1445 results about "Construction waste" patented technology

The invention discloses a material supply and resource recovery collaborative scheduling method and system, and belongs to the technical field of logistics scheduling, and the method comprises the steps: obtaining a material supply instruction and a garbage recovery instruction, carrying out the image recognition of a building garbage picture, obtaining the garbage attribute, and generating a demand instruction library; the method comprises the following steps: establishing a feature knowledge base, setting a spatial clustering method, carrying out spatial clustering and time window screening, carrying out geographic coordinate analysis and time sequence sorting on material demand points and recovery points, generating an initial task pool, setting a loading matching method, and generating a material supply and recovery loading schematic diagram according to building material and garbage attributes; a circulation path is planned, a path planning method is set, an ant colony algorithm is used for initial path planning, a monitoring feedback method is set, data are returned in real time, the running state of the vehicle is monitored, and an alarm is given out immediately once abnormity is found; and the sorted and regenerated aggregate data is synchronized to a building material database, a resource feedback method is set, a reverse transportation task is identified, and a material supply and resource recovery closed loop is formed.

The invention discloses high-performance fluid-state solidified soil for backfill based on composite ardealite of building residue soil, which is prepared by taking the building residue soil as a core raw material, taking a compound of a polycarboxylic acid water reducer and hydroxypropyl methyl cellulose as a fluidization regulator, and mixing the fluidization regulator and the building residue soil to prepare the high-performance fluid-state solidified soil for backfill. Superfine slag powder, fly ash, nano silicon dioxide, metakaolin and ardealite are used as curing agents, so that the fluid-state solidified soil with strong performance is obtained. Through the synergistic effect of all the components and innovative processes such as liquid nitrogen low-temperature grinding, nano material compounding and a segmented vacuum stirring process, the effect that the ultrahigh strength of the construction waste soil reaches 7.5 MPa within 14 days is achieved for the first time and is improved by 40% or above compared with that of conventional solidified soil, and the industrial problem that traditional waste soil is insufficient in solidification strength is solved; and collaborative optimization of strength and fluidity is realized. Meanwhile, efficient resource utilization of the construction waste is achieved, land occupation and environmental pollution caused by muck landfill are greatly reduced, and the requirement for green and sustainable development is met.

The invention discloses a construction waste tracking method based on a graph neural network. The method comprises the following steps: constructing preprocessed construction waste transportation multi-source data; constructing a construction waste transportation network weighted heterogeneous graph based on the preprocessed construction waste transportation multi-source data; a GraphSAGE node embedding vector is generated and updated; outputting an interruption point event consisting of the interruption position, the occurrence moment and the state element; extracting a local sub-graph with a fixed hop count from the weighted heterogeneous graph of the construction waste transportation network; a detour candidate path set with priority is obtained, and a self-healing tracking path with the highest score is selected; and forming an updated construction waste transport path tracking expected path, marking a potential illegal dumping risk node by combining compliance risk information in a GraphSAGE node embedding vector, and outputting a construction waste path tracking result. According to the method, detour path optimization sorting and high-risk path elimination are realized, and path reconstruction is enabled to better meet urban transportation scheduling and supervision requirements.

The invention relates to the technical field of building construction, in particular to a foundation construction material and a dynamic compaction construction method.The construction method comprises the following steps that S1, an early-stage preparation stage is conducted; s2, a trial compaction and parameter optimization stage; s3, a main body construction stage; s4, a multi-field coupling maintenance stage; s5, a foundation quality detection stage; and S6, an acceptance and filing stage. Through intelligent sensing and dynamic parameter regulation and control, self-adaptive optimization of the tamping process is achieved, over-tamping or under-tamping is avoided, and the foundation bearing capacity is improved by 15%-20%; the layered filling design of the gradient material is matched with different depth mechanical requirements, the grading continuity coefficient is larger than or equal to 0.5, and the compactness of the pier body is improved by 25% or above; an innovative Q value evaluation formula integrates multi-dimensional parameters, the detection accuracy rate reaches 90% or above, and the rework rate is remarkably reduced; the maintenance period is shortened to 7 days through the multi-field coupling maintenance technology, and the construction efficiency is improved by 50%; and the material cost is reduced by 30% by recycling the construction waste, and the method has economical efficiency and environmental protection performance and is suitable for various complex foundation treatment sites.

The invention relates to the field of flow-state solidified soil, and discloses flow-state solidified soil prepared from construction waste, preparation equipment and a preparation method. The pre-dehydration module is used for controlling the water content of discharged materials to be less than or equal to 14%; the system further comprises a main drying system, an auxiliary material adding device, a water adding device and mixing equipment. The main drying system comprises a high-temperature drying area, a high-temperature buffering area and a heat preservation discharging area which are arranged in the vertical direction, materials treated by the pre-dehydration module are lifted into the high-temperature drying area through lifting equipment, the main drying system comprises at least two sets of material conveying belts, and a plurality of hot air openings are evenly formed in the top of the high-temperature drying area; an inlet of the hot air pipe is communicated with an air cavity heated by a heat source; a recovery channel communicating with the portion, close to the bottom, of the heat preservation discharging area is arranged on one side of the main drying system, and an obliquely-arranged dust baffle is arranged in the recovery channel. According to the invention, the problems of fluctuation of construction waste sources and large change of material moisture content in the prior art are solved.

A method for intelligent sorting, detection, and recognition of construction waste. Construction waste images are collected as the original image sample set in the construction waste sorting site, the SRGAN algorithm is improved to preprocess the construction waste dataset images, and the preprocessed dataset is labeled and divided into train, validation, and test sets at an 8:1:1 ratio. An improved YOLOv8 detection and recognition model which introduces receptive field attention convolutions and multidimensional collaborative attention modules in the feature extraction part of the backbone is applied. This method for intelligent sorting, detection, and recognition of construction waste replaces manual labor with the construction waste intelligent sorting, detection and recognition method, solves the problem of loss of construction waste image features due to vibration of the conveyor belt and mutual occlusion of construction waste during the intelligent sorting process.

The embodiment of the invention provides a method and system for achieving intelligent sorting of construction waste based on computer vision. The method is applied to the computer vision technology field. The method comprises the steps of material conveying and primary induction, multi-modal data acquisition and synchronization, multi-modal data preprocessing and correction, robust target recognition and classification, high-precision three-dimensional pose estimation and grabbing point planning, intelligent sorting decision and mechanical arm control, sorting execution and state monitoring and adaptive learning and optimization. In this way, by introducing multi-modal sensing, deep learning and three-dimensional geometry fusion recognition, high-precision three-dimensional pose estimation and a self-adaptive control and feedback optimization mechanism, the automation level, efficiency and precision of construction waste sorting and the stability of the system in a complex environment are remarkably improved.

The invention provides a building solid waste self-adaptive sorting method and system based on multi-modal vector retrieval. The method comprises the steps that original data of building solid waste are collected; extracting multiple data features from the original data; fusing the plurality of data features to obtain a fused feature vector; performing similarity matching on the fused feature vector database in a vector retrieval mode, and confirming solid waste material classification and a corresponding sorting decision instruction; and based on the sorting decision instruction, building solid waste sorting is executed. The problems that a traditional sorting technology is low in precision and poor in adaptability are solved. The system can be widely applied to the fields of construction waste recovery, resourceful treatment and the like, and has remarkable economic and environmental benefits.

The invention provides a recovery device for building waste plastic building materials, and relates to the field of waste recovery devices.The recovery device comprises a feeding mechanism, a crushing mechanism, a separating mechanism and a melting granulation mechanism, and further comprises a crushing system and an electric control system; according to the crushing system, a primary crushing unit is driven by a first variable frequency motor; the secondary crushing unit is arranged at the discharging end of the primary crushing unit and is driven by a second variable frequency motor; the screening unit is arranged below the secondary crushing unit; wherein the electric control system is electrically connected with the first variable-frequency motor and the second variable-frequency motor and used for independently controlling the rotating speeds of the first variable-frequency motor and the second variable-frequency motor so as to drive the primary crushing unit and the secondary crushing unit to do differential relative motion, and the screening unit is used for returning substandard materials to the primary crushing unit to be crushed again. Multi-stage differential crushing and intelligent closed-loop control are adopted, airflow separation and magnetic separation impurity removal are combined, efficient and energy-saving production is achieved through segmented melting and plasticizing, and the treatment efficiency and the purity of a finished product are improved through an automatic system.

The invention relates to the technical field of construction waste recycling, in particular to an in-situ recycling method and system for municipal construction construction waste, and the method comprises the following steps: obtaining material characteristic data of to-be-treated construction waste, corresponding treatment process parameters are matched based on a pre-constructed recycled aggregate grading model, a target regeneration scheme is confirmed, a movable in-situ treatment system is initialized based on the target regeneration scheme, and the construction waste is processed into recycled aggregates of various specifications through feeding, crushing, sorting and screening units; a quality detection point is arranged at a discharging port of the screening unit to collect aggregate quality data, if the aggregate quality data meet the preset recycled aggregate standard, the aggregate quality data are conveyed to a corresponding application station, otherwise, technological parameters are adjusted and returned for retreatment, and the system is closed when the preset treatment capacity is reached. According to the invention, on-site treatment and resource utilization of the construction waste are realized, the quality of the recycled aggregate is ensured through intelligent quality control, and the resource utilization efficiency is improved.

The utility model provides a construction waste treatment and regeneration device which comprises a smashing assembly and a regeneration treatment assembly, the regeneration treatment assembly is installed on the surface of the front side of the smashing assembly, the smashing assembly comprises a bottom plate and a smashing piece, the smashing piece is installed on the surface of the upper side of the bottom plate, and a discharging pipe is installed at a discharging port of the smashing piece. Compared with the prior art, the building waste recycling device has the following beneficial effects that by arranging the recycling treatment assembly, when the building waste recycling device is used, the screening part is arranged at the upper part in the treatment box, and after entering the treatment box through the discharge pipe, crushed building waste firstly passes through the screening part and then passes through the screening part; the position can effectively intercept particles which do not meet the size requirement, it is ensured that only construction waste particles with the proper size enter the discharging plate, meanwhile, airflow generated by the air blower can blow up light impurities in the construction waste particles, and the light impurities are separated from heavy construction waste particles.

The invention relates to a strengthening treatment and automatic separation system for construction waste recycled aggregate, and innovatively provides a technical route of'multistage crushing, magnetic separation, winnowing, flotation linkage and aggregate strengthening 'aiming at the core problems of more impurities and low strength of the recycled aggregate. The system comprises a pretreatment module (for removing large impurities), a multi-stage crushing module (for controlling grain shapes), a linkage sorting module (for removing plastics through winnowing, removing wood chips through flotation and carrying out photoelectric precise sorting), an aggregate strengthening module (for improving strength through microwave activation and nanometer coating) and an intelligent control center. By establishing a magnetic separation efficiency model, a grain shape optimization model and a strength prediction algorithm, the aggregate purity is greater than 98% (XRF detection), and the compressive strength is improved by 40% (ISO 679 verification); the energy consumption in the sorting link is reduced by 30%, and the reinforced aggregate can replace natural aggregate to prepare C40 concrete. The bottleneck of high-value utilization of the construction waste is broken through, and circular economy development is promoted.

The invention discloses a construction waste treatment feeding control method and system, and the method comprises the following steps: carrying out the real-time material characteristic collection of entering construction waste, so as to obtain the material composition data, particle size distribution data and water content data of the construction waste; a construction waste feeding initial characteristic data set is generated based on the material composition data, the particle size distribution data and the water content data and transmitted to the central control unit for comparison, and a material-process matching scheme is generated; the control module is used for sending a control instruction based on a material-process matching scheme, realizing dynamic feeding adjustment parameter control of the construction waste, acquiring operation state data of the processing module in real time, and generating a feeding-operation state data set; and feeding back the feeding-operation state data set to the central control unit for dynamic correction, and adjusting operation parameters of a feeding adjustment execution mechanism to form a corresponding closed-loop feeding control flow. The feeding control efficiency in the construction waste treatment process can be improved.

The invention specifically discloses an integrated data transmission method and system for Internet of Things equipment of a slag car, and relates to the technical field of Internet of Vehicles communication. The method comprises the following steps: S1, synchronously acquiring data of all sensors by using a hardware timer, and ensuring that the acquisition time is consistent; s2, performing deduplication, Kalman filtering GPS drift removal and data verification on the acquired data; s3, packaging data by adopting an optimization protocol, simplifying a JT / T809 protocol 22-byte message header into 8-bytes, compressing the data through variable-length coding and the like, and performing batch transmission in combination with a buffer pool; and S4, establishing TCP long connection by using an optimization strategy, wherein the TCP long connection comprises multiplexing connection, combining small packets and confirming transmission by using a sliding window mechanism. According to the muck truck Internet of Things equipment integrated data transmission method and system, the hardware, transmission and maintenance cost is greatly reduced, the transmission efficiency and reliability are improved, and the muck truck Internet of Things equipment integrated data transmission method and system are suitable for unified supervision of Beidou positioning, lifting and closed states of muck trucks.

The cantilever type retaining wall comprises a plurality of waste L-shaped beams, the sides, with flanges, of the waste L-shaped beams face a mountain, the bottoms of the waste L-shaped beams are embedded into the position below a foundation by a set depth, and the space between the waste L-shaped beams and the mountain is filled and tamped through lateral filling soil; the adjacent ends of all the waste L-shaped beams are fixedly connected through connecting transverse partition plates to form a retaining wall, and settlement joints are arranged on the retaining wall at equal intervals. The invention further discloses a construction method of the cantilever retaining wall for recycling the waste T-shaped beams. According to the method, the T-beam of the abandoned bridge can be reused, pollution of construction waste to the environment is reduced, the retaining wall built by the abandoned T-beam serves as a structure for supporting a natural or artificial slope mountain body to be free of collapse so as to keep the stability of a soil body, and great economic benefits and ecological benefits are achieved.

The invention discloses a preparation method and application of a compaction-free solid waste polymerization roadbed filler constructed by adopting a dump filling method, belongs to the field of high-value and large-scale utilization of solid waste building materials, and particularly relates to a preparation method and a construction process of the compaction-free solid waste polymerization roadbed filler (comprising construction waste and tunnel excavation fragments) constructed by adopting the dump filling method. Large-particle-size building waste fragments and an early-strength solid waste-based cementing material are polymerized through a throwing and filling method, compaction-free and vibration-free construction is achieved through the self-leveling and self-compacting characteristics of cementing material slurry, vertical layered pouring can be achieved, and high-valued and large-scale utilization of solid waste and engineering economy are both considered. According to the present invention, the self-leveling and self-compacting characteristics are provided, the characteristics of the slurry are obtained through the preparation method, the ratio design in the preparation method is important, and the experiment support is provided, such that the ratio design and the experiment process and data are required;

The utility model discloses construction waste turnover equipment for high-rise building construction, which relates to the technical field of high-rise waste turnover and comprises a waste pipeline. Construction waste is put in from the interior of the feeding hopper, the construction waste slides to the supporting plate on the inner wall of the waste pipeline, then the servo motor is started, the supporting plate drives the construction waste at the top end to descend synchronously, and through descending of the supporting plate, huge impact force generated when the construction waste falls from a high layer can be effectively avoided; when a limiting groove in a fixing shaft is embedded into a limiting block, a supporting plate is rotationally and obliquely opened through a circular shaft under the gravity of the construction waste, then the construction waste better falls into a material receiving vehicle from a waste pipeline, and the function of transferring the high-rise construction waste is achieved; and a construction site can be kept clean and orderly, and construction obstacles caused by garbage accumulation are reduced, so that the construction progress is accelerated, and the overall construction efficiency is improved.

The invention discloses a geopolymer-based recycled fine aggregate shield synchronous grouting material and a preparation method thereof. The grouting material is composed of a cementing material, an alkali activator, aggregate, a water reducing agent, a retarder and water, and the cementing material is a geopolymer precursor and is composed of fly ash, slag and metakaolin; the aggregate is composed of river sand and recycled fine aggregate. By optimizing the proportion and the preparation process, the material has the characteristics of excellent flowability, controllable setting time, high early strength, good impermeability, good durability and the like, and is suitable for synchronous grouting of shield tunnels in water-rich sand layers, high-water-pressure stratums or corrosion stratums. The invention also provides two optimization methods which are respectively based on a response surface method and a BP neural network combined genetic algorithm to realize multi-objective optimization of slurry performance. According to the material, dependence on traditional cement and gravel resources is remarkably reduced, energy consumption and carbon emission are reduced, high-added-value resource utilization of industrial solid waste and construction waste is achieved, and the material conforms to the development direction of green low-carbon building materials.

The utility model relates to the technical field of building material test piece manufacturing equipment, in particular to a test piece batching tool for a proportioning test of construction waste roadbed filling soil, which comprises a frame body, a front cover, a partition plate, an unloading drawing plate, a drawing plate film and a film roller, wherein the front cover is mounted at one end of the frame body, the unloading drawing plate is mounted at the lower part of the frame body, the frame body, the front cover and the unloading drawing plate form a batching box with an upper opening, and the partition plate is mounted in the frame body and used for partitioning the space in the batching box; the material supply proportion is controlled through the partition plate, weighing operation is converted into measurement operation, the operation process is simplified, meanwhile, the installation angle and position of the partition plate are changed, continuous change of the proportion of a single test piece can be achieved, the function of testing indexes of test pieces with different proportions at different positions of the same test piece is achieved, the manufacturing amount of the test pieces is reduced, and the cost is reduced. And the efficiency of related work is improved.

The invention discloses an intelligent construction waste classification method based on deep learning. The method comprises the steps of obtaining a standardized construction waste operation site image data set; generating a global candidate image region set based on the standardized construction waste operation site image data set; forming a node feature vector set; obtaining a construction waste heterogeneous object-relation graph structure containing node type labels and edge type labels; generating a gating coefficient and fused multi-scale feature representation; generating a sub-graph level representation; generating an edge consistency constraint signal based on a boundary clue output by the local feature extraction branch and a pixel mask of the global candidate image region set; and according to the updated node representation, the sub-graph-level representation and the edge consistency constraint signal, defining a construction waste category label, an instance contour and a segmentation mask. According to the method, the instance-level and material-level segmentation precision of the construction waste target under the scenes of stacking, shielding, similar inter-class appearance and large intra-class difference is remarkably improved.

The invention discloses a soil stabilizer, environment-friendly acid-resistant early-strength type flow-state stabilized soil and application, and particularly discloses a soil stabilizer which comprises the following components in parts by weight: 5-10 parts of cement, 3-12 parts of modified lithium slag powder, 2-8 parts of regenerated micro powder, 2-8 parts of water glass and 40-50 parts of water. The invention further discloses environment-friendly anti-acid early-strength type fluid-state solidified soil containing the soil solidifying agent, and the environment-friendly anti-acid early-strength type fluid-state solidified soil further comprises 3-10 parts of fly ash and 175-195 parts of soil. The invention further discloses application of the soil stabilizer in foundation preparation or foundation pit backfilling. The problems that in the prior art, industrial by-products such as lithium slag and construction waste pollute the environment, and acid soil cannot serve as a solidified soil raw material are solved. The lithium slag and the regenerated micro powder are subjected to resource utilization, so that the acid resistance of the solidified soil can be improved, and meanwhile, the early strength of the solidified soil is greatly improved.

The invention relates to the technical field of modern building construction, in particular to a construction waste secondary utilization design scheme generation method and system. The method comprises the following steps: acquiring image data of a construction waste area, and identifying physical characteristics of construction waste according to the image data of the construction waste area; in combination with the engineering BIM model and the engineering progress, extracting structural features of engineering later-stage components; generating a feasible secondary utilization design scheme according to the physical characteristics of the construction waste and the structural characteristics of the engineering later-stage component; and constructing a waste secondary utilization scheme evaluation model, and evaluating the secondary utilization design scheme by using the waste secondary utilization scheme evaluation model to obtain an optimal secondary utilization design scheme. According to the method, the secondary utilization scheme is automatically generated by identifying the waste, and the problems that in the existing construction waste secondary utilization process, the recycling rate is low, a systematic design scheme generation method is lacked, and the scheme matching degree and feasibility are poor are solved.

The invention discloses a construction waste resource recycled concrete preparation process. The process comprises the following steps: step 1, dismantling and primary sorting; step 2, pretreatment and primary crushing; step 3, secondary crushing and shaping; step 4, screening and grading; step 5, deep impurity removal and purification; step 6, strengthening the aggregate; and step 7, storing a finished product. Step 8, designing and adjusting a mix proportion; step 9, proportioning and stirring; 10, transporting, pouring and maintaining; the construction waste can be efficiently treated and utilized in an environment-friendly mode through multiple steps, and the construction waste is converted into the recycled concrete with the practical application value. According to the present invention, the accurate mix proportion of the recycled concrete preparation is achieved through the accurate mix proportion design and adjustment and the scientific batching and stirring process, such that the quality stability of the recycled concrete is improved, the solid foundation is established for the wide application of the recycled concrete in various constructional engineering, and the excellent physical and mechanical properties of the recycled concrete are ensured.

The utility model discloses a building waste secondary crushing device, and belongs to the field of building waste crushing. Comprising a first crusher, a second crusher, a first conveying part and a second conveying part, the first crusher is used for bearing building waste to be crushed; the first conveying part is arranged between the first crusher and the second crusher, one part of the first conveying part is connected with a discharge port of the first crusher, and the other part of the first conveying part is connected with a feed port of the second crusher; the second conveying part is connected with a discharge hole of the second crusher and comprises a first crusher, the second crusher, a first conveying part and a second conveying part; the first crusher is used for bearing building waste to be crushed; the first conveying piece is arranged between the first crusher and the second crusher, and one part of the first conveying piece is connected with a discharge port of the first crusher.

The invention relates to the technical field of recycled aggregate building block preparation, and discloses a method for improving the compressive strength of a building block based on recycled aggregate particle size gradient control, and the method comprises the following steps: screening recycled aggregate generated by crushing construction waste into coarse, medium and fine three levels; extracting a hole topology network of the building block three-dimensional model, and generating a hole density grade according to node distribution characteristics; comparing the hole density with the thickness of the bearing area, and activating the dense gradient distribution rule of the skeleton; monitoring a coarse-medium-fine aggregate grading continuity index in real time, and dynamically adjusting the proportion of the medium aggregate to fill gaps to generate an optimal grading scheme; the materials are stirred according to the scheme and then injected into a mold, and vibration strength is adjusted based on hole density grade for forming. The compressive strength of the recycled aggregate building block is remarkably improved through scientific regulation and control of the particle size gradient and directional optimization of the structural characteristics.

The invention discloses a method for preparing regenerated planting soil from muck. The method comprises the following steps of feeding and screening, weighing and metering, mixed feeding, primary crushing and mixing, secondary crushing and mixing and finished product discharging. The equipment for preparing the regenerated planting soil from the muck comprises a feeding device, a screening device, a belt conveyor assembly with a scale, a primary crushing and mixing device, a secondary crushing and mixing device and a finished product belt conveyor, the feeding device conveys dry soil, wet soil and humus soil into the screening device, and the screening device conveys the screened dry soil and wet soil to the belt conveyor assembly with the scale; the primary crushing and mixing device receives dry soil, wet soil and humus soil, the dry soil, the wet soil and the humus soil enter the secondary crushing and mixing device after being subjected to primary crushing and mixing, finished planting soil is obtained through crushing and mixing, and the finished planting soil belt conveyor is used for receiving and transporting the finished planting soil output by the secondary crushing and mixing device. The resource utilization rate of the muck is increased, and the stacking of the muck and the pollution to the environment are reduced.

The application discloses a kind of construction waste recycling and recycling equipment, it is related to waste processing field, including base and installation cover, the installation cover is arranged above the base, the inside of the installation cover is provided with the filter residue cylinder of horizontal type, and the left and right ends of filter residue cylinder are open structure design, and the left side of filter residue cylinder is provided with feeding mechanism, garbage is transported from outside to the inside of filter residue cylinder, the outside of the filter residue cylinder is provided with first drive mechanism.The construction waste recycling and recycling equipment can be sorted by the setting of filter residue cylinder The primary processing of garbage, separate the small particle size garbage such as waste residue in the garbage, so that it is collected alone, and the filter residue cylinder is horizontal structure, screening is carried out by rotating, it is not easy to block, and garbage can be transported by cooperating with spiral conveying plate during screening, and the precipitate and floating matter in the garbage are separated by cooperating with liquid separation chamber, so that different properties of material can be quickly separated.

The invention discloses a method for removing old mortar on the surface of construction waste coarse aggregate by a shallow grinding process of a ball mill. The method comprises the following steps: selecting the construction waste coarse aggregate which is subjected to primary planing milling and screening and is attached with the old mortar, wherein the particle size of the construction waste coarse aggregate exceeds 5mm; the surface depression size is counted through the visual identification technology, the depression size D80 with the proportion exceeding 80% serves as the maximum particle size of the grinding medium, and the grinding medium continuously graded downwards is selected; the shallow grinding rotating speed is set within the safety limit rotating speed; and putting the grinding medium and the to-be-treated raw materials into a ball mill, carrying out shallow grinding treatment, and removing the old mortar attached to the construction waste coarse aggregate to prepare the recycled aggregate. According to the method, a shallow grinding process of the ball mill is combined with precise model selection of the magnetic grinding medium, targeted treatment is realized by depending on the sunken size of the aggregate, old mortar on the surface and in the sunken position of the recycled aggregate is efficiently removed, excessive grinding can be avoided, the retention rate of aggregate edges and corners is remarkably increased, and the interlocking performance and the overall quality of the aggregate are guaranteed.

The invention relates to the technical field of solid waste treatment, in particular to a zeolite-based porous adsorption material and a preparation method thereof. The zeolite-based porous adsorption material is prepared from light particles and alkali liquor through a zeolitization reaction, and the light particles are prepared from the following raw materials in parts by mass: 30-60 parts of regenerated micro powder, 5-15 parts of red mud, 5-15 parts of glass powder, 10-40 parts of solid waste powder and 5-15 parts of a foaming agent; the regenerated micro powder is cement-based construction waste regenerated micro powder, and the solid waste powder comprises one or more of fly ash, coal gangue and fine coal gasification slag; the foaming agent comprises charcoal and / or rice hull ash. The multi-solid-waste zeolite-based porous adsorption light particles with excellent performance and good economic and environment-friendly benefits are prepared by taking the construction waste regenerated micro powder as a main raw material and synergistically using various solid wastes and the foaming agent.

The application relates to the field of building waste resource utilization, and discloses a high-strength baking-free brick prepared from building waste and a preparation method thereof, wherein the raw materials include, in parts by weight, building waste aggregate 60-70 parts, cement 20-30 parts, polyurea resin 6-10 parts, water reducing agent 1-5 parts, and water 5-10 parts; the polyurea resin comprises A component and B component in a mass ratio of 1-3:1, the A component is a secondary amine component, and the B component is an isocyanate curing agent. The baking-free brick prepared by taking the building waste as the aggregate, the cement as the cementing material and adding the polyurea resin as the reinforcing agent has excellent mechanical properties and water resistance, and the building waste can be reduced and utilized as resources.