CN104179263A - Building exterior wall external thermal insulation system waterproof and drainage construction method - Google Patents

Building exterior wall external thermal insulation system waterproof and drainage construction method Download PDF

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Publication number
CN104179263A
CN104179263A CN201410435942.2A CN201410435942A CN104179263A CN 104179263 A CN104179263 A CN 104179263A CN 201410435942 A CN201410435942 A CN 201410435942A CN 104179263 A CN104179263 A CN 104179263A
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China
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mortar
construction
thermal insulation
layer
water
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CN201410435942.2A
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Chinese (zh)
Inventor
王法精
张雪伟
张甡
郑建国
马庆元
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中启胶建集团有限公司
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Priority to CN201410435942.2A priority Critical patent/CN104179263A/en
Publication of CN104179263A publication Critical patent/CN104179263A/en

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Abstract

The invention discloses a building exterior wall external thermal insulation system waterproof and drainage construction method. The building exterior wall external thermal insulation system waterproof and drainage construction method includes following steps: processing a wall foundation layer; leveling the wall foundation layer; arranging a drainage channel; pasting a thermal insulation board; smearing a polymer anti-crack mortar protection layer; processing details of waterproof nodes; performing external wall surface decoration and a water pouring experiment. The building exterior wall external thermal insulation system waterproof and drainage construction method overcomes the problems that an external wall crazes, leaks and the like, caused by water pressure generated due to water which enters a thermal insulation layer of a building exterior wall external thermal insulation system and can not be discharged in time. The building exterior wall external thermal insulation system waterproof and drainage construction method is applied into a plurality of projects, and thereby effectively improves cracking resistance and seepage prevention performance of the building exterior wall external thermal insulation system, prevents cracks and leakage of the external wall, eliminates potential safety hazards caused by the accident that the thermal insulation board falls off a high position, reduces user complaint and claim rate, reduces maintenance cost, reduces engineering use cost, and obtains good economic benefits and social benefits.

Description

The anti-drainage and construction method of a kind of External Thermal Insulation System
Technical field
The present invention relates to the anti-drainage and construction method of a kind of External Thermal Insulation System, belong to technical field of building construction.
Background technology
Exterior wall external insulation technology of buildings is a kind of power-saving technology that current energy-saving efficiency is the highest, be most widely used.But for many years,, the phenomenon such as ubiquity outer wall cracking, seepage in this system applies, becomes a kind of obstinate, the common quality defect of outbreak repeatedly.After insulation layer water inlet, reduce energy-saving effect, also can not discharge in time because of moisture, in insulation layer, a large amount of ponding forms larger lateral pressure, increase the probability of moisture to indoor infiltration, warming plate has increased because lateral pressure is excessive the danger coming off, even there is the security incident of falling from high altitude in some engineering, the people's lives and property safety in serious harm.
Summary of the invention
Cause outer wall cracking, seepage for not discharging in time formation water pressure because of insulation layer water inlet in External Thermal Insulation System, the problem such as finally cause that insulation layer comes off, technical problem to be solved by this invention is to provide the anti-drainage and construction method of a kind of External Thermal Insulation System.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
The invention provides the anti-drainage and construction method of a kind of External Thermal Insulation System; the method from base treatment to final insulation, facing and the processing of thin portion formed the anti-drainage system of a whole set of system, comprises the following steps: the levelling of body of wall base treatment → basic unit, drainage channel → sticking heat-preservation plate is set → smear the thin portion of polymers anti-cracking mortar topping → waterproofing node processing → exterior wall finish → water pouring test.
Above-mentioned construction method specifically comprises the following steps:
(1) body of wall base treatment
1) split bolt hole shutoff
Inner side, body of wall split bolt hole 2/3 degree of depth adopts asphalt mortar, bituminous mortar shutoff, and outside 1/3 degree of depth adopts polyurethane foam shutoff, and metope radius 250mm scope centered by bolt hole is brushed polyurethane water-proof paint 3 times, and thickness is not less than 1.5mm;
2) base treatment
Body of wall drum mould place adopts chip-axe to cut microgroove, and masonry mortar joint insatiable hunger everywhere embedding is in advance real, and cleaning wall mortar, greasy dirt, dust and foreign material make metope cleaning, dry;
(2) basic unit's levelling, drainage channel is set
1) basic unit's levelling
Basic unit adopts cement mortar screeding, mixes water proofing property Admixture in mortar, and it is real that leveling layer is smeared densification, pull-out fine, soft fur; Constuction joint stays slope stubble, brushes interfacial agents while connecing batch, bonding closely, surfacing;
2) drainage channel is set
Utilize the dividing joint of leveling layer to do drainage channel.
First snap the line lattice in basic unit, vertical horizontal spacing is advisable to be not more than 3m.
Nail lattice-bounding bar, lattice-bounding bar adopts 20 × 20 battens, should be smooth vertical and horizontal, joint is tight, is close to metope, and surface is smooth-going consistent.Lattice-bounding bar can be used as the use of the floating screed that leveling layer plasters.
3) drainage channel waterproofing work
1. drainage channel (dividing joint) surface is floating with polymer cement putty, the about 2mm of thickness.Gap in dividing joint, hole are smeared to densification reality, surfacing, smooth.
2. along in the each 250mm width range in dividing joint both sides, with polyurethane water-proof paint brushing 3 times, thickness is not less than 1.5mm.
4) discharge opening is set
, laterally every 20m, on warming plate, stay and establish outfall, and tapping pipe is installed every 20m along height, discharge in time the ponding in warming plate.Tapping pipe adopts Φ 25PVC pipe, stretches out warming plate surface layer 5cm.
(3) sticking heat-preservation plate
1) modulus of elasticity of warming plate affects the crack resistance of heat insulation system, and modulus of elasticity is larger, just larger to the constraint of finishing mucilage, and the restraint stress producing in finishing mucilage is just large, and system just more easily ftractures.Conventional warming plate has EPS, XPS plate, rock cotton board etc. at present, and because XPS is more much bigger than the modulus of elasticity of EPS plate, rock cotton board, XPS thin plastering exterior wall external insulation system more easily cracks.So in the time selecting heat insulating material, ensureing, under the prerequisite of thermal property and system safety, should preferentially to select the less sheet materials of modulus of elasticity such as EPS plate, rock cotton board.
2), when warming plate is pasted, should on strong wind atmosphere, the body of wall of temperature higher than the direct sunlight of 30 DEG C, not construct.
3), before warming plate is pasted, process on reply warming plate surface.For XPS plate, should be in warming plate two sides brushing interfacial agents, can use after tack-free.
4), when sticking heat-preservation plate, adhesive mortar is smeared at reply basic unit and the warming plate back side simultaneously.Applying mortar should be avoided the position of drainage channel, prevents from stopping up drainage channel.
5) chemical anchor bolts, alkali resistant glass fibre open weave cloth are constructed by design structure requirement.Chemical anchor bolts should anchor into and in agent structure, be not less than 50mm.
(4) smear polymers anti-cracking mortar topping
1) water proof type mortar preparation
The proportioning of determining plastering mortar is: cement (42.5) 30%; Coarse whiting 5%; 40-70 order sand 15.5%; 80-120 order sand 46.3%; HPMC (4000mPa.S) 0.2%; Wood fibre (length 300 μ m) 0.3%; Acrylic latex powder (7042W) 2.5%; PP fiber (5mm is short to be cut) 0.1%; Organosilicon moisture repellent (0202S) 0.1%.Above proportioning is the percentage that various material weight account for mortar gross weight.According to experimental result, water proofing property and the impermeability of the mortar cover of above proportioning all meet the demands, and have good shock resistance, heat aging property.
According to match ratio, in advance cement, sand, Admixture are mixed according to weight ratio, can entrust premixing mortar manufacturer to prepare according to match ratio, adopt special equipment dry mixing even, pack.
When use, packed dry-mixed mortar is put into agitator, powder water ratio is 1: 0.25 left and right, first adds water and adds afterwards powder, is stirred well to without bulk (3-5min), after static 5 minutes, one stirs again.Mortar will, with mixing with use, be finished before mortar initial set.
2) smear first pass water proof type mortar
After warming plate has been constructed, before back-up coat construction, must use the material identical with plastering mortar, at one very thin waterproofing mortar of warming plate surface construction, thickness 2-3mm.
One face wall water proof type mortar disposable having smeared of will trying one's best, does not stay constuction joint, front and back plaster to ensure interval time to plaster above before and after not initial set continuous plaster continue in time on.
As need stay while establishing constuction joint, should determine in advance constuction joint position, and retained ladder slope Hang Cha, negative and positive angle place is left in constuction joint position must not be less than 200mm.When constuction joint place continues construction, should remove loosening mortar, dirt, water cleans up, and dry rear brush interface treating agent, then continues to plaster.
First waterproofing mortar is answered surfacing, and pulls out fine, soft fur.
3) anchoring piece is installed
After the sclerosis of first water proof type mortar cover, anchoring piece is installed.The mode that should start to adopt from the first floor sticky anchor combination, is no less than 6/m 2, have particular/special requirement to determine according to body of wall leveling layer bearing capacity and actual wind load.Determining of anchoring piece length: thickness+first plastering mortar thickness of the thickness+warming plate of anchorage depth+leveling layer+bonding adhesive, anchoring piece disk diameter is not less than 60mm, and securing member must have bridge cut-off design.Anchoring piece disk can not be given prominence to warming plate, and requires crab-bolt to pass alkali-resistant glass fiber mesh.In facade marginal portion, need to increase an anchoring piece.
Anchorage depth is no less than 50mm for entering deck.
4) back-up coat anti-cracking net and the construction of second plastering mortar
Large area Crack Resistance adopts alkali resistant glass fibre open weave cloth, and four jiaos of door and window hole adopt oblique glass fiber net to strengthen.
1. the oblique reinforcement glass fiber net of door and window hole
Four jiaos at window opening and door opening must adopt oblique reinforcement glass screen cloth.Before carrying out large face reinforcement, oblique reinforcement screen cloth should be imbedded in finishing mucilage and fixed.Glass fiber net cloth edge must be set directly at four jiaos, is 45 °.Size is 20cm × 40cm at least.In addition, door and window hole inner corner trim strengthens the long 40cm of net, and width is consistent with door and window hole width.
2. large area back-up coat glass fiber net and the construction of second plastering mortar
Back-up coat should completely spread, and system complete is covered.Building first floor metope and the position that is subject to mechanical shock should adopt double-deck glass screen cloth to strengthen.After fixing warming plate and first topping rubber cement parch, can carry out the construction of back-up coat finishing mucilage, thickness is 2~3mm.Then by glass screen cloth imbedding in wet finishing mucilage tightly.Glass screen cloth should not have fold from top to bottom, at least should overlapping 10cm between glass screen cloth, and the position of grid cloth should be at the middle part of enhancement Layer or 1/3 place, outside, and must capped at least 1mm (at least 0.5mm of overlapping).For guaranteeing to cover suitably, alkali-resisting glass fiber screen cloth must be imbedded finishing mucilage under dampness.
(5) the thin portion of waterproofing node processes
It is the key that is related to the success or failure of outer heat preservation system waterproof that the thin portion of waterproofing node processes, and this engineering method has mainly been studied door and window hole, waterproofing course is received the thin portion waterproofing work at the positions such as head, shrinkage joint, settlement joint.
1) the thin portion of door and window hole waterproof processes
Adopt " rear plug mouthful " way:
First complete the large-area decorative layer of facade, window covering Zhi Zuo basic unit bottom ash, after doorframe and window frame installation, secondary carries out the pargeting of window covering, finally carries out door and window polyurathamc and sealing around.Between upper, left and right three and the finish coat of doorframe and window frame, stay 5-8mm gap, be convenient to erection of doors and windows on the one hand, can play regulating effect to expanding with heat and contract with cold of door and window simultaneously.In seam, adopt polyurethane foam shutoff, fluid sealant or sealant sealing for inside and outside both sides.10-20mm under frame can be compressed in gap between the bottom of doorframe and window frame and ground or windowsill in the time smearing anticracking grout basic unit, seam is filled out extremely, also can adopt seam between waterproofing mortar finish coat and doorframe and window frame to smear and hook into small circular or flush joint, form dash platform, outside adopts the glue of resistance to marquis sealing.
2) waterproofing course is received the processing of the thin portion of head.
Balcony, roof, parapet, the position such as enclosed balcony, canopy, air-conditioner host plate not, everyly need insulation to process the position of doing again waterproofing course, and the thin portion that all exists waterproofing course to receive head processes problem.At any position, waterproofing materials all must seal the end of heat insulating material, makes under its protection in waterproofing course.Waterproof roll or film paving be extended in main body wall, be the fastness that ensures that waterproof roll is pasted, must be to the stickfast of web edge cushioning.Object be intercept rainwater along wall under, flow into insulation layer and enter the passage of waterproofing course.
1. the thin portion in staggered floor balcony processes.
Before balcony construction of waterproof layer, by the heat-insulation plate for external of periphery upper strata body of wall apart from 400mm left and right on balcony roofing highly, sawed-off about 100mm is wide, in groove, wipe leveling layer, waterproof roll is labelled to upper strata exterior wall main body, nail envelope process after with polyurethane sealing edge, then repair insulation layer with glue powder polyphenyl particle, then the surface layer of constructing.
2. parapet place structure is processed
The parapet of roofing lower inner side inner corner trim that bears down on one, be the thin portion of receipts head of roof waterproof layer, although the Bars In Poured Concrete Slab inferior horn that bears down on one has been done draining " olecranon ", waterproof has been done sealing and has been processed, but the warming plate of parapet is in open state, still can intake by wind and rainwater pressure part.Parapet warming plate should be depressed into top board bottom surface 100mm distance, wipe leveling layer, waterproof roll is labelled on parapet, then mend with glue powder polyphenyl particle mortar.
3. the thin portion of overhanging component processes.
Enclosed balcony, air-conditioner host plate, sunbreaker etc. do not belong to the outer member of choosing, and many designs have only been considered insulation but do not processed water proof structure problem.Only depending on pea gravel concreten, cement mortar on insulation layer is impossible waterproof.Once rainwater enters insulation layer below, will cause the insulation layer water inlet problem of exterior wall.If waterproofing course is not done in cost saving, at least should do preventing local water treatment at the junction of exterior wall and this class formation inferior horn, obstruct plane rainwater enters the intake tunnel of insulating layer of external wall.
3) shrinkage joint, settlement joint processing
Exterior wall shrinkage joint, settlement joint are the straight joints that connects inside and outside both sides, and waterproofing work imperfection easily forms the passage of water leakage of external wall, must adopt multi-way prevention, composite water-proof.
(6) exterior wall finish
1) exterior wall coating material facing
Exterior wall coating material veneering water-proofing structure mainly comprises flexible putty and elastic coating.
1. flexible putty
Must control and be not more than 8% the moisture content of wall base body.
Putty should use flexible putty, and the permission deformation values of putty should be 10-15%.Must use the putty matching with coating, guarantee is combined tightly with basic unit and dope layer, and delamination does not occur.
When painting is scraped, first hang thin layer, fully fill fine cracks and the hole of basic unit.Then be coated with and scrape large area putty.Putty should be coated with and scrape continuously, does not obviously connect stubble, and thinnest part thickness is not less than 1mm.
2. coating ornamental surface
Finish coat coating should be selected elastic coating, and its performance should meet the relevant requirements of GB/T9756-2001 " resin latex dope " and GB/T9755-2001 " exterior wall coating material of synthetic resin emulsion ".Because elastic outer wall paint paint film has very high elasticity, thereby in the time that crack appears in body of wall, film is subject to stretcher strain and can cracking destruction, and still complete film keeps original various iris actions, prevents the body of wall infiltration of extraneous moisture from cracking.
Also can select water proof exterior wall coating, as polyurethane water-proof paint of colored composite water-proof paint, silicon rubber waterproof coating, acrylate waterproof paint, weatherability etc.Water-repellent paint should meet the related content of national standard, and requirement construction is easy, good endurance, can repair easily and replace, change other surface materials of brush etc., can optionally obtain various quality or color, be left intact and just can be used as surface decoration material, can form with fully cohere continuous waterproof of basic unit but the film of good air permeability.
2) facing tile facing.
Face brick should be selected ceramic glaze or all-body tile, should select high-quality benefit clay bonding.Construction should be taked two-sided hanging, the wet technique to wet combining.Two-sided hanging means that the reeded back side of face brick band smears slurry as bonding use, at basic unit's gauze wire cloth or the thin one deck slurry smeared of fiberglass gridding cloth, as setting course; Be face brick to be sticked under moisture state in basic unit's hanging and wet to wet combining, it is excessive that hanging area is difficult for, otherwise after air-dry, do not have the action effect of setting course, and mortar plumpness must reach the more than 90% of code requirement.Construction practices shows, two-sided hanging, the wet face brick that wet combining is bondd are than the face brick of directly pasting on dry basal plane, and its anti-pulling ability can increase by 1/3.The more important thing is, in basic unit, thin floated coat also can be repaired basic unit's local defect, and this antagonism water logging ability of oozing plays beneficial effect.
Face brick jointing should select it to have the jointing adhesive of flexible hydrophobicity.Face brick is generally taked " sleeping, recessed joint ", and the degree of depth is lower than brick face 2-3mm, because this seam can increase the compactness of jointing adhesive, is extremely important to anti-face brick surface rain penetration.Meanwhile, forbid to wipe seam, must use special tool jointing, compacting to even up, guarantee that mortar joint does not seep water.
(7) water pouring test
The waterproof effect of external wall heat insulation system is checked and accepted available continuous trickle method.Open the aperture of Φ 2mm100 with the water pipe of Φ 20-25mm, choose exterior wall area continuous trickle 6h of highest point (its effect is equivalent to continuous 24h heavy rain) outside building of 30%.Observe face, window surrounding within the walls, do not occur seepage, for substantially qualified, within second day, observe, external protection does not come off, plays drum or crackle, for qualified.
Even can measure the leakage point that storm (or typhoon rain) also cannot measure if increase the trickle time to 12h (being equivalent to the torrential rain of continuous 2-3d).
The invention has the beneficial effects as follows:
Construction method of the present invention has overcome in External Thermal Insulation System because of insulation layer water inlet can not discharge in time and form water pressure and cause the problem such as outer wall cracking, seepage, this construction method adopts the principle of anti-row's combination, by drainage channel, material, proportioning and the construction technology of improving surface layer mortar, the thin portion treatment measures at improvement waterproofing node position are set in leveling layer, and take " successively gradual change, flexible break resistant, taking resist as auxiliary, to put as main " method improve the anti-crack and anti-seepage ability of whole outer heat preservation system.By the application in multiple engineerings, effectively improve the anti-crack and anti-seepage performance of external thermal insulation system, out-wall crack and seepage are prevented, and eliminate the come off potential safety hazard of falling from high altitude of warming plate, customer complaint and claim are reduced, reduce maintenance cost, reduced engineering use cost, obtained good economic benefit and social benefit.
Economic benefit or social benefit:
One, economic benefit
This engineering method is not increasing on the basis of cost, makes full use of existing material and structure level, and the common quality defect such as effectively reduce heat-insulation system cracking, seepage, come off has reduced customer complaint and claim, has reduced maintenance cost.
Economic benefits comparison (pressing 1,000,000 yuan of calculating of heat-insulation system construction costs)
As seen from the above table, adopt the anti-draining engineering method of External Thermal Insulation System can comprehensively save construction costs 17.2%.
Two, social benefit
1 engineering method by drainage channel is set, the deformability and water resistance, the thin portion of waterproofing node that improve each techonosphere process, and prevented outer wall cracking and seepage, and prevents that ponding pressure from crossing that ambassador's warming plate comes off, falling from high altitude.
2 efficiently solve crack and seepage problem, prevent customer complaint, complain to the higher authorities about an injustice and request fair settlement, and have positive effect for the reputation that improves construction enterprises.
3 adopt this engineering method, have eliminated the danger of warming plate high falling, have ensured the people's lives and property safety.
4 adopt this engineering method, have eliminated common quality defect and the potential safety hazard of external thermal insulation system, are conducive to further applying of external thermal insulation system, are conducive to promote the development of energy-saving building technology.
This engineering method is applicable to the external labeling type external thermal insulation system of various newly-built and reducing energy consumption engineerings.
Brief description of the drawings
Accompanying drawing 1 is the structural representation of external wall of the present invention, wherein, the 1st, base course wall, the 2nd, leveling layer, the 3rd, warming plate, the 4th, topping, the 5th, exterior wall coating material layer, the 6th, discharge opening.
Detailed description of the invention
Embodiment 1
The anti-drainage and construction method of External Thermal Insulation System that the present embodiment provides, comprises the following steps:
(1) body of wall base treatment
1) split bolt hole shutoff
Inner side, body of wall split bolt hole 2/3 degree of depth adopts asphalt mortar, bituminous mortar shutoff, and outside 1/3 degree of depth adopts polyurethane foam shutoff, and metope radius 250mm scope centered by bolt hole is brushed polyurethane water-proof paint 3 times, and thickness is not less than 1.5mm;
2) base treatment
Body of wall drum mould place adopts chip-axe to cut microgroove, and masonry mortar joint insatiable hunger everywhere embedding is in advance real, and cleaning wall mortar, greasy dirt, dust and foreign material make metope cleaning, dry;
(2) basic unit's levelling, drainage channel is set
1) basic unit's levelling
Basic unit adopts cement mortar screeding, mixes water proofing property Admixture in mortar, and it is real that leveling layer is smeared densification, pull-out fine, soft fur; Constuction joint stays slope stubble, brushes interfacial agents while connecing batch, bonding closely, surfacing;
2) drainage channel is set
Utilize the dividing joint of leveling layer to do drainage channel,
First snap the line lattice in basic unit, vertical horizontal spacing is not more than 3m;
Nail lattice-bounding bar, lattice-bounding bar adopts 20 × 20 battens, should be smooth vertical and horizontal, joint is tight, is close to metope, and surface is smooth-going consistent, the use of the floating screed that lattice-bounding bar is plastered as leveling layer,
3) drainage channel waterproofing work
1. drainage channel (dividing joint) surface is floating with polymer cement putty, and thickness is 2mm, and the gap in dividing joint, hole are smeared to densification reality, surfacing, smooth,
2. along in the each 250mm width range in dividing joint both sides, with polyurethane water-proof paint brushing 3 times, thickness is not less than 1.5mm,
4) discharge opening is set
, laterally every 20m, on warming plate, stay and establish outfall, and tapping pipe is installed every 20m along height, discharge in time the ponding in warming plate; The tapping pipe that discharge opening is set adopts Φ 25PVC pipe, stretches out warming plate surface layer 5cm.
(3) sticking heat-preservation plate
1) before warming plate is pasted, warming plate surface is processed,
2) when sticking heat-preservation plate, adhesive mortar is smeared to simultaneously by basic unit and the warming plate back side, applying mortar is avoided the position of drainage channel, prevents from stopping up drainage channel,
3) chemical anchor bolts, alkali resistant glass fibre open weave cloth are by design structure requirement construction, and chemical anchor bolts should anchor into and in agent structure, be not less than 50mm;
The warming plate adopting is the one in EPS, XPS plate, rock cotton board.
(4) smear polymers anti-cracking mortar topping
1) water proof type mortar preparation
In the proportioning of plastering mortar, various material weight account for the percentage of mortar gross weight and are: the wood fibre 3% of cement (42.5) 30%, coarse whiting 5%, 40-70 order sand 15.5%, 80-120 order sand 46.3%, HPMC (4000mPa.S) 0.2%, length 300 μ m, acrylic latex powder (7042W) 2.5%, the short PP fiber 0.1% of cutting of 5mm, organosilicon moisture repellent (0202S) 0.1%;
2) smear first pass water proof type mortar
After warming plate has been constructed, before back-up coat construction, use the material identical with plastering mortar, at one very thin waterproofing mortar of warming plate surface construction, thickness is 2-3mm;
One face wall water proof type mortar is wanted disposable having smeared, and does not stay constuction joint, front and back plaster to ensure interval time to plaster above before and after not initial set continuous plaster continue in time on;
As need stay while establishing constuction joint, should determine in advance constuction joint position, and retained ladder slope Hang Cha, negative and positive angle place is left in constuction joint position must not be less than 200mm; When constuction joint place continues construction, should remove loosening mortar, dirt, water cleans up, and dry rear brush interface treating agent, then continues to plaster;
First waterproofing mortar is answered surfacing, and pulls out fine, soft fur;
3) anchoring piece is installed
After the sclerosis of first water proof type mortar cover, anchoring piece is installed; The mode that starts to adopt sticky anchor combination from the first floor, is no less than 6/m 2, anchoring piece disk diameter is not less than 60mm, and securing member has bridge cut-off design, and anchoring piece disk can not be given prominence to warming plate, and crab-bolt, through alkali-resistant glass fiber mesh, in facade marginal portion, arranges an anchoring piece;
Anchoring piece length equals thickness+first plastering mortar thickness of the thickness+warming plate of anchorage depth+leveling layer+bonding adhesive.
Anchorage depth enters deck and is no less than 50mm.
4) back-up coat anti-cracking net and the construction of second plastering mortar
Large area Crack Resistance adopts alkali resistant glass fibre open weave cloth, and four jiaos of door and window hole adopt oblique glass fiber net to strengthen;
(1) the oblique reinforcement glass fiber net of door and window hole
Four jiaos at window opening and door opening adopt oblique reinforcement glass screen cloth, before carrying out large face reinforcement, oblique reinforcement screen cloth is imbedded in finishing mucilage and fixed, glass fiber net cloth edge is set directly at four jiaos, be 45 °, size 20cm × 40cm, door and window hole inner corner trim strengthens the long 40cm of net, width is consistent with door and window hole width
(2) large area back-up coat glass fiber net and the construction of second plastering mortar
Back-up coat should completely spread, system complete is covered, building first floor metope and the position that is subject to mechanical shock should adopt double-deck glass screen cloth to strengthen, after fixing warming plate and first topping rubber cement parch, can carry out the construction of back-up coat finishing mucilage, thickness is 2~3mm, then by glass screen cloth imbedding in wet finishing mucilage tightly, glass screen cloth should not have fold from top to bottom, at least overlapping 10cm between glass screen cloth, the position of grid cloth is at middle part or 1/3 place, outside of enhancement Layer, and necessary capped at least 1mm, at least 0.5mm of overlapping; For guaranteeing to cover suitably, alkali-resisting glass fiber screen cloth must be imbedded finishing mucilage under dampness;
(5) the thin portion of waterproofing node processes
1) the thin portion of door and window hole waterproof processes
Adopt " rear plug mouthful " way:
First complete the large-area decorative layer of facade, window covering Zhi Zuo basic unit bottom ash, after doorframe and window frame installation, secondary carries out the pargeting of window covering, finally carry out door and window polyurathamc and sealing around, doorframe and window frame upper, left, between three, the right side and finish coat, stay 5-8mm gap, be convenient on the one hand erection of doors and windows, can play regulating effect to expanding with heat and contract with cold of door and window simultaneously, in seam, adopt polyurethane foam shutoff, fluid sealant or sealant sealing for inside and outside both sides, 10-20mm under frame can be compressed in gap between the bottom of doorframe and window frame and ground or windowsill in the time smearing anticracking grout basic unit, seam is filled out extremely,
2) waterproofing course is received the processing of the thin portion of head
The end of waterproofing materials sealing heat insulating material, makes, under its protection in waterproofing course, waterproof roll or film paving to be extended in main body wall, and to the stickfast of web edge cushioning,
(1) the thin portion in staggered floor balcony processes
Before balcony construction of waterproof layer, by the heat-insulation plate for external of periphery upper strata body of wall apart from 400mm on balcony roofing highly, sawed-off 100mm is wide, in groove, wipe leveling layer, waterproof roll is labelled to upper strata exterior wall main body, nail envelope process after with polyurethane sealing edge, then repair insulation layer with glue powder polyphenyl particle, the surface layer of constructing again
(2) parapet place structure is processed
The parapet of roofing lower inner side inner corner trim that bears down on one, is the thin portion of receipts head of roof waterproof layer, and parapet warming plate is depressed into top board bottom surface 100mm distance, wipes leveling layer, waterproof roll is labelled on parapet, then mends with glue powder polyphenyl particle mortar;
(3) the thin portion of overhanging component processes
In the junction of exterior wall and overhanging component, inferior horn is done preventing local water treatment, and obstruct plane rainwater enters the intake tunnel of insulating layer of external wall;
3) shrinkage joint, settlement joint processing
Adopt multi-way prevention, composite water-proof;
(6) exterior wall finish
1) exterior wall coating material facing
Exterior wall coating material veneering water-proofing structure mainly comprises flexible putty and elastic coating
1. flexible putty
Moisture control to wall base body is not more than 8%,
Putty uses flexible putty, and the permission deformation values of putty should be 10-15%, must use the putty matching with coating, and guarantee is combined tightly with basic unit and dope layer, and delamination does not occur,
When painting is scraped, first hang thin layer, fully fill fine cracks and the hole of basic unit, be then coated with and scrape large area putty, putty should be coated with and scrape continuously, does not obviously connect stubble, and thinnest part thickness is not less than 1mm;
2. coating ornamental surface
Finish coat coating should be selected elastic coating, and its performance should meet the relevant requirements of GB/T9756-2001 " resin latex dope " and GB/T9755-2001 " exterior wall coating material of synthetic resin emulsion ";
2) facing tile facing
Face brick is selected ceramic glaze or all-body tile, select beneficial clay bonding, two-sided hanging, the wet technique to wet combining are taked in construction, and two-sided hanging means that the reeded back side of face brick band smears slurry and use as bonding, at basic unit's gauze wire cloth or the thin one deck slurry of smearing of fiberglass gridding cloth, as setting course; Wet is face brick to be sticked under moisture state in basic unit's hanging to wet combining, and hanging area is difficult for excessive, otherwise after air-dry, does not have the action effect of setting course, and mortar plumpness must reach the more than 90% of code requirement,
Jointing adhesive is selected in face brick jointing, and face brick is taked " sleeping, recessed joint ", and the degree of depth, lower than brick face 2-3mm, be forbidden to wipe seam, uses special tool jointing, compacting to even up,
(7) water pouring test
The waterproof effect of external wall heat insulation system is checked and accepted available continuous trickle method; open the aperture of Φ 2mm100 with the water pipe of Φ 20-25mm; choose exterior wall area continuous trickle 6h of highest point outside building of 30%; observe face, window surrounding within the walls, do not occur seepage, for substantially qualified; within second day, observe; external protection does not come off, plays drum or crackle, for qualified
Even can measure the leakage point that storm (or typhoon rain) also cannot measure if increase the trickle time to 12h (being equivalent to the torrential rain of continuous 2-3d).
Construction method described in the present embodiment is applied in the engineerings such as No. 6 building engineering of Qingdao Technological University's expert's apartment of my company construction, dream Times Square, the Pacific Ocean, Qingdao, the new Campus construction project of Qingdao radio and TV university, pass through application and construction, improve the energy-saving effect of building, outer wall cracking and seepage are prevented, customer complaint and claim are avoided, prevent the potential safety hazard that warming plate high-altitude comes off, saved expense, obtained good economic benefit and social benefit.

Claims (6)

1. the anti-drainage and construction method of External Thermal Insulation System, it is characterized in that the method from base treatment to final insulation, facing and the processing of thin portion formed the anti-drainage system of a whole set of system, concrete steps are: body of wall base treatment; Basic unit's levelling, drainage channel is set; Sticking heat-preservation plate; Smear polymers anti-cracking mortar topping; The thin portion of waterproofing node processes; Exterior wall finish; Water pouring test.
2. the anti-drainage and construction method of External Thermal Insulation System according to claim 1, is characterized in that, specifically comprises the following steps:
(1) body of wall base treatment
1) split bolt hole shutoff
Inner side, body of wall split bolt hole 2/3 degree of depth adopts asphalt mortar, bituminous mortar shutoff, and outside 1/3 degree of depth adopts polyurethane foam shutoff, and metope radius 250mm scope centered by bolt hole is brushed polyurethane water-proof paint 3 times, and thickness is not less than 1.5mm,
2) base treatment
Body of wall drum mould place adopts chip-axe to cut microgroove, and masonry mortar joint insatiable hunger everywhere embedding is in advance real, and cleaning wall mortar, greasy dirt, dust and foreign material make metope cleaning, dry,
(2) basic unit's levelling, drainage channel is set
1) basic unit's levelling
Basic unit adopts cement mortar screeding, mixes water proofing property Admixture in mortar, and it is real that leveling layer is smeared densification, pull-out fine, soft fur; Constuction joint stays slope stubble, brushes interfacial agents while connecing batch, bonding closely, surfacing,
2) drainage channel is set
Utilize the dividing joint of leveling layer to do drainage channel,
First snap the line lattice in basic unit, vertical horizontal spacing is not more than 3m,
Nail lattice-bounding bar, lattice-bounding bar adopts 20 × 20 battens, should be smooth vertical and horizontal, joint is tight, is close to metope, and surface is smooth-going consistent, the use of the floating screed that lattice-bounding bar is plastered as leveling layer,
3) drainage channel waterproofing work
1. drainage channel (dividing joint) surface is floating with polymer cement putty, and thickness is 2mm, and the gap in dividing joint, hole are smeared to densification reality, surfacing, smooth,
2. along in the each 250mm width range in dividing joint both sides, with polyurethane water-proof paint brushing 3 times, thickness is not less than 1.5mm,
4) discharge opening is set
, laterally every 20m, on warming plate, stay and establish outfall, and tapping pipe is installed every 20m along height, discharge in time the ponding in warming plate,
(3) sticking heat-preservation plate
1) before warming plate is pasted, warming plate surface is processed,
2) when sticking heat-preservation plate, adhesive mortar is smeared to simultaneously by basic unit and the warming plate back side, applying mortar is avoided the position of drainage channel, prevents from stopping up drainage channel,
3) chemical anchor bolts, alkali resistant glass fibre open weave cloth are by design structure requirement construction, and chemical anchor bolts should anchor into and in agent structure, be not less than 50mm,
(4) smear polymers anti-cracking mortar topping
1) water proof type mortar preparation
In the proportioning of plastering mortar, various material weight account for the percentage of mortar gross weight and are: the wood fibre 3% of cement (42.5) 30%, coarse whiting 5%, 40-70 order sand 15.5%, 80-120 order sand 46.3%, HPMC (4000mPa.S) 0.2%, length 300 μ m, acrylic latex powder (7042W) 2.5%, the short PP fiber 0.1% of cutting of 5mm, organosilicon moisture repellent (0202S) 0.1%
2) smear first pass water proof type mortar
After warming plate has been constructed, before back-up coat construction, use the material identical with plastering mortar, at one very thin waterproofing mortar of warming plate surface construction, thickness is 2-3mm,
One face wall water proof type mortar is wanted disposable having smeared, and does not stay constuction joint, front and back plaster to ensure interval time to plaster above before and after not initial set continuous plaster continue in time upper,
As need stay while establishing constuction joint, should determine in advance constuction joint position, and retained ladder slope Hang Cha, negative and positive angle place is left in constuction joint position must not be less than 200mm; When constuction joint place continues construction, should remove loosening mortar, dirt, water cleans up, and dry rear brush interface treating agent, then continues to plaster,
First waterproofing mortar is answered surfacing, and pulls out fine, soft fur,
3) anchoring piece is installed
After the sclerosis of first water proof type mortar cover, anchoring piece is installed; The mode that starts to adopt sticky anchor combination from the first floor, is no less than 6/m 2, anchoring piece disk diameter is not less than 60mm, and securing member has bridge cut-off design, and anchoring piece disk can not be given prominence to warming plate, and crab-bolt, through alkali-resistant glass fiber mesh, in facade marginal portion, arranges an anchoring piece,
4) back-up coat anti-cracking net and the construction of second plastering mortar
Large area Crack Resistance adopts alkali resistant glass fibre open weave cloth, and four jiaos of door and window hole adopt oblique glass fiber net to strengthen,
1. the oblique reinforcement glass fiber net of door and window hole
Four jiaos at window opening and door opening adopt oblique reinforcement glass screen cloth, before carrying out large face reinforcement, oblique reinforcement screen cloth is imbedded in finishing mucilage and fixed, glass fiber net cloth edge is set directly at four jiaos, be 45 °, size 20cm × 40cm, door and window hole inner corner trim strengthens the long 40cm of net, width is consistent with door and window hole width
2. large area back-up coat glass fiber net and the construction of second plastering mortar
Back-up coat should completely spread, system complete is covered, building first floor metope and the position that is subject to mechanical shock should adopt double-deck glass screen cloth to strengthen, after fixing warming plate and first topping rubber cement parch, can carry out the construction of back-up coat finishing mucilage, thickness is 2~3mm, then by glass screen cloth imbedding in wet finishing mucilage tightly, glass screen cloth should not have fold from top to bottom, at least overlapping 10cm between glass screen cloth, the position of grid cloth is at middle part or 1/3 place, outside of enhancement Layer, and necessary capped at least 1mm, at least 0.5mm of overlapping; For guaranteeing to cover suitably, alkali-resisting glass fiber screen cloth must be imbedded finishing mucilage under dampness;
(5) the thin portion of waterproofing node processes
1) the thin portion of door and window hole waterproof processes
Adopt " rear plug mouthful " way:
First complete the large-area decorative layer of facade, window covering Zhi Zuo basic unit bottom ash, after doorframe and window frame installation, secondary carries out the pargeting of window covering, finally carry out door and window polyurathamc and sealing around, doorframe and window frame upper, left, between three, the right side and finish coat, stay 5-8mm gap, be convenient on the one hand erection of doors and windows, can play regulating effect to expanding with heat and contract with cold of door and window simultaneously, in seam, adopt polyurethane foam shutoff, fluid sealant or sealant sealing for inside and outside both sides, 10-20mm under frame can be compressed in gap between the bottom of doorframe and window frame and ground or windowsill in the time smearing anticracking grout basic unit, seam is filled out extremely,
2) waterproofing course is received the processing of the thin portion of head
The end of waterproofing materials sealing heat insulating material, makes, under its protection in waterproofing course, waterproof roll or film paving to be extended in main body wall, and to the stickfast of web edge cushioning,
1. the thin portion in staggered floor balcony processes
Before balcony construction of waterproof layer, by the heat-insulation plate for external of periphery upper strata body of wall apart from 400mm on balcony roofing highly, sawed-off 100mm is wide, in groove, wipe leveling layer, waterproof roll is labelled to upper strata exterior wall main body, nail envelope process after with polyurethane sealing edge, then repair insulation layer with glue powder polyphenyl particle, the surface layer of constructing again
2. parapet place structure is processed
The parapet of roofing lower inner side inner corner trim that bears down on one, is the thin portion of receipts head of roof waterproof layer, and parapet warming plate is depressed into top board bottom surface 100mm distance, wipes leveling layer, waterproof roll is labelled on parapet, then mends with glue powder polyphenyl particle mortar;
3. the thin portion of overhanging component processes
In the junction of exterior wall and overhanging component, inferior horn is done preventing local water treatment, and obstruct plane rainwater enters the intake tunnel of insulating layer of external wall;
3) shrinkage joint, settlement joint processing
Adopt multi-way prevention, composite water-proof;
(6) exterior wall finish
1) exterior wall coating material facing
Exterior wall coating material veneering water-proofing structure mainly comprises flexible putty and elastic coating
1. flexible putty
Moisture control to wall base body is not more than 8%,
Putty uses flexible putty, and the permission deformation values of putty should be 10-15%, must use the putty matching with coating, and guarantee is combined tightly with basic unit and dope layer, and delamination does not occur,
When painting is scraped, first hang thin layer, fully fill fine cracks and the hole of basic unit, be then coated with and scrape large area putty, putty should be coated with and scrape continuously, does not obviously connect stubble, and thinnest part thickness is not less than 1mm,
2. coating ornamental surface
Finish coat coating should be selected elastic coating, and its performance should meet the relevant requirements of GB/T9756-2001 " resin latex dope " and GB/T9755-2001 " exterior wall coating material of synthetic resin emulsion ",
2) facing tile facing
Face brick is selected ceramic glaze or all-body tile, select beneficial clay bonding, two-sided hanging, the wet technique to wet combining are taked in construction, and two-sided hanging means that the reeded back side of face brick band smears slurry and use as bonding, at basic unit's gauze wire cloth or the thin one deck slurry of smearing of fiberglass gridding cloth, as setting course; Wet is face brick to be sticked under moisture state in basic unit's hanging to wet combining, and hanging area is difficult for excessive, otherwise after air-dry, does not have the action effect of setting course, and mortar plumpness must reach the more than 90% of code requirement,
Jointing adhesive is selected in face brick jointing, and face brick is taked " sleeping, recessed joint ", and the degree of depth, lower than brick face 2-3mm, be forbidden to wipe seam, uses special tool jointing, compacting to even up,
(7) water pouring test
The waterproof effect of external wall heat insulation system is checked and accepted available continuous trickle method; open the aperture of Φ 2mm100 with the water pipe of Φ 20-25mm; choose exterior wall area continuous trickle 6h of highest point outside building of 30%; observe face, window surrounding within the walls, do not occur seepage, for substantially qualified; within second day, observe; external protection does not come off, plays drum or crackle, for qualified
Even can measure the leakage point that storm (or typhoon rain) also cannot measure if increase the trickle time to 12h (being equivalent to the torrential rain of continuous 2-3d).
3. the anti-drainage and construction method of External Thermal Insulation System according to claim 1, is characterized in that, 4 in step (2)) tapping pipe that discharge opening is set adopts Φ 25PVC pipe, stretches out warming plate surface layer 5cm.
4. the anti-drainage and construction method of External Thermal Insulation System according to claim 1, is characterized in that, in step (3) sticking heat-preservation plate, the warming plate of employing is the one in EPS, XPS plate, rock cotton board.
5. the anti-drainage and construction method of External Thermal Insulation System according to claim 1, it is characterized in that, step 3) to install in anchoring piece, anchoring piece length equals thickness+first plastering mortar thickness of the thickness+warming plate of anchorage depth+leveling layer+bonding adhesive.
6. the anti-drainage and construction method of External Thermal Insulation System according to claim 5, is characterized in that, anchorage depth enters deck and is no less than 50mm.
CN201410435942.2A 2014-09-01 2014-09-01 Building exterior wall external thermal insulation system waterproof and drainage construction method CN104179263A (en)

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CN104674962A (en) * 2015-01-27 2015-06-03 安徽同济建设集团有限责任公司 Method for constructing external heat-insulation systems of external walls from expanded perlite heat-insulation plates
CN105019677A (en) * 2015-07-29 2015-11-04 北京中联天盛建材有限公司 Energy-saving and environment-friendly type waterproof and thermal preservation construction method of existing roof
CN105155784A (en) * 2015-10-28 2015-12-16 苏州奥莱鑫建材有限公司 Construction method for roof waterproof coating
CN105239678A (en) * 2015-09-29 2016-01-13 卓达新材料科技集团有限公司 Exterior wall plinth heat-insulation system of construction
CN106284998A (en) * 2015-06-08 2017-01-04 五冶集团上海有限公司 Plastering on inner walls completely spreads fiberglass gridding cloth construction method
CN107780627A (en) * 2016-08-30 2018-03-09 陈春来 A kind of exterior wall heat-insulating paint construction method
CN108005325A (en) * 2017-11-29 2018-05-08 深圳市信宇户外科技有限公司 A kind of composite rock wool slab heat-preserving decorative wall and its construction method
CN109577671A (en) * 2018-11-09 2019-04-05 谢家友 A kind of environment-friendly type window leak wall-surface patching method
CN109577590A (en) * 2018-11-29 2019-04-05 武汉市盘龙明达建筑有限公司 A kind of work of nature stone decorative construction method
CN109868913A (en) * 2018-12-30 2019-06-11 广东华工大建筑工程有限公司 A kind of building waterproof system
CN109898693A (en) * 2019-03-11 2019-06-18 江苏通州四建集团有限公司 A method of for building exterior wall heat preserving energy conservation and row's waterproof
CN110230363A (en) * 2019-07-04 2019-09-13 吉林建筑科技学院 A kind of super low energy consumption construction wall
CN110644627A (en) * 2019-09-16 2020-01-03 佛山建装建筑科技有限公司 Building waterproof coating and accumulated water testing method
CN110714538A (en) * 2019-12-10 2020-01-21 中苏控股有限公司 Thin outer wall external thermal insulation system that plasters of rock wool heat preservation fire prevention composite sheet
CN110835965A (en) * 2019-11-29 2020-02-25 上海宝冶集团有限公司 EPS module sandwich heat-preservation cast-in-place shear wall integrated hole part construction method
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CN104674962A (en) * 2015-01-27 2015-06-03 安徽同济建设集团有限责任公司 Method for constructing external heat-insulation systems of external walls from expanded perlite heat-insulation plates
CN106284998A (en) * 2015-06-08 2017-01-04 五冶集团上海有限公司 Plastering on inner walls completely spreads fiberglass gridding cloth construction method
CN105019677A (en) * 2015-07-29 2015-11-04 北京中联天盛建材有限公司 Energy-saving and environment-friendly type waterproof and thermal preservation construction method of existing roof
CN105239678A (en) * 2015-09-29 2016-01-13 卓达新材料科技集团有限公司 Exterior wall plinth heat-insulation system of construction
CN105155784A (en) * 2015-10-28 2015-12-16 苏州奥莱鑫建材有限公司 Construction method for roof waterproof coating
CN107780627A (en) * 2016-08-30 2018-03-09 陈春来 A kind of exterior wall heat-insulating paint construction method
CN108005325A (en) * 2017-11-29 2018-05-08 深圳市信宇户外科技有限公司 A kind of composite rock wool slab heat-preserving decorative wall and its construction method
CN109577671A (en) * 2018-11-09 2019-04-05 谢家友 A kind of environment-friendly type window leak wall-surface patching method
CN109577590A (en) * 2018-11-29 2019-04-05 武汉市盘龙明达建筑有限公司 A kind of work of nature stone decorative construction method
CN109868913A (en) * 2018-12-30 2019-06-11 广东华工大建筑工程有限公司 A kind of building waterproof system
CN109898693A (en) * 2019-03-11 2019-06-18 江苏通州四建集团有限公司 A method of for building exterior wall heat preserving energy conservation and row's waterproof
CN110230363A (en) * 2019-07-04 2019-09-13 吉林建筑科技学院 A kind of super low energy consumption construction wall
CN110644627A (en) * 2019-09-16 2020-01-03 佛山建装建筑科技有限公司 Building waterproof coating and accumulated water testing method
CN110835965A (en) * 2019-11-29 2020-02-25 上海宝冶集团有限公司 EPS module sandwich heat-preservation cast-in-place shear wall integrated hole part construction method
CN110714538A (en) * 2019-12-10 2020-01-21 中苏控股有限公司 Thin outer wall external thermal insulation system that plasters of rock wool heat preservation fire prevention composite sheet
CN111042362A (en) * 2019-12-30 2020-04-21 江苏建鸿环保材料科技有限公司 Gel non-combustible heat-insulation decorative plate external wall external heat-insulation system and construction method
CN111677138A (en) * 2020-06-19 2020-09-18 辽宁比尔芬建筑工程有限公司 Passive house construction control method

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