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Filling type maintenance device and method for concrete crack repairing in winter in cold regions

A concrete and filling technology, which is applied in the fields of earthwork drilling, building maintenance, road repair, etc., can solve the problems of concrete structure cracking and cannot be repaired, and achieve stable and long-lasting hydration process, simple structure and good fluidity

Active Publication Date: 2021-04-30
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a filling curing device and method for repairing concrete cracks in winter in cold regions, so as to solve the problem that cracks in concrete structures cannot be repaired in winter in cold regions

Method used

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  • Filling type maintenance device and method for concrete crack repairing in winter in cold regions
  • Filling type maintenance device and method for concrete crack repairing in winter in cold regions
  • Filling type maintenance device and method for concrete crack repairing in winter in cold regions

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specific Embodiment approach 1

[0042] Specific implementation mode one: combine Figure 1 to Figure 11 Describe this embodiment, this embodiment comprises infrared camera 4, pressure regulator 5, temperature control switch 6, alarm 7 and two electrode type injectors 1, each electrode type injector 1 comprises flat needle 1-1, electrode Sheet 1-2 and injection body 1-3, the flat needle 1-1 is detachably connected to the discharge end of the injection body 1-3, and the flat needle 1-1 is detachably connected to the injection body 1-3 At the discharge end, one end of the flat needle 1-1 is a feed port connected to the discharge end of the injection body 1-3, and the other end of the flat needle 1-1 is processed with a discharge port 10, and the flat needle 1-1 Electrode sheets 1-2 are arranged on the outer wall of the injection body, and the injection body 1-3 is filled with conductive concrete. The two electrode sheets 1-2 of the two electrode injectors 1 are electrically connected to the voltage regulator 5,...

specific Embodiment approach 2

[0049] Specific implementation mode two: combination Figure 1 to Figure 5 Describe this embodiment, the curing method in this embodiment is to heat the conductive fibers in the freshly mixed cement mortar to form conductive concrete, fill the conductive concrete into the electrode injector 1, and insert the flat needle 1-1 into the existing concrete project In the cracked gap 16, control the piston end of the injection body 1-3 so that the conductive concrete fills the cracked gap 16 through the discharge port 10 of the flat needle 1-1, and disassemble the injection body 1-3 from the flat needle 1-1 after filling Down, the electrode sheet 1-2 on the flat needle 1-1 is electrically connected to the voltage regulator 5, and according to the different resistances generated by the conductive concrete in the crack 16, use the voltage regulator 5 to apply a corresponding voltage to the conductive concrete, Use the infrared thermal imager 4 to monitor the temperature at the crack 16...

specific Embodiment approach 3

[0051] Specific embodiment three: this embodiment is a further limitation of specific embodiment one or two, and the detailed operation steps of the maintenance method described in this embodiment are:

[0052] Step 1: Preparation and use of cement mortar:

[0053] The preparation process is to add conductive fibers to the traditional cement mortar to form conductive concrete. The conductive concrete is a fiber reinforced cement-based composite material. The conductive concrete is poured into the electrode injector 1, and the conductive concrete in the electrode injector 1 is pumped by the electric pump Concrete squeezed into the cracked gap 16 in the concrete work;

[0054] Step 2: After filling the gap 16, the injection body 1-3 is separated from the flat needle 1-1, and the flat needle 1-1 continues to stay in the gap 16, and the flat needle 1-1 with the electrode sheet 1-2 1 Power on, measure the resistance of conductive concrete, adjust the infrared thermal imager 4 to t...

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Abstract

The invention discloses a filling type maintenance device and method for concrete crack repairing in winter in cold regions. The device and the method aim to overcome the defects that after a concrete structure is cracked in winter in a cold region, an existing method cannot achieve rapid repairing on site, and great problems are brought to continuous use of the structure. According to the filling type maintenance device, each electrode type injector of comprises a flat needle head, electrode plates and an injection body; the flat needle head is detachably connected to the discharging end of the injection body, a feeding port communicating with the discharging end of the injection body is machined in one end of the flat needle head, and a discharging port is machined in the other end of the flat needle head; and the electrode plates are arranged on the outer wall of the flat needle head, the injection body is filled with conductive concrete, the two electrode plates of the two electrode type injectors are electrically connected with a voltage regulator, the voltage regulator is connected with a thermal infrared imager through a temperature control switch, and the thermal infrared imager is further provided with an alarm in a matched mode. The filling type maintenance device is used for rapid repairing of the cracking part of the concrete structure in winter in the cold region.

Description

technical field [0001] The invention belongs to the technical field of civil engineering, and in particular relates to a filling maintenance device and method for repairing concrete cracks in cold regions in winter. Background technique [0002] With the development of the construction industry, concrete is more and more used in hydraulic engineering, road engineering, culvert tunnels, bridges and building structures due to its excellent quality and low cost. Similarly, due to the poor tensile and shear resistance of concrete, the concrete is prone to cracking, resulting in insufficient strength development and a decline in durability, thereby affecting the normal use of concrete. There are many main methods for repairing concrete cracks, mainly including grouting method, dry embedding method, nailing method, polymer impregnation method (gravity infiltration and vacuum infiltration), surface sealing method and so on. Among them, the surface sealing method is the most common...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G23/02E02B3/16E01D22/00E01C23/09E21D11/10C04B40/02
CPCE04G23/0211E02B3/16E01D22/00E01C23/098E21D11/105C04B40/0263
Inventor 刘雨时王伟田伟辰
Owner HARBIN INST OF TECH
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