12 results about "Reinforcement corrosion" patented technology

The utility model belongs to the technical field of steel bar detection, especially relate to a reinforced concrete structure corrosion remote detection device, including steel bar rust quantitative detector, steel bar rust quantitative detector top end is equipped with support frame, steel bar rust quantitative detector both sides are equipped with X -ray emitter and X -ray detector respectively, support frame middle part is equipped with mounting seat. Through installing X -ray emitter and X -ray detector on steel bar rust quantitative detector, can let the X -ray emitter on steel bar rust quantitative detector emit X -ray, let X -ray shoot to the steel bar surface in the concrete, again through X -ray detector capture the ray of steel bar penetration, and form visual image on the display, again through signal antenna will image emit to remote control center, thereby can fast the steel bar corrosion in reinforced concrete is carried out effective remote detection, need not manual detection of artificial, improved the accuracy and convenience of device detection time.

The application relates to the technical field of civil engineering structure health monitoring, and discloses a reinforcing steel bar corrosion quantitative monitoring method based on an electromagnetic field and a probe type monitoring device, wherein the electromagnetic field is generated by a first probe and a second probe in the probe type monitoring device, and the first probe and the second probe are arranged on the two sides of a target position of a reinforcing steel bar to be measured; the method comprises the following steps: detecting the current magnetic field intensity on the two sides of the target position through the first probe and the second probe, and determining the magnetic field intensity change rate of the current magnetic field intensity relative to a preset reference magnetic field intensity; based on the reinforcing steel bar spacing between the reinforcing steel bar to be measured and an interfering reinforcing steel bar, a sensitivity correction coefficient is determined, and the theoretical sensitivity is corrected based on the sensitivity correction coefficient, wherein the theoretical sensitivity refers to the sensitivity of the magnetic field intensity change on the two sides of the target position to the reinforcing steel bar corrosion when the reinforcing steel bar is not interfered by the interfering reinforcing steel bar; and based on the magnetic field intensity change rate and the corrected sensitivity, the corrosion rate of the target position is determined. The application can achieve the technical effect of improving monitoring precision.

A data augmentation method includes: obtaining spatial distribution of reinforcing steel corrosion rate along a length direction, determining a standard deviation of the reinforcing steel corrosion rate based on the spatial distribution of reinforcing steel corrosion rate along the length direction, and determining a logarithmic functional relationship between the standard deviation of reinforcing steel corrosion rate and an average reinforcing steel corrosion rate through a fitting method; simulating the spatial distribution of reinforcing steel corrosion rate along the length direction using a Nataf transformation method to generate a distribution of reinforcing steel corrosion rate conforming to a logarithmic distribution, inputting the distribution of reinforcing steel corrosion rate into a finite element model of the reinforced concrete beam, and obtaining a crack width distribution corresponding to the distribution of reinforcing steel corrosion rate conforming to the logarithmic distribution; where the steps are repeatedly executed until a termination condition is met.

This invention discloses an electrochemically active self-healing anti-rust grouting material for basement slab bottoms and its preparation method. By introducing silane-modified epoxy-acrylate self-healing microspheres and pH-potential dual-response activated nano-iron powder into a cement-fly ash-mineral powder ternary cementitious system, a functional synergistic system integrating filling support, electrochemical self-healing, and steel reinforcement corrosion protection is constructed. The self-healing microspheres in the system achieve precise triggering and permanent healing of cracks upon their appearance, while avoiding the problem of deactivation in strongly alkaline environments common in traditional self-healing systems. A long-term relay cathodic protection mechanism requiring no external power supply is established using gradient potential dual-stage sacrificial anodes combined with a three-dimensional conductive network. Furthermore, the three-dimensional conductive network of the material enhances the integrity of the electrochemical circuit. This invention achieves enhanced protection of the void area at the bottom of basement slabs throughout its entire life cycle, providing a stable and scalable material and process foundation for underground engineering structures in high-water-level, highly corrosive environments.

This invention discloses a material and method for repairing salt-frost damage to concrete bridge railings, belonging to the field of civil engineering materials technology. The raw materials include: 30-34 parts composite cement, 16-20 parts mineral admixtures, 38-40 parts quartz sand, 1-3 parts nano-reinforcing agent, 1-3 parts steel reinforcement corrosion inhibitor, 2-4 parts expansion agent, 1-3 parts self-healing component, 2-4 parts polymer powder, 1-3 parts fiber, 5-7 parts solid functional repair component, and 14-17 parts water; wherein the solid functional repair component includes: powder water-reducing agent, powder water-retaining agent, powder antifreeze agent, and powder retarder. Through precise multi-component proportioning, the overall mechanical properties and impermeability are improved, salt-frost resistance is enhanced, crack propagation is prevented, the long-term integrity of the repair layer is ensured, steel corrosion is prevented, and on-site operation is adapted.

This invention provides a wireless electromagnetic induction probe device for detecting steel bar corrosion, belonging to the field of steel bar corrosion detection technology. The device includes a base, a bracket fixedly connected to the top of the base, a T-shaped movable seat inside the bracket, and a mounting hole inside the T-shaped movable seat. A second motor is fixedly installed inside the mounting hole, and a rotating shaft is fixedly connected to the drive shaft of the second motor. One end of the rotating shaft is welded to the end side of a fixed frame. A third motor is fixedly connected inside the fixed frame, and a one-way lead screw is welded to the drive shaft of the third motor. This invention, by operating three sets of motors, allows the wireless electromagnetic induction detector to expand its movement range, thereby further expanding the detection range on the wall surface. This eliminates the need for frequent movement of the entire device, reduces operational procedures, and improves detection efficiency.

This invention relates to the field of concrete durability testing technology, specifically to a concrete life analysis system and method for saline environments. The system includes: an environmental simulation module configured to perform immersion-drying cycles on concrete specimens and create a corrosive environment; a parameter acquisition module used to detect the relative dynamic elastic modulus and pore size distribution data of the concrete under load; a concentration analysis module configured to calculate the chloride ion concentration on the concrete surface based on the diffusion law; and a life prediction module used to generate life analysis results based on the effective thickness of the protective layer and the critical value of steel reinforcement corrosion. This invention solves the problem of traditional methods' difficulty in accurately simulating the high-concentration corrosive ion environment of saline soil by constructing a comprehensive analysis model that includes immersion-drying cycles and chloride ion diffusion. It effectively integrates the influence of load, temperature, and carbonation factors on concrete, achieving a precise quantitative assessment of the durability of the outer concrete layer of PCCP pipes under specific saline environments.

This invention belongs to the field of rebar detection technology, specifically relating to a rebar corrosion detection device and a method for detecting corrosion on the surface of rebar. It includes a detection host with rebar clamps and electrode rods respectively disposed on both sides, and further includes: a housing slidably fitted around the electrode rods; an auxiliary mechanism including a displacement sensing component mounted on the housing, a differential compensation component connected to the displacement sensing component, and a resistance adjustment component mounted on the differential compensation component; and a marking mechanism including a liquid delivery unit, a liquid spraying unit, a liquid injection unit, and a control unit mounted on the housing. The control unit drives the liquid delivery unit to operate, causing ink to be sprayed from the liquid spraying unit for marking. This invention, through structural optimization, dynamic compensation, and integrated marking, achieves three major benefits: ease of operation, accurate measurement, and efficient marking, significantly improving the technical level of rebar corrosion detection.

The application relates to a beam-hung assembly type wall connecting piece structure and a construction method thereof, which comprises a bottom plate, vertical steel pipes and two vertical side plates, the vertical steel pipes and the two vertical side plates are fixedly arranged on the bottom plate, the two vertical side plates are arranged at intervals and a clamping beak is formed between the two vertical side plates; a sliding sleeve ring is sleeved on the vertical steel pipe, a horizontal hanging rod is fixed on the outer wall of the sliding sleeve ring, a locking bolt is installed on the sliding sleeve ring, and a clamping space is formed between the horizontal hanging rod and the clamping beak. The beam-hung assembly type wall connecting piece structure in the application omits multiple processes such as pre-burying, protecting, installing, cutting, tail removing and repairing of a traditional wall connecting piece on a structure beam, and only needs to complete the installation or removal process once, so that hidden troubles of structure leakage and steel bar corrosion in the later period are eliminated, installation and removal convenience is improved, construction progress can be accelerated, the construction period can be shortened, and the applicability is high.

The utility model discloses a kind of wind power mixed tower reinforced concrete corrosion monitoring equipment, belong to reinforced corrosion monitoring technical field, comprising: support frame, through hole for reinforcing bar is passed and is provided on support frame, fixedly connected with extension plate on support frame, slidingly installed with pressing plate on extension plate, fixedly connected with spring between pressing plate and extension plate, first rack is fixedly connected with pressing plate close to support frame side, first gear meshed with first rack and second gear meshed with first gear are rotatably connected on extension plate, the diameter of second gear is greater than the diameter of first gear, second rack meshed with second gear is slidingly connected on extension plate, fixedly connected with fiber optic line on support frame, fiber optic line is fixedly connected with pressing plate through support frame, second rack bottom end is fixedly connected with fiber optic line.The utility model is through the diameter of second gear is greater than the diameter of first gear, the expansion of reinforcing bar has been amplified processing, to improve the monitoring sensitivity of reinforcing bar corrosion.

This invention discloses a synchronous detection device for arrayed permanent magnet and electrochemical impedance spectroscopy (EIS) of steel reinforcement corrosion in concrete, belonging to the field of electronic digital data processing technology. It is suitable for non-destructive testing of concrete structure corrosion in structural health assessment. The device includes at least one sub-detection mechanism. Each sub-detection mechanism comprises a unit frame and, from front to back, a permanent magnet probe, a main wheel, an electrical control box, and wheel-type electrodes arranged sequentially on the unit frame. The permanent magnet probe consists of a permanent magnet and a magnetic coil; the wheel-type electrodes consist of a transmitting electrode and a receiving electrode. The electrical control box is communicatively connected to both the permanent magnet probe and the wheel-type electrodes, and consists of an analog wireless acquisition module, an AC impedance analyzer, and electrode control valves. This device uses a permanent magnet perturbation method to identify the spatial distribution of corrosion state, and then combines this with the dynamic feature extraction of the AC polarization impedance method to quantitatively calculate the corrosion current and corrosion rate. The combination of these two methods allows for the synchronous acquisition and integrated assessment of the amount and rate of steel reinforcement corrosion without damaging the concrete structure. This invention also discloses a method for synchronous detection of arrayed permanent magnet and electrochemical impedance spectroscopy (EIS) of steel reinforcement corrosion in concrete.