing material is effectively reduced and can be reduced by about 15% compared with that of common C30 concrete; the reduction of the cementing material not only can reduce the cost of the concrete and bring remarkable economic benefits, but also can reduce the hydration heat in the mass concrete, and does not need to add a hydration heat inhibitor to reduce the cracking risk of the concrete; the raw materials are detected by a metal detector, so that the raw materials are prevented from being mixed with magnetic substances, the slump of the concrete is 30-80mm, and the concrete is transported by adopting a hanging tank, a belt conveyor, a dumper and the like, so that the construction is convenient.

The application belongs to the field of concrete production, and particularly relates to a preparation process for improving the performance of machine-made sand concrete, which comprises the following specific steps: S1: taking ether water-reducing agent, ether slump-retaining water-reducing agent, retarder, mud inhibitor and water in a proportion of 160:35:20:5:780 respectively, and compounding the above-mentioned materials to obtain a composite admixture; S2: taking 585 parts of machine-made sand and cleaning the machine-made sand by using a cleaning device, then drying the cleaned machine-made sand, and then mixing the treated machine-made sand with 200 parts of fine river sand, 25 parts of red mud and 1050 parts of stone for 30-50 seconds to obtain a mixture A; S3: taking 60 parts of fly ash, 60 parts of mineral mud and 240 parts of cement, and adding the mixture A to obtain a mixture B after stirring and mixing for 40-50 seconds; the composite admixture is obtained by compounding the above-mentioned materials in a proper proportion, and the machine-made sand concrete is prepared by using a proper proportion, so that the slump retention performance of the concrete is improved, and the final setting time of the concrete is not greatly affected.

A slipform paver apparatus for controlling edge collapse in a newly formed concrete structure formed by a slipform paver. The edge height sensor generates an edge height signal corresponding to an edge height of the newly formed concrete structure to detect a collapse degree of the edge of the newly formed concrete structure behind the slipform paver mold. The controller receives the edge height signal, determines whether any collapse of the newly formed concrete structure edge exceeds a set collapse limit, and automatically controls the actuator assembly to adjust the height of the lateral edge portion of the mold floor relative to the interior portion of the mold floor in response at least in part to the edge height signal, and the edge height of the newly formed concrete structure is adjusted.

The invention discloses a large-volume low-slump pre-cooled concrete warehousing cooperative control method, and particularly relates to the technical field of concrete temperature control. Concrete raw materials are pre-cooled through a preset temperature control system, the factory temperature is reduced to a target range, and environment, equipment and concrete temperature data are collected in real time in the transportation process; generating a conveying operation data set; pre-cooling effect loss analysis is carried out based on the data set, a transportation environment influence index and a transportation equipment influence index are generated after hidden dangers are recognized and input into a convolutional neural network classification model, and high-quality or low-quality transportation operation is judged; for low-quality conveying operation, the optimization type is judged through fuzzy logic, and a corresponding strategy is executed; the temperature control state in the conveying process can be monitored in real time, low-quality operation can be intelligently recognized and optimized, dependence on manual intervention is reduced, temperature fluctuation in the conveying process can be effectively reduced through targeted regulation and optimization, and it is ensured that the temperature control effect is more reliable.

The invention belongs to the field of constructional engineering materials, and relates to uncovering self-compacting concrete as well as a preparation method and application thereof. The uncovering self-compacting concrete comprises a liquid material and a dry material; the liquid material contains a water reducing agent, a slump retaining agent, a thickening time control agent, a defoaming agent, a polymer emulsion, a beautifying agent, a viscosity reducer, water, and optional air entraining agent, stabilizer and preservative; the dry material contains glass powder, glass sand, cement, broken stone, gypsum, an expanding agent, gas-phase nano silicon dioxide toughened high-strength micro powder, modified sulfonated phenolic resin and a viscosity modifier. According to the uncovering self-compacting concrete disclosed by the invention, the problem of high bleeding rate caused when a polycarboxylic acid water reducer and a slump retaining agent are applied to production of the uncovering self-compacting concrete can be perfectly solved through synergistic cooperation of all the components, and meanwhile, the advantages of high transparency and strong scratch resistance caused by replacement of an admixture with a regenerated glass material are reserved; the strength of the uncovering self-compacting concrete is effectively reduced, the bleeding rate is reduced, and the setting time is prolonged.

The invention relates to the field of building materials, and discloses a mix proportion optimization method for high-slump-loss-resistant long-distance transportation concrete, which comprises the following steps: according to the engineering strength requirement of the concrete, designing basic parameters of the concrete, including strength grade, slump, transportation distance and environmental condition; selecting proper raw materials and determining the proportion; carrying out dynamic design and aggregate interface modification treatment, and treating the aggregate by adopting a silane coupling agent and a nano nucleating agent; the mixing process is optimized, and the stirring sequence and time are controlled; carrying out rheological property test and adjustment; slump retaining control is carried out in the transportation process, the slump degree is monitored in real time, and a water reducing agent is supplemented; and finally, verifying the adaptability on the construction site to ensure that the concrete performance meets the requirements. According to the invention, a staged charging and orderly dispersing process is adopted, and dynamic water replenishing and slump retaining control is combined, so that the technical effect of improving the workability of the concrete is achieved, and excessive loss of slump of the concrete in the transportation process is effectively prevented.

The invention relates to an online updating method and system for a concrete slump model of a concrete mixer, and belongs to the technical field of engineering equipment. During concrete transportation, after concrete loading and before concrete unloading, at least the torque of a loading driving motor of a concrete mixer and the rotating speed of a tank body are collected when the tank body rotates, and meanwhile, the manually measured artificial concrete slump of the same concrete sample is obtained; updating and training the slump detection model according to the acquired torque of the upper driving motor and the rotating speed of the tank body; the slump detection model is obtained by training based on a machine learning model. The sample library is continuously updated in the transportation of the concrete mixer, so that the concrete slump detection accuracy of the slump detection model is improved.

The invention relates to a composite material for a laminated slab, a preparation method and the laminated slab. The composite material comprises the following components in percentage by weight: 20%-35% of cement, 5%-15% of a mineral admixture, 50%-65% of sand, 0.05%-0.20% of a defoaming agent, 0.10%-0.25% of a polycarboxylate superplasticizer, 1.0%-3.0% of a composite expanding agent and 0.05%-0.20% of an early strength agent, and the fiber with the total volume mixing amount of 0.20%-0.70% is further included. According to the composite material disclosed by the invention, the slump of the material is remarkably improved by controlling the components and the content of a gelling system of the whole material, and self-leveling of a mixture is realized in a pouring process; by adding a high-performance chemical admixture and co-doping fibers, the overall bearing capacity of the bottom plate material is remarkably improved, the thickness of the plate is further reduced, and the working performance and mechanical performance of the laminated plate are improved. According to the laminated slab, the bottom plate with high breaking strength and compressive strength is selected, so that the thickness of the bottom plate is small, the purpose that the two-way slab is stressed during dense splicing of slab joints is achieved, and increase of the dead weight is avoided; and by arranging the fiber gridding cloth, the laminated plate has higher strength and flexibility, and cracking is avoided.

The invention relates to a concrete filled steel tube arch bridge rib core ultra-high performance concrete mix proportion design method, which comprises the following steps: (1) taking slump, expansion and 28d compressive strength as response values, and adopting a response surface method to carry out mix proportion optimization design on a water-binder ratio and the composition of a cementing material to obtain the optimal value of the water-binder ratio and the composition of the cementing material; and (2) taking the slump, the expansion degree, the relative pressure bleeding rate, the segregation rate, the 28d compressive strength and the 28d elastic modulus as response values, and performing optimization design on the steel fiber mixing amount, the coarse aggregate and the binder ratio by adopting a response surface method to obtain the optimal values of the coarse aggregate substitution rate, the steel fiber volume mixing amount and the binder ratio. The concrete-filled steel tube core steel fiber ultra-high performance concrete mix proportion designed by adopting a response surface method can have good pumping performance under the condition of not performing high-temperature steam curing, and has the characteristics of high strength, high elastic modulus, micro-expansion and the like.

The utility model discloses concrete slump detecting and adjusting equipment in a concrete truck. The night vision camera is arranged to shoot images of concrete, the infrared thermometer is arranged to detect the temperature of the concrete, the dryness and humidity sensor is arranged to detect the dryness and humidity in the stirring tank body, and a driver of the concrete truck observes the images through the display control device. And whether the slump of the concrete is insufficient or not is judged by combining temperature and humidity data, and when the slump of the concrete is insufficient, the display control device can control the adjusting valve and the hydraulic pump to output quantitative slump adjusting liquid into the stirring tank body, so that the slump of the concrete in the concrete transport vehicle is detected and adjusted more accurately.

The invention relates to the technical field of construction devices, in particular to a self-curing concrete slip form construction metal mold with variable scale width, which comprises a left side frame concave plate, a right side frame convex plate, a top film covering mechanism, a left side film covering mechanism and a right side film covering mechanism, the end face of the left end of the right side frame convex plate is matched with the left side frame groove in a sliding mode, and a feeding opening is formed in the lower portion of the left side wall of the left side frame concave plate; the left frame concave plate and the right frame convex plate are connected to form a cavity for filling concrete, and the blending formula material comprises 0.17% of super absorbent resin, 21% of a polycarboxylic acid water reducer and 0.012% of citric acid. The left-right width of the slip form mold can be adjusted, and therefore the requirement for different widths of poured anti-collision guardrails is met; by means of automatic film sealing and blending of specific formula materials in concrete, manual maintenance can be omitted, and the slip-form construction requirements for low-slump concrete construction and pumping are effectively met.

The utility model relates to concrete collapse degree detection equipment, which is used for solving the technical problems that a part of existing collapse degree detection equipment mentioned in the background technology does not position a slump barrel, and the slump barrel is possibly shifted when being knocked, so that the detection result of concrete is influenced. Comprising a bottom plate and universal wheels at the bottom of the bottom plate, a tray is arranged on the bottom plate, a slump barrel is placed on the tray, two opposite supporting pieces are fixedly arranged on the tray, a first air cylinder is fixedly arranged on each supporting piece, an arc-shaped clamping block is fixedly arranged at the telescopic end of each first air cylinder, and the two clamping blocks abut against the slump barrel oppositely. A scraper capable of moving vertically is arranged on the bottom plate, a vertical scale is arranged at one end of the scraper, and the scale is perpendicular to the scraper. The concrete slump detection device is simple in structure and mainly used for slump detection of concrete.

The present invention allows for better control over strength in concrete mixes and mix designs, while minimizing the over-use of cement and promoting sustainability within the industry. Disclosed are novel method and system which employ a diagnostic delta data (DDD) curve, or, in other words, data that displays a curvilinear relationship when plotted on a visual graph, as obtained by considering the differences (e.g., subtractive differences or ratios) as between (i) target slump and target (or maximum) water content, and (ii) slump and water content values as determined using an automated slump monitoring system which measures slump and water content in the concrete mix during delivery. This DDD curve can then be compared to monitored delta slump and delta water content for later or other deliveries, such that adjustments can be made to the concrete mix or mix design, in a manner that encourages avoidance of cement over-dosing or over-prescription.