CN110835962A - Construction method of building heat-insulation outer wall - Google Patents
Construction method of building heat-insulation outer wall Download PDFInfo
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- CN110835962A CN110835962A CN201911109212.2A CN201911109212A CN110835962A CN 110835962 A CN110835962 A CN 110835962A CN 201911109212 A CN201911109212 A CN 201911109212A CN 110835962 A CN110835962 A CN 110835962A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, 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
- E04B1/78—Heat insulating elements
- E04B1/80—Heat insulating elements slab-shaped
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
- E04B1/6801—Fillings therefor
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
- E04B1/6813—Compressable seals of hollow form
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, 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
- E04B1/762—Exterior insulation of exterior walls
- E04B1/7625—Details of the adhesive connection of the insulation to the wall
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, 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
- E04B1/762—Exterior insulation of exterior walls
- E04B1/765—Bottom edge finishing profile
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Acoustics & Sound (AREA)
- Building Environments (AREA)
Abstract
The invention relates to a construction method of a building heat-insulation outer wall, belonging to the technical field of outer wall heat-insulation construction. According to the method, the polyurethane pipes are filled in gaps among the heat insulation plates, so that the reaction force of mutual extrusion between the plates acts on the polyurethane pipes when the heat insulation plates are in a thermal deformation state, the polyurethane pipes deform to buffer the reaction force on the polyurethane pipes, and the reaction force between the plates is reduced. And due to the good heat insulation performance of polyurethane, the polyurethane pipe can be filled, so that a cavity formed by a gap can be prevented from improving the heat conductivity coefficient and reducing the heat insulation performance of the heat insulation outer wall.
Description
Technical Field
The invention relates to the technical field of external wall heat insulation construction, in particular to a construction method of a building heat insulation external wall.
Background
According to the requirements of the 'external wall insulation technical code' in China, the external insulation system of the building external wall is an organic integral system. If the structural design defect of the external thermal insulation system of the external wall of the building does not exist, the key factor of the external thermal insulation quality of the external wall is the performance of the material formed by the system. The overall matching coordination performance of the system material is an important material basis for realizing the anti-cracking structure design of the external thermal insulation system of the building external wall. Since the external thermal insulation system of the external wall is a functional system formed by a multilayer structure, the functional requirements of a single structural layer and the compatibility and matching of the mutual cooperation of different structural layers need to be considered.
The poor flexibility of the building heat-insulating material can easily cause temperature shrinkage cracks on the surface layer of the building outer wall, so that the heat-insulating material with certain strength and good deformation performance is very important for the outer wall external heat-insulating system.
Among the prior art, the extruded benzene board has its deformation performance not enough of higher intensity decision as the heated board to when great difference in temperature changes appearing, will bring great deformation stress in the board, the horizontal crack between the board seam that appears more this moment, mainly because the result of the reaction force that produces between the adjacent plate.
Disclosure of Invention
The invention aims to provide a construction method of a building heat-insulation outer wall, which has the advantage of buffering the reaction force between heat-insulation plates so as to reduce transverse cracks between plate joints.
The above object of the present invention is achieved by the following technical solutions: a construction method of a heat-insulating outer wall of a building comprises the following steps: s1: coating a mortar leveling layer on the surface of the wall base layer; s2: fixing the bracket at the bottom of the installation position of the insulation board by using an expansion bolt at the bottom of the mortar leveling layer; s3: coating a strip of adhesive cement with the average width of 50mm and the thickness of 5mm-10mm on the periphery of the heat insulation plate, and performing point bonding on 5-10 adhesive cements with the diameters of 80mm-100mm and the thicknesses in the heat insulation plate, wherein the ratio of the adhesive cement to the bonding area of the heat insulation plate is not less than 50%; s4: transversely sticking the heat-insulation plates on the mortar leveling layer from bottom to top along the horizontal direction from the upper end surface of the bracket, and reserving a gap of 20mm between every two heat-insulation plates; s5: extruding weather-resistant glue into the bottom of a gap between the heat-insulating plates, then placing polyurethane pipes with the outer diameter of 20mm into the gap along the direction of the gap, if the thickness of the heat-insulating plates is more than integral multiple of 20mm, filling corresponding integral multiple of polyurethane pipes into the gap, and then continuing to fill the gap with the weather-resistant glue until the weather-resistant glue layer and the heat-insulating plates are on the same plane; s6: the internal corners, the external corners and the door and window opening corners are reinforced by lapping glass fiber gridding cloth; s7: carrying out first-time plastering mortar construction, and pressing in glass fiber gridding cloth; s8: starting to install the anchoring piece 24 hours after the first-time construction of the plastering mortar is finished; s9: and (5) continuously constructing a finish coat.
Implement above-mentioned technical scheme, pack the polyurethane pipe in the gap between the heated board for the heated board is under the state of deformation, acts on the polyurethane pipe with the mutual extruded reaction force between the board, makes polyurethane pipe deformation cushion the reaction force on the polyurethane pipe, thereby reduces the reaction force between the board. And due to the good heat insulation performance of polyurethane, the polyurethane pipe can be filled, so that a cavity formed by a gap can be prevented from improving the heat conductivity coefficient and reducing the heat insulation performance of the heat insulation outer wall.
Furthermore, after the mortar leveling layer is coated and solidified, a 2m guiding rule is used for checking, the maximum deviation is not more than 5mm, a horizontal control line is popped up on the wall surface, a vertical reference steel wire is hung on the external corner of the wall body base layer, and a horizontal line is hung at the proper position of each floor.
Implement above-mentioned technical scheme to the straightness that hangs down and the roughness behind the follow-up heated board of puting up is posted in the control.
Furthermore, the heat insulation plates are pasted on the horizontal mortar leveling layer in a staggered mode, and the staggered joint is half of the plate length.
By implementing the technical scheme, the staggered joint splicing is firmer, the heat transfer between the plate bodies is quicker, the temperature of the outer wall of the heat-insulation plate is more uniform, and the local overheating or supercooling is relieved.
Furthermore, the heat insulation board is made of EPS polyphenyl boards.
By implementing the technical scheme, the EPS polystyrene board is used as a heat insulation board, is fully called a polystyrene foam board and is also called a foam board or an EPS board. It is a white solid with a fine closed pore structure, which is formed by heating expandable polystyrene beads containing a volatile liquid foaming agent in a mold after heating and pre-foaming. Has excellent heat insulating performance, high strength, high compression strength, excellent water resistance, high moisture resistance, high corrosion resistance and high durability.
Furthermore, the anchoring piece is made of high-strength and high-toughness nylon or plastic in a fastening mode, the tail of the anchoring piece is provided with a self-tapping expansion structure of a screw, the number of the anchoring pieces is 6 below 10 layers, 10-18 layers of the anchoring pieces is 8, 19-24 layers of the anchoring pieces are 10, and 12 anchoring pieces above 24 layers are arranged, and the tensile bearing capacity limit value of each anchoring piece is not less than 1.5 kN.
By implementing the technical scheme, the method is suitable for the construction of the outer wall heat-insulating layer with the outer wall facing being ceramic tiles, and is particularly suitable for the energy-saving reconstruction of the existing building enclosure structure with poor base surface adhesion.
Furthermore, after the insulation board is stuck and fixed, the insulation board is kept stand for 24 hours for polishing, the uneven parts of the board edges are polished by a special rubbing and trowelling device, the height difference of seams between boards is eliminated, and scattered chips are cleaned at any time during polishing.
Implement above-mentioned technical scheme to prevent that EPS board from removing.
Further, the first construction of plastering mortar is carried out, and the step of pressing in the glass fiber mesh cloth specifically comprises the following steps: uniformly coating the surface of the heat insulation plate with a trowel to form plastering mortar with an area slightly larger than that of one piece of glass fiber mesh cloth, pressing the glass fiber mesh cloth into the plastering mortar, immediately coating a second plastering mortar with the trowel when the mortar is slightly dry to touch, burying the glass fiber mesh cloth in the middle of the two plastering mortars, laying all the plastering mortar and the mesh cloth, standing and maintaining for 3 minutes, and carrying out construction of the next procedure.
By implementing the technical scheme, the glass fiber mesh fabric takes glass fiber woven fabric as a base material, and the coating is soaked by the macromolecular anti-emulsion. Therefore, the high-strength heat-insulating waterproof paint has good alkali resistance, flexibility and high tensile resistance in the warp and weft directions, and can be widely used for heat insulation, water resistance, fire resistance, crack resistance and the like of inner and outer walls of buildings.
Further, the method for constructing the veneer layer specifically comprises the following steps: and (3) blending batch wall putty with the exterior wall plastering surface putty, scraping the wall surface by using batch plates until the wall surface is smooth to form a smooth, bright and smooth and fine wall surface, uniformly brushing a sealing primer on the treated putty layer once until the putty layer is completely sealed and cannot be painted, standing for 24 hours, and uniformly brushing an exterior wall protective paint twice until the putty layer is completely covered and has consistent color.
In conclusion, the invention has the following beneficial effects:
fill the polyurethane pipe in the gap between the heated board for the heated board is under the state of deformation, with the interplate extruded reaction force act on the polyurethane pipe each other, makes polyurethane pipe deformation cushion the reaction force on the polyurethane pipe, thereby reduces the reaction force between the interplate. And due to the good heat insulation performance of polyurethane, the polyurethane pipe can be filled, so that a cavity formed by a gap can be prevented from improving the heat conductivity coefficient and reducing the heat insulation performance of the heat insulation outer wall.
Drawings
FIG. 1 is a block flow diagram of the method of the present invention;
FIG. 2 is a schematic structural view between the insulation board and the polyurethane tube of the present invention.
Detailed Description
The technical solutions of the embodiments of the present invention will be described below with reference to the accompanying drawings.
As shown in fig. 1, the invention provides a construction method of a heat-insulating outer wall of a building, which comprises the following steps:
s1: and coating a mortar leveling layer on the surface of the wall base layer.
In the embodiment of the invention, the original wall whitewash layer is checked, the hollowing part is removed completely, and the gypsum leveling layer is removed completely. Wetting: the wall surface is sprayed with water one day in advance and is sprayed with water once again on the same construction day. Napping: mixing cement and sand with 108 cement, roughening the wall surface and curing for 48 hr. Layering and leveling, namely, according to the cement: sand = 1: 2, blending mortar is proportioned and leveled layer by layer, the plastering thickness of cement mortar every time is 5-8 mm, when the total plastering thickness is estimated to exceed 30mm, a steel wire mesh is hung firstly, and the surface is leveled when the last plastering is finished. After the mortar leveling layer is coated and solidified, a 2m guiding rule is used for checking, the maximum deviation is not more than 5mm, a horizontal control line is popped up on the wall surface, a vertical reference steel wire is hung on the external corner of the wall body base layer, and a horizontal line is hung at the proper position of each floor. So as to control the verticality and the flatness of the heat-insulation plate.
S2: and fixing the bracket at the bottom of the installation position of the insulation board by using an expansion bolt at the bottom of the mortar leveling layer.
In the embodiment of the invention, the bracket is used for supporting the heat-insulation plate at the bottom, so that the heat-insulation plate is prevented from falling off.
S3: coating a strip of adhesive cement with the average width of 50mm and the thickness of 5mm-10mm on the periphery of the heat insulation plate, and performing point bonding on 5-10 adhesive cements with the diameters of 80mm-100mm and the thicknesses in the heat insulation plate, wherein the ratio of the adhesive cement to the bonding area of the heat insulation plate is not less than 50%.
In the embodiment of the invention, the adhesive cement is prepared, and the weight ratio of water to the polymer anti-crack dry powder mortar is 1: 4.
s4: and transversely pasting the heat insulation plates on the mortar leveling layer from bottom to top along the horizontal direction from the upper end surface of the bracket, and reserving a gap of 20mm between every two heat insulation plates.
S5: and (3) extruding weather-resistant glue into the bottom of the gap between the heat-insulating plates, then placing polyurethane pipes with the outer diameter of 20mm into the gap along the direction of the gap, if the thickness of the heat-insulating plate is more than integral multiple of 20mm, filling corresponding integral multiple of polyurethane pipes into the gap, and then continuing to fill the gap with the weather-resistant glue until the weather-resistant glue layer and the heat-insulating plate are on the same plane.
In the embodiment of the present invention, as shown in fig. 2, a schematic structural diagram between the insulation board and the polyurethane tube is shown. Fill the polyurethane pipe in the gap between the heated board for the heated board is under the state of deformation, with the interplate extruded reaction force act on the polyurethane pipe each other, makes polyurethane pipe deformation cushion the reaction force on the polyurethane pipe, thereby reduces the reaction force between the interplate. And due to the good heat insulation performance of polyurethane, the polyurethane pipe can be filled, so that a cavity formed by a gap can be prevented from improving the heat conductivity coefficient and reducing the heat insulation performance of the heat insulation outer wall. And if the thickness of the heat insulation plate is 40mm, two polyurethane pipes are superposed in the gap in the thickness direction of the heat insulation plate, so that the polyurethane pipes cover the side surface of the heat insulation plate. The heat-insulating board can be selected from a fluorocarbon composite energy-saving decorative board, an inorganic composite energy-saving decorative board, a stone composite energy-saving decorative board, an inorganic composite energy-saving decorative board and the like. It is a white solid with a fine closed pore structure, which is formed by heating expandable polystyrene beads containing a volatile liquid foaming agent in a mold after heating and pre-foaming. Has excellent heat insulating performance, high strength, high compression strength, excellent water resistance, high moisture resistance, high corrosion resistance and high durability. The heat insulation boards are pasted on the horizontal mortar leveling layer in a staggered manner, and the staggered joint is half of the board length. Standing for 24 hours after the insulation board is stuck and fixed for polishing, polishing uneven parts of board edges by using a special rubbing trowel, eliminating height difference of seams between boards, and cleaning scattered chips at any time during polishing to prevent the EPS board from moving.
S6: the internal corner, the external corner and all parts of the door and window opening are reinforced by lapping glass fiber gridding cloth.
S7: and (3) performing first-time plastering mortar construction, and pressing in the glass fiber gridding cloth.
In the embodiment of the invention, the first time of plastering mortar construction, and the step of pressing the glass fiber mesh cloth specifically comprises the following steps: uniformly coating the surface of the heat insulation plate with a trowel to form plastering mortar with an area slightly larger than that of one piece of glass fiber mesh cloth, pressing the glass fiber mesh cloth into the plastering mortar, immediately coating a second plastering mortar with the trowel when the mortar is slightly dry to touch, burying the glass fiber mesh cloth in the middle of the two plastering mortars, laying all the plastering mortar and the mesh cloth, standing and maintaining for 3 minutes, and carrying out construction of the next procedure.
S8: and (5) starting to install the anchoring piece 24 hours after the first-time plastering mortar construction is finished.
In the embodiment of the invention, the anchoring piece is made of high-strength and high-toughness nylon or plastic by tightening, the tail part of the anchoring piece is provided with a self-tapping expansion structure of a screw, the number of the anchoring pieces is 6 below 10 layers, 10-18 layers of 8, 19-24 layers of 10, and more than 24 layers of 12, and the limit value of the tensile bearing capacity of a single anchoring piece is not less than 1.5 kN. The method is suitable for the construction of the outer wall heat-insulating layer with the outer wall facing made of ceramic tiles, and is particularly suitable for the energy-saving reconstruction of the existing building envelope structure with poor base surface adhesion. The method for installing the anchoring piece comprises the steps of drilling a hole into a wall body from the surface of the heat insulation plate by using a percussion drill, and pressing the anchoring piece into the drilled hole.
S9: and (5) continuously constructing a finish coat.
In the embodiment of the invention, the method for constructing the veneer layer specifically comprises the following steps: and (3) blending batch wall putty with the exterior wall plastering surface putty, scraping the wall surface by using batch plates until the wall surface is smooth to form a smooth, bright and smooth and fine wall surface, uniformly brushing a sealing primer on the treated putty layer once until the putty layer is completely sealed and cannot be painted, standing for 24 hours, and uniformly brushing an exterior wall protective paint twice until the putty layer is completely covered and has consistent color.
The working principle of the invention is as follows: fill the polyurethane pipe in the gap between the heated board for the heated board is under the state of deformation, with the interplate extruded reaction force act on the polyurethane pipe each other, makes polyurethane pipe deformation cushion the reaction force on the polyurethane pipe, thereby reduces the reaction force between the interplate. And due to the good heat insulation performance of polyurethane, the polyurethane pipe can be filled, so that a cavity formed by a gap can be prevented from improving the heat conductivity coefficient and reducing the heat insulation performance of the heat insulation outer wall.
Claims (8)
1. A construction method of a heat-insulation outer wall of a building is characterized by comprising the following steps:
s1: coating a mortar leveling layer on the surface of the wall base layer;
s2: fixing the bracket at the bottom of the installation position of the insulation board by using an expansion bolt at the bottom of the mortar leveling layer;
s3: coating a strip of adhesive cement with the average width of 50mm and the thickness of 5mm-10mm on the periphery of the heat insulation plate, and performing point bonding on 5-10 adhesive cements with the diameters of 80mm-100mm and the thicknesses in the heat insulation plate, wherein the ratio of the adhesive cement to the bonding area of the heat insulation plate is not less than 50%;
s4: transversely sticking the heat-insulation plates on the mortar leveling layer from bottom to top along the horizontal direction from the upper end surface of the bracket, and reserving a gap of 20mm between every two heat-insulation plates;
s5: extruding weather-resistant glue into the bottom of a gap between the heat-insulating plates, then placing polyurethane pipes with the outer diameter of 20mm into the gap along the direction of the gap, if the thickness of the heat-insulating plates is more than integral multiple of 20mm, filling corresponding integral multiple of polyurethane pipes into the gap, and then continuing to fill the gap with the weather-resistant glue until the weather-resistant glue layer and the heat-insulating plates are on the same plane;
s6: the internal corners, the external corners and the door and window opening corners are reinforced by lapping glass fiber gridding cloth;
s7: carrying out first-time plastering mortar construction, and pressing in glass fiber gridding cloth;
s8: starting to install the anchoring piece 24 hours after the first-time construction of the plastering mortar is finished;
s9: and (5) continuously constructing a finish coat.
2. The construction method of the heat-insulating outer wall of the building as claimed in claim 1, wherein after the mortar leveling layer is coated and solidified, a 2m guiding rule is used for checking that the maximum deviation is not more than 5mm, a horizontal control line is popped on the wall surface, a vertical reference steel wire is hung on the external corner of the wall body base layer, and a horizontal line is hung at a proper position of each floor.
3. The construction method of the heat-insulating outer wall of the building as claimed in claim 1, wherein the heat-insulating plate is stuck on the horizontal mortar leveling layer in a staggered manner, and the staggered joint is half a plate length.
4. The construction method of the heat-insulating outer wall of the building as claimed in claim 1, wherein the heat-insulating board is EPS polystyrene board.
5. The construction method of the heat-insulating outer wall of the building as claimed in claim 1, wherein the anchoring member is made of high-strength and high-toughness nylon or plastic, the tail part of the anchoring member is provided with a self-tapping expansion structure with screws, the number of the anchoring members is 6 below 10 layers per square meter, 10 to 18 layers of the anchoring members is 8, 19 to 24 layers of the anchoring members is 10, and 12 above 24 layers of the anchoring members are used, and the limit value of the tensile bearing capacity of each anchoring member is not less than 1.5 kN.
6. The construction method of the building thermal insulation outer wall according to claim 1, characterized in that the thermal insulation plate is ground after being stuck and fixed for 24 hours, the uneven part of the plate edge is ground by a special rubbing trowel for grinding, the height difference of the joint between the plates is eliminated, and the scattered debris is cleaned at any time during grinding.
7. The construction method of the thermal insulation outer wall of the building according to claim 1, wherein the first plastering mortar construction is carried out, and the step of pressing the glass fiber mesh cloth comprises the following specific steps: uniformly coating the surface of the heat insulation plate with a trowel to form plastering mortar with an area slightly larger than that of one piece of glass fiber mesh cloth, pressing the glass fiber mesh cloth into the plastering mortar, immediately coating a second plastering mortar with the trowel when the mortar is slightly dry to touch, burying the glass fiber mesh cloth in the middle of the two plastering mortars, laying all the plastering mortar and the mesh cloth, standing and maintaining for 3 minutes, and carrying out construction of the next procedure.
8. The construction method of the heat-insulating outer wall of the building as claimed in claim 1, wherein the method for constructing the finish coat is specifically as follows: and (3) blending batch wall putty with the exterior wall plastering surface putty, scraping the wall surface by using batch plates until the wall surface is smooth to form a smooth, bright and smooth and fine wall surface, uniformly brushing a sealing primer on the treated putty layer once until the putty layer is completely sealed and cannot be painted, standing for 24 hours, and uniformly brushing an exterior wall protective paint twice until the putty layer is completely covered and has consistent color.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN112392162A (en) * | 2020-12-08 | 2021-02-23 | 安徽泰莱保温科技有限公司 | Method for insulating external wall |
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