CN110344602A - Grouting device and grouting method suitable for slip casting armored concrete pull-out test - Google Patents
Grouting device and grouting method suitable for slip casting armored concrete pull-out test Download PDFInfo
- Publication number
- CN110344602A CN110344602A CN201910514253.3A CN201910514253A CN110344602A CN 110344602 A CN110344602 A CN 110344602A CN 201910514253 A CN201910514253 A CN 201910514253A CN 110344602 A CN110344602 A CN 110344602A
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- CN
- China
- Prior art keywords
- grouting
- slip casting
- taper support
- bar
- reinforcing bar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 238000007569 slipcasting Methods 0.000 title claims abstract description 45
- 238000007586 pull-out test Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 37
- 238000007582 slurry-cast process Methods 0.000 claims abstract description 14
- 239000002002 slurry Substances 0.000 claims description 24
- 239000004568 cement Substances 0.000 claims description 15
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims description 14
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims description 14
- 239000001095 magnesium carbonate Substances 0.000 claims description 14
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 239000011440 grout Substances 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 230000001680 brushing effect Effects 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 210000003205 muscle Anatomy 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 229910052749 magnesium Inorganic materials 0.000 claims 1
- 239000011777 magnesium Substances 0.000 claims 1
- 239000000839 emulsion Substances 0.000 abstract description 11
- 238000012360 testing method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 239000002689 soil Substances 0.000 description 3
- 229920002472 Starch Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 238000007596 consolidation process Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- VIKNJXKGJWUCNN-XGXHKTLJSA-N norethisterone Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](C)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 VIKNJXKGJWUCNN-XGXHKTLJSA-N 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The present invention discloses a kind of grouting device suitable for slip casting armored concrete pull-out test, including cross brace, taper support and slurry casting machine, wherein, cross brace includes cross bar, and the vertical bar through cross bar, vertical bar are hollow structure, are set in reinforcing bar top, cross bar is located at concrete top, for fixing vertical bar;Taper support is installed on reinforcing bar lower part, and the bottom surface of taper support is contacted with the bottom surface of concrete;The side wall of the taper support opens up grouting port, is inserted into for the Grouting Pipe of slurry casting machine.Such grouting device is simple and reliable for structure, and soap-free emulsion polymeization section is not interfered by slip casting, and slip casting pipe diameter can not change because ring shake thickness changes, convenient and efficient.Invention additionally discloses a kind of grouting methods suitable for slip casting armored concrete pull-out test.
Description
Technical field
The present invention relates to a kind of grouting devices and grouting method suitable for slip casting armored concrete pull-out test, specifically
Saying is, the device and method of slip casting is carried out using the ring shake between reinforcing bar and concrete through hole.
Background technique
Under blower foundation is the long-term wind load the effects of, localized accumulated is damaged between foundation ring and base concrete, is caused
There is visible disengagement crack to the fastening invalidation of foundation ring in concrete between foundation ring and concrete, foundation ring bottom flange is mixed
There is cavity, soil rigidity decline in solidifying soil, and pylon frequency reduces, and may influence blower normal operation.Slip casing by pressure is exactly to utilize
Air pressure or it is hydraulic curable slurries are injected into crack or hole, slurries are driven away and are split in a manner of filling, permeate and is compacted etc.
Its position is filled after seam or air and moisture in hole, reinforcing, antiseepage are achieved the purpose that after grout curing.
Research for blower foundation grouting consolidation effect needs to consider the influence of the factors such as slit width, temperature, humidity, and
Field test is at high cost, is not easy to carry out.To solve the above-mentioned problems, propose use plain bar analog basis ring, plain bar with
After staying seam slip casting between concrete block, carries out pull-out test and analyze test result.And existing grouting device is mostly directed to ground
Lower engineering, is unable to satisfy the research to foundation ring and concrete and slurry interface bond effect, can not solve steel in pull-out test
Muscle positioning is placed in the middle, the problems such as soap-free emulsion polymeization section is arranged.
Blower foundation grouting and reinforcing engineering commonly uses top-down grouting method, in slip casting reinforcing bar pull-out test, due to
It needs to be arranged soap-free emulsion polymeization section, when using grouting method from top to bottom, first is that slurries can be made by soap-free emulsion polymeization section, is unable to control viscous
The interface of section and soap-free emulsion polymeization section is tied in designated position, second is that test crack is annular, when slit width is grade, conventional slip casting
Pipe can not be inserted into carry out slip casting.
Based on the above analysis, in order to overcome the defect of existing grouting mode, thus this case is generated.
Summary of the invention
The purpose of the present invention is to provide a kind of grouting device suitable for slip casting armored concrete pull-out test and side
Method, simple and reliable for structure, soap-free emulsion polymeization section is not interfered by slip casting, and slip casting pipe diameter can not change because ring shake thickness changes
Become, it is convenient and efficient.
In order to achieve the above objectives, solution of the invention is:
A kind of grouting device suitable for slip casting armored concrete pull-out test, including cross brace, taper support and note
Starch device, wherein cross brace includes cross bar, and through the vertical bar of cross bar, vertical bar is hollow structure, is set in reinforcing bar top,
Cross bar is located at concrete top, for fixing vertical bar;Taper support is installed on reinforcing bar lower part, and the bottom surface of taper support and coagulation
The bottom surface contact of soil;The side wall of the taper support opens up grouting port, is inserted into for the Grouting Pipe of slurry casting machine.
5 times for being overlapped length and being bar diameter of above-mentioned vertical bar and reinforcing bar.
The contact position of above-mentioned taper support and reinforcing bar is provided with rubber ring.
Gap magnesium carbonate cement seal between above-mentioned taper support and concrete.
Based on the grouting method of the foregoing grouting device suitable for slip casting armored concrete pull-out test, including such as
Lower step:
Step 1, the vertical bar of cross brace is set in reinforcing bar top, taper support is installed on reinforcing bar lower part, and will note
Starch the grouting port of the Grouting Pipe insertion taper support side wall of device;
Step 2, slurries are injected into Grouting Pipe with slurry casting machine, from bottom to top slip casting, and make Grouting Pipe no more than slip casting
Liquid level slowly extracts Grouting Pipe when slurries can not continue injection, closes grouting port with rubber stopper;After certain interval of time,
Same position opens grouting port, and insertion Grouting Pipe repeats slip casting, so that slurries are full of crack;
Step 3, by whole inversion, until slurries is in semi-cured state, taper support is taken out, extra slurries are cleared up,
The ring shake that taper support is formed is sealed with medical proof fabric, and brushing magnesium carbonate cement seal crack;
Step 4, maintenance to grout curing rear taking-up cross brace and removes surface residue.
In above-mentioned steps 1, with the gap between seal with elastometic washer taper support and reinforcing bar, with magnesium carbonate cement seal taper
Gap between support and concrete.
In above-mentioned steps 2, before injecting slurries, first at magnesium carbonate cement seal smear suds, with slurry casting machine to
Air is injected in Grouting Pipe, and whether there is or not gas leak phenomenons for observation, if gas leakage, are filled up with magnesium carbonate cement, until no longer gas leakage.
After adopting the above scheme, the present invention compared to the prior art, the advantage is that:
(1) compared to traditional grouting device, present invention is generally directed to the simulation test of blower foundation grouting consolidation effect,
That is slip casting armored concrete pull-out test.Taper support and cross brace are capable of fixing reinforcing bar, are located in reinforcing bar in concrete
The heart improves test accuracy, facilitates grouting operation;
(2) present invention uses slip casting from bottom to top, and cross brace closes the reinforcing bar upper half, and slurries when slip casting is avoided to pass through nothing
Adhesive section is conducive to soap-free emulsion polymeization section needed for pull-out test accurately is arranged, and is also beneficial to reduce the bubble generated during slip casting,
Improve grouting quality;
(3) grouting port is arranged using in taper support side wall in the present invention, and slip casting pipe diameter is not influenced by slit width, can be to milli
Meter level ring shake slip casting, thus short form test equipment.
Detailed description of the invention
Fig. 1 is the sectional view of grouting device of the present invention;
Fig. 2, Fig. 3 are the floor map of grouting device of the present invention.
Specific embodiment
Below with reference to attached drawing, technical solution of the present invention and beneficial effect are described in detail.
As shown in Figure 1 to Figure 3, the present invention provides a kind of grouting device suitable for slip casting armored concrete pull-out test,
Seam slip casting, including cross brace 2, taper support 4, slurry casting machine and rubber ring 6 are stayed for realizing between reinforcing bar 1 and concrete 3,
Wherein, reinforcing bar 1, concrete 3 are test specimen main body, and reinforcing bar 1 is inserted into the through hole center of concrete 3, and in reinforcing bar 1 and concrete 3
There are ring shakes between through hole.
Cross brace 2 is set in 1 top of reinforcing bar, the cross comprising being used to form the vertical bar of soap-free emulsion polymeization section and for fixing vertical bar
Bar, wherein vertical bar is hollow structure, is inserted into for reinforcing bar, to play positioning action, and vertical bar runs through cross bar, vertical bar and reinforcing bar
Coincidence length (namely length of soap-free emulsion polymeization section) be 5 times of bar diameter;By cooperating cross brace 2 and reinforcing bar 1, play
Fixed steel bars 1, setting soap-free emulsion polymeization section and the effect for sealing slip casting channel top, and taken out after the completion of slip casting.
Taper support 4 is installed on 1 lower part of reinforcing bar, plays the role of support positioning, reinforcing bar 1 is fixed on concrete 3 and is penetrated through
Hole center, and taper support 4 and 1 contact position of reinforcing bar are provided with rubber ring 6, the gap between taper support 4 and concrete 3 is then used
Magnesium carbonate cement seal plays the role of closing slip casting environment.
The side wall of the taper support 4 opens up grouting port, is inserted into for the Grouting Pipe 5 of slurry casting machine, realizes slip casting from bottom to top,
And notice that slip casting nozzle is no more than slurries liquid level during slip casting, to reduce the generation of bubble, improve grouting quality.
In the present embodiment, the cube block side length that concrete is presented is 10 times of bar diameter, and soap-free emulsion polymeization segment length is
5 times of bar diameter, reinforcing bar upper surface and concrete cube upper surface distance are not less than 300mm, reinforcing bar lower surface and coagulation
The distance of native cube block lower surface is not less than 50mm.
The present invention also provides a kind of grouting methods suitable for slip casting armored concrete pull-out test, include the following steps:
Step 1, the dust on reinforcing bar 1 and 3 surface of concrete and residue etc. are cleaned out with hair dryer, assembles and seals note
Sizing device specifically includes and seals gap between taper support 4 and reinforcing bar 1 with rubber ring 6, with magnesium carbonate cement seal taper branch
Gap between support 4 and concrete 3;
Step 2, suds are smeared at magnesium carbonate cement seal, air are injected into Grouting Pipe 5 with slurry casting machine, and observe
Whether there is or not gas leak phenomenons, if gas leakage, are filled up with magnesium carbonate cement, until no longer gas leakage;
Step 3, slurries are injected into Grouting Pipe 5 with slurry casting machine, from bottom to top slip casting, Grouting Pipe 5 is no more than injection slurry
Grouting Pipe is slowly extracted when slurries can not continue injection in face, closes grouting port with rubber stopper;After being spaced a few minutes, same
Grouting port is opened in position, and insertion Grouting Pipe repeats slip casting, so that slurries are full of crack;
Step 4, component is inverted, until slurries are in semi-cured state, taper support 4 is taken out, extra slurry is cleared up
Liquid, ring shake are sealed with medical proof fabric, and brushing magnesium carbonate cement seal crack;
Step 5, maintenance to grout curing rear taking-up cross brace 2 and removes surface residue.
The above examples only illustrate the technical idea of the present invention, and this does not limit the scope of protection of the present invention, all
According to the technical idea provided by the invention, any changes made on the basis of the technical scheme each falls within the scope of the present invention
Within.
Claims (7)
1. a kind of grouting device suitable for slip casting armored concrete pull-out test, it is characterised in that: including cross brace, taper
Support and slurry casting machine, wherein cross brace includes cross bar, and through the vertical bar of cross bar, vertical bar is hollow structure, is set in steel
Muscle top, cross bar is located at concrete top, for fixing vertical bar;Taper support is installed on reinforcing bar lower part, and the bottom of taper support
Face is contacted with the bottom surface of concrete;The side wall of the taper support opens up grouting port, is inserted into for the Grouting Pipe of slurry casting machine.
2. being suitable for the grouting device of slip casting armored concrete pull-out test as described in claim 1, it is characterised in that: described
5 times for being overlapped length and being bar diameter of vertical bar and reinforcing bar.
3. being suitable for the grouting device of slip casting armored concrete pull-out test as described in claim 1, it is characterised in that: described
The contact position of taper support and reinforcing bar is provided with rubber ring.
4. being suitable for the grouting device of slip casting armored concrete pull-out test as described in claim 1, it is characterised in that: described
Gap magnesium carbonate cement seal between taper support and concrete.
5. based on the grouting method of the grouting device as described in claim 1 suitable for slip casting armored concrete pull-out test,
It is characterized by comprising following steps:
Step 1, the vertical bar of cross brace is set in reinforcing bar top, taper support is installed on reinforcing bar lower part, and by slurry casting machine
Grouting Pipe insertion taper support side wall grouting port;
Step 2, slurries are injected into Grouting Pipe with slurry casting machine, from bottom to top slip casting, and make Grouting Pipe no more than slip casting liquid level,
When slurries can not continue injection, Grouting Pipe is slowly extracted, closes grouting port with rubber stopper;After certain interval of time, same
Grouting port is opened in position, and insertion Grouting Pipe repeats slip casting, so that slurries are full of crack;
Step 3, by whole inversion, until slurries are in semi-cured state, taper support is taken out, extra slurries, taper are cleared up
The ring shake that support is formed is sealed with medical proof fabric, and brushing magnesium carbonate cement seal crack;
Step 4, maintenance to grout curing rear taking-up cross brace and removes surface residue.
6. grouting method as claimed in claim 5, it is characterised in that: in the step 1, with seal with elastometic washer taper support with
Gap between reinforcing bar, with the gap between magnesium carbonate cement seal taper support and concrete.
7. grouting method as claimed in claim 6, it is characterised in that: in the step 2, before injecting slurries, first in carbon
Suds are smeared at sour magnesium cement seal, air are injected into Grouting Pipe with slurry casting machine, and observe whether there is or not gas leak phenomenon, if leakage
Gas is then filled up with magnesium carbonate cement, until no longer gas leakage.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201910514253.3A CN110344602A (en) | 2019-06-14 | 2019-06-14 | Grouting device and grouting method suitable for slip casting armored concrete pull-out test |
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CN201910514253.3A CN110344602A (en) | 2019-06-14 | 2019-06-14 | Grouting device and grouting method suitable for slip casting armored concrete pull-out test |
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CN110344602A true CN110344602A (en) | 2019-10-18 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111206565A (en) * | 2020-03-06 | 2020-05-29 | 中冶建工集团有限公司 | Local terrace concrete sedimentation treatment method |
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JP2011017208A (en) * | 2009-07-10 | 2011-01-27 | Takenaka Komuten Co Ltd | Method of manufacturing precast concrete member, precast concrete member, and form for guide surface molding |
CN202401766U (en) * | 2011-12-07 | 2012-08-29 | 中国铁道科学研究院铁道建筑研究所 | Novel slurry filling assembly for cracks |
CN103016034A (en) * | 2012-11-03 | 2013-04-03 | 孟钧 | Mining hollow grouting anchor cable |
CN106088364A (en) * | 2016-07-25 | 2016-11-09 | 浙江万达建设集团有限公司 | A kind of Novel underground room antiseep attachment structure and construction method thereof |
CN205839602U (en) * | 2016-06-30 | 2016-12-28 | 北京城建七建设工程有限公司 | A kind of deformed bar pipeline grouting device |
CN210828420U (en) * | 2019-06-14 | 2020-06-23 | 河海大学 | Grouting device suitable for grouting reinforced concrete drawing test |
-
2019
- 2019-06-14 CN CN201910514253.3A patent/CN110344602A/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011017208A (en) * | 2009-07-10 | 2011-01-27 | Takenaka Komuten Co Ltd | Method of manufacturing precast concrete member, precast concrete member, and form for guide surface molding |
CN202401766U (en) * | 2011-12-07 | 2012-08-29 | 中国铁道科学研究院铁道建筑研究所 | Novel slurry filling assembly for cracks |
CN103016034A (en) * | 2012-11-03 | 2013-04-03 | 孟钧 | Mining hollow grouting anchor cable |
CN205839602U (en) * | 2016-06-30 | 2016-12-28 | 北京城建七建设工程有限公司 | A kind of deformed bar pipeline grouting device |
CN106088364A (en) * | 2016-07-25 | 2016-11-09 | 浙江万达建设集团有限公司 | A kind of Novel underground room antiseep attachment structure and construction method thereof |
CN210828420U (en) * | 2019-06-14 | 2020-06-23 | 河海大学 | Grouting device suitable for grouting reinforced concrete drawing test |
Cited By (1)
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CN111206565A (en) * | 2020-03-06 | 2020-05-29 | 中冶建工集团有限公司 | Local terrace concrete sedimentation treatment method |
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