433 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 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 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 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 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 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.

The invention discloses a concrete slump measuring device which comprises a bottom plate, a slump cylinder, a measuring mechanism, a positioning and locking mechanism and an inserting and tamping mechanism, wherein the measuring mechanism is used for measuring the expansion degree and the slump degree of a material; the positioning and locking mechanism is used for positioning the slump cylinder at an expansion degree marking circle center and attaching and locking the slump cylinder on the bottom plate; the inserting and tamping mechanism is used for realizing inserting and tamping in the slump cylinder and lifting the slump cylinder; the measuring mechanism comprises an expansion degree mark, a slump scale rod and a long ruler; the positioning and locking mechanism comprises a positioning hole and a bolt assembly; the inserting and tamping mechanism comprises an electric telescopic piece, a motor, a connector, a tamping rod and a protrusion. The device avoids errors caused by manual insertion and cylinder lifting, is accurate in measurement and simple to operate, and can be operated by a single person.

The invention provides a concrete slump control system and method combining AI monitoring and ERP, and relates to the technical field of building materials, the system comprises: a proportioning parameter acquisition module for acquiring concrete proportioning design parameters; the path determining module is used for determining a transportation path according to the transportation vehicle-mounted end and the mixing station end; the attenuation prediction module is used for acquiring vehicle-mounted operation condition data of the vehicle-mounted end to determine a transportation attenuation index; the output prediction module is used for collecting a stirring image and inputting the stirring image into a double-flow neural network to obtain predicted output slump; and the compensation control module is used for transmitting the transportation attenuation index to the stirring station end to carry out compensation control on the predicted slump of the machine. The technical problem that the slump does not meet the design requirement when the concrete reaches a construction site due to the fact that the influence of the transportation process on the slump of the concrete cannot be comprehensively considered in the prior art is solved, and the technical effects of accurately controlling the slump of the concrete and improving the quality stability of the concrete are achieved.

The invention discloses a conical cement pole production auxiliary forming device, which belongs to the technical field of building material production and comprises a rotating speed optimization system. The method comprises the following steps: constructing a concrete pole characteristic model, a fluidity evaluation model and an aggregate analysis model by acquiring geometric characteristics (wall thickness, length and diameter ratio) of a concrete pole, cement slurry fluidity (slump and viscosity) and aggregate information (particle size and density), and outputting an aggregate-flow adaptation degree; and dynamically adjusting the rotating speed of the mold by combining the cement paste temperature and utilizing the rotating speed basic model and the optimization model. The problems of non-uniform compactness and aggregate distribution defects caused by fixed rotating speed in a traditional centrifugal process are solved, and the forming quality and the structural strength of the conical concrete pole are remarkably improved.

The invention discloses a tensile and anti-crack concrete pole, which belongs to the technical field of concrete materials and comprises the following components in proportion: 380-450 kg / m < 3 > of cement, 20-40 kg / m < 3 > of silica fume, 50-80 kg / m < 3 > of fly ash, 1000-1150 kg / m < 3 > of broken stone, 650-750 kg / m < 3 > of sand, 0.5-1.5 kg / m < 3 > of synthetic fiber, 30-80 kg / m < 3 > of steel fiber, 130-160 kg / m < 3 > of water, 25-40 kg / m < 3 > of expanding agent and 4.5-7.5 kg / m < 3 > of multi-branched temperature-sensitive polycarboxylic acid superplasticizer. The multi-branched temperature-sensitive polycarboxylic acid high-efficiency water reducing agent is prepared by co-polymerizing a multi-branched chain transfer agent, a temperature-sensitive polymerizable monomer, acrylic acid and polyethylene glycol monomethyl ether acrylate, and has the advantages of excellent dispersion effect, high-temperature slump retaining property, few pores of an electric pole, high compactness and better tensile and anti-cracking properties.

The invention discloses a real-time detection method, medium and equipment for slump of concrete in a mixer truck tank. High-precision dynamic detection is realized by fusing visual and inertial measurement data. The method specifically comprises the following steps: collecting a video stream of concrete in a stirring tank and IMU attitude data; detecting at least three preset positioning mark points on the inner side of the tank opening, constructing an affine transformation matrix based on the pixel displacement of the mark points between adjacent frames, and performing motion compensation redirection on the video frames; dynamically delimiting a concrete surface region of interest in the stable image, and extracting surface ripple wavelength, aggregate settlement gradient and flow state motion vector characteristics; and inputting the video features into a trained neural network model to output a preliminary slump value, dynamically calibrating in combination with the motion state of the tank body, and finally outputting a slump value which is subjected to smooth processing and is marked with confidence. The method solves the problems that a traditional method is greatly interfered by shaking of the tank body and measurement lags behind, and is suitable for real-time quality monitoring in the running process of the mixer truck.

The invention belongs to the technical field of concrete, and particularly relates to a mixed UHPC admixture. The mixed UHPC admixture is reasonable in design, the modified water reducing agent takes the polycarboxylic acid water reducing agent as a main body substance, and the synergistic effect of hydrophilic groups carboxyl and amino, hydrophobic groups ester groups and polyether side chains contained in the polycarboxylic acid water reducing agent is beneficial to wetting and adsorption of concrete and concrete particle surfaces and relative lubrication of aggregate particles; by quantitatively doping the defoaming agent and the modified lignin, a proper amount of air can be entrained in the concrete, the workability of the concrete is improved, the viscosity of the concrete is reduced, and the slump retaining performance of the concrete is improved by assisting the slump retaining agent. The modified water reducing agent, the slump retaining agent and the defoaming agent have a synergistic effect, the modified water reducing agent reduces the water-binder ratio and improves the flowability, the slump retaining agent keeps the flowability stable, the defoaming agent ensures the microstructure compactness by eliminating bubbles, and finally the comprehensive performance of high strength, high toughness and high durability of UHPC is achieved.

The invention discloses a ship lock water delivery system work overhaul valve well gate groove one-time forming method, and relates to the technical field of inland river ship lock construction. Comprising the following steps: step 1, mounting a working overhaul valve well bottom sill water stop mechanism; step 2, installing a built-in truss embedded part in the work overhaul valve well; 3, well bottom high-slump second-grade low-heat concrete pouring of the work overhaul valve is carried out; 4, a lintel water stop mechanism in the work overhaul valve well is installed; 5, a truss mechanism is installed in the work overhaul valve well; 6, a door groove embedded part of the work overhaul valve well is installed; 7, high-slump second-level low-heat concrete pouring is conducted on the work overhaul valve well and the lock head body; and 8, the step 5 to the step 7 are cycled until the concrete is poured to the designed crest elevation of the lock head. According to the invention, one-step forming of the work overhaul valve well gate groove of the water delivery system is realized, and the problems of narrow internal space of the overhaul valve well, high secondary concrete construction difficulty and low construction efficiency are solved.

The invention discloses an intelligent vibrating construction method for visual self-repairing dense waterproof concrete. The intelligent vibrating construction method comprises the following steps: step 1, preparing the self-repairing dense waterproof concrete; step 2, manufacturing a three-dimensional model of a to-be-poured unit; and thirdly, the three-dimensional model of the unit to be poured is uploaded to an intelligent vibrating system. And fourthly, the intelligent concrete vibrating system is installed and inspected. And fifthly, self-repairing compact waterproof concrete is poured. And 6, carrying out spot test on the slump of the self-repairing compact waterproof concrete. And 7, vibrating the self-repairing compact waterproof concrete. And 8, when vibration lacking and vibration missing areas appear in the concrete vibration process, graphical display appears on a construction site intelligent large screen connected with the main control box, workers are guided to supplement vibration in time, quality defects are repaired, and construction is finished. The technical problems that a traditional construction method cannot comprehensively display the vibrating process in real time, and the vibrating quality cannot be effectively controlled due to the fact that the vibrating quality is limited by the technical level and experience of constructors are solved.

The invention discloses green cast-in-place high-strength lightweight foam concrete, and belongs to the technical field of new materials. The concrete is prepared from the following components in parts by weight: 30 to 50 parts of cement, 20 to 40 parts of light foam aggregate, 15 to 30 parts of fine aggregate, 15 to 25 parts of water, 0.1 to 1.0 part of foaming agent, 5 to 15 parts of mineral admixture and 0.1 to 2 parts of chemical admixture. The chemical additive contains a high-efficiency water reducing agent, a modified retarder and an air entraining agent in a weight ratio of (5-7): (2-3): (1-2). Through the innovatively designed modified retarder, nano-modified light foam aggregate and fine aggregate, and by optimizing the mix proportion and the preparation process, the mechanical properties (compressive strength of 20.5-24.5 MPa), durability (water absorption of 3.4-4.0%) and construction performance (slump of 162-175 mm) are remarkably improved. And the carbon footprint is reduced by utilizing industrial byproducts, so that green environmental protection and economy are realized. The method is suitable for cast-in-place high-strength light structures, has the advantages of light weight, high strength, durability and construction convenience, and provides a sustainable solution for modern engineering.

The invention discloses a red clay excavation side slope collapse emergency disposal and treatment construction method, and belongs to the technical field of geological disaster prevention and side slope engineering. According to the method, through six-step integrated construction of monitoring, closing, reinforcing, back pressing, structure and slope protection, rapid emergency rescue and long-acting treatment of red clay slope collapse are achieved. The method has the advantages of being rapid in construction, small in traffic influence, low in cost, lasting in treatment effect and the like, and is suitable for comprehensive treatment of red clay slope slump in projects such as highways and railways.

A coal-based solid waste regenerated aggregate shotcrete and a preparation method thereof, comprising cementitious material 100 parts, coarse aggregate 150-200 parts, fine aggregate 150-200 parts, polycarboxylate superplasticizer 2-4 parts, anti-adsorption agent 0.5-1.5 parts, water 35-60 parts, and defoaming agent 0.1-0.3 parts. The cementitious material is composed of cement and waste desulfurization gypsum; the coarse and fine aggregates are all coal gangue or gasification slag; the polycarboxylate superplasticizer is a slow-release polycarboxylate superplasticizer containing phosphate ester groups in the side chain; and the anti-adsorption agent is bentonite modified by a silane coupling agent. The modified bentonite anti-adsorption agent preferentially blocks the porous surface adsorption sites of the coal-based solid waste aggregate, and the slow-release polycarboxylate superplasticizer continuously provides dispersion force, effectively reduces the invalid consumption of the superplasticizer, significantly reduces the 1h slump loss rate of the concrete, reduces the rebound rate of the shotcrete construction to below 15%, and the total solid waste content is above 70%, realizing large-scale collaborative utilization of coal-based solid waste and waste desulfurization gypsum.