139 results about "Compressive strength test" patented technology

The invention discloses a wharf armor block quality detection method, and belongs to the technical field of concrete structure detection.The method comprises the steps that a surface model is constructed through a movable three-dimensional laser scanning device, and a high-risk defect area is recognized; performing encryption scanning and impact echo detection in the high-risk area by adopting a frequency-adjustable dual-mode flaw detection device to generate a three-dimensional defect distribution diagram; a core sample is drilled in the defect area for compressive strength testing, and the material performance is analyzed in combination with a non-contact infrared spectrum; and establishing a dynamic evaluation model, calculating a safety coefficient by integrating surface defects, internal defects and material discreteness data, and generating a three-dimensional visual report. The problems that a traditional detection method is low in efficiency, insufficient in internal defect positioning precision, one-sided in material performance evaluation and the like are solved, full-dimensional detection from the surface to the interior and from the macroscopic level to the microscopic level is achieved through a multi-source data fusion and closed-loop feedback mechanism, and the reliability of structural safety evaluation and the scientificity of maintenance decision are remarkably improved.

The invention discloses a polystyrene plastic plate compression resistance testing device and method for refrigerator liner production, and relates to the technical field of refrigerator liner production. The device comprises a testing machine and a plastic plate, and further comprises a positioning unit which comprises a positioning assembly and a moving assembly; the pressure control hydraulic cylinder is arranged on the testing machine; the pressure applying testing unit comprises an adjusting assembly and a testing assembly, the adjusting assembly is used for adjusting the size of the pressed face of the plastic plate to achieve multi-area pressure applying, and the testing assembly is used for detecting and judging the testing result. The device has the advantages that the size of the compression surface of the plastic plate can be flexibly changed when the compression resistance of the polystyrene plastic plate is detected, the compression resistance of the plastic plate under different compression surfaces can be tested, the stress position of the plastic plate can be flexibly changed, the plastic plate cannot be damaged during testing, multi-position testing can be realized on the same plastic plate, and the testing efficiency is improved. The number of test samples is larger, and the test result is more accurate.

The invention relates to the technical field of geotechnical engineering material modification and industrial solid waste resource utilization, in particular to an industrial solid waste curing agent formula screening method for salinized loess improvement, which comprises the following steps: constructing a curing system with different industrial solid waste (such as fly ash, slag and steel slag) composite proportions, identifying the salt type and salt concentration of salinized loess, and determining the salt concentration of the salinized loess. The method comprises the following steps: preparing, maintaining and curing a sample, carrying out unconfined compressive strength test and X-ray diffraction (XRD) analysis, extracting peak areas of main reaction products, and calculating a structure-performance coupling mechanism index Mi = S / f7 (S is the XRD peak area, and f7 is the compressive strength of 7 days). The Mi value and the 28-day strength are used as judgment criteria, and a preferable formula with good structural product master control and strength development is screened out. The screening method provided by the invention has the advantages of distinguishable mechanism, quantifiable index, generalizable process and the like, and is suitable for formula design and engineering application of the industrial solid waste-based curing agent under the conditions of different salt concentrations and ion types.

The invention belongs to the technical field of concrete testing, and particularly provides mechanical property testing equipment and a detection method for recycled aggregate concrete. The mechanical property testing equipment for the recycled aggregate concrete comprises a machine body, a reversing unit, a pressure testing unit and two tension testing units, the pressure testing unit is arranged in the vertical direction, and the two tension testing units are arranged in the horizontal direction and do not interfere with each other in spatial position. The reversing unit can clamp a test piece and drive the test piece to move between the vertical direction and the horizontal direction, the placement state of the recycled aggregate concrete test piece is switched and changed in real time, and the flexibility of the equipment during mechanical property testing is improved; the recycled aggregate concrete test piece can meet the requirements of two different test items of compressive strength test and tensile strength test.

The invention relates to a method for detecting the strength of ultra-high performance concrete through a core drilling method with the diameter of 52 mm. The method comprises the following steps that S1, steel bar distribution is detected on a to-be-detected ultra-high performance concrete member through a steel bar detector, and a steel bar distribution grid is drawn; s2, core samples with the diameter of 52 mm are drilled in the grids; s3, after processing the core sample, carrying out a compressive strength test to obtain a compressive strength value of the core sample; and S4, presuming the structural concrete strength by utilizing a correction coefficient formula according to the compressive strength value of the ultra-high performance concrete core sample. According to the method, the optimal core sample size of UHPC sampling is obtained through a contrast test, a correction coefficient formula suitable for the UHPC optimal core sample is obtained according to test data, the obtained optimal core sample size meets the standard requirements, damage to the UHPC component is minimum, and the strength of the UHPC component can be obtained.

The invention discloses a performance detection method and system for ultra-high performance concrete, particularly relates to the technical field of building material performance detection, and aims to solve the problem of strength test discreteness caused by neglecting of an aging effect after high-temperature maintenance in an existing detection method. The method comprises the following steps: recording a first time point when a test piece is cooled at room temperature and a second time point when a press machine is loaded, and generating a comprehensive aging factor in combination with double quantitative analysis of a fiber pull-out fragment proportion and a crack fractal dimension in a damage process image; matching a strength correction coefficient from a preset table according to the aging factor, and dynamically calibrating a first compressive strength test result; accurate association between the aging damage mechanism and the macroscopic strength is achieved, and the reliability evaluation precision of the ultra-high performance concrete in major engineering is remarkably improved.

The invention discloses a concrete depth performance detection method, and relates to the technical field of concrete performance detection.The device comprises a shell, a top cover, a combined pressurizing mechanism, a combined supporting mechanism, a water inlet pipe, a camera, a controller and a high-pressure water supply device; the method comprises a compressive strength test mode, a permeability resistance test mode and a test piece permeability detection mode after different pressure loads. Through the design, observation and research on permeability change of the test piece after loading can be realized, and data reference is provided for actual engineering. Meanwhile, the device disclosed by the invention can be used for carrying out compressive strength test and permeability resistance test, so that the applicability of the device is effectively improved, the application range is widened, and convenience is provided for in-depth research of concrete performance.

The invention relates to the technical field of compressive strength detection equipment, in particular to aluminum profile compressive strength detection equipment which comprises a base, an inverted-U-shaped plate is connected to the top of the base, an electric clamp used for clamping and fixing an aluminum profile is arranged at the top of the base, and a display mechanism used for displaying the deformation sunken depth of the aluminum profile is arranged on the inverted-U-shaped plate. After the deformation sunken position of the aluminum profile extruded by the pressing block is aligned with the U-shaped push plate, the U-shaped push plate can be pushed under the action of the spring I to pull the piston rod to move downwards through the push-pull plate, so that the colored liquid in the measuring cylinder is pumped into the cylinder body through the liquid conveying pipe, and the liquid level variation of the colored liquid in the measuring cylinder is the deformation sunken depth of the extruded aluminum profile; the deformation sunken depth of the aluminum profile can be visually displayed through the scales on the measuring cylinder, so that the intuition and the convenience of the compressive strength detection of the aluminum profile are greatly improved, and the detection precision can be improved.

The invention discloses a mixing design-based ratio optimization method for a multi-source solid waste cementing material containing alkaline residues, which is used for optimizing to obtain an optimal ratio of five solid waste components according to a preset cementing material performance target, the alkaline residues are used as an alkaline excitation component, a D optimal mixing design method is adopted to determine a test point, a three-order normative polynomial model is established, and the optimal ratio of the five solid waste components is obtained. Setting constraint conditions of each solid waste component, testing the three-day compressive strength and 28-day compressive strength of the neat paste for each test point, obtaining a first fitting model based on compressive strength response and a second fitting model based on response according to test data, and according to a preset performance target, the first fitting model and the second fitting model, calculating the compressive strength of the neat paste according to the first fitting model and the second fitting model. Solving through a multi-objective optimization algorithm to obtain an optimal proportion of five solid waste components; according to the method, the problems of low efficiency and high cost of a traditional trial and error method are solved, and scientization and standardization of the proportion design of the multi-source solid waste cementing material are realized.

The invention belongs to the field of coal seam coal rock mechanical property testing, and particularly relates to an accurate fidelity testing method for three-resistance strength parameters of coal rock before heat injection and permeability increase. Comprising the following steps: S1, sample preparation; s2, testing equipment configuration; s3, environment control; testing in the testing cover, setting the temperature and humidity in the testing cover to be consistent with the original sample environment, setting the temperature fluctuation range to be less than or equal to + / -1 DEG C, and maintaining parameter stability through an automatic adjusting system; s4, testing compressive strength; loading at a constant speed of 0.5 MPa / s, recording a failure load and calculating compressive strength c = Fc / A; s5, tensile strength testing; stretching at the speed of 1MPa / s, recording the fracture load and calculating the tensile strength r = 2Fr / piDt; s6, testing the shear strength; loading shear force at a constant speed, recording a failure load and calculating shear strength; S7, analyzing data; and after abnormal values are removed, generating a strength parameter curve, and comparing mechanical property data in different stress states. The accurate fidelity testing method for the three-resistance strength parameters of the coal rock before coal seam heat injection and permeability increase has the advantages of being easy and convenient to operate, rapid in testing, accurate in data and the like.

The invention discloses a strength prediction model construction method based on a solidified soil micro-pore structure, and relates to the technical field of dredged sludge solidification construction.The strength prediction model construction method based on the solidified soil micro-pore structure comprises the steps that sludge, rice hull ash and carbide slag are mixed according to a preset proportion, and a mixture is obtained; adding water into the mixture and curing to a preset age to obtain a cylindrical sample; performing unconfined compressive strength test on the cylindrical sample to obtain a damaged sample; cutting out a section center 5 mm * 5 mm area from the destroyed sample, and extracting the porosity; establishing a strength prediction model according to the mixing amount of the rice hull ash, the mixing amount of the carbide slag, the preset age and the porosity; according to the invention, the strength prediction model construction method based on the solidified soil micro-pore structure is established, so that the strength of the sludge solidified soil is predicted. Theoretical guidance and parameter optimization basis are provided for sludge solidification treatment engineering, and theoretical basis is provided for resource utilization of dredged sludge.

The invention relates to the technical field of asphalt concrete detection, in particular to an asphalt concrete strength detection device which comprises a press machine, an upper pressing plate and a lower placing table, the protective cover is movably arranged in a base of the press machine; the gas injection mechanism is linked with the protective cover and is driven by the upward movement of the protective cover; the annular air bag is arranged on the periphery of the lower placement table and communicated with the air injection mechanism, automatic centering of the concrete sample is achieved through radial pushing of the annular air bag, and the problem that it is difficult to guarantee that the sample and the pressing plate are strictly coaxial through traditional manual placement is solved; the air bag is completely deflated and shrunk before being pressurized and is separated from the side wall of the sample, so that the interference of lateral supporting force on a detection result is thoroughly eliminated, the phenomenon that the strength value is virtually high due to constraint stress is avoided, and the accuracy and repeatability of the compressive strength test are effectively improved.

The invention discloses a chitin-silicon-calcium-based modified material for rammed earth wall repair and a weather resistance evaluation method thereof, and belongs to the technical field of rammed earth wall repair, the chitin-silicon-calcium-based modified material comprises metakaolin, calcium oxide, quartz and chitin; the ratio of chitin to metakaolin to calcium oxide to quartz is 1: 1: 2: 4; the method comprises the following steps: pre-treating at the earlier stage of a test, evaluating freeze-thaw cycle performance, evaluating dry-wet cycle performance, evaluating salt corrosion resistance, analyzing association between a microstructure and a strength performance, and finally, revealing a material degradation rule and mechanism by combining scanning electron microscope observation, unconfined compressive strength test and crack rate analysis. When the freezing and thawing cycle number N is less than or equal to 5, the dry and wet cycle number I is less than or equal to 9, and the salt solution concentration c is less than or equal to 0.3 mol / L, the characteristics of freezing and thawing resistance, dry and wet resistance, salt erosion resistance and the like of the modified material are obviously improved; after the modified material is added, internal pores of plain soil can be filled, unconfined compressive strength of a soil body is enhanced, and long-term durability of the soil body is improved.

The application discloses a kind of quick detection methods of mineral powder activity.The steps are: taking activating agent and water configuration activation solution, according to GB / T 17671 "cement mortar strength test method" method, activation solution, mineral powder and sand are prepared and test block is formed, and after 15-17h in standard mortar curing box, formwork is dismantled, again, it is placed into oven and is maintained 6-8h after film coating, cooling to room temperature carries out compressive strength test, and the activity index of mineral powder is calculated by the calculation formula of compressive strength and activity index.The application utilizes alkali-sulfate and seed compound excitation characteristics, and combines high-temperature rapid curing system to quickly stimulate mineral powder activity, effectively shortens mineral powder hydration period, and the activity index detection time is shortened from original 28d to 1d by test block compressive strength, greatly improves mineral powder activity index detection efficiency, and accuracy is higher, and is suitable for promotion and application.

This invention discloses a method for obtaining the strength of a pillar considering friction factors, comprising: preparing rock samples with different aspect ratios and configuring contact surface materials with different tribological properties; determining the cohesion and friction coefficient of each contact surface material through shear testing, conducting compressive strength tests on rock samples with different contact surface materials to obtain rock sample strength data under different friction levels and aspect ratios; selecting a pillar strength calculation formula corresponding to the actual contact conditions between the pillar and the surrounding rock, calculating the strength of the target pillar under design conditions, and calculating the load on the pillar itself based on the pillar area bearing theory; calculating the pillar safety factor based on the pillar strength and the load, and optimizing the pillar design accordingly.

This invention discloses a concrete sample compressive strength testing device, relating to the field of concrete testing technology. It includes a base plate, with a testing cylinder and a vertical rod fixedly connected to the upper side of the base plate. A top plate is fixedly connected to the upper end of the vertical rod, and a hydraulic cylinder is fixedly connected to the upper side of the top plate. A cleaning unit is provided at the lower output end of the hydraulic cylinder. The cleaning unit includes a fixed frame, which is fixedly connected to the lower output end of the hydraulic cylinder. A fixed cylinder is fixedly connected to the lower side of the fixed frame, and a rotating shaft is rotatably connected to the inner side of the fixed cylinder. A mounting plate is fixedly connected to the lower end of the rotating shaft. This concrete sample compressive strength testing device uses a hydraulic cylinder to control the descent of the testing head to test the concrete sample. After testing, the testing head is controlled to rise, bringing a flexible scraper into contact with the testing head, and the testing head is controlled to rotate, cleaning debris from the surface of the testing head. The operation is simple and convenient for subsequent tests.

The utility model relates to the technical field of measuring area drawing devices, in particular to a concrete compressive strength measuring area drawing device which comprises a fixed bottom frame, a drawing ink plate is arranged in the fixed bottom frame, and a fixed button is arranged on the surface of the drawing ink plate. A handle is arranged on the surface of the printing plate, a printing ink disc is arranged in the printing plate, and a printing block is arranged on the surface of the printing ink disc; the concrete compressive strength test area drawing device has the beneficial effects that the concrete compressive strength test area drawing device can be frequently moved or tested at different places through the handle, the fixing ring is taken down from the surface of the printing plate, then the printing plate is taken out from the fixing bottom frame through the handle, an area needing to be tested is drawn, and a sealing cover is rotated to draw the concrete compressive strength test area. When ink in the printing block is insufficient, the printing block can be placed in the circular groove, downward pressure is applied to the printing block, ink in the printing ink disc is dip-dyed to the surface of the printing block through the arc-shaped hole in the surface of the pressing plate, and therefore drawing of the concrete compressive strength measuring area can be more conveniently completed.

The present application relates to the technical field of geological exploration, and discloses a rock mass compressive strength testing device, which comprises a rack, a working chamber is formed in the rack, a hydraulic cylinder is installed on the top of the rack, the output end of the hydraulic cylinder is located in the working chamber, and a pressing head is installed on the output end of the hydraulic cylinder; a placing table is installed on the bottom of the rack and used for placing a sample; and an automatic placing assembly is installed on the placing table and used for automatically moving the sample to the center of the top surface of the placing table. The present application can automatically adjust the position of the sample, quickly place the sample on the detection position on the placing table, and is safe and reliable to use, and the present application can conveniently clean the surface of the placing table, avoid the surface of the placing table from being covered with rock particles, and is more convenient to use.

The utility model relates to the technical field of test devices, and discloses a cement compressive strength test device, which solves the problems that the existing test device lacks a protective structure and is inconvenient to clean cement disintegrating slag, and comprises a support frame, and a cement placing table is fixedly arranged in the middle of the bottom end in the support frame; a protective sleeve slidably connected with the supporting frame is arranged at the top of the cement placing table, a hydraulic rod penetrates through the middle of the top end of the supporting frame, a pressing seat fixedly connected with the hydraulic rod is arranged at the top end in the supporting frame, and a control panel is fixedly arranged on one side of the supporting frame. The cement placing table is composed of a central pressure-bearing supporting seat, a square frame, four connecting seats and four flow guide covers; by means of the testing device, safety protection can be achieved, and meanwhile cement disintegrating slag can be conveniently cleaned.

The utility model relates to the technical field of sheet metal part detection, and discloses an automobile sheet metal part compressive strength test fixture which comprises a shell, a lining pipe frame is connected to the top end of the inner wall of the shell, a partition plate is connected between the outer surface of the lining pipe frame and the inner side of the shell, and a driving motor is connected to one side of the inner wall of the lining pipe frame. The output end of the driving motor is connected with a lead screw, one end of the lead screw is connected with a traction frame, a plurality of connecting rods are rotationally arranged on the outer ring of the traction frame, and the bottom end of the partition plate is connected with a plurality of sets of sliding rods. Through the arrangement of the multiple clamping mechanisms and the extrusion mechanisms, sheet metal parts in special shapes can be effectively limited and fixed, the application range is effectively widened, meanwhile, the top faces of the sheet metal parts are pressed downwards through the lower frame clamping plates, the bottom faces of the sheet metal parts are jacked upwards through the extrusion mechanisms, the fixing effect is guaranteed, the overall fixing mode of the device is automatic, and the production efficiency is improved. Operation is easy, using is convenient, manpower consumption is greatly reduced, and the using requirement is met.

This invention relates to the field of paper testing, and more particularly to a compressive strength testing device for kraft paper production. The device includes a testing platform with top frames fixed to both sides of its upper end. Support rods are fixed between the upper end of the testing platform and the top frames. A set of flattening rollers is rotatably mounted on the upper end of the top frames. Kraft paper passes through the gaps between the flattening rollers. A set of clamping plates is provided at both the upper and lower ends inside the top frames. The clamping plates are installed in clamping brackets at both ends, with the upper clamping bracket fixed to the top frame and the lower clamping bracket slidably mounted on the support rods at both ends. A pressure-applying component is provided on one side of the top frame, and a testing component is provided below the testing platform. This invention utilizes a single testing device to simultaneously perform tensile and compressive strength tests on kraft paper, achieving high testing accuracy and good testing results. Furthermore, it effectively prevents the clamping plates from loosening during testing, thereby greatly improving the clamping stability of the kraft paper and preventing it from loosening and detaching.

This invention relates to the field of cement building materials technology, specifically disclosing a method for improving the strength of silicate clinker based on mineral and crystal composition analysis. The method involves collecting 3-day and 28-day compressive strength test data of silicate clinker and quantitatively analyzing the mineral and crystal composition data using XRD. A mineral composition and strength zoning statistical method is employed to obtain appropriate C3S or C2S content to maintain a relatively good overall level of 3-day and 28-day compressive strength of the clinker. Then, a stepwise multiple linear regression analysis is used to establish the relationship between the 3-day and 28-day compressive strength of the clinker, clinker liter weight, f-CaO, the content of other chemical components, and the mineral composition and crystal content of the clinker. Specific analytical methods are used to determine optimization measures, further optimizing and improving the clinker strength. Using the above method, the 3-day and 28-day compressive strength of silicate clinker can be improved simultaneously.

The utility model discloses a concrete brick sample preparation mold, which relates to the technical field of brick sample preparation molds, and comprises a mold body, a rotating piece and a flattening assembly are rotatably connected on the mold body, the flattening assembly is arranged in the mold body, the flattening assembly comprises a shifting block rotatably connected with the mold body, a first transmission rod is fixedly connected on the shifting block, and a second transmission rod is fixedly connected on the first transmission rod. The first transmission rod is slidably connected with a sliding rod, the first transmission rod is fixedly connected with a limiting plate, the limiting plate is fixedly connected with a universal joint, the universal joint on the limiting plate is fixedly connected with a second transmission rod, the second transmission rod is slidably connected with a third transmission rod, and the third transmission rod is slidably connected with a first connecting rod. The first connecting rod is slidably connected with the roller, so that a test piece with a uniform standard is provided for subsequent compressive strength test, brick samples manufactured by different batches and different operators have an accurate and comparable foundation, and the accuracy of real quality level measurement of bricks is greatly improved.

The invention relates to the technical field of oil exploration and development, and discloses a hot dry rock temporary plugging material optimization screening method based on a multi-parameter coupling model. The method comprises the steps of temporary plugging material data set formation, high-temperature aging experiment, compression resistance test, three-dimensional finite element model construction, force chain structure evolution analysis, indoor crack plugging experiment verification, shear stability evaluation and multi-parameter comprehensive evaluation. According to the method, multi-dimensional parameters such as high-temperature aging, dynamic shear stability and particle matching are integrated, numerical simulation and experimental verification are combined, high-precision and high-efficiency screening of the temporary plugging material is achieved, the problems of single index limitation and environment distortion of a traditional method are solved, scientific and reliable technical support is provided for hot dry rock development, and the method has a wide application prospect. And the problems in the background technology can be effectively solved.

The application discloses a kind of column strength testing device and its using method, the device includes: test operating platform, with bottom plate and the two vertical walls being arranged at both ends of bottom plate;Two clamping components are respectively slidably arranged on two vertical walls, for clamping the two ends of the column to be measured;Compression strength test component cooperates with two clamping components, at least including the pressing block provided with pressure sensor and the laser displacement sensor being arranged directly below pressing block, for measuring the pressure and deformation that the column to be measured bears;Anti-torsion test component is rotatably connected with one end of the column to be measured, for measuring the torsional force that the column to be measured receives, wherein the other end of the column to be measured is fixed;Strain gauge fixing component cooperates with anti-torsion test component, and is connected with the column to be measured, for measuring the deformation generated after the column to be measured receives torsional force.The measurement result of the embodiment of the application is accurate.

The present invention provides a method for correcting the compressive strength of non-standard specimens of large-size cement-stabilized gravel, which relates to the field of road engineering technology. The method comprises: determining a benchmark specimen and performing a compressive strength test on the benchmark specimen to obtain a compressive strength value of the benchmark specimen; constructing a calibrated three-dimensional discrete element numerical model of the specimen; using the calibrated three-dimensional discrete element numerical model of the specimen to perform a compressive strength numerical simulation of large-size cement-stabilized gravel specimens of different sizes to obtain a set of failure strengths; obtaining a strength-volume expression of failure strength and specimen size; determining a compressive strength correction coefficient of the large-size cement-stabilized gravel specimen using the strength-volume expression; and obtaining the true compressive strength value of the large-size cement-stabilized gravel specimen using the compressive strength correction coefficient and the compressive strength value of the benchmark specimen. The present invention solves the problem in the prior art of inaccurate test results due to inconsistent compressive strengths under specimens of different sizes.

The utility model relates to the technical field of sintered perforated brick testing, and discloses a compressive strength testing device for sintered perforated bricks, which comprises a processing box, first linear guide rails are fixedly connected to the left outer wall and the right outer wall of the processing box, and first sliding blocks are slidably connected to the outer walls of the first linear guide rails. Supporting columns are fixedly connected to the tops of the first sliding blocks, a transverse plate is fixedly connected between the tops of the supporting columns, a second linear guide rail is fixedly connected to the bottom of the transverse plate, a second sliding block is slidably connected to the outer wall of the second linear guide rail, and a connecting plate is fixedly connected to the bottom of the second sliding block; and the bottom of the connecting plate is fixedly connected with a hydraulic cylinder. Different positions of the hydraulic cylinder and the extrusion plate at the bottom are extruded through the first linear guide rail, the first sliding block, the second linear guide rail and the second sliding block, porous bricks of different sizes are clamped through the clamping plate, the second spring and the telescopic rod, the porous bricks of different sizes can be clamped according to needs, and the working efficiency is improved.

The application discloses a kind of based on mix design's containing alkali residue multi-source solid waste cementing material proportioning optimization method, for obtaining the best five kinds of solid waste component proportion according to preset cementing material performance target, wherein alkali residue is used as alkaline excitation component, determines test point using D optimal mix design method, establishes three-order standard polynomial model, sets the constraint condition of each solid waste component, carries out net paste 3 days compressive strength and 28 days compressive strength test to each test point, obtains the first fitting model based on compressive strength response and the second fitting model based on response according to test data, according to preset performance target, according to the first fitting model and the second fitting model, the optimal five kinds of solid waste component proportion are obtained by solving using multi-objective optimization algorithm;The method solves the problems of low efficiency and high cost of traditional trial-and-error method, realizes the scientization and standardization of multi-source solid waste cementing material proportioning design.

The present application relates to the technical field of compressive strength test, and particularly relates to a concrete compressive strength detection method based on ultrasonic rebound method.The present application divides the surface of concrete structure into several concrete regions and arranges corresponding measuring points, respectively collects ultrasonic signals and surface rebound values of each measuring point, calculates concrete pressure characteristic value, determines whether the concrete of concrete region is abnormal, carries out secondary measurement, and generates several compressive strength values, uploads the abnormal compressive strength values of each abnormal concrete region to a pre-constructed compressive strength value library for comparative analysis, determines whether the compressive strength of abnormal concrete region is qualified based on the comparative analysis result, and classifies the reasons for unqualified compressive strength of abnormal concrete region based on dimensional characteristic index and sends corresponding alarm signals.The present application improves the accuracy of concrete compressive strength detection through ultrasonic rebound method detection and analysis of each concrete region.