CN112392160A - Fireproof heat-insulation system for outer wall and construction method thereof - Google Patents
Fireproof heat-insulation system for outer wall and construction method thereof Download PDFInfo
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- CN112392160A CN112392160A CN202011226559.8A CN202011226559A CN112392160A CN 112392160 A CN112392160 A CN 112392160A CN 202011226559 A CN202011226559 A CN 202011226559A CN 112392160 A CN112392160 A CN 112392160A
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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
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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
- E04B1/762—Exterior insulation of exterior walls
- E04B1/7625—Details of the adhesive connection of the insulation to the wall
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- E—FIXED CONSTRUCTIONS
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- 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
- E04B1/7629—Details of the mechanical connection of the insulation to the wall
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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
- E04B1/82—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 sound only
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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
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/94—Protection against other undesired influences or dangers against fire
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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
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
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- Electromagnetism (AREA)
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Abstract
The application relates to the technical field of external wall insulation, in particular to an external wall fireproof insulation system and a construction method thereof, wherein the external wall fireproof insulation system comprises: the fireproof heat-preservation leveling layer, the fireproof heat-preservation layer, the plastering layer, the decorative layer and the plurality of heat-preservation plates; the heat insulation boards can be bonded to the outer surface of the base wall through the bonding layers, and fireproof heat insulation materials are filled between any two adjacent heat insulation boards; one side of a plurality of heated boards that keep away from basic unit's wall body covers in order has common fire prevention heat preservation screed-coat, fire prevention heat preservation, plastering layer and decorative layer. It is thus clear that fill fire prevention heat preservation material between the heated board, the surface of heated board covers fire prevention heat preservation screed-coat and fire prevention heat preservation, not only plays heat preservation, thermal-insulated effect, can also play the effect of fire prevention, helps guaranteeing resident family's personal safety, and the practicality is stronger, accords with actual need more.
Description
Technical Field
The application relates to the technical field of external wall heat insulation, in particular to an external wall fireproof heat insulation system and a construction method thereof.
Background
At present, the external wall insulation is compounded by polymer mortar, glass fiber mesh cloth, flame-retardant molded graphite polystyrene foam board (EPS) or extruded sheet (XPS) and other materials, and the insulation effect is emphasized in the external wall insulation technology, so that the research on the fireproof performance is less. For how to realize heat preservation and fire prevention in consideration of the outer wall, an improved space exists in the technical field of the outer wall.
Disclosure of Invention
The application aims to provide an external wall fireproof heat insulation system and a construction method thereof, and solves the technical problems that in the prior art, the heat insulation effect is important in the external wall heat insulation technology and the fireproof performance is less to be researched to a certain extent.
The application provides an outer wall fire prevention heat preservation system for install the outside at basic unit's wall body, outer wall fire prevention heat preservation system includes: the fireproof heat-preservation leveling layer, the fireproof heat-preservation layer, the plastering layer, the decorative layer and the plurality of heat-preservation plates;
the heat insulation boards can be bonded to the outer surface of the base layer wall through bonding layers, and fireproof heat insulation materials are filled between any two adjacent heat insulation boards;
and one side of the heat-insulation boards, which is far away from the base layer wall body, is sequentially covered with the common fireproof heat-insulation leveling layer, the fireproof heat-insulation layer, the plastering layer and the decorative layer.
In the technical scheme, the fireproof heat-insulating material and the fireproof heat-insulating layer are made of the same material and are compounded by a rubber powder material prepared by mixing redispersed rubber powder, an inorganic cementing material and an additive, and vitrified micro bubbles and polyphenyl particles serving as aggregates.
In any of the above technical solutions, further, the insulating layer can be connected to the base layer wall by fastening components; the fastening assembly comprises an expansion sleeve and a screw, the expansion sleeve comprises a disc-shaped mounting groove part and a connecting pipe part which are connected, one end of the screw is inserted into the connecting pipe part, and the other end, opposite to the screw, of the screw is in threaded connection with the base wall.
In any of the above technical solutions, further, the expansion sleeve is a plastic expansion sleeve, and the screw is a stainless steel screw.
In any of the above technical solutions, further, the insulation board is a molded graphite polyphenyl insulation board.
In any of the above technical solutions, further, the plastering layer is composed of a first layer of plastering anti-crack mortar, an alkali-resistant glass fiber web, and a second layer of plastering anti-crack mortar, and both the first layer of plastering anti-crack mortar and the second layer of plastering anti-crack mortar are composed of a cement-based cementitious material, a high molecular polymer material, sand, and an additive.
In any of the above technical solutions, further, the bonding layer is formed by dry-curing bonding mortar, and the bonding mortar is composed of a cement-based cementing material, a high molecular polymer material, sand, and an additive.
In any one of the above technical solutions, further, a plurality of the insulation boards are enclosed to form a square structure, and an L-shaped supporting member is disposed at a vertex angle of the square structure close to the ground, and the supporting member can be fixedly connected to the base wall through a fastener.
The application also provides a construction method of the fireproof heat-insulation system for the outer wall, which comprises the following steps:
treating a basic wall: treating the base wall before construction to ensure that the outer surface of the base wall is smooth, clean and dry;
construction of a heat insulation layer: hanging a vertical line and a control line in a springing manner on the outer surface of the base wall, and marking the installation position of the insulation board; coating adhesive mortar on the inner surface of the heat insulation plate, adhering the heat insulation plate at the installation position of the heat insulation plate determined by the vertical line and the control line, and filling the gaps between the two adjacent heat insulation plates with fireproof heat insulation slurry;
fixing the heat insulation board on the base layer wall, and then coating a fireproof heat insulation slurry leveling layer on one side of the heat insulation board, which is far away from the base layer wall;
construction of a fireproof heat-insulating layer: constructing a plurality of thickness control ash cakes on the surface of the fireproof heat-insulating slurry leveling layer, wherein the thickness control ash cakes and the fireproof heat-insulating layer are made of the same material;
coating a fireproof heat-insulating layer on the surface of the fireproof heat-insulating slurry leveling layer until the surface of the fireproof heat-insulating layer is flush with the surface of the thickness control ash cake;
paving a plastering layer on the fireproof heat-insulating layer;
and after the rendering coat is dried, paving a finishing coat on the rendering coat.
In the above technical solution, further, the construction of the fireproof insulation layer includes the following steps:
constructing thickness control ash cakes on the surface of the fireproof heat-insulation slurry leveling layer at intervals in sequence along the direction of a vertical control line, pulling a transverse line between a plurality of ash cakes at the same horizontal position after the construction of at least two rows of thickness control ash cakes in the vertical direction is finished, and supplementing other thickness control ash cakes at intervals in sequence in the horizontal direction according to the preset intervals according to the transverse line, wherein the thickness control ash cakes are made of the same material as the fireproof heat-insulation layer;
and coating the fireproof heat-insulating layer on the surface of the fireproof heat-insulating slurry leveling layer until the surface of the fireproof heat-insulating layer is flush with the surface of the thickness control ash cake.
In any of the above technical solutions, further, in the construction of the rendering coat, after the construction of the fireproof heat-insulating layer is completed, an alkali-resistant glass fiber web is laid on the fireproof heat-insulating layer, and the alkali-resistant glass fiber web is bonded with the fireproof heat-insulating layer through adhesive cement; coating anti-crack mortar on the surface of the alkali-resistant glass fiber web;
in the construction of the veneer layer, after the finishing layer is dried, a flexible waterproof putty layer is coated, and after the flexible waterproof putty is dried and solidified, the construction of the surface layer coating is carried out.
In any of the above technical solutions, further, the construction of the rendering coat includes the following steps:
after the construction of the fireproof heat-insulating layer is completed, a first layer of plastering anti-cracking mortar is smeared on the surface of the fireproof heat-insulating layer, after standing for a preset time, the alkali-resistant glass fiber mesh cloth is pressed into the first layer of plastering anti-cracking mortar, a second layer of plastering anti-cracking mortar is smeared on the outer surface of the alkali-resistant glass fiber mesh cloth, and after the first layer of plastering anti-cracking mortar and the second layer of plastering anti-cracking mortar are solidified, the anti-cracking mortar is coated.
In any of the above technical solutions, further, the processing of the base layer wall includes the following steps:
removing bulges, hollows and cracking parts with the wall surface being larger than 10mm, and leveling the bulges, hollows and cracking parts by adopting polymer mortar;
cleaning wall through holes and wall defects, and then leveling the wall through holes and the wall defects by using polymer mortar;
watering and wetting the hole parts of the wall surface, and adopting polymer mortar to completely fill and build the hole parts tightly;
and coating an interface agent on the surface of the treated base layer wall.
Compared with the prior art, the beneficial effect of this application is:
in the outer wall fire prevention heat preservation system that this application provided, fill fire prevention heat preservation material between the heated board, the surface of heated board covers fire prevention heat preservation screed-coat and fire prevention heat preservation, not only plays heat preservation, thermal-insulated effect, can also play the effect of fire prevention, helps guaranteeing the personal safety of resident family, and the practicality is stronger, accords with actual need more. In addition, after the fireproof heat preservation material is filled between the adjacent heat preservation plates, the surface of the fireproof heat preservation material coated heat preservation plate is utilized to form a fireproof heat preservation leveling layer, so that the leveling effect can be achieved, the flatness of the later-stage coated fireproof heat preservation layer is guaranteed, and the fireproof heat preservation leveling layer can achieve the fireproof heat preservation effect.
The application provides a construction method of outer wall fire prevention heat preservation system, more standardization, rationalization, maneuverability is stronger, has the guide effect to concrete construction, has avoided constructor to set up the construction step at will among the prior art, leads to the outer wall fire prevention heat preservation system's of last component problem that the heat preservation effect is poor, the fire behavior is poor and the appearance is not pleasing to the eye.
Drawings
In order to more clearly illustrate the detailed description of the present application or the technical solutions in the prior art, the drawings needed to be used in the detailed description of the present application or the prior art description will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic partial structure view of an external wall fireproof heat insulation system provided in an embodiment of the present application.
Reference numerals:
1-a base wall, 2-a bonding layer, 3-a heat-insulation board, 4-a fireproof heat-insulation material, 5-a fireproof heat-insulation leveling layer, 6-a fireproof heat-insulation layer, 7-a plastering layer, 8-a decorative layer, 9-a fastening component, 91-an expansion sleeve, 911-an installation groove part, 912-a connecting pipe part and 92-a screw.
Detailed Description
The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments.
The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application.
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Referring to fig. 1, an exterior wall fireproof insulation system and a construction method thereof according to some embodiments of the present application will be described.
Example one
Referring to fig. 1, an embodiment of the present application provides an external wall fireproof insulation system for being installed outside a base layer wall 1, and the external wall fireproof insulation system includes: the fireproof heat-preservation leveling layer 5, the plastering layer 7, the decorative layer 8 and the plurality of heat-preservation plates 3;
the heat insulation boards 3 can be bonded to the outer surface of the base layer wall body 1 through the bonding layers 2, and fireproof heat insulation materials 4 are filled between any two adjacent heat insulation boards 3;
one side of a plurality of heated boards 3, far away from basic unit's wall body 1, covers in order has common fire prevention heat preservation screed-coat 5, fire prevention heat preservation 6, plastering layer 7 and decorative layer 8.
It is obvious that fill fire prevention heat preservation material 4 between the heated board 3, the surface of heated board 3 covers fire prevention heat preservation screed-coat 5 and fire prevention heat preservation 6, not only plays heat preservation, thermal-insulated effect, can also play the effect of fire prevention, helps guaranteeing the personal safety of resident family, and the practicality is stronger, accords with actual need more.
In addition, fill between the adjacent heated board 3 behind the fire prevention heat preservation material 4, still utilize the surface of 4 coating heated board 3 of fire prevention heat preservation material in order to form fire prevention heat preservation screed-coat 5, can play the effect of making level promptly, guarantee the roughness of later stage coating fire prevention heat preservation 6, fire prevention heat preservation screed-coat 5 can play the heat retaining effect of fire prevention moreover, fire prevention heat preservation screed-coat 5's material can be the same with fire prevention heat preservation 6, also can be different with fire prevention heat preservation 6, select according to actual need.
The fireproof heat-insulating layer 4 and the fireproof heat-insulating layer 6 are preferably made of the same material, and are both compounded by a rubber powder material prepared by mixing redispersed rubber powder, an inorganic cementing material and an additive (the additive is hydroxymethyl cellulose, propylene fiber and starch), and vitrified micro bubbles and polyphenyl particles serving as aggregates, and specifically, the performances of the fireproof heat-insulating slurry are shown in the following table.
Table-fire-proof thermal insulation slurry performance index
As can be seen from the data in the table I, the fireproof heat-preservation slurry has the characteristics of water resistance, heat preservation, good flame retardance, small heat conductivity coefficient and incombustibility, and can play the roles of fire prevention, heat insulation and heat preservation.
The adhesive layer 2 is formed by dry-curing adhesive mortar, the adhesive mortar is composed of a cement-based cementing material, a high polymer material, sand and an additive (the additive is hydroxymethyl cellulose, propylene fiber and starch), and the adhesive mortar is used for bonding the polymer cement mortar between the base layer wall 1 and the insulation board 3.
Performance index of surface-two adhesive mortar
The data in table two show that the bonding mortar has good bonding property, water resistance and high strength.
Preferably, the rendering coat layer 7 is composed of a first layer of rendering coat anti-cracking mortar, an alkali-resistant glass fiber net and a second layer of rendering coat anti-cracking mortar, so that the rendering coat layer 7 can be anti-cracking and impact-resistant, the insulation board 3 and the fireproof insulation layer 6 are effectively protected, and the service life of the external wall fireproof insulation system is prolonged.
The first layer of plastering anti-cracking mortar and the second layer of plastering anti-cracking mortar are both composed of cement-based cementing materials, high-molecular polymer materials, sand and additives (the additives are hydroxymethyl cellulose, propylene fibers and starch riddle), have certain deformability and good bonding property, and are combined with the glass fiber net to form the polymer cement mortar of the plastering layer 7. Specifically, the performance indexes of the first layer of plastering anti-cracking mortar and the second layer of plastering anti-cracking mortar can be seen in the following table three.
Index of cracking resistance of cement
The data in the third table show that the first layer of plastering anti-cracking mortar and the second layer of plastering anti-cracking mortar have good cohesiveness, water resistance and high strength.
Preferably, the surface of the alkali-resistant glass fiber web is coated with a polymer material, and the latticed glass fiber fabric with the alkali-resistant function is used as a reinforcing material and is embedded in the finishing mortar to improve the crack resistance and the impact resistance of the finishing layer 7. Specifically, the performance index of the alkali-resistant glass fiber web can be seen in table four below.
TABLE IV alkali-resistant glass fiber web performance index
| Item | Unit of | Performance index |
| Mass per unit area | g/m2 | ≥160 |
| Alkali-resistant tensile breaking strength (warp and weft) | N/50mm | ≥1000 |
| Alkali-resistant tensile rupture strength retention (warp and weft) | ％ | ≥50 |
| Elongation at break | ％ | ≤5.0 |
The data in the table four show that the alkali-resistant glass fiber web has high breaking strength and low breaking elongation, so that the final product is not easy to deform.
Preferably, the insulation board 3 is a molded graphite polyphenyl insulation board, and specifically, the performance index of the insulation board 3 can be referred to the following table five.
TABLE FIVE THERMAL INSULATION PLATE 3 PERFORMANCE INDICATIES
The data in the table five show that the heat-insulating plate 3 has the characteristics of high density, good heat-insulating property, good flame retardance, high temperature resistance, small heat conductivity coefficient and incombustibility, thereby playing the roles of heat insulation and heat preservation.
In this embodiment, preferably, as shown in fig. 1, the insulation is attached to the substrate wall 1 by fastening assemblies 9;
the fastening assembly 9 includes an expansion sleeve 91 and a screw 92, the expansion sleeve 91 includes a disc-shaped mounting groove portion 911 and a connecting pipe portion 912 connected with each other, one end of the screw 92 is inserted into the connecting pipe portion 912, and the opposite end of the screw 92 is used for being screwed to the substrate wall 1.
The heat insulating plate 3 is provided with a fastening member 9 such as an anchor bolt, and the heat insulating plate 3 is drilled with a hammer drill to have a hole diameter of 8mm, and the expansion sleeve 91 is first driven into the drilled hole, and then the metal screw 92 is driven into the connecting tube 912, and the screw cap is made to be flush with or slightly recessed from the end of the disk-shaped mounting groove portion 911. The crab-bolt is arranged according to the plum blossom form, and effective anchor degree of depth should not be less than 35mm in concrete wall, should not be less than 55mm in the brickwork wall, and the quantity per square meter of crab-bolt is no less than 7.
Wherein, the expansion sleeve 91 is preferably a plastic expansion sleeve, which has good elasticity, large tension, impact resistance, no fracture, strong hardness, no rustiness and large elasticity;
the screw 92 is a stainless steel screw, so that the screw is not easy to rust and has long service life.
In this embodiment, preferably, the plurality of insulation boards 3 are enclosed to form a square structure, and an L-shaped supporting member is disposed at a vertex angle of the square structure close to the ground, and the supporting member can be fixedly connected to the basement wall 1 by a fastener.
When constructing this outer wall fire prevention heat preservation system to building big wall, play support, reinforced (rfd) effect to whole heated board 3 is whole through setting up the bearing member.
Wherein, optionally, the supporting component can be angle steel with corrosion resistance, and the fastening piece is composed of an expansion bolt and a nut.
Example two
The embodiment of the application also provides a construction method of the external wall fireproof heat-insulation system, which comprises the following steps:
treating a basic wall: treating the base wall before construction to ensure that the outer surface of the base wall is smooth, clean and dry;
construction of a heat insulation layer: hanging a vertical line and a control line in an elastic mode on the outer surface of the base layer wall, marking the installation position of the insulation board, and determining the position of the staggered joint of the insulation board; coating adhesive mortar on the inner surface of the heat insulation plate, adhering the heat insulation plate at the installation position of the heat insulation plate determined by the vertical line and the control line, and then embedding the gaps between the two adjacent heat insulation plates with fireproof heat insulation mortar;
fixing the insulation board on the base layer wall (specifically, installing a fastening component on the insulation board, and fixing the insulation board on the base layer wall by the fastening component), and then coating a fireproof insulation slurry leveling layer on one side of the insulation board, which is far away from the base layer wall;
construction of a fireproof heat-insulating layer: constructing a plurality of thickness control ash cakes on the surface of the fireproof heat-insulating slurry leveling layer, wherein the thickness control ash cakes and the fireproof heat-insulating layer can be selected to be made of the same material, and certainly, the method is not limited to the method;
coating a fireproof heat-insulating layer on the surface of the fireproof heat-insulating slurry leveling layer until the surface of the fireproof heat-insulating layer is flush with the surface of the thickness control ash cake;
lay the rendering coat on the fire prevention heat preservation, to rendering coat work progress as follows: after the fireproof heat-insulating layer is constructed, laying an alkali-resistant glass fiber net on the fireproof heat-insulating layer, and bonding the alkali-resistant glass fiber net with the fireproof heat-insulating layer through adhesive cement; coating anti-crack mortar on the surface of the alkali-resistant glass fiber web;
after the rendering coat is dry, lay the finish coat at the rendering coat, to finish coat work progress as follows: and after the finishing layer is dried, coating a flexible waterproof putty layer, and after the flexible waterproof putty is dried and solidified, constructing a finishing coating.
According to the above description, use above-mentioned detailed construction procedure and can construct outer wall fire prevention heat preservation system at basic unit's wall body, fill fire prevention heat preservation material between the heated board, the surface of heated board covers fire prevention heat preservation screed-coat and fire prevention heat preservation, not only play heat preservation, thermal-insulated effect, can also play the effect of fire prevention, help guaranteeing the personal safety of resident family, the practicality is stronger, accord with actual need more, furthermore, pack between the adjacent heated board behind the fire prevention heat preservation material, still utilize fire prevention heat preservation material coating heated board's surface in order to form fire prevention heat preservation screed-coat, can play the effect of making level promptly, guarantee the roughness of later stage coating fire prevention heat preservation, make the appearance more pleasing to the eye, fire prevention heat preservation screed-coat can play the heat retaining effect of fire prevention.
The construction steps are more standardized and rationalized, the construction of field construction personnel is guided, and the problems that in the prior art, the construction steps are randomly set by the construction personnel, the heat insulation effect of an outer wall fireproof heat insulation system of a final component is poor, the fireproof performance is poor and the appearance is not attractive are solved. In addition, the construction method of the fireproof heat-insulation system of the outer wall also comprises the following post-repair construction, and the specific construction method comprises the following steps:
cutting and forming the same graphite extruded sheet according to the size, shape and thickness of the damaged part;
cutting off the heat-insulating layer within the damage range to expose the surface of a clean base layer wall body with the same size as the surface of the cut, and grinding off the surface layer within a wide range of 80MM outside the periphery of the cut until the original glass fiber net is exposed;
and sticking and repairing the graphite extruded sheet and the glass fiber net after the anti-corrosion and anti-pollution adhesive tape is stuck and covered outside the repairing range.
After the repair surface is leveled, the surface layer coating which can be refreshed only through 24H maintenance has the texture and the color consistent with the original wall surface.
The construction steps in the construction method of the fireproof heat-insulation system for the outer wall are explained in detail below.
In addition, in the step of treating the base wall, the base wall is treated before the heat-insulating layer is constructed, so that the surface of the base wall is smooth, clean and dry, and the quality problems of floating dust, slurry leakage, oil stain, hollowing and the like are avoided. The method specifically comprises the following processing modes:
when the surface bulge of the wall body is larger than 10mm, the bulge is removed, the hollowing and cracking parts on the surface of the external wall of the building are also removed, and the bulge is leveled by adopting polymer mortar;
cleaning wall through holes and wall defects, and then leveling the wall through holes and the wall defects by using polymer mortar; watering and wetting the hole parts of the wall surface, and adopting polymer mortar to completely fill and build the hole parts tightly;
after the operation is finished, uniformly and fully coating a thin layer of special interface agent on the surface of the treated base wall; the masonry wall with high water absorption rate is firstly wetted by the wall surface, and after being dried in the shade, the special interface agent can be sprayed and brushed according to requirements.
The construction method for the heat insulation layer comprises the following steps:
1. before the construction of the heat insulation layer, a vertical line is hung on the wall surface, a control line is popped out, a control point is determined, the installation position of the staggered joint of the heat insulation plate is marked, and the vertical line is fixed.
2. Preparing the bonding mortar according to the specification of a product use instruction: plastering mortar and composite heat-insulating mortar, and the heat-insulating board can be adhered after the interface agent of the base wall is dried.
3. The method comprises the steps of smearing bonding mortar with a certain thickness on the inner pasting surface of the heat-insulation board, pasting the heat-insulation board in a point-pasting mode, pasting the heat-insulation board according to the staggered joint installation position determined by a vertical line and a control line, specifically, paving and pasting the heat-insulation board from bottom to top, and staggering 1/2 board lengths line by line along the adjacent vertical joint of the vertical direction, wherein the reserved board joint is not less than 10mm, the heat-insulation board is fully embedded with fireproof heat-insulation slurry, full fireproof heat-insulation slurry is filled in the gaps for fully separating the gaps, 60% of slurry is embedded into the board joint before the next heat-insulation board is pasted, then 40% of slurry is continuously smeared on the surface of the slurry layer, the filling effect is ensured, the fireproof effect can be fully blocked, and the effective pasting area of the heat-insulation board and the base layer wall body is not.
4. After the insulation board is adhered and solidified for 24h, a fastening component such as an anchor bolt is installed on the insulation board, a percussion drill is used for drilling a hole in the adhered insulation board, the hole diameter of the drilled hole is required to be 8mm, an expansion sleeve is firstly nailed into the drilled hole, then a metal screw is nailed into a connecting pipe, and a screw cap is flush with the end part of the disc-shaped installation groove part or slightly recessed. The crab-bolt is arranged according to the plum blossom form, and effective anchor degree of depth should not be less than 35mm in concrete wall, should not be less than 55mm in the brickwork wall, and the quantity per square meter of crab-bolt is no less than 7.
5. And coating heat-insulating fireproof slurry outside the heat-insulating plate to form a fireproof heat-insulating leveling layer, wherein the thickness is controlled to be not less than 20 mm.
6. After the construction of the composite heat-insulating slurry of the fireproof heat-insulating leveling layer is finished, the next procedure of construction can be carried out.
The steps for the construction of the fireproof heat-insulating layer are described as follows:
1. according to the height of the floor, fixing points are arranged at intervals of 2 layers to fix the vertical lines, and after the vertical lines are fixed, the verticality of the vertical lines is rechecked by using a theodolite. The vertical through line is hung on the two sides of each corner and the ends of the two sides of the window opening respectively, and the distance between the vertical line and the wall body is the sum of the total thickness of the heat-insulating layer and I.5mm-2.0 mm. The vertical control line should be adjusted and corrected in time during use. The components of the door and window, the balcony, the exposed column, the waist line and the like which are concave-convex out of the wall surface are required to be horizontal and vertical, and the control line can be popped out on the wall in advance by using the ink line according to the design thickness of the heat insulation layer. And the drainage gradient is reserved when the platform is constructed.
2. Determining the position of the thickness control ash cake: and constructing a thickness control ash cake every 2m along the direction of the vertical control line, wherein the thickness of the thickness control ash cake is determined according to the thickness of the heat insulation layer. And (3) drawing transverse through lines between the thickness control ash cakes at the same horizontal position, and performing supplementary construction on the thickness control ash cakes in the horizontal direction at intervals of 2 m.
Inspecting the ash cakes after the construction is finished, and controlling the thickness of the ash cakes to be 20 mm; the thickness control ash cake adopts fireproof heat-insulating slurry blocks, and cement mortar is not used as the ash cake and the reinforcement so as not to form a heat bridge.
3. The outer layer heat-insulating board or the plastering surface of the heat-insulating board is treated by adopting a special interface agent and then can be plastered with composite heat-insulating slurry.
4. The fireproof heat-preservation slurry is stirred according to the use instruction of the product and the regulation of the specification, the stirring quality can be judged by measuring the wet apparent density and observing the operability, the anti-sliding performance, the paste state and the like of the wet apparent density, and the stirred fireproof heat-preservation slurry is used up within the allowable time of the product.
5. The fireproof heat-insulating slurry should be plastered layer by layer, the thickness of each layer of plastering is preferably about 20mm, and the interval time is more than 12 h. The first plastering should be compacted, the final plastering thickness should be controlled at about 10mm, and the plaster should be plastered to be level with the thickness control plaster cake or the screeds and rubbed with a large bar. And (4) after finishing plastering for the last time for 2-3 h, repairing the heat-insulating layer, and checking the flatness of the heat-insulating layer by using a bar ruler before repairing, wherein the deviation is controlled to be +/-2 mm.
And (3) troweling the sunken part with the composite heat-insulating slurry with good fluidity, leveling the raised part by erecting a trowel, smearing the heat-insulating layer by the trowel in a horizontal and vertical sequence, and detecting by using a line supporting ruler and a 2m bar ruler to ensure that the flatness of the heat-insulating layer meets the requirement of acceptance standards.
6. When the door and window opening is constructed, the side opening, the windowsill and the upper opening of the window are firstly plastered, then a large wall surface is plastered, a unilateral splayed guiding rule is cut according to the size of the door and window opening before construction, and the opening is constructed by pasting the rule so as to ensure the squareness of the door and window opening.
7. The internal and external corners are square, during construction, a square ruler is used for checking the right angle of the base wall corner, and a line drop is used for hanging and vertically checking the verticality of the wall corner. When the composite heat-insulating slurry surface layer is plastered in a large angle, a square ruler is used for pressing the wall corner fireproof heat-insulating slurry layer to rub up and down, a trowel is used for repeatedly checking, plastering and repairing to enable the trowel to basically meet the verticality requirement, and then a concave-convex trowel and an convex-convex trowel are used for press polishing to ensure that the verticality deviation and the right-angle deviation are +/-2 mm.
8. When the fireproof heat-preservation slurry is used for plastering, color strip cloth is paved at the corner of a wall to be connected with ground ash and cleaned in time, and when the ground ash is not more than 4 hours, a small amount of the ground ash can be mixed with newly stirred composite heat-preservation slurry in batches for continuous use.
9. The thickness of the fireproof heat-insulating layer is required to meet the design requirement by field inspection, and negative deviation is avoided.
The detailed construction steps for the rendering coat are explained as follows:
the construction of the plastering layer is carried out after the construction of the composite heat-insulating slurry layer outside the heat-insulating plate is finished and the construction quality is qualified. The construction of the plastering layer meets the following requirements:
1. before the surface mortar is smeared, a water dripping groove is made according to the design requirement.
2. The grid cloth is interlaced and wound at the external corner of the two layers or more than two layers of wall surfaces, and the lap joint width is 100 mm-200 mmm.
Laying and pasting the alkali-proof broken fiber mesh cloth in the horizontal direction, wherein the length is about 3000, and the lap joint width of the adjacent alkali-proof glass fiber mesh cloth is 100-200 mm.
3. The finishing mucilage is prepared according to the specification of the product using instruction, and the well is used up within the allowable time of the product. Firstly, smearing first plastering mortar, standing for 12h, pressing alkali-resistant glass fiber mesh into the first plastering anti-cracking mortar, then smearing a second plastering mortar with the thickness of 20mm on the surface of the first plastering mortar, pressing the alkali-resistant glass fiber mesh into the second plastering mortar, paving the second plastering mortar to be smooth and without wrinkles, and standing for 12h, wherein the condition that the dark lattices of the alkali-resistant glass fiber mesh are exposed after the surface layer is solidified is preferred, and the total thickness of the plastering mortar is 3-5 mm. Wherein, alkali-resistant glass fiber mesh cloth should be laid along the outer wall from bottom to top horizontally, and the lap joint width is not less than 100 mm.
A double-layer alkali-resistant glass fiber mesh cloth is laid on the first layer of wall surface, the inner layer of alkali-resistant glass fiber mesh cloth is butted, the butted point is not at the internal and external corners, and the deviation of the butted point from the internal and external corners is not less than 200 mm; the outer alkali-resistant fiberglass mesh should be lapped. The mesh cloth is coated by the plastering mortar, the plastering mortar between the two layers of alkali-resistant glass fiber mesh cloth is full, and dry pasting and dry lap joint are forbidden.
The intermittent staggered racking of the plastering mortar construction is disconnected so as to facilitate the lapping of the subsequent construction. If need pause on continuous wall, the second is said to be plastered the surface mortar and should not cover the alkali-resisting glass fiber screen cloth of having laid completely, need form step slope raft with alkali-resisting glass fiber screen cloth, stays the raft interval and is not less than 150 mm.
4. After finishing the construction of the plastering mortar, the leveling, verticality and the squareness of the internal and external corners should be checked, and the plastering mortar which does not meet the requirements should be used for repairing.
5. After finishing laying the finishing mucilage and the alkali-resistant glass fiber mesh cloth, the finishing mucilage and the alkali-resistant glass fiber mesh cloth cannot be scratched, and the next procedure of construction can be carried out only after the finishing mucilage and the alkali-resistant glass fiber mesh cloth are kept for not less than 24 hours. In cold humid climates, the curing time should also be extended appropriately.
6. After the construction is finished, finished product protection is required, and drilling, grooving and the like on the finished wall body are strictly forbidden.
The detailed construction procedure for the facing layer is explained as follows:
after the finishing layer is dried, the flexible water-resistant putty is constructed, a steamed bread knife or a scraper blade is used for scraping, after the first time of flexible water-resistant putty is dried, the second time of putty is scraped, compacted and polished to be alive.
The batch scraping flexible waterproof putty is not easy to leak, does not leak scraping, does not leave a joint, and completely covers the front surface. And after the flexible waterproof putty layer is completely dried and solidified, constructing the surface layer coating. The surface coating department should adopt special agitator to stir evenly. The roller coating construction is carried out from top to bottom from the top of the wall.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. An exterior wall fire prevention heat preservation system for installing in the outside of basic unit's wall body, its characterized in that includes: the fireproof heat-preservation leveling layer, the fireproof heat-preservation layer and the plurality of heat-preservation plates; the heat insulation boards can be bonded to the outer surface of the base layer wall through bonding layers, and fireproof heat insulation materials are filled between any two adjacent heat insulation boards;
and one side of the heat-insulation board, which is far away from the base wall, is sequentially covered with the common fireproof heat-insulation leveling layer and the fireproof heat-insulation layer.
2. The exterior wall fireproof heat insulation system of claim 1, wherein the fireproof heat insulation material and the fireproof heat insulation layer are made of the same material, and are both formed by compounding a rubber powder material prepared by mixing redispersed rubber powder, an inorganic cementing material and an additive, and vitrified micro bubbles and polyphenyl particles serving as aggregates.
3. The exterior fire protection and insulation system of claim 1, wherein the insulation is further attachable to the base wall by a fastening assembly; the fastening assembly comprises an expansion sleeve and a screw, the expansion sleeve comprises a disc-shaped mounting groove part and a connecting pipe part which are connected, one end of the screw is inserted into the connecting pipe part, and the other end, opposite to the screw, of the screw is in threaded connection with the base wall.
4. The exterior wall fireproof and heat-insulation system of any one of claims 1 to 3, further comprising a finishing layer and a decorative layer, wherein the finishing layer and the decorative layer are sequentially covered on one side of the fireproof and heat-insulation layer far away from the base wall.
5. The exterior wall fire prevention and thermal insulation system of claim 4, wherein the insulation board is a molded graphite polyphenyl insulation board; and/or
The plastering layer consists of a first layer of plastering anti-cracking mortar, an alkali-resistant glass fiber net and a second layer of plastering anti-cracking mortar, and the first layer of plastering anti-cracking mortar and the second layer of plastering anti-cracking mortar consist of cement-based cementing materials, high polymer materials, sand and additives; and/or
The bonding layer is formed by dry curing of bonding mortar, and the bonding mortar consists of a cement-based cementing material, a high polymer material, sand and an additive; and/or
A plurality of the heated board encloses and establishes square structure, just square structure's apex angle position that is close to ground is provided with the bearing member of L type, the bearing member can pass through fastener fixed connection in basic unit's wall body.
6. A construction method of an external wall fireproof heat insulation system is characterized by comprising the following steps:
treating a basic wall: treating the base wall before construction to ensure that the outer surface of the base wall is smooth, clean and dry;
construction of a heat insulation layer: hanging a vertical line and a control line in a springing manner on the outer surface of the base wall, and marking the installation position of the insulation board; coating adhesive mortar on the inner surface of the heat insulation plate, adhering the heat insulation plate at the installation position of the heat insulation plate determined by the vertical line and the control line, and filling the gaps between the two adjacent heat insulation plates with fireproof heat insulation slurry;
fixing the heat insulation board on the base layer wall, and then coating a fireproof heat insulation slurry leveling layer on one side of the heat insulation board, which is far away from the base layer wall;
construction of a fireproof heat-insulating layer: constructing a plurality of thickness control ash cakes on the surface of the fireproof heat-preservation slurry leveling layer;
coating a fireproof heat-insulating layer on the surface of the fireproof heat-insulating slurry leveling layer until the surface of the fireproof heat-insulating layer is flush with the surface of the thickness control ash cake;
paving a plastering layer on the fireproof heat-insulating layer;
and after the rendering coat is dried, paving a finishing coat on the rendering coat.
7. The construction method of the external wall fireproof and heat insulation system according to claim 6, wherein the construction of the fireproof and heat insulation layer comprises the following steps:
constructing thickness control ash cakes on the surface of the fireproof heat-insulation slurry leveling layer at intervals in sequence along the direction of a vertical control line, pulling a transverse line between a plurality of ash cakes at the same horizontal position after the construction of at least two rows of thickness control ash cakes in the vertical direction is finished, and supplementing other thickness control ash cakes at intervals in sequence in the horizontal direction according to the preset intervals according to the transverse line, wherein the thickness control ash cakes are made of the same material as the fireproof heat-insulation layer;
and coating the fireproof heat-insulating layer on the surface of the fireproof heat-insulating slurry leveling layer until the surface of the fireproof heat-insulating layer is flush with the surface of the thickness control ash cake.
8. The construction method of the external wall fireproof heat insulation system according to claim 6, wherein in the plastering layer construction, after the fireproof heat insulation layer is constructed, an alkali-resistant glass fiber net is laid on the fireproof heat insulation layer, and the alkali-resistant glass fiber net is bonded with the fireproof heat insulation layer through adhesive cement bonding; coating anti-crack mortar on the surface of the alkali-resistant glass fiber web;
in the construction of the veneer layer, after the finishing layer is dried, a flexible waterproof putty layer is coated, and after the flexible waterproof putty is dried and solidified, the construction of the surface layer coating is carried out.
9. The construction method of the external wall fireproof and heat insulation system according to claim 8, wherein the finishing layer construction comprises the following steps:
after the construction of the fireproof heat-insulating layer is completed, a first layer of plastering anti-cracking mortar is smeared on the surface of the fireproof heat-insulating layer, after standing for a preset time, the alkali-resistant glass fiber mesh cloth is pressed into the first layer of plastering anti-cracking mortar, a second layer of plastering anti-cracking mortar is smeared on the outer surface of the alkali-resistant glass fiber mesh cloth, and after the first layer of plastering anti-cracking mortar and the second layer of plastering anti-cracking mortar are solidified, the anti-cracking mortar is coated.
10. The construction method of the external wall fireproof and heat insulation system according to any one of claims 6 to 9, wherein the basement wall treatment comprises the following steps:
removing bulges, hollows and cracking parts with the wall surface being larger than 10mm, and leveling the bulges, hollows and cracking parts by adopting polymer mortar;
cleaning wall through holes and wall defects, and then leveling the wall through holes and the wall defects by using polymer mortar;
watering and wetting the hole parts of the wall surface, and adopting polymer mortar to completely fill and build the hole parts tightly;
and coating an interface agent on the surface of the treated base layer wall.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112982799A (en) * | 2021-03-02 | 2021-06-18 | 中锦泰(北京)建筑工程有限公司 | Energy-saving building interior decoration structure |
| CN113026973A (en) * | 2021-04-07 | 2021-06-25 | 日照德丰节能材料有限公司 | Composite interface layer insulation board |
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Application publication date: 20210223 |