CN111188421A - Construction method of anti-cracking exterior wall heat-insulating coating - Google Patents

Construction method of anti-cracking exterior wall heat-insulating coating Download PDF

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Publication number
CN111188421A
CN111188421A CN202010028447.5A CN202010028447A CN111188421A CN 111188421 A CN111188421 A CN 111188421A CN 202010028447 A CN202010028447 A CN 202010028447A CN 111188421 A CN111188421 A CN 111188421A
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CN
China
Prior art keywords
layer
heat
extruded polystyrene
polystyrene board
coating
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Pending
Application number
CN202010028447.5A
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Chinese (zh)
Inventor
马飒路
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马飒路
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Priority to CN202010028447.5A priority Critical patent/CN111188421A/en
Publication of CN111188421A publication Critical patent/CN111188421A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74Heat, sound or noise insulation, absorption, or reflection . Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76Heat, sound or noise insulation, absorption, or reflection . Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74Heat, sound or noise insulation, absorption, or reflection . Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76Heat, sound or noise insulation, absorption, or reflection . Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E04B1/762Exterior insulation of exterior walls
    • E04B1/7629Details of the mechanical connection of the insulation to the wall
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00Coverings or linings, e.g. for walls or ceilings
    • E04F13/07Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
    • E04F13/08Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
    • E04F13/0801Separate fastening elements
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00Coverings or linings, e.g. for walls or ceilings
    • E04F13/07Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
    • E04F13/08Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
    • E04F13/0875Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements having a basic insulating layer and at least one covering layer

Abstract

The invention relates to the technical field of wall heat preservation, and discloses a construction method of an anti-cracking external wall heat preservation coating, which comprises a wall body, wherein a putty layer is coated on the front surface of the wall body, a bonding layer is coated on the front surface of the putty layer, extruded polystyrene boards which are assembled in a staggered mode are uniformly arranged on the front surface of the bonding layer, anchoring nails are arranged at four corners of the inner side of each extruded polystyrene board in a penetrating mode, a first heat preservation adhesive cement layer is coated on the front surface of each extruded polystyrene board, and a second heat preservation adhesive cement layer is arranged on the front side of glass fiber gridding cloth. According to the invention, the extruded polystyrene board is fixed through the bonding layer and the anchoring nails, and the first heat-insulating adhesive cement layer, the glass fiber mesh cloth and the second heat-insulating adhesive cement layer are sequentially arranged on the outer surface of the extruded polystyrene board, so that the heat-insulating layer is firmly bonded together, and the extruded polystyrene board has the advantages of higher heat resistance coefficient, water permeability, water vapor wet flow density and impact strength, and lower water absorption capacity, and further the heat-insulating layer is prevented from cracking in the long-time use process.

Description

Construction method of anti-cracking exterior wall heat-insulating coating
Technical Field
The invention relates to the technical field of wall heat insulation, in particular to a construction method of an anti-cracking exterior wall heat insulation coating.
Background
With the advanced development of urbanization in China, more and more high buildings are pulled out of the ground, so that a large amount of energy is consumed, in order to meet the requirement of energy conservation, heat insulation treatment needs to be carried out on the outer wall for new and old buildings, particularly for northern areas in China, the outer wall belongs to areas which are cold in winter and hot in summer, and heat insulation needs to be carried out on the outer wall more.
The chinese patent discloses a construction method of a heat-insulating outer wall (No. CN105089164B), which can complete the construction of a predetermined heat-insulating layer thickness at one time by preparing a supporting block in advance, thereby shortening the construction period, but the heat-insulating effect is not good, and the cracking phenomenon is easy to occur during the long-time use, thereby causing the short service life of the heat-insulating layer. Therefore, those skilled in the art have provided a method for constructing an anti-cracking exterior wall thermal insulation coating, so as to solve the problems mentioned in the background art.
Disclosure of Invention
The invention aims to provide a construction method of an anti-cracking exterior wall heat-insulating coating, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a construction method of anti-cracking outer wall heat preservation coating, includes the wall body, the front surface of wall body is brushed with the putty layer, the front surface of putty layer is brushed with the tie coat, the front surface of tie coat evenly is provided with the extruded polystyrene board that the wrong joint was assembled, the four corners of the inboard of extruded polystyrene board all runs through and is provided with the anchor nail, and the front surface of extruded polystyrene board is brushed with first heat preservation adhesive cement layer, the front side on first heat preservation adhesive cement layer is provided with glass fiber net cloth, the front side on glass fiber net cloth is provided with second heat preservation adhesive cement layer, the front side on second heat preservation adhesive cement layer is provided with outer veneer.
As a further scheme of the invention: the bonding layer is single-component polymer mortar, and the single-component polymer mortar is formed by mixing and stirring redispersible latex powder and water.
As a still further scheme of the invention: the extruded polystyrene board is fixed on the inner side of the wall body through the anchoring nails, and the extruded polystyrene board has a heat conductivity coefficient of less than or equal to 0.025W/, a compression strength of 180-240 kPa, a tensile strength of more than or equal to 280kPa, and a water absorption of less than or equal to 1.2%.
As a still further scheme of the invention: the glass fiber mesh cloth is an alkali-resistant glass fiber mesh cloth with alkali-resistant resin sprayed on the surface, the first heat-preservation mortar layer and the second heat-preservation mortar layer are both bi-component polymer mortar, and the bi-component polymer mortar is formed by mixing and stirring inorganic polymer emulsion, dry powder materials and water.
As a still further scheme of the invention: the realization method comprises the following steps:
s1, preparing materials, preparing a bonding layer, a first heat-preservation mortar layer and a second heat-preservation mortar layer, and cleaning the outer surface of the wall body to ensure that the outer surface of the wall body is kept firm, solid and flat without floating dust and oil stain;
s2, coating the putty layer, wherein the putty layer is coated in two times, the first time is to coat the outer wall surface of the wall with putty powder and perform local leveling and hollow part repairing, the second time is to coat the outer wall surface of the wall again and use a scraper to scrape, and after the surface of the putty layer is dried, the surface of the putty layer is polished by using abrasive paper to ensure that the surface is glossy and smooth;
s3, brushing a bonding layer on the putty layer, brushing the bonding layer twice, brushing the first time for 12 hours, brushing the second time, sticking the extruded polystyrene board before the bonding layer is not solidified for the second time, and punching anchoring nails into four corners of the extruded polystyrene board after 24 hours, wherein the anchoring nails are embedded into the inner side of the wall body;
s4, uniformly brushing the first heat-preservation mortar layer twice on the surface of the extruded polystyrene board, pressing the glass fiber mesh cloth onto the first heat-preservation mortar layer before the first heat-preservation mortar layer is not solidified, and keeping the surface of the glass fiber mesh cloth smooth;
and S5, uniformly coating a second heat-preservation adhesive cement layer on the surface of the glass fiber mesh fabric for three times, maintaining for 24 hours, properly prolonging the maintenance time when the indoor temperature is lower than 5 ℃, coating an outer decorative surface on the surface of the second heat-preservation adhesive cement layer after the maintenance is finished, and keeping the surface of the outer decorative surface flat and free of wrinkles.
Compared with the prior art, the invention has the beneficial effects that:
fix the extruded polystyrene board through tie coat and anchor nail, set gradually first heat preservation adhesive cement layer at the surface of extruded polystyrene board, glass fibre net cloth and second heat preservation adhesive cement layer, thereby make the heat preservation firmly bond together, higher coefficient of heat resistance has, the water permeability, the wet density of flowing of steam and impact strength, and have lower water absorption, and then make the heat preservation not take place the fracture phenomenon in long-time use, the service life of heat preservation has been improved, the thermal insulation performance has been increased.
Drawings
FIG. 1 is a schematic structural diagram of a construction method of an anti-cracking exterior wall heat-insulating coating.
In the figure: 1. a wall body; 2. a putty layer; 3. a bonding layer; 4. anchoring nails; 5. extruded polystyrene board; 6. a first heat-preserving mucilage layer; 7. glass fiber mesh cloth; 8. a second heat-insulating mortar layer; 9. and (6) an outer decorative surface.
Detailed Description
Referring to fig. 1, in the embodiment of the present invention, a construction method of an anti-cracking exterior wall thermal insulation coating includes a wall 1, a putty layer 2 is coated on a front surface of the wall 1, a bonding layer 3 is coated on a front surface of the putty layer 2, extruded polystyrene boards 5 assembled in a staggered manner are uniformly arranged on a front surface of the bonding layer 3, anchor nails 4 are arranged at four corners of an inner side of each extruded polystyrene board 5 in a penetrating manner, a first thermal insulation mortar layer 6 is coated on a front surface of each extruded polystyrene board 5, a glass fiber mesh 7 is arranged on a front side of each first thermal insulation mortar layer 6, a second thermal insulation mortar layer 8 is arranged on a front side of each glass fiber mesh 7, and an exterior surface 9 is arranged on a front side of each second thermal insulation mortar layer 8.
Preferably, the adhesive layer 3 is a single-component polymer mortar formed by mixing and stirring redispersible latex powder and water.
Preferably, the extruded polystyrene board 5 is fixed on the inner side of the wall 1 through the anchoring nails 4, and the extruded polystyrene board 5 has a thermal conductivity of less than or equal to 0.025W/M.K, a compressive strength of 180-240 kPa, a tensile strength of more than or equal to 280kPa, and a water absorption of less than or equal to 1.2%.
Preferably, the glass fiber mesh cloth 7 is an alkali-resistant glass fiber mesh cloth with alkali-resistant resin sprayed on the surface, the first heat-insulating mortar layer 6 and the second heat-insulating mortar layer 8 are both double-component polymer mortar, and the double-component polymer mortar is formed by mixing and stirring inorganic polymer emulsion, dry powder material and water.
Preferably, the method comprises the following steps:
s1, preparing materials, preparing a bonding layer 3, a first heat-preservation mortar layer 6 and a second heat-preservation mortar layer 8, and cleaning the outer surface of the wall body 1 to ensure that the outer surface of the wall body 1 is kept firm, solid, flat, free of floating dust and free of oil stain;
s2, painting the putty layer 2 twice, firstly painting putty powder on the outer wall surface of the wall body 1, performing local leveling and hollow part repairing, secondly painting the outer wall surface of the wall body 1 again, leveling by a scraper, and after the surface of the putty layer 2 is dried, polishing the surface by using abrasive paper to enable the surface to be glossy and smooth;
s3, coating the adhesive layer 3 on the putty layer 2, coating the adhesive layer 3 in two times, coating the adhesive layer 3 for 12 hours for the first time, coating the adhesive layer for the second time, attaching the extruded polystyrene board 5 before the adhesive layer 3 is not solidified for the second time, and driving the anchoring nails 4 into four corners of the extruded polystyrene board 5 after 24 hours, wherein the anchoring nails 4 are embedded into the inner side of the wall body 1;
s4, uniformly brushing the first heat-preservation mortar layer 6 twice on the surface of the extruded polystyrene board 5, pressing the glass fiber grid cloth 7 onto the first heat-preservation mortar layer 6 before the first heat-preservation mortar layer 6 is not solidified, and keeping the surface of the glass fiber grid cloth 7 flat;
s5, uniformly coating the second heat-preservation adhesive cement layer 8 on the surface of the glass fiber grid cloth 7 for three times, maintaining for 24 hours, properly prolonging the maintenance time when the indoor temperature is lower than 5 ℃, coating the exterior facing 9 on the surface of the second heat-preservation adhesive cement layer 8 after the maintenance is finished, and keeping the surface of the exterior facing 9 flat and free of wrinkles.
Comparative example: a common construction method of exterior wall heat-insulating paint.
The embodiment and the comparative example are constructed according to respective construction methods in the same environment, and after the heat preservation layer reaches the designed strength, the heat resistance coefficient (square meter K/W), the water permeability (ml/24h), the water vapor wet flow density (g/square meter h), the water absorption capacity (g/square meter/24 h) and the impact strength (J) are respectively compared.
The specific comparison results are shown in the following table:
from the above table it can be analytically concluded that: the thermal retardation coefficient, water permeability, moisture vapor flow density and impact strength of the examples are all greater than those of the comparative examples, and the water absorption capacity of the examples is less than that of the comparative examples, so that it can be seen that the performance indexes of the examples are all superior to those of the comparative examples.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention are equivalent to or changed within the technical scope of the present invention.

Claims (5)

1. The utility model provides a construction method of anti-cracking exterior wall insulation coating, includes wall body (1), its characterized in that, the front surface of wall body (1) is brushed with putty layer (2), the front surface of putty layer (2) is brushed with tie coat (3), the front surface of tie coat (3) evenly is provided with extruded polystyrene board (5) that the fissure of displacement was assembled, the four corners of the inboard of extruded polystyrene board (5) all runs through and is provided with anchor nail (4), and the front surface of extruded polystyrene board (5) is brushed with first heat preservation mortar layer (6), the front side of first heat preservation mortar layer (6) is provided with glass fiber net cloth (7), the front side of glass fiber net cloth (7) is provided with second heat preservation mortar layer (8), the front side of second heat preservation mortar layer (8) is provided with exterior finish (9).
2. The construction method of the anti-cracking exterior wall thermal insulation coating according to claim 1, wherein the bonding layer (3) is a single-component polymer mortar formed by mixing and stirring redispersible latex powder and water.
3. The construction method of the anti-cracking exterior wall thermal insulation coating according to claim 1, wherein the extruded polystyrene board (5) is fixed on the inner side of the wall body (1) through anchoring nails (4), and the extruded polystyrene board (5) has a thermal conductivity of not more than 0.025W/(M.K), a compressive strength of 180-240 kPa, a tensile strength of not less than 280kPa, and a water absorption of not more than 1.2%.
4. The method for constructing an anti-cracking exterior wall thermal insulation coating according to claim 1, wherein the fiberglass mesh (7) is an alkali-resistant fiberglass mesh coated with alkali-resistant resin, the first thermal insulation mortar layer (6) and the second thermal insulation mortar layer (8) are both a two-component polymer mortar, and the two-component polymer mortar is formed by mixing and stirring inorganic polymer emulsion, dry powder material and water.
5. The construction method of the anti-cracking exterior wall heat-insulating coating as claimed in any one of claims 1 to 4, characterized in that the implementation method comprises the following steps:
s1, preparing materials, preparing an adhesive layer (3), a first heat-preservation mortar layer (6) and a second heat-preservation mortar layer (8), and cleaning the outer surface of the wall body (1) to ensure that the outer surface of the wall body (1) is firm, solid, flat, free of floating dust and free of oil stain;
s2, painting the putty layer (2) twice, firstly painting putty powder on the outer wall surface of the wall body (1) for the first time, performing local leveling and hollow part repairing, secondly painting the outer wall surface of the wall body (1) for the second time, scraping with a scraper plate, and after the surface of the putty layer (2) is dried, polishing the surface with sand paper to enable the surface to be glossy and flat;
s3, coating a bonding layer (3) on the putty layer (2), coating the bonding layer (3) twice, coating the bonding layer for 12 hours for the first time, coating the bonding layer for the second time, attaching an extruded polystyrene board (5) before the bonding layer (3) is not solidified for the second time, and driving anchoring nails (4) into four corners of the extruded polystyrene board (5) after 24 hours, wherein the anchoring nails (4) are embedded into the inner side of the wall body (1);
s4, uniformly brushing the first heat-preservation adhesive cement layer (6) twice on the surface of the extruded polystyrene board (5), pressing the glass fiber mesh cloth (7) onto the first heat-preservation adhesive cement layer (6) before the first heat-preservation adhesive cement layer (6) is not solidified, and keeping the surface of the glass fiber mesh cloth (7) flat;
s5, uniformly coating the second heat-preservation adhesive cement layer (8) on the surface of the glass fiber mesh cloth (7) for three times, maintaining for 24 hours, properly prolonging the maintenance time when the indoor temperature is lower than 5 ℃, coating the outer facing (9) on the surface of the second heat-preservation adhesive cement layer (8) after the maintenance is finished, and keeping the surface of the outer facing (9) flat and free of wrinkles.
CN202010028447.5A 2020-01-10 2020-01-10 Construction method of anti-cracking exterior wall heat-insulating coating Pending CN111188421A (en)

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CN202010028447.5A CN111188421A (en) 2020-01-10 2020-01-10 Construction method of anti-cracking exterior wall heat-insulating coating

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Application Number Priority Date Filing Date Title
CN202010028447.5A CN111188421A (en) 2020-01-10 2020-01-10 Construction method of anti-cracking exterior wall heat-insulating coating

Publications (1)

Publication Number Publication Date
CN111188421A true CN111188421A (en) 2020-05-22

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000030201A (en) * 2000-02-07 2000-06-05 윤문옥 The adiabatic construction method of outwall
CN101117846A (en) * 2007-08-14 2008-02-06 刘文国 Heat-insulating clad plate
CN101545286A (en) * 2009-04-28 2009-09-30 武汉地产开发投资集团有限公司 Method for constructing thermal insulation house
CN102561685A (en) * 2010-12-13 2012-07-11 五冶集团上海有限公司 Construction method of extruded polystyrene foamed plastic insulation boards in house energy-saving materials

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000030201A (en) * 2000-02-07 2000-06-05 윤문옥 The adiabatic construction method of outwall
CN101117846A (en) * 2007-08-14 2008-02-06 刘文国 Heat-insulating clad plate
CN101545286A (en) * 2009-04-28 2009-09-30 武汉地产开发投资集团有限公司 Method for constructing thermal insulation house
CN102561685A (en) * 2010-12-13 2012-07-11 五冶集团上海有限公司 Construction method of extruded polystyrene foamed plastic insulation boards in house energy-saving materials

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