CN103964771A - Waterproof surface mortar for thermal insulation system outside building outer wall and application method thereof - Google Patents
Waterproof surface mortar for thermal insulation system outside building outer wall and application method thereof Download PDFInfo
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- CN103964771A CN103964771A CN201410190945.4A CN201410190945A CN103964771A CN 103964771 A CN103964771 A CN 103964771A CN 201410190945 A CN201410190945 A CN 201410190945A CN 103964771 A CN103964771 A CN 103964771A
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- thermal insulation
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Abstract
The invention relates to a building material, in particular to a waterproof surface mortar for a thermal insulation system outside a building outer wall and an application method thereof. The waterproof surface mortar is prepared from the following raw materials by weight percent: 30% of cement, 5% of coarse whiting, 15.5% of 40-70 mesh sand, 46.3% of 80-120 mesh sand, 0.2% of HPMC (Hydroxy Propyl Methyl Cellulose), 0.3% of wood fiber, 2.5% of acrylic based emulsion, 0.1% of PP (Propene Polymer) fiber and 0.1% of an organic silicone moisture repellent. When the waterproof surface mortar is used, water is added a stirrer according to a material-to-water mass ratio of 1: 0.25, then the waterproof surface mortar is added into the stirrer, is sufficiently stirred until no cluster appears, and is stirred again until no cluster appears after standing for 3-5 min, and the waterproof surface mortar is used up before initial set when being used. The waterproof surface mortar has the advantages that the crack resistance and impermeability of the thermal insulation system outside the outer wall are effectively improved, cracks and leakage of the outer wall are prevented, and potential safety hazards that thermal insulation boards fall off at a high altitude are eliminated, so that the complains and claims of a user are reduced, the maintenance cost is reduced, the engineering use cost is reduced, and good economic benefits and social benefits are obtained.
Description
Technical field
The present invention relates to a kind of material of construction, be specifically related to a kind of External Thermal Insulation System waterproof type plastering mortar and using method thereof.
Background technology
The heat insulating of architectural exterior-protecting construction is the important component part of building energy conservation, and the normal insulation type using has the three types such as interior insulation, outer insulation, self-heat conserving.Wherein, exterior wall internal insulation can take the interior space, and finish coat does not utilize secondary decoration and hanging ornament; The general body of wall of outer wall self heat-preserving (claiming again sandwich thermal insulated) is thicker, due to internal layer often intensity a little less than, between interior exterior wall, need to connect and cause heat bridge, reduce the efficiency of self-heat conserving; Share of market is the highest now, and what range of application was wider remains external thermal insulation system, and outer heat preservation system is suitable for southern and northern building and secondary transformation building; Outer insulation can also reduce the loss of heat bridge, extends the life-span of agent structure, strengthens building external decorative effect simultaneously.
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 thermal insulation layer water inlet, reduce energy-saving effect, also can not discharge in time because of moisture, in thermal insulation layer, a large amount of ponding forms larger wall pressure, increase the probability of moisture to indoor infiltration, warming plate has increased because wall 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
According to the deficiencies in the prior art, the present invention proposes a kind of External Thermal Insulation System waterproof type plastering mortar and using method thereof, improves the anti-crack and anti-seepage ability of whole outer heat preservation system.
A kind of External Thermal Insulation System waterproof type plastering mortar of the present invention, according to weight percent meter, formed by following preparation of raw material: cement 30%, coarse whiting 5%, 40～70 order sand 15.5%, 80～120 order sand 46.3%, HPMC0.2%, wood fibre 0.3%, acrylic latex powder 2.5%, PP fiber 0.1% and organosilicon moisture repellent 0.1%.
Wherein, the label of cement preferably uses 42.5.
The viscosity of HPMC is preferably 4000mPa.S.
The length of wood fibre is preferably 300 μ m.
The model of acrylic latex powder is preferably 7042W, is produced by Beijing Tianwei Baochen Chemical Product Co., Ltd..
The length of PP fiber is preferably that 5mm is short to be cut.
The model of organosilicon moisture repellent is preferably 0202S, is produced by Beijing Tianwei Baochen Chemical Product Co., Ltd..
The using method of waterproof type plastering mortar for External Thermal Insulation System of the present invention, in agitator, add water than 1:0.25 according to material quality, again waterproof type plastering mortar is joined in agitator, be stirred well to without bulk, after leaving standstill 3～5min, be stirred to again without bulk, when use, will before its initial set, be finished.
External Thermal Insulation System of the present invention is the part as External Thermal Insulation System with waterproof type plastering mortar, and External Thermal Insulation System is from inside to outside coated with screed-coat, warming plate, waterproof type plastering mortar, flexible putty and elastic coating successively along base course wall outside surface.Construction process is as follows: the levelling of body of wall base treatment-basic unit, drainage channel-sticking heat-preservation plate-smear the thin portion of waterproof type plastering mortar-waterproofing node process-to scrape flexible putty-brushing elastic coating-water pouring test is set.Wherein, each link concrete steps are respectively:
(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 bituminous mortar shutoff, and outside 1/3 degree of depth adopts polyurethane foam shutoff, and metope is radius 250mm scope brush polyurethane water-proof paint 3 times (thickness is not less than 1.5mm) centered by bolt hole.
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, in mortar, should mix water-repellancy admixture.It is real that screed-coat should be smeared densification, pull-out fine, soft fur.Reduce construction joint as far as possible.Construction joint should stay slope stubble, while connecing batch, should brush interfacial agents, careful processing, bonding closely, surfacing.
2) drainage channel is set
Utilize the dividing joint of screed-coat to do drainage channel.
First snap the line lattice in basic unit, vertical transverse pitch 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, and 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 screed-coat plasters.
3) drainage channel WATER REPELLENT
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.
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 discharge opening, and water discharge pipe is installed every 20m along height, discharge in time the ponding in warming plate.Water discharge pipe adopts Φ 25PVC pipe, stretches out warming plate surface layer 5cm.
(3) sticking heat-preservation plate
1) Young's modulus of warming plate affects the splitting resistance of heat insulation system, and Young's modulus 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 Young's modulus of EPS plate, rock cotton board, XPS thin plastering exterior wall external insulation system more easily cracks.So in the time selecting lagging material, ensureing, under the prerequisite of thermal property and system safety, should preferentially to select the less sheet materials of Young's modulus 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 waterproof type plastering mortar
1) smear first pass waterproof 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 waterproof mortar of warming plate surface construction (thickness 2-3mm).
One face wall waterproof type mortar disposable having smeared of will trying one's best, does not stay construction 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 construction joint, should determine in advance construction joint position, and retained ladder slope Hang Cha, negative and positive angle place is left in construction joint position must not be less than 200mm.When construction joint place continues construction, should remove loosening mortar, dirt, water cleans up, and dry rear brush interface treating agent, then continues to plaster.
First waterproof mortar is answered surfacing, and pulls out fine, soft fur.
2) anchoring piece is installed
After the sclerosis of first waterproof 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/m2, has particular requirement to determine according to body of wall screed-coat bearing capacity and actual wind loading.Determining of anchoring piece length: thickness+first plastering mortar thickness of the thickness+warming plate of anchorage depth (enter structural sheet and be no less than 50mm)+screed-coat+tackiness agent, anchoring piece disk diameter is not less than 60mm, and fastening piece 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 edge section, need to increase an anchoring piece.
3) back-up coat anti-cracking net and the construction of second plastering mortar
Big area Crack Resistance adopts alkali resistant glass fibre open weave cloth, and four jiaos of door-window openings adopt oblique glass fiber net to strengthen.
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 450.Size is 20cm × 40cm at least.In addition, door-window opening inner corner trim strengthens the long 40cm of net, and width is consistent with door-window opening width.
Back-up coat should completely spread, and system complete is covered.Buildings 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 protective layer mortar parch, can carry out the construction of back-up coat plastering mortar, thickness is 2～3mm.Then by glass screen cloth imbedding in wet plastering mortar 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 plastering mortar under dampness.
(5) the thin portion of waterproofing node processes
Door-window opening, waterproof layer are received the thin portion WATER REPELLENT at the positions such as head, expansion joint, settlement joint.
(6) scrape flexible putty
Must control and be not more than 8% the water ratio 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 big area putty.Putty should be coated with and scrape continuously, does not obviously connect stubble, and thinnest part thickness is not less than 1mm.
(7) brushing elastic coating
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 tensile deformation 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, weathering resistance etc.Waterproof 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.
(8) 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 2mm 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 Storms (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 advantages that: the principle that adopts anti-row's combination, by improving the material of plastering mortar, proportioning and construction technology, drainage channel is set in screed-coat, improve the thin portion treatment measures at waterproofing node position, and take " successively gradual change, flexible break resistant, to 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, reduce engineering use cost, good economic benefit and social benefit are obtained.
Embodiment
Below in conjunction with embodiment, the present invention will be further described.
Embodiment 1
A kind of External Thermal Insulation System waterproof type plastering mortar, is formed by following preparation of raw material: cement 30kg, coarse whiting 5kg, 40～70 order sand 15.5kg, 80～120 order sand 46.3kg, HPMC0.2kg, wood fibre 0.3kg, acrylic latex powder 2.5kg, PP fiber 0.1kg and organosilicon moisture repellent 0.1kg.
Wherein, the label of cement selects 42.5.
The viscosity of HPMC is 4000mPa.S.
The length of wood fibre is 300 μ m.
The model of acrylic latex powder is 7042W, is produced by Beijing Tianwei Baochen Chemical Product Co., Ltd..
To be that 5mm is short cut the length of PP fiber.
The model of organosilicon moisture repellent is 0202S, is produced by Beijing Tianwei Baochen Chemical Product Co., Ltd..
When use, according to material quality than 1:0.25 to the 25kg that adds water in agitator, then waterproof type plastering mortar is joined in agitator, be stirred well to without bulk, be stirred to again without bulk after leaving standstill 5min, when use, to before its initial set, be finished.
Specific construction is according to following steps:
1) smear first pass waterproof 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 waterproof mortar of warming plate surface construction (thickness 2-3mm).
One face wall waterproof type mortar disposable having smeared of will trying one's best, does not stay construction 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 construction joint, should determine in advance construction joint position, and retained ladder slope Hang Cha, negative and positive angle place is left in construction joint position must not be less than 200mm.When construction joint place continues construction, should remove loosening mortar, dirt, water cleans up, and dry rear brush interface treating agent, then continues to plaster.
First waterproof mortar is answered surfacing, and pulls out fine, soft fur.
2) anchoring piece is installed
After the sclerosis of first waterproof 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/m2, has particular requirement to determine according to body of wall screed-coat bearing capacity and actual wind loading.Determining of anchoring piece length: thickness+first plastering mortar thickness of the thickness+warming plate of anchorage depth (enter structural sheet and be no less than 50mm)+screed-coat+tackiness agent, anchoring piece disk diameter is not less than 60mm, and fastening piece 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 edge section, need to increase an anchoring piece.
3) back-up coat anti-cracking net and the construction of second plastering mortar
Big area Crack Resistance adopts alkali resistant glass fibre open weave cloth, and four jiaos of door-window openings adopt oblique glass fiber net to strengthen.
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 450.Size is 20cm × 40cm at least.In addition, door-window opening inner corner trim strengthens the long 40cm of net, and width is consistent with door-window opening width.
Back-up coat should completely spread, and system complete is covered.Buildings 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 protective layer mortar parch, can carry out the construction of back-up coat plastering mortar, thickness is 2～3mm.Then by glass screen cloth imbedding in wet plastering mortar 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 plastering mortar under dampness.
Claims (8)
1. an External Thermal Insulation System waterproof type plastering mortar, it is characterized in that according to weight percent meter, formed by following preparation of raw material: cement 30%, coarse whiting 5%, 40～70 order sand 15.5%, 80～120 order sand 46.3%, HPMC0.2%, wood fibre 0.3%, acrylic latex powder 2.5%, PP fiber 0.1% and organosilicon moisture repellent 0.1%.
2. a kind of External Thermal Insulation System plastering mortar according to claim 1, is characterized in that the label of cement selects 42.5.
3. a kind of External Thermal Insulation System plastering mortar according to claim 1, the viscosity that it is characterized in that HPMC is 4000mPa.S.
4. a kind of External Thermal Insulation System plastering mortar according to claim 1, the length that it is characterized in that wood fibre is 300 μ m.
5. a kind of External Thermal Insulation System plastering mortar according to claim 1, the model that it is characterized in that acrylic latex powder is 7042W.
6. a kind of External Thermal Insulation System plastering mortar according to claim 1, to be that 5mm is short cut the length that it is characterized in that PP fiber.
7. a kind of External Thermal Insulation System plastering mortar according to claim 1, the model that it is characterized in that organosilicon moisture repellent is 0202S.
8. the using method of an External Thermal Insulation System use waterproof type plastering mortar claimed in claim 1, it is characterized in that in agitator, adding water than 1:0.25 according to material quality, again waterproof type plastering mortar is joined in agitator, be stirred well to without bulk, after leaving standstill 3～5min, be stirred to again without bulk, when use, will before its initial set, be finished.
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Cited By (6)
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| CN104179263A (en) * | 2014-09-01 | 2014-12-03 | 中启胶建集团有限公司 | Building exterior wall external thermal insulation system waterproof and drainage construction method |
| CN104895202A (en) * | 2015-06-17 | 2015-09-09 | 青岛海川建设集团有限公司 | Building external wall insulation construction method based on vitrified microsphere compound polyurethane |
| CN107100334A (en) * | 2017-05-19 | 2017-08-29 | 吉林科龙建筑节能科技股份有限公司 | A kind of external wall outer insulation fireproof anti-cracking protector and construction method |
| CN107857534A (en) * | 2017-11-03 | 2018-03-30 | 广西美展化工科技有限公司 | High crack resistance type cement batch lime and brick and preparation method thereof |
| CN113550451A (en) * | 2021-07-24 | 2021-10-26 | 南京坤佳防水防腐保温工程有限公司 | Waterproof construction method for building outer wall |
| CN114876133A (en) * | 2022-05-25 | 2022-08-09 | 北京国洋保温防水工程有限公司 | Building roof waterproof construction method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104179263A (en) * | 2014-09-01 | 2014-12-03 | 中启胶建集团有限公司 | Building exterior wall external thermal insulation system waterproof and drainage construction method |
| CN104895202A (en) * | 2015-06-17 | 2015-09-09 | 青岛海川建设集团有限公司 | Building external wall insulation construction method based on vitrified microsphere compound polyurethane |
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| CN107857534A (en) * | 2017-11-03 | 2018-03-30 | 广西美展化工科技有限公司 | High crack resistance type cement batch lime and brick and preparation method thereof |
| CN113550451A (en) * | 2021-07-24 | 2021-10-26 | 南京坤佳防水防腐保温工程有限公司 | Waterproof construction method for building outer wall |
| CN114876133A (en) * | 2022-05-25 | 2022-08-09 | 北京国洋保温防水工程有限公司 | Building roof waterproof construction method |
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