CN109653379B - Grouting pretreatment construction method for fabricated concrete building - Google Patents
Grouting pretreatment construction method for fabricated concrete building Download PDFInfo
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- CN109653379B CN109653379B CN201811591282.1A CN201811591282A CN109653379B CN 109653379 B CN109653379 B CN 109653379B CN 201811591282 A CN201811591282 A CN 201811591282A CN 109653379 B CN109653379 B CN 109653379B
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- 238000010276 construction Methods 0.000 title claims abstract description 58
- 239000004567 concrete Substances 0.000 title claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 53
- 238000009736 wetting Methods 0.000 claims abstract description 24
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 239000011440 grout Substances 0.000 claims description 57
- 239000002002 slurry Substances 0.000 claims description 32
- 230000007613 environmental effect Effects 0.000 claims description 15
- 238000004891 communication Methods 0.000 claims description 13
- 239000000523 sample Substances 0.000 claims description 13
- 239000003566 sealing material Substances 0.000 claims description 6
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- 238000000889 atomisation Methods 0.000 claims description 3
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- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
- E04B1/4114—Elements with sockets
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
- E04B1/4114—Elements with sockets
- E04B1/4121—Elements with sockets with internal threads or non-adjustable captive nuts
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
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- Mechanical Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention discloses a grouting pretreatment construction method for an assembled concrete building, which comprises the following steps of hoisting and fixing prefabricated parts, sealing edges of the prefabricated parts and a bottom plate, introducing water vapor by adopting an ultrasonic atomizer to check the blocking condition of the prefabricated parts before grouting construction, and carrying out grouting surface wetting treatment, wherein the wetting treatment comprises the following steps: s1, continuously introducing water vapor from the pulp inlet at the middle of the bottom of the prefabricated part through an ultrasonic atomizer, plugging the pulp inlet with a rubber plug after the water vapor emerges from the pulp inlet and outlet, and stopping introducing the steam after the pulp inlet and outlet is stabilized for a period of time; and S2, standing for a period of time, and checking the wetting condition of the bottoms of the air outlet holes at the two ends of the communicating cavity through an endoscope to determine whether water vapor needs to be introduced again. The method disclosed by the invention is simple to operate, can effectively check the blocking and edge sealing conditions, moistens and adjusts the temperature of the communicated cavity of the grouting area, ensures the grouting effect, ensures the connection quality of the prefabricated parts and improves the construction efficiency.
Description
Technical Field
The invention belongs to the technical field of engineering construction, and particularly relates to a construction method for pre-treating assembled concrete building grouting.
Background
At present, the prefabricated concrete structure has become the trend of future building development, and the state has developed the prefabricated concrete building application technical regulation, the prefabricated building evaluation standard and related matched national standard atlas. Along with the improvement of the acceptance of the fabricated concrete structure in all social circles, the grouting connection technology of the steel sleeve is more and more widely applied, and the grouting quality has a vital influence on the quality safety of an engineering structure in the grouting construction process. How to wet the communication cavity of the prefabricated part and the bottom plate before grouting directly restricts grouting quality and the bonding performance of grouting material and the prefabricated part, and influences the integrity of a building structure.
After the hoisting of the prefabricated part is finished, when the prefabricated part is placed in an outdoor dry or high-temperature environment, if the prefabricated part and the communication cavity are not wetted before grouting, grouting is directly performed, water in grouting material can be absorbed by a concrete base surface, the grouting resistance is increased, the slurry water can be quickly dissipated, the grouting pressure is increased, the requirement on edge sealing is increased, the phenomena of pipe blockage, edge sealing material crack and the like are easy to occur on site, and great inconvenience is brought to site construction; the greater the risk of under-filling. If direct through advance the grout hole and pour into bright water moist, can't carry out effectual moist to prefabricated component's lower surface and top surface, because the base face generally can carry out the chisel hair and handle, groove department has ponding to remain, carries out the slip casting this moment, may cause the slurry segregation layering, seriously influences the quality of grout material, adopts bright water moist moreover, can cause very big waste to the water resource, goes against with the theory of the green construction of the green building materials of assembly type building.
Chinese patent CN105804410A discloses a pressure grouting method of separate bins for vertical connection of an assembled concrete structure, which ensures the grouting density by enabling grout to overcome the self gravity and the friction force between the grout and a columnar grouting cavity by pressure to overflow the whole cavity from bottom to top; independent bin areas are reasonably arranged according to the grouting height, and grouting in different areas can be carried out, so that the grouting construction efficiency can be improved.
In addition, due to the fact that technical levels of existing component factories are different, phenomena that a slurry inlet and a slurry outlet are formed in a construction site and corrugated pipes are blocked are common, bending degrees of corrugated pipes in individual prefabricated components are serious, plugging conditions are generally detected in the construction site in an iron wire inserting and tamping mode, when the corrugated pipes are bent seriously, whether the corrugated pipes are blocked cannot be accurately detected, the method is rough, accuracy is poor, misjudgment is easy to occur, the slurry outlet is found to be blocked and cannot discharge slurry when grouting construction is started, emergency pipeline dredging needs to be carried out, even a base sealing layer needs to be chiseled, grouting materials in the prefabricated components are flushed, then the slurry outlet is hoisted again to seal the edges, great trouble is brought to site construction, and construction period is delayed.
According to the JGJ355-2015 steel bar sleeve grouting connection application technical specification, sleeve grouting construction is generally carried out under the condition that the environmental temperature is not lower than 5 ℃, but under the influence of air temperature and construction period progress, practical engineering can be used for low-temperature sleeve grouting below 5 ℃, requirements are provided for meeting the requirements of low-temperature construction, and low-temperature sleeve grouting materials are developed by vast research and production units in succession.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to solve the problems in the prior art, and designs a construction method for the grouting pretreatment of the fabricated concrete building, wherein an ultrasonic atomizer is adopted to generate water vapor to carry out wetting pretreatment on a grouting area (comprising the lower surface of a prefabricated part, the upper surface of a bottom plate and the interior of a sleeve), the blockage conditions of a grout inlet and a grout outlet and a corrugated pipe can be detected, and the temperature of a grouting communicating cavity can be regulated to a certain degree.
The purpose of the invention is realized by the following steps: a construction method for pre-treating assembled concrete building grouting comprises the following steps:
(1) completing hoisting and fixing of the prefabricated part and edge sealing of the prefabricated part and the bottom plate; a grouting sleeve is arranged in the prefabricated part, and a grout inlet, a grout outlet and a gas outlet are formed in the grouting sleeve; air outlet holes are formed in two ends of a communication cavity between the prefabricated part and the bottom plate;
(2) the ultrasonic atomizer is connected with a grout inlet at the bottom of a grouting sleeve at the middle of the prefabricated part, water vapor is continuously introduced into the prefabricated part by taking the grout inlet as an air inlet, and the blockage condition of the prefabricated part is checked by observing the steam bleeding conditions of other grout inlets and grout outlets;
(3) when water vapor emerges from other slurry inlets and slurry outlets and the prefabricated part is confirmed to be not blocked, the slurry inlet and the slurry outlet with the steam emerging are blocked by a rubber plug; continuously introducing water vapor into the prefabricated part to moisten the prefabricated part, and stopping introducing the vapor after the prefabricated part is stabilized for a period of time;
(4) after standing for a period of time, the wetting condition and the wetting degree of the bottoms of the air outlet holes at the two ends of the communicating cavity are examined through an endoscope, and whether water vapor needs to be introduced again or not is determined.
By adopting the grouting pretreatment construction method, whether the grout inlet and the grout outlet and the corrugated pipe are blocked can be detected before grouting, whether the sealing performance is good or not can be checked, the communication cavity of the grouting area can be effectively wetted, particularly the top surface of the grouting area can be wetted, in addition, the preheating treatment of the communication cavity can be realized by adjusting the temperature and the humidity of water vapor generated by the ultrasonic atomizer, the grouting effect is ensured, the connection quality of prefabricated parts is ensured, and the grouting pretreatment construction method has the advantages of high construction efficiency, good quality and simplicity in operation.
Preferably, the joints of the prefabricated parts and the bottom plate are filled with elastic waterproof sealing materials and sealed in a mortar-setting mode. This scheme of adoption guarantees more firm connected effect between prefabricated component and the bottom plate, and guarantees waterproof sealing nature.
Preferably, the water used for wetting meets the water standard for concrete and is detected before use. The concrete water standard is used to ensure the durability of the concrete.
Preferably, the flow rate of the water vapor of the ultrasonic atomizer is humidification amount, and the humidification amount ranges from: 0-60 Kg/h, the temperature of the introduced water vapor can be adjusted, and the temperature range is as follows: 5 ℃ to 70 ℃. The humidification quantity and the temperature can be adjusted, the operation is convenient, the temperature of a communication cavity between the prefabricated part and the bottom plate can be adjusted according to the environmental temperature, the appropriate humidification speed is adjusted, the pretreatment speed is accelerated, and large-scale electric auxiliary heat insulation and other supporting maintenance measures are not needed.
Preferably, the air duct of the ultrasonic atomizer is a flexible plastic hose, the diameter range is 1 mm-15 mm, and the length range is: 0.3m to 3 m. The plastic hose of this scheme of adoption can conveniently be connected with the grout inlet, and guarantees that the humidification volume satisfies the demand.
Preferably, the endoscope is a steerable fiber optic scope, and the probe diameter ranges from: 1 mm-15 mm, the length range is: 0.3 m-3 m, the probe insertion tube is made of tungsten wires and stainless steel, the probe can be shot at 360 degrees, and the probe is provided with an anti-atomization device. The humidity degree of the prefabricated part and the communicated cavity can be checked in a multi-angle range by adopting the guidable optical fiber mirror, and the antifogging device can avoid the influence of water vapor.
Preferably, in the step (2), the humidifying amount of the ultrasonic atomizer can be adjusted to be maximum, the humidifying amount is controlled to be 20 Kg/h-60 Kg/h, and the blockage condition is checked through the steam bleeding condition of the pulp inlet and the pulp outlet. The adoption of a larger humidifying quantity can quickly check whether the pulp outlet is blocked or not.
Preferably, in the step (3), the flow rate, the temperature and the time of the introduced water vapor are determined according to the ambient temperature and the length of the prefabricated part:
when the environmental temperature is lower than 5 ℃, the humidification amount of the atomizer is controlled to be 1 Kg/h-20 Kg/h, the temperature is controlled to be 20 ℃ to 65 ℃, and the steam introducing time is 2 min-20 min;
when the ambient temperature is 5-15 ℃, the humidification amount of the atomizer is controlled to be 1-25 Kg/h, the temperature is controlled to be 35-50 ℃, and the steam-introducing time is 1-25 min;
the environmental temperature is 15-25 ℃, the humidification quantity of the atomizer is controlled to be 1-30 Kg/h, the temperature is controlled to be 10-35 ℃, and the steam-introducing time is 1-20 min;
the environmental temperature is 25-35 ℃, the humidification quantity of the atomizer is controlled at 2-30 Kg/h, the temperature is controlled at 20-35 ℃, and the steam-introducing time is 1-20 min;
the environmental temperature is higher than 35 ℃, the humidifying amount of the atomizer is controlled to be 5 Kg/h-30 Kg/h, the temperature of the atomizer is controlled to be 5-20 ℃, and the steam-introducing time is 5 min-30 min.
The temperature is unfavorable for the grout construction when crossing excessively, when the temperature is too high steam volatilizees easily also does not benefit to the grout construction, keeps this scheme to select suitable atomizing temperature and humidification volume according to temperature and time length, can adjust UNICOM chamber temperature between prefabricated component and the bottom plate faster and make it keep suitable moist degree, avoids ponding to produce, is favorable to the grout construction, and guarantees the grout quality.
Preferably, in the step (4), the standing time is as follows: 1 min-10 min. After standing for 1-10 min, the water vapor is used for fully contacting and wetting the grouting surface, and then detection is carried out, so that the detection result is more accurate, and the influence of the water vapor on the sight line can be further reduced.
Preferably, in the step (4), if the degree of wetting is not sufficient, water vapor with a corresponding temperature is continuously introduced according to the ambient temperature, and the steam introduction time is as follows: 1 min-10 min. Experiments show that after the step of introducing steam in the step (3), a good wetting effect can be basically ensured, if the wetting effect is not good, the steam is introduced again for 1min to 10min, a good effect can be achieved, and no obvious water accumulation is ensured.
Compared with the prior art, the invention has the following advantages:
firstly, the invention not only can effectively wet the communicating cavity between the prefabricated part and the bottom plate, but also can avoid generating obvious accumulated water, can ensure that the grouting is smoother and fuller, and ensures the quality of the engineering structure.
Secondly, the invention can simply and effectively detect the blockage of the corrugated pipe and the grout inlet and outlet before grouting construction, and avoids misjudgment easily occurring when the blockage is detected by the traditional iron wire tamping mode.
The temperature of the communication cavity between the prefabricated part and the bottom plate can be adjusted according to the environmental temperature, and the influence of the environmental temperature on the progress of the project is avoided.
Fourthly, the method is simple to operate, low in equipment cost, water-saving and capable of improving construction efficiency and quality.
Drawings
Fig. 1 is a front view of a prefabricated part installation structure according to an embodiment of the present invention.
Fig. 2 is a side view of a prefabricated part installation structure according to an embodiment of the present invention.
In the figure: 1. prefabricating a component; 2. a pulp outlet; 3. a rubber plug; 4. separating the base slurry into bins; 5. an air outlet; 6. a base plate; 9. water vapor; 10. a sleeve; 11. reinforcing steel bars; 12. a pulp inlet; 13. sealing edges by base mortar; 14. an ultrasonic atomizer; 15. an elastic waterproof sealing material; 16. a communication cavity.
Detailed Description
A construction method for pre-treating assembled concrete building grouting comprises the following steps:
(1) completing hoisting and fixing of the prefabricated part 1 and edge sealing of the prefabricated part 1 and the bottom plate 6; the prefabricated part is internally provided with a grouting sleeve 10 and a reinforcing steel bar 11, and the grouting sleeve 10 is provided with a grout inlet 12 and a grout outlet 2; and air outlet holes are arranged at two ends of the communication cavity 16 between the prefabricated part 1 and the bottom plate 6. The installation structure of the prefabricated part 1 is schematically shown in FIGS. 1-2.
In the figure, a prefabricated part 1 is vertically arranged, and a bottom plate 6 is horizontally arranged; preferably, the left side surface of a communication cavity 16 at the joint of the prefabricated part 1 and the bottom plate 6 is filled with an elastic waterproof sealing material 15, the right side surface of the communication cavity 16 is sealed by a base mortar edge 13, and the base mortar sub-bin 4 is arranged. The grouting sleeve 10 pre-embedded in the prefabricated part 1 is also vertically arranged, the grout inlet is positioned at the bottom of the sleeve 10, and the grout outlet 2 is positioned at the top of the sleeve 10.
(2) The ultrasonic atomizer 14 is connected with a grout inlet 12 at the bottom of the grouting sleeve 10 at the middle of the prefabricated part 1, water vapor 9 is continuously introduced into the prefabricated part 1 by taking the grout inlet as an air inlet, and the blockage condition of the prefabricated part is checked by observing the steam emission conditions of other grout inlets 12 and grout outlets 2.
Preferably, the water used for wetting meets the water standard for concrete and is detected before use.
Preferably, the amount of humidification of the ultrasonic atomizer is controlled to be 20Kg/h to 60Kg/h, more preferably 40 Kg/h.
If part of the slurry inlet and outlet ports do not emit steam or the sealed edge part emits steam, dredging or hoisting again and then introducing steam through the atomizer for inspection; if the steam emerges from the slurry inlet and the slurry outlet, which indicates that the slurry inlet and the slurry outlet are not blocked, the next operation can be carried out.
(3) When water vapor emerges from other slurry inlets and slurry outlets and the prefabricated part is determined to be not blocked, the rubber plug 3 is used for blocking the slurry inlet and the slurry outlet with the steam emerging; and continuously introducing water vapor into the prefabricated part to moisten the prefabricated part, and stopping introducing the vapor after the prefabricated part is stabilized for a period of time.
Preferably, the flow rate of the water vapor of the ultrasonic atomizer is humidification amount, and the humidification amount ranges from: 0-60 Kg/h, the temperature of the introduced water vapor can be adjusted, and the temperature range is as follows: 5 ℃ to 70 ℃. The humidification quantity and the temperature can be adjusted, the operation is convenient, the temperature of a communication cavity between the prefabricated part and the bottom plate can be adjusted according to the environmental temperature, the appropriate humidification speed is adjusted, the pretreatment speed is accelerated, and large-scale electric auxiliary heat insulation and other supporting maintenance measures are not needed. The air duct of ultrasonic nebulizer is flexible plastic hose, and the diameter scope is 5 mm-10 mm, and the length scope is: 0.5 m-2 m. The plastic hose can be conveniently connected with the pulp inlet, and the humidifying quantity is ensured to meet the requirement.
Preferably, water vapor is introduced from the bottom middle pulp inlet through an ultrasonic atomizer, the rest pulp inlets and the rest pulp outlets emit vapor, a rubber plug is used for plugging in time, before the last pulp outlet is plugged, the pressure is stabilized for a period of time according to the ambient temperature, when the ambient temperature is lower than 5 ℃, the humidification amount of the atomizer is controlled at 20Kg/h, the temperature is controlled at about 65 ℃, and the vapor introduction time is 15 min; when the ambient temperature is 5-15 ℃, the humidification amount of the atomizer is controlled at 16Kg/h, the temperature is controlled at 35-50 ℃, and the steam-introducing time is 12 min; the ambient temperature is 15-25 ℃, the humidification amount of the atomizer is controlled at 20Kg/h, the temperature is controlled at 20-35 ℃, and the steam-introducing time is 12 min; the environmental temperature is 25-35 ℃, the humidification amount of the atomizer is controlled at 20Kg/h, the temperature is controlled at 20-30 ℃, and the steam-introducing time is about 10 min; the environmental temperature is higher than 35 ℃, the humidifying amount of the atomizer is controlled at 20Kg/h, the temperature of the atomizer is controlled at 20 ℃, and the steam introducing time is about 10 min.
(4) Standing for 1-10 min, and examining the bottom wetting condition and the wetting degree of the air outlet holes at the two ends of the communicating cavity through an endoscope to determine whether water vapor needs to be introduced again.
Preferably, the endoscope is a steerable fiber optic scope, and the probe diameter ranges from: 1 mm-15 mm, the length range is: 0.3 m-3 m, the probe insertion tube is made of tungsten wires and stainless steel, the probe can be shot at 360 degrees, and the probe is provided with an anti-atomization device. The humidity degree of the prefabricated part and the communicated cavity can be checked in a multi-angle range by adopting the guidable optical fiber mirror, and the antifogging device can avoid the influence of water vapor.
And (3) opening a probe part heating anti-fog device of the endoscope during examination, if the bottom plate groove is found to have condensed water, grouting after standing for ten minutes, and if the wetting degree is found to be insufficient, introducing water vapor through the atomizer again.
And after the wetting treatment is finished, grouting construction is carried out.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "left," "right" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Example 1
In a certain building engineering, an assembled concrete shear wall structure system is mainly adopted, and before grouting construction, iron wires are used for simply detecting whether a grout inlet and a grout outlet are blocked or not, so that obvious abnormity is found. During grouting construction, two grout outlets can not discharge grout, after emergency dredging is carried out on site, grout still can not be discharged, a grout sealing layer can only be chiseled, a high-pressure water gun is used for washing out grouting materials in the prefabricated part and hoisting and sealing edges again, great troubles are caused for site construction, and the construction period is delayed.
The construction pretreatment method comprises the following steps: after hoisting and fixing of the prefabricated part and edge sealing of the prefabricated part and a bottom plate are finished, before grouting construction, an ultrasonic atomizer 14 is connected with a slurry inlet 12 at the bottom of a grouting sleeve 10 at the middle of the prefabricated part 1, water vapor 9 is continuously introduced into the prefabricated part 1 by taking the slurry inlet as an air inlet, and the blockage condition of the prefabricated part is checked by observing the steam emission conditions of other slurry inlets 12 and other slurry outlets 2. The method can simply and effectively detect whether the grout inlet and the grout outlet are blocked by foreign matters before grouting construction, can effectively adjust on site in time, can make grouting construction simpler and more convenient, and can improve grouting quality.
Example 2
In a certain building engineering, an assembled concrete shear wall structure system is mainly adopted, due to the fact that construction is carried out in summer, the outdoor environment temperature is about 35 ℃, prefabricated parts are exposed to the sun after being hoisted, the temperature of the prefabricated parts and the temperature of a communicated cavity are high, direct grouting is carried out before wetting, slurry moisture is dissipated quickly, grouting pressure is high, pipe blockage, edge sealing material cracking and the like occur on site, and great inconvenience is brought to site construction.
The grouting pretreatment construction process of the invention is changed to: after hoisting and fixing of the prefabricated part and edge sealing of the prefabricated part and a bottom plate are finished, before grouting construction, an ultrasonic atomizer 14 is connected with a grout inlet 12 at the bottom of a grouting sleeve 10 at the middle of the prefabricated part 1, after checking and confirming that the grout inlet and the grout outlet are not blocked, water vapor is introduced from the grout inlet at the middle of the bottom, steam overflows from the other grout inlets and the grout outlets, the grout outlets are blocked by rubber plugs in time, before the last grout outlet is blocked, the humidifying amount of the atomizer is controlled at 20Kg/h, the temperature of the atomizer is controlled at 20 ℃, and the steam introducing time is about 10 min. And (3) the wetting condition of the bottoms of the air outlets at the two ends of the communicating cavity is inspected through an endoscope, the communicating cavity is found to be effectively wetted, the temperature of a grouting area is reduced, and then grouting is carried out. The grouting process is smooth, the working efficiency is greatly improved, the risk of insufficient grouting is reduced, and the connection quality of the prefabricated parts is improved.
Example 3
In a certain building engineering, a prefabricated column grouting bottom grouting construction method is adopted, and because construction in winter is carried out, the outdoor temperature is about 3 ℃, the grouting pretreatment construction process comprises the following steps: after hoisting and fixing of the prefabricated part and edge sealing of the prefabricated part and a bottom plate are finished, before grouting construction, an ultrasonic atomizer 14 is connected with a grout inlet 12 at the bottom of a grouting sleeve 10 at the middle of the prefabricated part 1, after checking and confirming that the grout inlet and the grout outlet are not blocked, water vapor is introduced from the grout inlet at the middle of the bottom, steam overflows from the other grout inlets and the grout outlets, a rubber plug is used for plugging in time, before the last grout outlet is blocked, the humidifying amount of the atomizer is controlled to be 20Kg/h, the temperature of the atomizer is controlled to be 65 ℃, and the steam introducing time is about 15 min. Through the wetting condition of the bottoms of the air outlets at the two ends of the communicating cavity, the communicating cavity is found to be effectively wetted, the temperature of a grouting area is increased, and then grouting is carried out. After the hot steam is adopted for wetting, grouting is smooth, the strength of the grouting material can reach the specified strength as soon as possible, the construction efficiency is greatly improved, and the safety quality of an engineering structure is improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The construction method for the assembled concrete building grouting pretreatment is characterized by comprising the following steps:
(1) completing hoisting and fixing of the prefabricated part and edge sealing of the prefabricated part and the bottom plate; a grouting sleeve is arranged in the prefabricated part, and a grout inlet and a grout outlet are formed in the grouting sleeve; air outlet holes are formed in two ends of a communication cavity between the prefabricated part and the bottom plate;
(2) the ultrasonic atomizer is connected with a grout inlet at the bottom of a grouting sleeve at the middle of the prefabricated part, water vapor is continuously introduced into the prefabricated part by taking the grout inlet as an air inlet, and the blockage condition of the prefabricated part is checked by observing the steam bleeding conditions of other grout inlets and grout outlets;
(3) when water vapor emerges from other slurry inlets and slurry outlets and the prefabricated part is confirmed to be not blocked, the slurry inlet and the slurry outlet with the steam emerging are blocked by a rubber plug; continuously introducing water vapor into the prefabricated part to moisten the prefabricated part, and stopping introducing the vapor after the prefabricated part is stabilized for a period of time;
(4) after standing for a period of time, the wetting condition and the wetting degree of the bottoms of the air outlet holes at the two ends of the communicating cavity are examined through an endoscope, and whether water vapor needs to be introduced again or not is determined.
2. The prefabricated concrete building grouting pretreatment construction method of claim 1, wherein the joints of the prefabricated parts and the bottom plate are filled with elastic waterproof sealing materials and edge sealing is performed in a mortar setting mode.
3. The prefabricated concrete building grouting pretreatment construction method according to claim 1, wherein water used for wetting satisfies a concrete water usage standard.
4. The prefabricated concrete building grouting pretreatment construction method according to claim 1, wherein the ultrasonic atomizer can adjust the humidification amount, and the humidification amount range is as follows: 0-60 Kg/h, the temperature of the introduced water vapor can be adjusted, and the temperature range is as follows: 5 ℃ to 70 ℃.
5. The prefabricated concrete building grouting pretreatment construction method according to claim 1, wherein the air duct of the ultrasonic atomizer is a bendable plastic hose, the diameter range is 1 mm-15 mm, and the length range is as follows: 0.3m to 3 m.
6. The prefabricated concrete building grouting pretreatment construction method according to claim 1, wherein the endoscope is a steerable fiber optic mirror, and the diameter range of the probe is as follows: 1 mm-15 mm, the length range is: 0.3 m-3 m, the probe insertion tube is made of tungsten wires and stainless steel, the probe can be shot at 360 degrees, and the probe is provided with an anti-atomization device.
7. The pre-grouting construction method of an assembled concrete building according to claim 1, wherein the humidification amount of the ultrasonic atomizer in the step (2) is controlled to be 20 Kg/h-60 Kg/h, and the blockage condition is checked through the steam bleeding condition of the slurry inlet and the slurry outlet.
8. The prefabricated concrete building grouting pretreatment construction method according to claim 1, wherein the flow rate, the temperature and the time of introducing the water vapor are determined according to the ambient temperature and the length of the prefabricated part in the step (3):
when the environmental temperature is lower than 5 ℃, the humidification amount of the atomizer is controlled to be 1 Kg/h-20 Kg/h, the temperature is controlled to be 20 ℃ to 65 ℃, and the steam introducing time is 2 min-20 min;
when the ambient temperature is 5-15 ℃, the humidification amount of the atomizer is controlled to be 1-25 Kg/h, the temperature is controlled to be 35-50 ℃, and the steam-introducing time is 1-25 min;
the environmental temperature is 15-25 ℃, the humidification quantity of the atomizer is controlled to be 1-30 Kg/h, the temperature is controlled to be 10-35 ℃, and the steam-introducing time is 1-20 min;
the environmental temperature is 25-35 ℃, the humidification quantity of the atomizer is controlled at 2-30 Kg/h, the temperature is controlled at 20-35 ℃, and the steam-introducing time is 1-20 min;
the environmental temperature is higher than 35 ℃, the humidifying amount of the atomizer is controlled to be 5 Kg/h-30 Kg/h, the temperature of the atomizer is controlled to be 5-20 ℃, and the steam-introducing time is 5 min-30 min.
9. The fabricated concrete building grouting pretreatment construction method according to any one of claims 1 to 8, wherein in the step (4), the standing time is as follows: 1 min-10 min.
10. The prefabricated concrete building grouting pretreatment construction method according to any one of claims 1 to 8, wherein in the step (4), if the degree of wetting is not enough, water vapor at a corresponding temperature is continuously introduced according to the ambient temperature, and the steam introduction time is as follows: 1 min-10 min.
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| CN110107104B (en) * | 2019-05-10 | 2021-04-16 | 中铁六局集团有限公司 | Winter construction method for assembled building wallboard sleeve connection |
| CN110700589A (en) * | 2019-10-22 | 2020-01-17 | 武汉合创炬盛科技有限公司 | Method for improving compactness of assembly type concrete grouting connection node |
| CN111779275A (en) * | 2020-07-14 | 2020-10-16 | 武汉合创炬盛科技有限公司 | Edge sealing construction pretreatment method for prefabricated concrete building communicating cavity |
| CN112404050A (en) * | 2020-11-10 | 2021-02-26 | 武汉合创炬盛科技有限公司 | Treatment method for solving blockage of communicating cavity of fabricated concrete building |
| CN112431308A (en) * | 2020-11-27 | 2021-03-02 | 湖南大学 | Method for semi-grouting sleeve grouting cavity wetting and vibrating grouting construction |
| CN112922190B (en) * | 2021-03-26 | 2022-04-19 | 福建省万林建设管理有限公司 | Assembled wall body mounting structure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587674A (en) * | 2012-03-14 | 2012-07-18 | 中国核工业华兴建设有限公司 | Method for grouting pre-stress duct |
| CN203399697U (en) * | 2013-06-07 | 2014-01-22 | 四川烟叶复烤有限责任公司会理复烤厂 | Supersonic atomizing device for tobacco dampening |
| CN207673014U (en) * | 2017-11-30 | 2018-07-31 | 中建八局第三建设有限公司 | A kind of prefabrication prefabricated post grout sealing device |
| CN108532834A (en) * | 2018-06-22 | 2018-09-14 | 中国五冶集团有限公司 | A kind of assembled architecture frame column reperfusion structure |
| CN108956047A (en) * | 2018-07-28 | 2018-12-07 | 宁波联城住工科技有限公司 | The spillage detection device and method of grout sleeve |
| CN108982535A (en) * | 2018-08-01 | 2018-12-11 | 昆山市建设工程质量检测中心 | Sleeve grouting plumpness detection method based on endoscope three-dimensional dimension measuring technique |
-
2018
- 2018-12-20 CN CN201811591282.1A patent/CN109653379B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587674A (en) * | 2012-03-14 | 2012-07-18 | 中国核工业华兴建设有限公司 | Method for grouting pre-stress duct |
| CN203399697U (en) * | 2013-06-07 | 2014-01-22 | 四川烟叶复烤有限责任公司会理复烤厂 | Supersonic atomizing device for tobacco dampening |
| CN207673014U (en) * | 2017-11-30 | 2018-07-31 | 中建八局第三建设有限公司 | A kind of prefabrication prefabricated post grout sealing device |
| CN108532834A (en) * | 2018-06-22 | 2018-09-14 | 中国五冶集团有限公司 | A kind of assembled architecture frame column reperfusion structure |
| CN108956047A (en) * | 2018-07-28 | 2018-12-07 | 宁波联城住工科技有限公司 | The spillage detection device and method of grout sleeve |
| CN108982535A (en) * | 2018-08-01 | 2018-12-11 | 昆山市建设工程质量检测中心 | Sleeve grouting plumpness detection method based on endoscope three-dimensional dimension measuring technique |
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