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  • The system is a cracknet software based on artificial intelligence deep learning and large-scale parallel processing. It has automatic disease detection function. It is the only intelligent pavement damage detection technology based on large-scale deep learning technology put into use in the world. At present, the user regions include the United States, Brazil, South Africa, Japan and China.
  • Using the Internet of things and cloud technology, sensors and IOT system are installed and deployed in the key positions of the bridge to sense the changes of important parameters of the bridge, and the analysis and overall evaluation of monitoring data are realized through the cloud health monitoring system software.
Main business Security technology Engineering material testing
Engineering material testing
2020.12. 01
1. Soil moisture content, density, specific gravity, particle composition, boundary moisture content, natural consistency, compaction test (maximum dry density, optimal moisture content), bearing ratio( CBR), maximum dry density, modulus of resilience, free expansion rate, loss on ignition, organic matter content, pH, total soluble salt, relative density of sand
2. Coarse aggregate: particle size distribution, density, water absorption, water content, mud content, clay content, needle and flake particle content, firmness, crushing value, Los Angeles abrasion loss, polishing value, alkali activity, sulfide and sulfate content, organic matter content, soft particle content, broken gravel content, fine aggregate: particle size distribution, density, water absorption, water content, Clay content, clay lump content, firmness, crushing index, sand equivalent, methylene blue value, chloride content, angularity, alkali activity, sulfide and sulfate content, mica content, light matter content, shell content, mineral powder: particle size distribution, density, moisture content, hydrophilic coefficient, plastic dispersion, heating stability
3. Rock uniaxial compressive strength, moisture content, density, gross bulk density, water absorption, frost resistance, firmness
4. Cement density, fineness (sieve residue and specific surface area), water consumption for standard consistency, setting time, stability, mortar strength, chloride ion content, alkali content, fluidity of mortar, loss on ignition, sulfur trioxide content, magnesium oxide content and insoluble matter content
5. Cement concrete, mortar, cement concrete: consistency, apparent density, air content, setting time, compressive strength, compressive modulus of elasticity, flexural tensile strength, impermeability, mix design, splitting tensile strength, bleeding rate, dry shrinkage, expansion and expansion degree, time-lapse loss, electric flux, chloride ion diffusion coefficient Ø mortar: consistency, density, cube compressive strength, mix design, water retention, setting time, stratification, frost resistance
6. Water PH value, chloride ion content, sulfate (S042 -) content, alkali content, insoluble content, soluble content
7. Admixtures PH value, Chloride ion content (potentiometric titration only), total alkali content, water reduction rate, bleeding ratio, compressive strength ratio, shrinkage ratio, setting time difference, air content, time variation (slump and air content), relative durability, solid content, moisture content, density (only Pycnometer method and liquid gravity balance method), fineness, sodium sulfate content, fluidity of cement paste, pervious pressure ratio, penetration height ratio, and limited expansion rate
8. Density, fineness, specific surface area, water demand ratio, fluidity ratio, loss on ignition, water content, sulfur trioxide content, free calcium oxide, chloride ion content, calcium oxide content, magnesium oxide content, stability, activity index, silica content, alkali content
9. Inorganic binder stabilized material lime: effective calcium oxide and magnesium oxide content, magnesium oxide content, undigested residue content, moisture content, fineness fly ash (subgrade, base, subbase): loss on ignition, fineness( SiO2 + A1203 + Fe203) total content, specific surface area, moisture content, inorganic binder stabilized materials: maximum dry density, optimum moisture content, cement or lime dosage, mix design, unconfined compressive strength, delay time, indirect tensile strength, flexural tensile strength, compressive rebound modulus
10. Asphalt density, penetration, penetration index, ductility, softening point, solubility, film or rotary film heating test (mass change, penetration ratio of residue, increment of softening point 60 C viscosity ratio, aging index, aging ductility), flash point, ignition point, wax content, adhesion to coarse aggregate, kinematic viscosity, dynamic viscosity, standard viscosity, Engler viscosity, Brinell rotational viscosity, and so on, Asphalt chemical composition (four components), viscosity toughness, toughness, asphalt anti stripping agent performance evaluation (adhesion between asphalt and coarse aggregate, immersion residual stability, freeze-thaw splitting tensile strength ratio) (emulsified asphalt: evaporation residue content, residue on sieve, particle ion charge, adhesion with coarse aggregate, storage stability, and cement mixing test Polymer modified asphalt: storage stability (segregation or 48h softening point difference), elastic recovery rate
11. Asphalt mixture mix design, density, void ratio, mineral aggregate porosity, saturation, Marshall stability, flow value, theoretical maximum relative density, dynamic stability, asphalt content, mineral aggregate gradation, water permeability coefficient, Bending test (bending tensile strength, maximum bending tensile strain, bending stiffness modulus), splitting tensile strength, freeze-thaw splitting tensile strength ratio, schellenburg asphalt leakage loss, Kentucky Fort flying loss slurry mixture: consistency, abrasion value, demulsification time, cohesion, adhesion sand amount, rut deformation (width deformation rate, rutting depth), mixing test (mixing time, non construction time), compatible performance grade lignin fiber: length, PH, ash, oil absorption, water content, heat resistance
12. The thickness of geosynthetics, mass per unit area, geometric dimensions, tensile strength, elongation, CBR bursting strength, trapezoidal tear strength, puncture strength, joint / solder joint strength, hole diameter, vertical permeability coefficient, effective aperture, clogging, hydrostatic pressure resistance
13. Chloride ion content, setting time, fluidity, flexural strength, compressive strength, bleeding capacity, free expansion rate, pressure bleeding rate, filling degree, trioxide bowl content and specific surface area of grouting materials
14. Waterproof material waterproof board: tensile strength, elongation at break, tear strength, low temperature bending, impermeability, heating expansion, appearance quality, Overall dimension (length, thickness, width) waterstop: dimensional tolerance, appearance quality, hardness, tensile strength, elongation at break, tear strength, hot air aging (hardness change shore, tensile strength, elongation at break), brittle temperature waterstop: tensile strength, elongation at break, volume expansion ratio, repeated immersion test, bending at low temperature, appearance quality, dimensional tolerance (diameter, width, height), hardness, high temperature fluidity, low temperature test, waterproofing membrane: thickness, soluble matter content, heat resistance, tension, elongation, low temperature flexibility, nail bar tear strength, static load resistance, joint peel strength, thermal aging test (tensile retention, elongation retention, low temperature flexibility) /Low temperature bending property, dimensional change rate, mass loss), low temperature bending property, impermeability, appearance, area, mass per unit area, thickness of asphalt coating layer on the lower surface of coiled material, chemical resistance (appearance, maximum tensile strength retention rate, tensile strength retention rate, elongation rate retention rate at maximum tensile strength, fracture elongation variation rate and low temperature bending property)
15. Weight deviation, size deviation, tensile strength, yield strength, elongation after fracture, maximum force, total elongation, bending property, reverse bending, shear resistance of welded steel fabric, and residual deformation under uniaxial tension
16. The maximum force, maximum force, total elongation, yield strength, reduction of area, modulus of elasticity, anchorage performance under static load (dislocation efficiency coefficient and total elongation), hardness, relaxation rate, bending and repeated bending of prestressed steel and anchorage, clamp and connector
17. Bridge bearing dimensions, appearance quality, internal quality, ultimate compressive strength, compressive modulus of elasticity, shear modulus of elasticity, shear aging, shear bond performance, friction coefficient, vertical bearing capacity (vertical compression deformation, radial deformation of basin ring)
18. Appearance quality, dimension deviation, welding quality, surface coating quality (coating adhesion and coating thickness), assembly tolerance, clamping performance of rubber sealing belt, waterproof performance of bridge expansion device
19. Appearance, size, ring stiffness, local transverse load, flexibility, tensile property, longitudinal load, radial stiffness, impact resistance, ash content, aging resistance, leakage resistance, drawing force, sealing property
20. High strength bolt, high strength bolt connection pair tightening axial force, high strength bolt connection pair torque coefficient, high strength bolt connection pair anti slip coefficient, high strength bolt final tightening torque, high strength bolt, nut and gasket hardness, high strength nut guarantee load, high strength bolt wedge load
21. Traffic safety facilities, traffic signs: structural dimensions, thickness of anticorrosive coating on steel members, and mechanical properties of materials, Chromaticity performance of sign board (only for surface color), Photometric Performance of sign board, adhesion performance of reflective film, impact resistance of reflective film, salt spray corrosion resistance of reflective film, high and low temperature resistance of reflective film, pavement marking coating: chromaticity performance, softening point, compressive strength, wear resistance, premixed glass bead content, corrugated beam steel guardrail: overall dimensions, material mechanical properties, overall resistance of splicing bolt connection pair Tensile load, thickness of anticorrosive coating, adhesion amount of galvanized coating, adhesion performance of anticorrosive coating, salt spray corrosion resistance of anticorrosive coating, disaster road sign: structure size, Chroma performance (only for surface color), anti reflection performance, overall impact resistance, compressive load, temperature cycling resistance, salt spray corrosion resistance, high barrier: structure size, steel wire diameter, steel wire tensile strength, solder joint tensile strength, anticorrosive coating thickness, anticorrosive coating adhesion performance, anticorrosive coating bending performance, salt spray corrosion resistance of anticorrosive coating, impact resistance of coating, damp heat resistance of coating Performance anti glare board: structure size, wind load resistance, deformation resistance, impact resistance, low temperature falling resistance profile: overall dimension, photometric performance, chromaticity performance, sealing performance. High and low temperature resistance, salt spray corrosion resistance, installation construction engineering: overall dimension, installation height, installation distance, installation angle, column straightness, column buried depth, anticorrosive coating thickness, luminosity performance of marking line, anti sliding value of marking line