CN113653355B - Construction method for plugging reserved hole of lower laminate of closed space - Google Patents
Construction method for plugging reserved hole of lower laminate of closed space Download PDFInfo
- Publication number
- CN113653355B CN113653355B CN202110884974.0A CN202110884974A CN113653355B CN 113653355 B CN113653355 B CN 113653355B CN 202110884974 A CN202110884974 A CN 202110884974A CN 113653355 B CN113653355 B CN 113653355B
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- hole
- grouting
- steel template
- pouring
- overflow pipe
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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
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0203—Arrangements for filling cracks or cavities in building constructions
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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
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
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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
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0203—Arrangements for filling cracks or cavities in building constructions
- E04G23/0211—Arrangements for filling cracks or cavities in building constructions using injection
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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
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0288—Repairing or restoring floor slabs
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The invention discloses a construction method for plugging a reserved hole of a lower laminate of a closed space, which belongs to the field of building construction, wherein the construction method comprises the steps of pre-treating, roughening, cleaning and washing the surface, binding chiseled steel bars, bonding sponge adhesive tapes on the inner wall of the reserved hole, mounting a steel template at the bottom of the reserved hole, arranging grouting holes and pipeline holes on the steel template, wherein the grouting holes and the pipeline holes are positioned on the diagonal line of the steel template, and mounting a grout overflow pipe on the pipeline hole; pouring and molding, pouring concrete which is higher than the outer side by one grade to the reserved hole, when the pouring height is higher than the grout overflow pipe, installing a first sealing piece in the grout overflow pipe, stopping grouting, taking out the pouring pipe downwards, moving a baffle piece laterally, cleaning the inner wall of the grouting hole upwards, installing a second sealing piece upwards, and finishing the bottom sealing of the grouting hole; curing to standard time, and dismantling the steel template; the invention solves the technical problems that whether the reserved hole is full or not can not be judged visually in a closed space, and the mould hanging construction difficulty is high.
Description
Technical Field
The invention belongs to the field of building construction, and particularly relates to a construction method for plugging reserved holes of a lower layer plate of a closed space.
Background
In the building structure work progress, often reserve the construction entrance to a cave on the floor because of the construction needs, the reservation entrance to a cave of upper plate can adopt suspended formwork and concrete placement convenient, when reserving the entrance to a cave at the lower floor slab of enclosure space, the difficult construction of sealing of entrance to a cave, and the quality is difficult to control.
At present generally adopt to decorate fossil fragments and add the panel and seal, or the tradition hangs the mould and pours, decorate the way long-time fossil fragments easy corrosion and surperficial seam crossing easy crack, hang the big and difficult pouring of mould construction degree of difficulty and concrete, can't audio-visual judgement concrete is full of the entrance to a cave cross-section, and the quality can't be guaranteed, in order to accomplish that the construction is simple and guarantee the quality of pouring, consequently, propose this kind of enclosure space under plywood reservation entrance to a cave shutoff construction method to the above-mentioned problem.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in a closed space, whether the reserved hole is full or not can not be judged visually, and the difficulty of mould hanging construction is high.
In order to solve the technical problems, the inventor obtains the technical scheme of the invention through practice and summary, and the invention discloses a construction method for plugging reserved holes of lower laminates of a closed space, which comprises the following steps:
s1, pretreatment
Firstly, chiseling and cleaning the periphery of a reserved hole and the concrete surface of the cross section of a floor slab, and cleaning with clean water;
restoring and binding the chiseled steel bars, and additionally driving bar planting glue into the weak steel bars to enhance the connection strength;
thirdly, paving a sponge adhesive tape on the inner wall of the reserved hole, and adhering the sponge adhesive tape to the inner wall of the reserved hole;
fourthly, erecting a steel template at the bottom of the reserved hole, arranging a positioning hole on the steel template, installing an expansion bolt in the positioning hole, and driving the expansion bolt fixing steel template into the bottom of the floor slab section;
step five, before the step four, grouting holes and pipeline holes are formed in the steel template, and the grouting holes and the pipeline holes are located on the diagonal line of the steel template;
and sixthly, installing a slurry overflow pipe on the pipeline hole, wherein the slurry overflow pipe is fixedly connected with the steel template, and the height of the upper end of the slurry overflow pipe is 10-20 mm higher than the height of the cross section of the floor slab.
S2, pouring and forming
Seventhly, installing pouring pipe pouring concrete upwards from the grouting hole, wherein the concrete grade strength is higher than that of the micro-expansion grouting material of the first-grade concrete of the section of the floor slab, and vibrating and pouring are carried out during pouring;
step eight, when the pouring height is higher than that of the grout overflow pipe, concrete slurry overflows from the bottom of the steel template, pouring is finished, a first sealing piece is installed in the grout overflow pipe, sealant is injected into the first sealing piece for sealing and grouting is stopped, the pouring pipe is taken out downwards, meanwhile, a baffle piece is moved laterally, the baffle piece is installed in the steel template before the step four, the inner wall of the grouting hole is cleaned upwards, a second sealing piece is installed upwards, and bottom sealing of the grouting hole is finished;
and step nine, maintaining to standard time, dismantling the nut on the expansion bolt, dismantling the steel template and polishing the seams and the orifices around the reserved hole.
And furthermore, the expansion bolts in the fourth step are arranged around the bottom of the steel moulding plate.
Furthermore, the slurry overflow pipe is made of a PVC material with the diameter of 20 mmPVC.
Furthermore, the first sealing part comprises an upper guide part and a lower bottom, the lower bottom is disc-shaped, the lower bottom is matched with the bottom of the pipeline hole, a water-stopping adhesive tape is bonded on the lower bottom, the lower bottom is clamped with the pipeline hole, the upper end of the upper guide part is hung on the pipe orifice of the slurry overflow pipe through an end cover, the lower end of the upper guide part is an inverted funnel opening, and the bottom end of the upper guide part is matched with the pipe diameter of the inner pipe of the slurry overflow pipe.
Furthermore, a transverse groove is formed in the bottom end of the steel template, a lower plate is installed outside the transverse groove and detachably connected with the steel template, a baffle piece is installed in the transverse groove and suitable for sliding in the transverse groove, the transverse groove is communicated with the grouting hole, and the transverse movement of the baffle piece is suitable for blocking the grouting hole.
Furthermore, the lower end of the baffle piece is provided with a pushing column, the lower plate is provided with a transition groove, and the lower end of the pushing column extends out of the transition groove.
Furthermore, a position hole is formed in the baffle piece, the position hole corresponds to the position, corresponding to the position, of the lower end of the grouting hole when the baffle piece moves to the lower end of the grouting hole, a bottom film is arranged in the position hole, the position hole is a threaded hole, a sealing column is suitable for being installed under the bottom film, the sealing column is suitable for penetrating through the bottom film to extend upwards into the grouting hole when concrete is initially set, and the sealing column is in threaded connection with the position hole.
Further, in the ninth step, the upper guide part should be removed before the sealant is solidified, and the lower bottom should be removed after the sealant is solidified;
before the nuts of the expansion bolts are removed, the lower plate, the sealing columns and the baffle pieces are sequentially removed, the steel template is removed, and the bottom ends of the pipeline holes and the grouting holes are leveled.
Compared with the prior art, the invention can obtain the following technical effects:
the invention aims at the problems that in the prior art, the grout overflow pipe is arranged on the steel template to judge whether the pouring of the reserved hole is full, and when the concrete is higher, the grout overflow pipe overflows and can be blocked;
secondly, designing a first sealing piece, wherein the lower bottom part of the first sealing piece is sealed with the bottom end of the pipeline hole, and the upper guide part of the first sealing piece guides the sealant to slowly flow along the inner wall of the slurry overflow pipe to fill the inner part of the slurry overflow pipe;
and secondly, the transverse movement is realized through the baffle piece to block the removed pouring pipe, and the bottom of the grouting hole is jacked up through the sealing column, so that the sealing effect is completed.
The invention has simple structure, and can realize the plugging of the reserved hole opening by non-keel or suspended formwork in sequence.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of the operation of the present invention;
FIG. 2 is a top view of the steel form of the present invention;
FIG. 3 is a cross-sectional view of the first closure member installed in the grout pipe of the present invention;
FIG. 4 is a cross-sectional view of the baffle member and the lower plate at the grouting hole of the steel form of the present invention;
FIG. 5 is a cross-sectional view of the plugging of the grouting holes of the steel formwork according to the invention.
In the figure: 1. reserving a hole; 2. a floor slab cross section; 3. reinforcing steel bars; 4. a sponge tape; 5. a steel form; 6. an expansion bolt; 7. grouting holes; 8. a pipe bore; 9. a slurry overflow pipe; 10. an upper guide part; 11. a lower bottom; 12. a water stopping rubber strip; 13. a lower plate; 14. pushing the column; 15. a location hole; 16. a base film; 17. a seal post; 18. closing the wall; 19. a baffle member.
Detailed Description
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.
The application of the principles of the present invention will be further described with reference to the accompanying drawings and specific embodiments.
Example 1
As shown in fig. 1 to 5, for an embodiment of the present invention, a construction method for plugging a reserved hole of a lower deck of a closed space includes the following steps:
s1, pretreatment
Firstly, chiseling and cleaning the periphery of a reserved hole 1 and the concrete surface of a floor slab section 2, and cleaning with clean water, wherein two layers of floor slab sections 2 are arranged, and a closed wall 18 is built in the middle of each floor slab section 2;
restoring and binding the chiseled steel bars 3, and additionally driving bar planting glue into the weak steel bars 3 to enhance the connection strength;
thirdly, laying a sponge adhesive tape 4 on the inner wall of the reserved hole 1, and adhering the sponge adhesive tape 4 to the inner wall of the reserved hole 1;
fourthly, erecting a steel template 5 at the bottom of the reserved hole 1, arranging a positioning hole on the steel template 5, installing an expansion bolt 6 in the positioning hole, and driving the expansion bolt 6 to fix the steel template 5 into the bottom of the floor slab section 2;
step five, before the step four, grouting holes 7 and pipeline holes 8 are formed in the steel moulding plate 5, and the grouting holes 7 and the pipeline holes 8 are located on the diagonal line of the steel moulding plate 5;
and sixthly, installing a slurry overflow pipe 9 on the pipeline hole 8, wherein the slurry overflow pipe 9 is fixedly connected with the steel template 5, and the height of the upper end of the slurry overflow pipe 9 is 10mm higher than the height of the floor slab section by 2 mm.
S2, pouring and forming
Seventhly, installing pouring pipes for pouring concrete upwards from the inside of the grouting holes 7, wherein the concrete grade strength is a micro-expansion grouting material which is higher than that of the first-grade concrete of the floor slab section 2, and vibrating and pouring are carried out during pouring;
step eight, when the pouring height is higher than the grout overflow pipe 9, concrete grout overflows from the bottom of the steel template 5, pouring is finished, a first sealing piece is installed in the grout overflow pipe 9, sealant is injected into the first sealing piece to seal and stop grouting, the pouring pipe is taken out downwards, meanwhile, the baffle piece 19 is moved laterally, the baffle piece 19 is installed in the steel template 5 before the step four, the inner wall of the grouting hole 7 is cleaned upwards, a second sealing piece is installed upwards, and bottom sealing of the grouting hole 7 is finished;
and step nine, maintaining to standard time, removing the nut on the expansion bolt 6, removing the steel template 5 and polishing the seams and the orifices around the reserved hole 1.
And the expansion bolts 6 in the fourth step are arranged around the bottom of the steel template 5 and are provided with four groups of positioning holes. In the ninth step, the upper guide part 10 should be removed before the sealant is solidified, and the lower bottom part 11 should be removed after the sealant is solidified;
before the nuts of the expansion bolts 6 are removed, the lower plate 13, the sealing columns 17 and the baffle pieces 19 are sequentially removed, then the steel template 5 is removed, and then the bottom ends of the pipeline holes 8 and the grouting holes 7 are smoothed.
The pulp overflow pipe 9 is made of phi 20mmPVC material, and the material is simple and common.
The first sealing piece comprises an upper guide part 10 and a lower bottom part 11, the lower bottom part 11 is disc-shaped, the lower bottom part 11 is matched with the bottom of the pipeline hole 8, a water-stopping adhesive tape 12 is bonded on the lower bottom part 11, the lower bottom part 11 is clamped with the pipeline hole 8, the upper end of the upper guide part 10 is hung on the pipe orifice of the grout overflow pipe 9 through an end cover, the lower end of the upper guide part 10 is an inverted funnel opening, and the bottom end of the upper guide part 10 is matched with the pipe diameter of an inner pipe of the grout overflow pipe 9.
The bottom end of the steel moulding plate 5 is provided with a transverse groove, a lower plate 13 is arranged outside the transverse groove, the lower plate 13 is detachably connected with the steel moulding plate 5, a baffle piece 19 is arranged in the transverse groove, the baffle piece 19 is suitable for sliding in the transverse groove, the transverse groove is communicated with the grouting hole 7, and the transverse movement of the baffle piece 19 is suitable for blocking the grouting hole 7.
The lower end of the baffle piece 19 is provided with a pushing column 14, the lower plate 13 is provided with a transition groove, and the lower end of the pushing column 14 extends out of the transition groove.
The baffle piece 19 is provided with a position hole 15, the position hole 15 corresponds to the position of the baffle piece 19, which is moved to the lower end of the grouting hole 7, a bottom membrane 16 is arranged in the position hole 15, the position hole 15 is a threaded hole, a sealing column 17 is suitable for being installed below the bottom membrane 16, the sealing column 17 is suitable for penetrating through the bottom membrane 16 to extend upwards into the grouting hole 7 when the concrete is initially set, and the sealing column 17 is in threaded connection with the position hole 15.
The lower plate 13 is provided with a bottom hole consistent with the grouting hole 7 and used for inserting a pouring pipe into the reserved hole 1 for pouring.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (4)
1. A construction method for plugging reserved holes of lower laminates of a closed space is characterized by comprising the following steps:
s1, pretreatment
Firstly, chiseling and cleaning the periphery of a reserved hole (1) and the concrete surface of a floor slab section (2) and cleaning with clean water;
restoring and binding the chiseled steel bars (3), and additionally driving bar planting glue into the weak steel bars (3) to enhance the connection strength;
thirdly, laying a sponge adhesive tape (4) on the inner wall of the reserved hole (1), and bonding the sponge adhesive tape (4) with the inner wall of the reserved hole (1);
fourthly, erecting a steel template (5) at the bottom of the reserved hole (1), arranging a positioning hole on the steel template (5), installing an expansion bolt (6) in the positioning hole, and driving the expansion bolt (6) to fix the steel template (5) into the bottom of the floor slab section (2);
step five, before the step four, grouting holes (7) and pipeline holes (8) are formed in the steel template (5), and the grouting holes (7) and the pipeline holes (8) are located on the diagonal line of the steel template (5);
sixthly, installing a slurry overflow pipe (9) on the pipeline hole (8), wherein the slurry overflow pipe (9) is fixedly connected with the steel template (5), and the height of the upper end of the slurry overflow pipe (9) is 10-20 mm higher than the height of the floor slab section (2);
s2, pouring and forming
Seventhly, installing pouring pipes for pouring concrete from the inside of the grouting holes (7) to the top, wherein the concrete grade strength is higher than that of the micro-expansion grouting material of the first concrete grade of the floor slab section (2), and vibrating and pouring are carried out during pouring;
step eight, when the pouring height is higher than the grout overflow pipe (9), concrete grout overflows from the bottom of the steel template (5), pouring is finished, a first sealing piece is installed in the grout overflow pipe (9), sealant is injected into the first sealing piece to seal and stop grouting, the pouring pipe is taken out downwards, meanwhile, a baffle piece (19) is moved laterally, the baffle piece (19) is installed in the steel template (5) before the step four, the inner wall of the grouting hole (7) is cleaned upwards, a second sealing piece is installed upwards, and bottom sealing of the grouting hole (7) is finished;
the first sealing piece comprises an upper guide part (10) and a lower bottom part (11), the lower bottom part (11) is disc-shaped, the lower bottom part (11) is matched with the bottom of the pipeline hole (8), a water-stop adhesive tape (12) is bonded on the lower bottom part (11), the lower bottom part (11) is clamped with the pipeline hole (8), the upper end of the upper guide part (10) is an end cover and is hung on the pipe orifice of the slurry overflow pipe (9), the lower end of the upper guide part (10) is an inverted funnel opening, and the bottom end of the upper guide part (10) is matched with the pipe diameter of the inner pipe of the slurry overflow pipe (9);
a transverse groove is formed in the bottom end of the steel template (5), a lower plate (13) is installed outside the transverse groove, the lower plate (13) is detachably connected with the steel template (5), a baffle piece (19) is installed in the transverse groove, the baffle piece (19) is suitable for sliding in the transverse groove, the transverse groove is communicated with the grouting hole (7), and the transverse movement of the baffle piece (19) is suitable for shielding the grouting hole (7);
the lower end of the baffle piece (19) is provided with a pushing column (14), the lower plate (13) is provided with a transition groove, and the lower end of the pushing column (14) extends out of the transition groove;
a position hole (15) is formed in the baffle piece (19), the position hole (15) corresponds to the position of the baffle piece (19) moving to the lower end of the grouting hole (7), a bottom membrane (16) is arranged in the position hole (15), the position hole (15) is a threaded hole, an opening column (17) is suitable for being installed below the bottom membrane (16), the opening column (17) is suitable for penetrating through the bottom membrane (16) to extend upwards into the grouting hole (7) when the concrete is initially set, and the opening column (17) is in threaded connection with the position hole (15);
and step nine, maintaining to standard time, removing the nut on the expansion bolt (6), removing the steel template (5) and polishing the seams and the orifices around the reserved hole (1).
2. The construction method for plugging the reserved hole of the lower plate of the closed space according to claim 1, characterized in that: and the expansion bolts (6) in the fourth step are arranged around the bottom of the steel template (5).
3. The construction method for plugging the reserved hole of the lower plate of the closed space according to claim 1, which is characterized in that: the pulp overflow pipe (9) is made of phi 20mmPVC material.
4. The construction method for plugging the reserved hole of the lower plate of the closed space according to claim 1, which is characterized in that: in the ninth step, the upper guide part (10) should be removed before the sealant is solidified, and the lower bottom part (11) should be removed after the sealant is solidified;
before the nuts of the expansion bolts (6) are removed, the lower plate (13), the sealing columns (17) and the baffle pieces (19) are sequentially removed, then the steel template (5) is removed, and then the bottom ends of the pipeline holes (8) and the grouting holes (7) are leveled.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110884974.0A CN113653355B (en) | 2021-08-03 | 2021-08-03 | Construction method for plugging reserved hole of lower laminate of closed space |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110884974.0A CN113653355B (en) | 2021-08-03 | 2021-08-03 | Construction method for plugging reserved hole of lower laminate of closed space |
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| CN113653355A CN113653355A (en) | 2021-11-16 |
| CN113653355B true CN113653355B (en) | 2023-03-10 |
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| CN114412219A (en) * | 2022-01-06 | 2022-04-29 | 中国华冶科工集团有限公司 | Defect repairing method for concrete at bottom of self-supporting box of hollow floor system |
| CN115142361B (en) * | 2022-06-23 | 2023-05-05 | 中铁一局集团(广州)建设工程有限公司 | Modification method for reinforcing cantilever structure convenient for construction |
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| US5309692A (en) * | 1990-06-30 | 1994-05-10 | Nihon Mente Kaihatsu Kabushiki Kaisha | Method for injecting repairing agent into concrete construction |
| CN104674817A (en) * | 2015-02-16 | 2015-06-03 | 中交一航局第一工程有限公司 | Reverse pressing type sealing grouting preserved hole sealing and blocking method |
| CN206001126U (en) * | 2016-08-30 | 2017-03-08 | 平煤神马建工集团有限公司 | A kind of floor sealing hole sizing gasifying device |
| CN113090068A (en) * | 2021-04-23 | 2021-07-09 | 天津核海源科技发展有限公司 | Vacuum pouring process for rush-repairing deep-buried building top concrete structure under limited conditions |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205557854U (en) * | 2016-04-20 | 2016-09-07 | 中冶建工集团有限公司 | A stifled sand slip casting ware that is used for shutoff to wear wall lead screw hole |
| DE202017102732U1 (en) * | 2017-05-08 | 2018-08-09 | Philipp Gmbh | Concrete component with an opening covered by a plug and a plug for covering openings in concrete components |
| CN110145038B (en) * | 2019-04-25 | 2020-12-04 | 江苏工程职业技术学院 | Construction process for sealing waterproof coiled material through pressure grouting |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5309692A (en) * | 1990-06-30 | 1994-05-10 | Nihon Mente Kaihatsu Kabushiki Kaisha | Method for injecting repairing agent into concrete construction |
| CN104674817A (en) * | 2015-02-16 | 2015-06-03 | 中交一航局第一工程有限公司 | Reverse pressing type sealing grouting preserved hole sealing and blocking method |
| CN206001126U (en) * | 2016-08-30 | 2017-03-08 | 平煤神马建工集团有限公司 | A kind of floor sealing hole sizing gasifying device |
| CN113090068A (en) * | 2021-04-23 | 2021-07-09 | 天津核海源科技发展有限公司 | Vacuum pouring process for rush-repairing deep-buried building top concrete structure under limited conditions |
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