CN104532968A - Method of preventing connecting part between concrete structure and rear filling wall from being cracked - Google Patents
Method of preventing connecting part between concrete structure and rear filling wall from being cracked Download PDFInfo
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- CN104532968A CN104532968A CN201410777892.6A CN201410777892A CN104532968A CN 104532968 A CN104532968 A CN 104532968A CN 201410777892 A CN201410777892 A CN 201410777892A CN 104532968 A CN104532968 A CN 104532968A
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Abstract
The invention discloses a method of preventing a connecting part between a concrete structure and a rear filling wall from being cracked. The method is characterized by comprising the following steps: masonry construction of filling wall, plasterering construction of filling wall and construction of pasting anti-cracked woven belt outside the connecting part, wherein the process of the construction of pasting anti-cracked woven belt outside the connecting part comprises grinding and cleaning up the surface of a substrate, snapping a line on the surface of the substrate to determine the gluing scope of the woven belt, coating primer in the gluing scope, gluing the anti-crack woven belt and pressurizing the woven belt to be fully soaked by a scrapping plate, and coarsening or protecting the surface of the anti-crack woven belt after colloid is dried or solidified. The method provided by the invention has the beneficial effects of ensuring that the filling wall and a primary concrete structure are built and squeezed densely by improving and promoting an existing traditional masonry construction process; meanwhile, furthermore anti-cracking or effectively covering can be realized by adopting an effective external enhanced cloth through the combined action of two defense lines, the overall process is simple and the idealistic anti-cracking effect can be realized.
Description
Technical field
The present invention relates to a kind of method of crackle preventing, be specifically related to a kind of method preventing concrete structure and rear block infilled wall connecting portion crack, belong to technical field of buildings.
Background technology
General framework structure, shear wall structure and frame-shear-wall structure are referred to as reinforced concrete structure.In reinforced concrete structure, some shear walls building hole (as door and window hole) and antidetonation hole, build infilled wall after usual employing carry out local or all build by laying bricks or stones, and some frameworks or frame structure also adopt rear infilled wall of building to separate architectural space, to meet owner's instructions for use usually.
According to after revision " masonry design specification ", the connected mode of rear block infilled wall and concrete structure can be divided into following two kinds:
The first throws off to connect.Leave a fixed gap when namely building a wall and between concrete structure, then adopt the measures such as reinforcing bar, ironware and built-in fitting, elastic filling material or closed material to be linked together by two kinds of base materials.
The second is that non-disengagement connects (conventional method connection).I.e. traditionally masonry panel, and wall tie bar is set on request; Body of wall top is interspaced in advance, until under-filled wall shrink stable after tiltedly build, make both compact siro spinning technology together.
For above two kinds of connected modes, owing to considering the aspect requirements such as construction factor, structural seismic performance, normal usage and comfortableness, general little employing is thrown off and is connected, and current most engineering have employed non-disengagement and connects (namely tradition connects).
Show according to investigation result and a large amount of data, connect masonry infill wall at present by tradition, after 1 year, the engineering of more than 90% is in connecting portion generation crack in various degree.Generally two kinds can be divided into: one is horizontal fracture (being positioned at the bottom of beam or shear wall hole top bit), and another kind is Vertical Cracks (frame column or shear wall sideway stance) for such crack.
Through safety of structure and the comprehensive Analysis and Identification of anti-seismic performance, such connecting portion crack, whole building structure safety and anti-seismic performance can not be affected, but certain influence can be produced to the normal usage in house (as percolating water etc.) and applicability (as attractive in appearance etc.).
For such connecting portion crack, be also that people solve but uncared-for construction difficult problem for a long time not yet very well, be also a Construction Quality common fault always.It will be further appreciated that therefore it can cause unnecessary workmanship dispute or bring unnecessary trouble in the commercial house dealing and use procedure.
Summary of the invention
For solving the deficiencies in the prior art, the object of the present invention is to provide one both simple, economical, effectively can solve again connecting portion in conjunction with bad problem, there is the method preventing concrete structure and rear block infilled wall connecting portion crack of desirable effect of prestressed simultaneously.
In order to realize above-mentioned target, the present invention adopts following technical scheme:
Prevent the method in concrete structure and rear block infilled wall connecting portion crack, it is characterized in that, comprise the following steps:
(1), infilled wall building construction;
(2), infilled wall plastering construction;
(3), connecting portion pastes cracking resistance cloth belt construction outward:
(1), polish: matrix surface is polished and clears up;
(2), snap the line: at matrix surface snap the line to determine the stickup scope of strap;
(3), primer is coated with: brushing primer within the scope of stickup;
(4), paste: paste cracking resistance strap, and suitably pressurize with scraper plate and make strap fully clear and rich;
(5), surfacing: after colloid drying or solidification, roughening or protective treatment are carried out to the surface of cracking resistance strap.
The aforesaid method preventing concrete structure and rear block infilled wall connecting portion crack, is characterized in that, in step (), the process of infilled wall building construction is:
(1) interface processing: before building by laying bricks or stones, carries out brushing process with cement mortar glue to connecting portion concrete interface, the thickness≤3.0mm of cement mortar glue brushing;
(2) plaster in advance: before building by laying bricks or stones, carry out cement mortar in advance to connecting portion Concrete In Structures face and to plaster process, the weight ratio of cement and sand is 1:2, and the thickness of cement mortar is 10mm-15mm;
(3) build by laying bricks or stones: when building by laying bricks or stones the masonry of vertical connecting portion, brick end is first plastered, and suitably real jam-packed is built in pressurization and Concrete In Structures face; When tiltedly building body of wall space, level connection joint position, plaster in skew brick upper end, and make at the bottom of skew brick and beam or hole is pushed up and built real jam-packed.
The aforesaid method preventing concrete structure and rear block infilled wall connecting portion crack, is characterized in that, in step (), composition and the weight proportion of cement mortar glue used during interface processing are:
901 building glues: cement: sand=1:1.5:1.
The aforesaid method preventing concrete structure and rear block infilled wall connecting portion crack, it is characterized in that, in step (two), before infilled wall is plastered, to matrix surface brushing interface treating agent, the brushing scope of foregoing interface inorganic agent is: matrix every side width is no less than the scope of 300mm, and ensures this scope motar intensity >=M5.0.
The aforesaid method preventing concrete structure and rear block infilled wall connecting portion crack, it is characterized in that, in step (three), the primer used is epoxide-resin glue, and corresponding cracking resistance strap is: carbon cloth, glass fabric, basalt cloth or aramid fabric.
The aforesaid method preventing concrete structure and rear block infilled wall connecting portion crack, it is characterized in that, in step (three), the primer used is 901 building glues, corresponding cracking resistance strap is: E type glass fabric or S type high strength glass fiber sheet, the thickness of cracking resistance strap is 0.1mm.
Usefulness of the present invention is:
1, based on simple conventional method (non-disengagement method of attachment), and in conjunction with current architecture configuration reinforcement and strengthening, crack maintenance technique and new material application achievements, by improving current traditional building construction technique, guarantee that infilled wall and original concrete structure build real jam-packed, namely connecting portion is solved from inside in conjunction with bad problem, as the first line of defence of control critical eigenvalue;
2, on the basis of the first line of defence, the further cracking resistance of effective external reinforcing strap is adopted, as second defence line, crack, control connection position;
3, whole technique is both simple, can solve again connecting portion in conjunction with bad problem, have desirable effect of prestressed simultaneously.
Accompanying drawing explanation
Fig. 1 is the main construction techniques flow chart preventing the method in concrete structure and rear block infilled wall connecting portion crack of the present invention;
Fig. 2 is that infilled wall metope joins position (vertically) both sides matrix when flushing with main body structure concrete face and to plaster schematic diagram;
Fig. 3 is that infilled wall metope joins position (level) both sides matrix when flushing with main body structure concrete face and to plaster schematic diagram;
To be that infilled wall metope and main body structure concrete face are uneven to plaster schematic diagram to infilled wall (level) Fig. 4 at ordinary times;
To be that infilled wall metope and main body structure concrete face are uneven to plaster schematic diagram to infilled wall (vertically) Fig. 5 at ordinary times;
Fig. 6 is that Concrete In Structures and infilled wall vertically join position snap the line, paste schematic diagram.
The implication of Reference numeral in figure: 1-infilled wall, 2-Concrete In Structures, 3-motar, 4-vertically joins position, 5-level handing-over position, 6-connecting portion, and the left control line of 7-, the right control line of 8-, 9-strap pastes scope.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, concrete introduction is done to the present invention.
With reference to Fig. 1, the method in concrete structure and rear block infilled wall connecting portion crack that prevents of the present invention mainly comprises three large steps: infilled wall building construction, infilled wall plastering construction, connecting portion paste cracking resistance cloth belt construction outward.Introduce each step in detail respectively below.
One, infilled wall building construction
1, interface processing
Before building by laying bricks or stones, with cement mortar glue, brushing process is carried out to connecting portion concrete interface, the thickness≤3.0mm of cement mortar glue brushing.
The composition of cement mortar glue and weight proportion are:
901 building glues: cement: sand=1:1.5:1.
Empirical tests, the cement mortar glue of this composition has higher adhesion strength.
2, plaster in advance
Before building by laying bricks or stones, carry out cement mortar in advance to connecting portion Concrete In Structures face and to plaster process, the weight ratio of cement and sand is 1:2, and the thickness of cement mortar is 10mm-15mm.
3, build by laying bricks or stones
When building by laying bricks or stones the masonry of vertical connecting portion, brick end is first plastered, and suitably real jam-packed is built in pressurization and Concrete In Structures face.
When tiltedly building body of wall space, level connection joint position, the infilled walls such as palpus puzzle more than 14d.Skew brick should adopt solid brick, and when tiltedly building, plaster in skew brick upper end, and makes at the bottom of skew brick and beam or hole is pushed up and built real jam-packed.As skew brick is once failed compacted, benefit ash can be carried out from both sides secondary to gap, skew brick upper end, until position, space is filled closely knit.
Two, infilled wall plastering construction
1, pretreatment
Before plastering to infilled wall, to matrix surface brushing interface treating agent, the brushing scope of interface treating agent is: matrix every side width is no less than the scope of 300mm, and ensures this scope motar intensity >=M5.0.
According to interrelated data, motar is just drawing adhesion strength generally lower than 0.3MPa, and must not must not occur hollowing phenomenon.In addition, tackle this scope after plastering and carry out necessary maintenance.
2, plaster
Whether flush with Concrete In Structures face according to infilled wall, connecting portion can be divided into two kinds of situations: one is that infilled wall hair side flushes with Concrete In Structures face; Another kind is infilled wall hair side is do not flush with Concrete In Structures face (the little 20-30mm of the former Thickness Ratio the latter).Paste cracking resistance strap outward for connecting portion can be realized, must ensure that connecting portion both sides matrix surface flushes.
Based on this, when infilled wall build by laying bricks or stones hair side be flush with Concrete In Structures face time, two kinds of matrixes must carry out process of plastering by shown in Fig. 2, Fig. 3; It is at ordinary times uneven with Concrete In Structures face for building hair side by laying bricks or stones when infilled wall, only need plaster by Fig. 4, Fig. 5 to infilled wall hair side, make it to flush with Concrete In Structures side.
Three, connecting portion pastes cracking resistance cloth belt construction outward
1, polish
Before polishing, connecting portion surface should be dry, and concrete and other matrix surface polishing width are no less than 200mm and 300mm respectively.
General employing electric tools or manual emery wheel are polished, and guarantee that matrix surface is smooth.
If handing-over position matrix surface exists the open defect such as groove, gap, should the materials such as epoxy mortar be adopted in advance to repair, and re-start after material cured to be repaired and polish flat.Afterwards the floating ash of matrix surface is cleaned out.
2, snap the line
According to interrelated data, for the connecting portion of different infilled wall block material, for guaranteeing the effective drawknot of cracking resistance strap, connecting portion every side strap lap width should by table 1 value.
The connecting portion strap lap width of the different Filled-wall material of table 1
If connecting portion matrix has all smeared ash, post side, side, shear wall hole, Dong Ding and beam feather edge line should be ejected, as the mark line of connecting portion according to building structure construction figure.
The connecting portion strap lap width provided according to table 1 and mark line, adopt ink fountain to carry out snap the line, to determine the stickup scope of strap.Connecting portion both sides snap the line can be used as the control line pasting strap, and concrete snap the line is shown in schematic diagram Fig. 6.
3, primer is coated with
Brushing primer within the scope of stickup.
Based on economic input or requirement service life, propose two kinds of primers in the solution of the present invention: 901 building glues and epoxide-resin glue.
901 building glue combination properties are good, price is lower, are a kind of primers of economic environmental protection.901 building adhesives are adopted to paste the cracking resistance straps such as E type glass fabric, S type high strength glass fiber sheet more simpler than employing epoxide-resin glue, easy, and influenced by ambient temperature less.To having no special requirements service life or 901 building glues can being selected as primer when fund aspect drops into less.
After E type glass fabric or S type high strength glass fiber sheet are pasted and terminated, as to treatment sites brushing one deck cement paste glue, not only can increase the later stage whitewashes Bonding quality of the interface between grain and liner, also effectively can protect and extend its service life.
E type glass fabric, the equal preferred thickness of S type high strength glass fiber sheet are thinner, and such as thickness is 0.1mm.
The cloth materials such as epoxide-resin glue and glass fabric, carbon cloth, basalt cloth, aramid fabric have good bonding mechanical property.Be applicable to having requirement (30 years) or special important events service life.
For epoxide-resin glue, carbon cloth matching gel common in the market can be adopted, first component (glue), second component (curing compound) prepare by by specification in proportion, and adopt pony mixer mix even, each spice is unsuitable too much (maximum 10Kg), should adopt mix while mode, in case colloid solidification.During gluing, its thickness does not trickle with glue and is advisable, and gluing scope can exceed more than control line 10mm.
4, paste
After primer is painted with, the cracking resistance strap cut out in advance (every leaf length is no more than 400mm no more than 1.0m, width) is pasted onto on matrix surface, and repeatedly scrapes, make the abundant clear and rich cracking resistance strap of colloid
In taping process, strap must not stay gap, should take completely to glue mode.
The basic principle that strap is selected:
Generally speaking, for structural strengthening reinforcement, require that the tensile strength of strap, modulus of elasticity are relative with toughness (elongation rate) and want high, but for the cracking resistance at infilled wall and concrete anatomical connectivity position, due to the tensile stress that this position produces, do not belong to structure stress, belong to caused by shrinkage strain, therefore the tensile stress very little (much smaller than structure stress) that this position is born.Based on this, resist the strap needed for outside tensile stress for connecting portion, its tensile strength and toughness need not excessive demands, namely have certain toughness and intensity to retrain the crack of connecting portion, thus can realize the seamless perfect effect of outward appearance completely.
Through investigation, adopt kraft, non-woven fabrics, really cloth and gauze wire cloth be used for connecting portion, its effect of prestressed is not very good, and acrylic fibers cloth and dacron cloth physical parameter substantially close, therefore be also unsuitable for connecting portion cracking resistance.
According to engineering Pilot Analysis result in the past, no matter whether connecting portion bonding surface quality is good, carbon cloth and epoxide-resin glue is adopted to carry out repairing treatment to connecting portion crack, after 10 years all there is not cracking phenomena in this position (carbon cloth and outside finish coat (putty layer, dope layer etc.) thereof), serves from good control critical eigenvalue effect.
Glass fabric, basalt cloth and aramid fabric, their parameter such as tensile strength, modulus of elasticity is all very close with carbon cloth, elongation rate is (the air shrinkage value 1.2-3.0% close to mortar) between 1.8-2.8%, their toughness is much smaller relative to terylene, and namely they have the performance same with carbon cloth.
Gauze wire cloth, dacron cloth (terylene) and acrylic fiber cloth, though their tensile strength meets demand of anti-crack, but their elongation rate relatively large (between 18-25%), the screen cloth too large according to this kind of toughness of finding is unsuitable for the cracking resistance strap of connecting portion.
Analyze and comparing result based on above, during using epoxide-resin glue as primer, preferred carbon cloth, glass fabric, basalt cloth and aramid fabric are as the cracking resistance strap of connecting portion.Glass fabric is more suitable for being used as the outside cracking resistance strap of connecting portion with its higher cost performance.
During using 901 building glues as primer, preferred E type glass fabric or S type high strength glass fiber sheet are as the cracking resistance strap of connecting portion.
It is different that alkali metal oxide content pressed by glass fabric, can be divided into alkali-free cloth (i.e. E type glass fabric), low alkali or neutral-alkaline cloth (i.e. C type glass fabric) and high-alkali cloth (i.e. A type glass fabric), its performance difference is very large.In reinforcement and strengthening maintenance, preferably adopt alkali-free glass fiber cloth, i.e. E type glass fabric, its alkali content <1%, there is higher mechanical strength and good electrical insulating property, water resistance, resistance to ag(e)ing.
S type high strength glass fiber sheet is the further lifting of E type glass fabric performance, and its alternative carbon cloth is applied in structural strengthening reinforcement and maintenance.
5, face glue is coated with
If primer does not fully infiltrate strap, so can be coated with last layer face glue (face glue and primer belong to same bonding adhesive) on the surface of cracking resistance strap and remedy, thus guarantee that strap is fully infiltrated by colloid, when being coated with face glue, should ensure that strap is smooth.
6, surfacing
After treating the dry or solidification of colloid (general normal temperature 24h, period can not disturbance), roughening or protective treatment are carried out to the surface of glass fabric.Generally protective treatment can adopt cement mortar glue (i.e. weight proportion: 901 building glues: cement: medium sand=1:1.5:1) to carry out brushing process.Surfacing area can be greater than more than stickup scope 30mm.
So far, construction terminates.
Between connecting portion two kinds of base materials in conjunction with bad be the internal factor causing this crack, position, practice of construction is difficult to accomplish to combine good, namely inner bonding surface place because of construction factor crack just inevitable.Through safety of structure and the comprehensive Analysis and Identification of anti-seismic performance, such connecting portion crack can not affect building structure safety and anti-seismic performance, but can to the normal usage in house (as percolating water etc.), especially applicability (as attractive in appearance etc.) can produce certain influence.
Since crack is inevitable, but do not affect structural safety, therefore namely the starting point of method of the present invention carries out from outside retraining (need not make great efforts from inside), adopt covering method to realize from the seamless perfect effect of outward appearance.
Glass fabric, basalt cloth, aramid fabric and carbon cloth etc., they are different from kraft, non-woven fabrics, really cloth, acrylic fibers cloth and gauze wire cloth, they with its higher intensity and modulus of elasticity, less toughness can from outside operative constraint connecting portion crack.Because the parameters such as their tensile strength of the materials such as glass fabric, modulus of elasticity are all very close, elongation rate is between 1.8-2.8%, and close to the air shrinkage value 1.2-3.0% of mortar, namely the change of various factors all can not cause strap to ftracture, also strap and tack coat can not be caused to be out of shape inconsistent, thus avoid the outside cracking such as putty layer, dope layer of strap, there is fabulous cracking-proof effect.
The applicable cases of prevention and controls in Practical Project that the present invention proposes:
1, in new construction pilot situation
In year January in December, 2010 to 2011, carry out pilot on bumper harvest road 24, Xi'an floor commercial and residential building (shearing structure) and food industry garden 19, Sanyuan County floor residential building (shearing structure) respectively.
This two engineerings shear wall hole Filled-wall material is respectively Aerated Concrete and Autoclaved limesand brick building block above, and top, hole is tiltedly built and adopted common brick, and infilled wall adopts conventional method to build by laying bricks or stones, and plaster afterwards, after plastering, infilled wall flushes with shear wall concrete surface.
This process have employed glass fabric and epoxide-resin glue has carried out full sticky or compartment stickup to handing-over position.
These two engineering pilots have employed three kinds of cloth (glass fabric, basalt cloth and carbon cloth) and epoxide-resin glue, paste the connecting portion of 16 metopes altogether.
Adopt epoxy mortar to repair to handing-over position groove before pasting, and polish, by this method, connecting portion is pasted afterwards.
Through follow-up investigations over nearly 3 years, after connecting portion is completely sticky, finish coat (putty and dope layer) does not find crack, and connecting portion compartment is pasted rear finish coat and found compartment crack.
2, the applicable cases in existing building crack repairing
In July, 2010, method of the present invention is adopted to carry out repairing treatment to the crack of the connecting portion of four the six story frame structure residential buildings in safe and comfortable Pingli County.
This project is built before and after 2008, and rear block Filled-wall material is small concrete hollow block, and skew brick at the bottom of beam is cement solid brick or common brick, adopts conventional method brick-building art, at the plug-in gauze wire cloth of connecting portion during interior powder.
Come into operation less than 2 years at ornament, find framework and brickwork connecting portion crack.After adopt the material such as gauze wire cloth, really cloth to carry out repairing treatment through property, still produce cracking less than 1 year former connecting portion.
Based on this, through consulting with developer, inventor adopts 200g carbon cloth and epoxide-resin glue to carry out repairing (altogether carbon cloth bond area about 40 square metres) to wherein 5 connecting portion cracks, family.
Follow-up investigations since 3 years, do not find that connecting portion finish coat (metope criticizes putty swabbing) produces cracking phenomena again.
As can be seen here, method of the present invention is not only simple, economical, effectively can solve again connecting portion in conjunction with bad problem, there is desirable effect of prestressed simultaneously, not only be suitable for use in during the control of building engineering concrete structure and rear block infilled wall connecting portion crack constructs, and the maintenance process in existing building concrete structure and rear block infilled wall connecting portion crack is also suitable for, there is fabulous application value.
It should be noted that, above-described embodiment does not limit the present invention in any form, the technical scheme that the mode that all employings are equal to replacement or equivalent transformation obtains, and all drops in protection scope of the present invention.
Claims (9)
1. prevent the method in concrete structure and rear block infilled wall connecting portion crack, it is characterized in that, comprise the following steps:
(1), infilled wall building construction;
(2), infilled wall plastering construction;
(3), connecting portion pastes cracking resistance cloth belt construction outward:
(1), polish: matrix surface is polished and clears up;
(2), snap the line: at matrix surface snap the line to determine the stickup scope of strap;
(3), primer is coated with: brushing primer within the scope of stickup;
(4), paste: paste cracking resistance strap, and suitably pressurize with scraper plate and make strap fully clear and rich;
(5), surfacing: after colloid drying or solidification, roughening or protective treatment are carried out to the surface of cracking resistance strap.
2. the method preventing concrete structure and rear block infilled wall connecting portion crack according to claim 1, is characterized in that, in step (), the process of infilled wall building construction is:
(1) interface processing: before building by laying bricks or stones, carries out brushing process with cement mortar glue to connecting portion concrete interface, the thickness≤3.0mm of cement mortar glue brushing;
(2) plaster in advance: before building by laying bricks or stones, carry out cement mortar in advance to connecting portion Concrete In Structures face and to plaster process, the weight ratio of cement and sand is 1:2, and the thickness of cement mortar is 10mm-15mm;
(3) build by laying bricks or stones: when building by laying bricks or stones the masonry of vertical connecting portion, brick end is first plastered, and suitably real jam-packed is built in pressurization and Concrete In Structures face; When tiltedly building body of wall space, level connection joint position, plaster in skew brick upper end, and make at the bottom of skew brick and beam or hole is pushed up and built real jam-packed.
3. the method preventing concrete structure and rear block infilled wall connecting portion crack according to claim 2, is characterized in that, in step (), composition and the weight proportion of cement mortar glue used during interface processing are:
901 building glues: cement: sand=1:1.5:1.
4. the method preventing concrete structure and rear block infilled wall connecting portion crack according to claim 1, it is characterized in that, in step (two), before infilled wall is plastered, to matrix surface brushing interface treating agent, the brushing scope of described interface treating agent is: matrix every side width is no less than the scope of 300mm, and ensures this scope motar intensity >=M5.0.
5. the method preventing concrete structure and rear block infilled wall connecting portion crack according to claim 1, is characterized in that, in step (three), the primer used is epoxide-resin glue.
6. the method preventing concrete structure and rear block infilled wall connecting portion crack according to claim 5, is characterized in that, in step (three), the cracking resistance strap used is: carbon cloth, glass fabric, basalt cloth or aramid fabric.
7. the method preventing concrete structure and rear block infilled wall connecting portion crack according to claim 1, is characterized in that, in step (three), the primer used is 901 building glues.
8. the method preventing concrete structure and rear block infilled wall connecting portion crack according to claim 7, is characterized in that, in step (three), the cracking resistance strap used is: E type glass fabric or S type high strength glass fiber sheet.
9. the method preventing concrete structure and rear block infilled wall connecting portion crack according to claim 8, is characterized in that, in step (three), the thickness of the cracking resistance strap used is 0.1mm.
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| CN201410777892.6A CN104532968B (en) | 2014-12-15 | 2014-12-15 | Prevent concrete structure from building the method for filling wall connecting portion crack with rear |
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| CN105297950A (en) * | 2015-09-20 | 2016-02-03 | 宁夏宏远建设工程有限公司 | Infilled wall and horizontal load-bearing structure gap wall surface crack-controlling construction method |
| CN111155664A (en) * | 2020-03-16 | 2020-05-15 | 中建二局第二建筑工程有限公司 | Crack control construction method for aerated concrete block filler wall |
| CN114197340A (en) * | 2021-12-18 | 2022-03-18 | 四川恒高新型建材有限公司 | Concrete surface repairing and protecting process |
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| CN102477797A (en) * | 2010-11-24 | 2012-05-30 | 五冶集团上海有限公司 | Construction method for preventing crack of infilled wall |
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| JP2012082632A (en) * | 2010-10-13 | 2012-04-26 | Chugoku Electric Power Co Inc:The | Water stop |
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Cited By (4)
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| CN105297950A (en) * | 2015-09-20 | 2016-02-03 | 宁夏宏远建设工程有限公司 | Infilled wall and horizontal load-bearing structure gap wall surface crack-controlling construction method |
| CN111155664A (en) * | 2020-03-16 | 2020-05-15 | 中建二局第二建筑工程有限公司 | Crack control construction method for aerated concrete block filler wall |
| CN111155664B (en) * | 2020-03-16 | 2021-06-08 | 中建二局第二建筑工程有限公司 | Crack control construction method for aerated concrete block filler wall |
| CN114197340A (en) * | 2021-12-18 | 2022-03-18 | 四川恒高新型建材有限公司 | Concrete surface repairing and protecting process |
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|---|---|
| CN104532968B (en) | 2017-12-12 |
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