41 results about "Aggregate distribution" patented technology

The invention relates to a construction quality uniformity detection and evaluation method of an asphalt pavement. The construction quality uniformity detection and evaluation method comprises the following steps: acquiring a texture image of a surface of a detected road section by adopting an image acquisition device and drilling a density representative core sample; processing the image on the surface of a road and a CT (Computerized Tomography) image of the core sample so as to calculate a pavement macrostructure width index K, a coarse aggregate horizontal non-uniform coefficient DH and vertical non-uniform coefficients DV1 and DV2; evaluating aggregate distribution uniformity of the pavement from the pavement and the inner part of a structure; then, testing densities of different regions of the pavement by adopting a non-nuclear density gauge PQI; calculating density repeatability standard deviations Sr and SR in detection channels and between the detection channels, and density consistency statistic values k and h in the detection channels and between the detection channels; calculating a cross section gap quantity uniformity coefficient UCN and a cross section gap porosity uniformity coefficient UCR of the CT image of the core sample; evaluating compaction quality distribution uniformity of the asphalt pavement from density and porosity distribution conditions. By adopting the method provided by the invention, the problem that a detection index for the construction quality uniformity of the asphalt pavement is lacked in a pavement construction inspection and acceptance process at present is solved.

A computer-implemented platform may comprise hardware and software configured to allocate crowdsourced resources. An aggregate effort of a plurality of users may be efficiently directed toward a task by allocating resources according to an aggregate distribution of input from the users. The magnitude of the aggregate input of users may be manifest graphically, in a manner that emphasizes information having high priority. A map may include a representation of network comprising a plurality of nodes connected by connections. A node may include a problem and/or a solution, and a connection may describe a relationship between at least two nodes. Aggregate input may be used to revise the map, and analysis of the revised map may yield a resource allocation that directs users toward higher value effort.

The invention discloses a joint roughness coefficient size effect sampling representativeness evaluation method. The method comprises the following steps: selecting a typical rock structural plane for serving as a research object of the roughness coefficient size effect, measuring a structural plane contour line with a maximum-size-effect research size in an oriented way through a profilograph, extracting the surface coordinate information of a series of size structural plane samples according to a field large-scale rock structural plane surface form element measuring result, calculating the roughness coefficients of the series of samples, and performing probability density function fitting on the overall distribution of standard size sample data; building a joint roughness coefficient size effect probability density function model; calculating a series scale joint roughness coefficient probability density function maximum value according to a maximum likelihood estimation principle; and determining the roughness coefficient representative value of each sample through relative deviation analysis of the roughness coefficient of each structural plane sample and a representative evaluation index. The quantitative evaluation problem of the joint roughness coefficient size effect sample representativeness is solved, and the reliability is high.

The invention provides a method for analyzing a histopathologic image and a system thereof. The method comprises the steps that the central position of a cell nucleus is detected; then the graph structure features of the cell nucleus distribution are extracted; one or multiple graph structure features is/are calculated so that the global features of the cell nucleus distribution are obtained; the local features are directly extracted near the position of the cell nucleus; the global feature and the local features are fused so as to obtain the fused features; and the fused features are classified by using a classifier. The system comprises a high-resolution pathologic section scanner which scans the dyed histopathologic section to a computer so as to obtain a high-resolution digital histopathologic image; and the computer which performs the steps. The central position of the cell nucleus can be rapidly, accurately and automatically detected so that redundant information can be reduced, the overall distribution situation of the position of the cell nucleus and the detailed situation near the cell nucleus can be both considered, pathologic grading of the section can be accurately and rapidly realized and thus processing and transmission are rapid and resource consumption is low.

The invention discloses a method for evaluating asphalt mixture aggregate distribution state, and the method comprises the following steps: firstly acquiring cross section image of on-site core sample or indoor moulding cylindrical test piece using industrial CT machine or digital camera, and converting images into black white images with BMP format; obtaining information of each aggregate particle in the asphalt mixture section image from the black white image; quantitatively evaluating the mixture aggregate distribution state in the three aspects of position distribution, quantity distribution and long axis azimuth of each aggregate in the mixture; representing the mixture aggregate distribution state on the direction using the mixture aggregate distribution state on a set parallel cross sections, and finally, quantitatively evaluating the asphalt mixture aggregate distribution state using the distribution state on the horizontal direction and vertical direction of the aggregates. The smaller total evaluate index of the aggregate distribution state, the better distribution state of the corresponding asphalt mixture aggregates; conversely, the worse distribution state of the asphalt mixture aggregates.

The invention discloses a temperature field analysis method of a bituminous mixture test piece on the basis of discrete element simulation, belongs to the technical field of bituminous mixture, and solves the problem that a finite element method can not accurately analyze the internal temperature field of the bituminous mixture test piece in a high-temperature environment. The temperature field analysis method comprises the following steps: firstly, forming the bituminous mixture test piece, collecting a digital image of irregular aggregate distribution, and converting the digital image into a digital test piece of a two-dimensional CAD (Computer-Aided Design) image format after the digital image is subjected to image processing; then, importing discrete element software, independently generating irregular aggregate and bituminous mortar according to the positions of aggregate blocks and the bituminous mortar, and constructing a two-dimensional test piece discrete element model; simulating a situation that the test piece is heated in the high-temperature environment, setting a boundary condition of the test piece model, the thermophysical property parameters of the aggregate and the bituminous mortar and the internal contact thermal resistance of a unit; and applying certain constant-high-temperature and room-temperature heat flow around the test piece model, recording the temperature change situations of each point in the test piece at different moments, drawing a comparison graph, and combining with a temperature field and a heat flow distribution cloud chart generated by the software to analyze the temperature field of the bituminous mixture test piece.

The invention discloses a processing method and a device for acquiring station spacing of base stations in a wireless communication network. The processing method for acquiring the station spacing of the base stations in the wireless communication network comprises the following steps: ensuring a statistical sample number N of the station spacing of the base stations in a current network subregion according to a type of the current network subregion and attribute information of distribution density of the base stations; calculating the station spacing between the base stations inside the current network subregion and other M-1 base stations according to longitude and latitude information of the base stations inside the current network subregions; selecting smallest N station spacing as a statistical sample of the station spacing of the base stations from the M-1 station spacing specific to the base stations inside the current network subregion; removing repetitive statistic samples of the station spacing of the base stations inside the current network subregion; and conducting statistical analysis of the statistical sample of the station spacing of all base stations inside a target network region according to distances, and acquiring overall distribution situation information of the station spacing of the base stations inside the target network region. The processing method and the device for acquiring the station spacing of the base stations in the wireless communication network can acquire a distribution situation of actual station spacing of the base stations inside a network region in the wireless network communication network.

The invention relates to a method for adaptively designing a space sampling scheme of geographic elements with an aggregated distribution characteristic. The method comprises the following steps of: 1, selecting a geographic element as a sampling indicator, selecting pre-sampling point data of the sampling indicator, and determining a sampling unit and a sampling frame; 2, analyzing the pre-sampling point data in the step 1, and judging whether the sampling indicator has a space aggregated distribution characteristic or not; 3, inputting the parameters and the number of categories of a particle swarm clustering algorithm, and performing clustering analysis on the pre-sampling point data by using the particle swarm clustering algorithm to obtain a clustering center serving as an initial sampling point of the sampling indicator; and 4, inputting the parameters of a binary particle swarm optimization (BPSO) algorithm, and encrypting the initial sampling point generated in the step 3 by using the BPSO algorithm to obtain the sampling scheme of the aggregated geographic elements. The method is easy to operate, high in intelligent degree and suitable for the space sampling of geographic element indicators with the aggregated distribution characteristic, the aggregation characteristic of sampling points can be effectively kept, and the representativeness and sampling accuracy of the sampling points are improved.

A microinjection apparatus of the present invention includes a needle-position polarity detecting unit that detects a position of the needle in the vertical direction at which a value of a differential aggregate distribution becomes the maximum in the situation in which a shape of the leading edge of the needle at a focal position narrows at the right. Moreover, a differential-average determining unit, based on a differential average of an image near the position detected by the needle-position polarity detecting unit, determines the lowest allowable position of the needle, which is a position at which a differential average exceeds a predetermined threshold.

The invention discloses a permeable concrete performance prediction method and system based on meso-model reconstruction. The method comprises the following steps of: acquiring a coarse aggregate sectional image; Extracting coarse aggregate distribution areas from coarse aggregate sectional images; Calculating the maximum thickness of the cladding layer; By means of morphological manipulation, adding a preset thickness of cement-based cladding layer to the coarse aggregate surface in the coarse aggregate distribution area to obtain the image after adding the cladding layer; using The three-dimensional reconstruction method to reconstruct the image after adding the cladding layer, and obtaining the three-dimensional model of permeable concrete; Extracting a pore distribution region in the image after adding a cladding layer; using the Three-dimensional reconstruction method to reconstruct the pore distribution area, and obtaining the pore three-dimensional model; prediciting The performance parameters of permeable concrete corresponding to the three-dimensional model of permeable concrete. The invention can not only realize the prediction of the pore characteristics, but also can predict the water permeability and the strength, and has high reliability.

The invention discloses a method for evaluating the uniformity of recycled asphalt. The method employs three uniformity evaluation indexes for aggregate distribution uniformity evaluation based on equal-area ring fan division, new aggregate distribution uniformity evaluation based on a particle position and area, and pore distribution uniformity evaluation based on a cross-sectional voidage. Compared with the commonly used asphalt concrete uniformity evaluation index, the method for evaluating the uniformity of recycled asphalt has the following advantage: the uniformity is evaluated from three aspects of new and old aggregates, new aggregates and pore space, so that the accuracy is high.

The invention discloses a preparation method of a mullite spherical aggregate reinforced refractory material. According to the preparation method, mullite ceramsite sand waste material is taken as a spherical aggregate, spherical ceramsite sand semi-finished products of different size grades are added as a matrix, and the mullite spherical aggregate reinforced refractory material is obtained via pressureless self-padding molding and sintering in a high temperature kiln. The spherical waste ceramsite sand is taken as the aggregate of the mullite spherical aggregate reinforced refractory material, the spherical aggregate possesses high fluidity, is beneficial for close packing and uniformity of aggregate distribution, and application performance of the mullite spherical aggregate reinforced refractory material is improved via reinforcing with the aggregate; the spherical ceramsite sand semi-finished product matrix is capable of increasing the ratio of spherical raw materials, application of a conventional powdery matrix is avoided, padding and contacting of the spherical aggregate with the spherical matrix is realized, and pressureless self-padding molding is realized. The mullite spherical aggregate reinforced refractory material is suitable to be applied in fields with high requirements on fluidity, transportation performance, air impermeability, and heat insulation properties.

The invention belongs to the technical field of engineering construction, and discloses an aggregate distribution device of a dosing machine for a stirring station. The aggregate distribution device comprises a distribution cabin, a first conveyer belt, a funnel and a dosing trolley, wherein the distribution cabin is arranged on the ground; the dosing trolley is arranged above a stock bin; the funnel is arranged above the dosing trolley; the second conveyer belt is used for conveying aggregates in the distribution cabin to the funnel; the aggregates in the funnel penetrate through the stock bin of the dosing trolley; a second conveyer belt is arranged on the dosing trolley; the conveying direction of the second conveyer belt is adjustable; the stock bin comprises at least two small stock bins; and the two small stock bins are respectively located below two ends of the second conveyer belt. The aggregates are conveyed to the funnel above the stock bin through the first conveyer belt, and then are conveyed to different small stock bins through the dosing trolley; the small stock bins are realized by switching the conveying direction of the second conveyer belt; and the phenomenon of mixed aggregates in the cabins is avoided.

The invention discloses a preparation system and method for high-performance concrete. A concrete preparation device comprises material bins, aggregate bins, powder bins and liquid tanks. A first belt conveyor is arranged below the material bins. The bottom of each material bin is provided with a discharge control opening. A second belt conveyor is arranged at upper end openings of the aggregate bins correspondingly. A third belt conveyor is arranged at lower end openings of an aggregate machine correspondingly. The discharge end of the first belt conveyor is connected with the feed end of the second belt conveyor, and movable aggregate distribution baffles are arranged on the second belt conveyor and correspond to the upper end openings of the aggregate bins. A discharge outlet of the third belt conveyor is connected with an aggregate powder homogenizer which is connected with a blender. The powder bins are connected with the aggregate powder homogenizer through a powder homogenizer and a spiral powder conveyor which are connected with the powder bins. The liquid tanks are connected with the blender through a liquid homogenizer and a conveying pipe which are connected with the liquid tanks. According to the preparation system and method for the high-performance concrete, the structure is simple, usage is convenient, the performance is high, the prepared concrete is reasonable in mixing ratio, and mixing is even.

The invention relates to the field of machines for road construction work, in particular to a hot aggregate distribution technology of an asphalt mixing station. The technology includes the steps that whether materials in a material storage bin are sufficient or not is judged according to the increasing speed of materials in a distribution balance; if a certain kind of materials are not sufficient, the number of the weighed materials is recorded, and weighing of the kind of materials which are not sufficient is ended and converted to weighing of next kind of materials automatically; and the kind of materials which are not sufficient continue to be weighed after weighing of all the materials which are sufficient is ended. When other materials are weighed, the materials in the storage bin are increased, the number required by distribution is met, distribution can be completed fast, and accordingly production efficiency is improved; and the suspension amount of the materials is maintained within a certain range, so that the situation that the weighing deviation is increased when materials are not sufficient and the suspension amount is decreased is avoided, and the weighing precision is improved.

The invention provides an aggregate distribution box system. The system comprises a hopper, a guide rail, an aggregate distribution box and a baffle; the hopper is located over the aggregate distribution box and used for containing aggregate; the aggregate distribution box is slidably installed on the guide rail and sequentially segmented into a rear portion and a front portion in the movement direction A where the aggregate distribution box moves toward a brick die; the baffle is rotatably installed on the aggregate distribution box, an acute angle is formed between the extension direction B of the baffle and the movement direction A of the aggregate distribution box, an acute angle is formed between the extension direction B of the baffle and the dropping direction C of dropping of the hopper, the baffle is used for stopping the aggregate when the aggregate drops from the hopper, so that the aggregate is dropped to the front portion of the aggregate distribution box and then slides to the rear portion of the aggregate distribution box, and the aggregate distribution box can discharge the aggregate into the brick die when moving in the movement direction A.

The invention discloses a preparation system for high-performance concrete. The preparation system comprises material bins, aggregate bins, powder bins and liquid tanks. A first belt conveyor is arranged below the material bins. A discharge control opening is formed in the bottom of each material bin. A second belt conveyor is arranged at upper end openings of the aggregate bins correspondingly. A third belt conveyor is arranged at lower end openings of an aggregate machine correspondingly. The discharge end of the first belt conveyor is connected with the feed end of the second belt conveyor, and movable aggregate distribution baffles are arranged on the second belt conveyor and correspond to the upper end openings of the aggregate bins. A discharge outlet of the third belt conveyor is connected with an aggregate powder homogenizer which is connected with a blender. The powder bins are connected with the aggregate powder homogenizer through a powder homogenizer and a spiral powder conveyor which are connected with the powder bins. The liquid tanks are connected with the blender through a liquid homogenizer and a conveying pipe which are connected with the liquid tanks. According to the preparation system for the high-performance concrete, the structure is simple, usage is convenient, the performance is high, the prepared concrete is reasonable in mixing ratio, and mixing is even.

The invention provides a genotype correction device and a genotype correction method. According to the invention, a statistical model is established for detected data through a Bayesian model, and theprior distribution is constructed. The overall distribution information is determined, and a posterior probability value P (GT | AF) is finally calculated. The genotype of a site is judged accordingto the posterior probability value and the threshold relation corresponding to the posterior probability value. The method is good in sensitivity and specificity, and is worthy of application and popularization.

The invention discloses a concrete continuous-blanking subsection-casting device. The concrete continuous-blanking subsection-casting device comprises a front support plate and a rear support plate which are fixed on a concrete casting template. A plurality of limiting plates is installed between the front and rear support plates. The lower part of each limiting plate is rotatably connected with the front and rear support plates. While each limiting plate arrives to the working position, a plurality of the limiting plates is inclined to two directions, two neighboring limiting plates which are contacted mutually are used as one group for cooperation use, and two neighboring limiting plates which are not contacted mutually are used as one pair for cooperation use. A blanking clearance is formed between each pair of the limiting plates. The concrete is fallen from the blanking clearance in the casting process. The concrete continuous-blanking subsection-casting device further comprises a driving device for driving each limiting plate to be rotated. The concrete continuous-blanking subsection-casting device is capable of realizing the continuous blanking process of the concrete and the casting subsection, effectively improving the uniformity of the concrete aggregate distribution, and improving the quality of the concrete.

The invention provides a carbon black reaction furnace. The carbon black reaction furnace comprises a combustion chamber and a reaction chamber which are connected in sequence, wherein a fuel spray gun is inserted into the combustion chamber from an air inlet position of the combustion chamber, an opening adjusting device is arranged on the air inlet position of the combustion chamber, the fuel spray gun is connected with a sliding device, and the sliding device adjusts the length of the fuel spray gun stretching into the combustion chamber. According to the carbon black reaction furnace, through the changes of the diameter of the air inlet and the size of the fuel spray gun entering the air inlet, the length of combustion flame is changed, the carbon black aggregate distribution and the quality fluctuate of the structure degree generated in the carbon black production process when different fuels exist and different carbon black varieties are converted are adapted, and the controllability of the quality of the carbon black product is improved. Meanwhile, the yield of the carbon black is further improved, and the energy is saved.