CN107761967B - Heat insulation treatment method for heat bridge part of external wall self-heat insulation system - Google Patents
Heat insulation treatment method for heat bridge part of external wall self-heat insulation system Download PDFInfo
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- CN107761967B CN107761967B CN201710985944.2A CN201710985944A CN107761967B CN 107761967 B CN107761967 B CN 107761967B CN 201710985944 A CN201710985944 A CN 201710985944A CN 107761967 B CN107761967 B CN 107761967B
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- 238000009413 insulation Methods 0.000 title claims abstract description 82
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 47
- 239000002002 slurry Substances 0.000 claims abstract description 26
- 239000004744 fabric Substances 0.000 claims abstract description 23
- 239000011248 coating agent Substances 0.000 claims abstract description 20
- 238000000576 coating method Methods 0.000 claims abstract description 20
- 239000011083 cement mortar Substances 0.000 claims abstract description 7
- 238000004140 cleaning Methods 0.000 claims abstract description 6
- 239000000843 powder Substances 0.000 claims description 20
- 239000011414 polymer cement Substances 0.000 claims description 19
- 229920000642 polymer Polymers 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 5
- 239000003513 alkali Substances 0.000 claims description 5
- 239000002585 base Substances 0.000 claims description 5
- 229920003086 cellulose ether Polymers 0.000 claims description 5
- 239000004568 cement Substances 0.000 claims description 5
- 239000003063 flame retardant Substances 0.000 claims description 5
- 239000010881 fly ash Substances 0.000 claims description 5
- 239000003365 glass fiber Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 239000011325 microbead Substances 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 229920006389 polyphenyl polymer Polymers 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 230000002940 repellent Effects 0.000 claims description 5
- 239000005871 repellent Substances 0.000 claims description 5
- 229910000077 silane Inorganic materials 0.000 claims description 5
- 238000004017 vitrification Methods 0.000 claims description 5
- DXZMANYCMVCPIM-UHFFFAOYSA-L zinc;diethylphosphinate Chemical compound [Zn+2].CCP([O-])(=O)CC.CCP([O-])(=O)CC DXZMANYCMVCPIM-UHFFFAOYSA-L 0.000 claims description 5
- 239000011464 hollow brick Substances 0.000 claims description 3
- 238000005336 cracking Methods 0.000 abstract description 5
- 239000003973 paint Substances 0.000 abstract description 5
- 238000004321 preservation Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004079 fireproofing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
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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
-
- 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
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/90—Passive houses; Double facade technology
Abstract
The invention discloses a heat insulation treatment method for a heat bridge part of an external wall self-heat insulation system, which comprises the following steps: constructing a self-heat-insulation wall, wherein the self-heat-insulation wall protrudes out of the side line of the concrete heat bridge part of the building outer wall, the column and the beam by 30-40 mm; cleaning a concrete base layer at a concrete thermal bridge part of an outer wall, a column and a beam of a building; compacting and rounding off waterproof mortar at the junction of the self-insulation wall and concrete, and then coating waterproof paint; constructing a heat insulation layer, and smearing fireproof heat insulation slurry; constructing plastering mortar, smearing the plastering mortar on the heat-insulating layer, controlling the thickness to be 2-3 mm, and pasting the grid cloth on the surface of the plastering mortar, wherein the lap joint width of the grid cloth on the self-heat-insulating wall body is more than or equal to 150 mm; and (5) constructing a cement mortar leveling layer. The invention can effectively solve the problems of cracking and leakage at the junction of the self-insulation wall and the concrete, meet the building energy-saving requirement of the thermal bridge part and improve the safety of the self-insulation system of the outer wall.
Description
Technical Field
The invention relates to the technical field of external wall self-insulation systems, in particular to a heat insulation treatment method for a heat bridge part of an external wall self-insulation system.
Background
The wall self-insulation technology can meet the requirements of wall masonry and energy-saving heat preservation in one step in the project construction process, the construction process is simple, the application specification and standard are complete, the service life of a heat insulation system is the same as that of a building, and the wall self-insulation technology has better safety and fire resistance and is the main direction of wall heat preservation and heat insulation technology development. But in building walls, the thermal bridges may account for 15-35% by area. Because the temperature of the inner surface of the thermal bridge part is low, when the temperature of the inner surface is lower than the dew point temperature, water vapor can be condensed on the surface of the thermal bridge part to form dew condensation, and then dust in the air is easy to stick on the surface of the thermal bridge part to gradually blacken the surface of the thermal bridge part, so that bacteria grow and mildew grow. The heat bridge generates a relatively prominent part, and even water can flow in cold, so that the life and health of people are greatly influenced. The main method for treating the heat bridge of the external wall self-insulation system in the prior art is to paste the heat insulation boards outside the concrete heat bridge parts of the building external walls, columns and beams, so that the quality problems of cracking, leakage and the like frequently occur at the junction of the self-insulation walls and the concrete.
Disclosure of Invention
The invention mainly solves the technical problem of providing a heat insulation treatment method for a heat bridge part of an external wall self-insulation system, which can effectively solve the problems of cracking and leakage at the junction of a self-insulation wall body and concrete, meet the building energy-saving requirement of the heat bridge part and improve the safety of the external wall self-insulation system.
In order to solve the technical problems, the invention adopts a technical scheme that: the heat preservation treatment method for the heat bridge part of the external wall self-heat preservation system comprises the following steps:
(1) constructing a self-heat-insulation wall, wherein the self-heat-insulation wall protrudes out of the side line of the concrete heat bridge part of the building outer wall, the column and the beam by 30-40 mm;
(2) cleaning a concrete base layer at a concrete thermal bridge part of an outer wall, a column and a beam of a building;
(3) compacting and rounding off waterproof mortar at the junction of the self-insulation wall and concrete, and then coating waterproof paint;
(4) constructing a heat insulation layer, and smearing fireproof heat insulation slurry;
(5) constructing plastering mortar, smearing the plastering mortar on the heat-insulating layer, controlling the thickness to be 2-3 mm, and pasting the grid cloth on the surface of the plastering mortar, wherein the lap joint width of the grid cloth on the self-heat-insulating wall body is more than or equal to 150 mm;
(6) and (5) constructing a cement mortar leveling layer.
In a preferred embodiment of the present invention, the self-insulation wall is one of an aerated concrete masonry wall and a concrete hollow brick masonry wall.
In a preferred embodiment of the present invention, the waterproof mortar is polymer cement waterproof mortar.
In a preferred embodiment of the invention, the waterproof coating is JS waterproof coating.
In a preferred embodiment of the present invention, the surface mortar is polymer dry powder mortar.
In a preferred embodiment of the invention, the mesh cloth is 160g-300g of alkali-resistant glass fiber mesh cloth.
In a preferred embodiment of the invention, the fireproof heat-insulating slurry is polymer cement modified EPS fireproof heat-insulating slurry, and the performance of the polymer cement modified EPS fireproof heat-insulating slurry meets the following requirements: dry density less than 280 kg/m3The heat conductivity coefficient is less than 0.065W/(m.K), the compressive strength is more than 0.4MPa, the tensile bonding strength is more than 0.15MPa, and the fire-proof grade is not lower than A2 grade.
In a preferred embodiment of the invention, the polymer cement modified EPS fireproof heat-insulating slurry comprises the following components in percentage by weight: dry powder: vitrification of the micro-beads: polyphenyl particles = (0.8-1.2) kg: (3.5-4.5) liter: 1 liter, wherein the dry powder material consists of the following raw materials in percentage by weight: 72-82% of cement, 3-6% of polymer rubber powder, 0.2-1.0% of cellulose ether, 8-12% of halogen-free flame retardant, 0.5-1% of silane-based water repellent and the balance of fly ash.
The invention has the beneficial effects that:
1. according to the invention, waterproof mortar is used for compacting and fillet drawing at the junction of the self-insulation wall body and the concrete, and then waterproof coating is coated for waterproof treatment, so that the quality problems of cracking, leakage and the like at the junction of the self-insulation wall body and the concrete are solved;
2. the coated polymer cement modified EPS fireproof heat-preservation slurry disclosed by the invention is excellent in bonding performance with a self-heat-preservation wall body and concrete, is integrated, is high in safety performance, and has the same service life as a building.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic structural view of a heat-insulating treatment method for a heat bridge portion of an external wall self-heat-insulating system according to a preferred embodiment of the present invention;
the parts in the drawings are numbered as follows: 1.2, self-insulation wall bodies, 2, concrete thermal bridge positions of building outer walls, columns and beams, 3, plastering mortar, grid cloth, 4, fireproof thermal insulation slurry, 5, waterproof coating, 6 and cement mortar leveling layers.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. 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 invention.
Referring to fig. 1, an embodiment 1 of the present invention includes:
a heat insulation treatment method for a heat bridge part of an external wall self-heat insulation system comprises the following steps:
(1) constructing a self-heat-insulation wall body 1, wherein the self-heat-insulation wall body protrudes out of 2 side lines of concrete heat bridge positions of external walls, columns and beams of buildings by 30 mm;
(2) cleaning a concrete base layer of a concrete thermal bridge part 2 of an outer wall, a column and a beam of a building;
(3) compacting by using waterproof mortar at the junction of the self-insulation wall body 1 and the concrete, drawing out a fillet, and then coating waterproof paint 5;
(4) constructing a heat insulation layer, and smearing fireproof heat insulation slurry 4;
(5) constructing plastering mortar 3, smearing the plastering mortar 3 on the heat-insulating layer, controlling the thickness to be 2-3 mm, sticking the gridding cloth 3 on the surface of the plastering mortar 3, and enabling the lap joint width of the gridding cloth 3 on the self-heat-insulating wall 1 to be more than or equal to 150 mm;
(6) and constructing a cement mortar leveling layer 6.
The self-insulation wall body is an aerated concrete masonry wall, the waterproof mortar is polymer cement waterproof mortar, the waterproof coating is JS waterproof coating, the plastering mortar is polymer dry powder mortar, the gridding cloth is 160g alkali-resistant glass fiber gridding cloth, and the fireproof heat-insulation slurry is polymer cement modified EPS fireproof heat-insulation slurry.
The polymer cement modified EPS fireproof heat-insulation slurry comprises the following components in parts by weight: dry powder: vitrification of the micro-beads: polyphenyl particles =1 kg: 4 liters: 1 liter, wherein the dry powder material consists of the following raw materials in percentage by weight: 72% of cement, 6% of polymer rubber powder, 0.2% of cellulose ether, 12% of halogen-free flame retardant, 0.5% of silane-based water repellent and 9.3% of fly ash.
Referring to fig. 1, an embodiment 2 of the present invention includes:
a heat insulation treatment method for a heat bridge part of an external wall self-heat insulation system comprises the following steps:
(1) constructing a self-heat-insulation wall body 1, wherein the self-heat-insulation wall body 1 protrudes out of 2 side lines 35 mm of concrete heat bridge positions of building external walls, columns and beams;
(2) cleaning a concrete base layer of a concrete thermal bridge part 2 of an outer wall, a column and a beam of a building;
(3) compacting by using waterproof mortar at the junction of the self-insulation wall body 1 and the concrete, drawing out a fillet, and then coating waterproof paint 5;
(4) constructing a heat insulation layer, and smearing fireproof heat insulation slurry 4;
(5) constructing plastering mortar 3, smearing the plastering mortar 3 on the heat-insulating layer, controlling the thickness to be 2-3 mm, sticking the gridding cloth 3 on the surface of the plastering mortar 3, and enabling the lap joint width of the gridding cloth 3 on the self-heat-insulating wall 1 to be more than or equal to 150 mm;
(6) and constructing a cement mortar leveling layer 6.
The self-insulation wall body is a concrete hollow brick masonry wall, the waterproof mortar is polymer cement waterproof mortar, the waterproof coating is JS waterproof coating, the plastering mortar is polymer dry powder mortar, the gridding cloth is 300g of alkali-resistant glass fiber gridding cloth, and the fireproof heat-insulation slurry is polymer cement modified EPS fireproof heat-insulation slurry.
The polymer cement modified EPS fireproof heat-insulation slurry comprises the following components in parts by weight: dry powder: vitrification of the micro-beads: polyphenyl particles =1.2 kg: 3.5 liters: 1 liter, wherein the dry powder material consists of the following raw materials in percentage by weight: 82% of cement, 3% of polymer rubber powder, 1.0% of cellulose ether, 8% of halogen-free flame retardant, 1% of silane-based water repellent and 5% of fly ash.
Referring to fig. 1, an embodiment 3 of the present invention includes:
a heat insulation treatment method for a heat bridge part of an external wall self-heat insulation system comprises the following steps:
(1) constructing a self-heat-insulation wall body 1, wherein the self-heat-insulation wall body 1 protrudes out of 2 side lines of concrete heat bridge positions of building external walls, columns and beams by 40 mm;
(2) cleaning a concrete base layer of a concrete thermal bridge part 2 of an outer wall, a column and a beam of a building;
(3) compacting by using waterproof mortar at the junction of the self-insulation wall body 1 and the concrete, drawing out a fillet, and then coating waterproof paint 5;
(4) constructing a heat insulation layer, and smearing fireproof heat insulation slurry 4;
(5) constructing plastering mortar 3, smearing the plastering mortar 3 on the heat-insulating layer, controlling the thickness to be 2-3 mm, sticking the gridding cloth 3 on the surface of the plastering mortar 3, and enabling the lap joint width of the gridding cloth 3 on the self-heat-insulating wall 1 to be more than or equal to 150 mm;
(6) and constructing a cement mortar leveling layer 6.
The self-insulation wall body is an aerated concrete masonry wall, the waterproof mortar is polymer cement waterproof mortar, the waterproof coating is JS waterproof coating, the plastering mortar is polymer dry powder mortar, the gridding cloth is 240g of alkali-resistant glass fiber gridding cloth, and the fireproof heat-insulation slurry is polymer cement modified EPS fireproof heat-insulation slurry.
The polymer cement modified EPS fireproof heat-insulation slurry comprises the following components in parts by weight: dry powder: vitrification of the micro-beads: polyphenyl particles =0.8 kg: 4.5 liters: 1 liter, wherein the dry powder material consists of the following raw materials in percentage by weight: 77% of cement, 4% of polymer rubber powder, 0.6% of cellulose ether, 10% of halogen-free flame retardant, 0.7% of silane-based water repellent and 7.7% of fly ash.
The performances of the polymer cement modified EPS fireproofing and heat insulating slurry in the embodiments 1 to 3 are shown in Table 1.
TABLE 1
| Item | Unit of | Performance index | Example 1 | Example 2 | Example 3 |
| Dry density | kg/m3 | ≤280 | 262 | 270 | 254 |
| Coefficient of thermal conductivity | W/(m·K) | ≤0.065 | 0.063 | 0.064 | 0.061 |
| Tensile bond strength | MPa | ≥0.15 | 0.17 | 0.19 | 0.16 |
| Compressive strength | MPa | ≥0.40 | 0.51 | 0.56 | 0.44 |
| Combustion performance | — | Not lower than grade A2 | Grade A2 | Grade A2 | Grade A2 |
According to the invention, waterproof mortar is used for compacting and fillet drawing at the junction of the self-insulation wall body and the concrete, and then waterproof coating is coated for waterproof treatment, so that the quality problems of cracking, leakage and the like at the junction of the self-insulation wall body and the concrete are solved; the coated polymer cement modified EPS fireproof heat-preservation slurry disclosed by the invention is excellent in bonding performance with a self-heat-preservation wall body and concrete, is integrated, is high in safety performance, and has the same service life as a building.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (1)
1. A heat insulation treatment method for a heat bridge part of an external wall self-heat insulation system is characterized by comprising the following steps:
(1) constructing a self-heat-insulation wall body, wherein the self-heat-insulation wall body protrudes out of the side line of a concrete heat bridge part of an outer wall, a column and a beam of a building by 35-40 mm, and is one of an aerated concrete masonry wall and a concrete hollow brick masonry wall;
(2) cleaning a concrete base layer at a concrete thermal bridge part of an outer wall, a column and a beam of a building;
(3) compacting and rounding off a joint between the self-insulation wall and concrete by using waterproof mortar, and then coating a waterproof coating, wherein the waterproof mortar is polymer cement waterproof mortar, and the waterproof coating is JS waterproof coating;
(4) and (2) constructing a heat insulation layer, smearing fireproof heat insulation slurry, wherein the fireproof heat insulation slurry is polymer cement modified EPS fireproof heat insulation slurry, and the polymer cement modified EPS fireproof heat insulation slurry has the following mixing ratio: dry powder: vitrification of the micro-beads: polyphenyl particles = (0.8-1.2) kg: (3.5-4.5) liter: 1 liter, wherein the dry powder material consists of the following raw materials in percentage by weight: 72-82% of cement, 3-6% of polymer rubber powder, 0.2-1.0% of cellulose ether, 8-12% of halogen-free flame retardant, 0.5-1% of silane-based water repellent and the balance of fly ash;
(5) constructing plastering mortar, wherein the plastering mortar is smeared on the heat-insulating layer, the thickness is controlled to be 2-3 mm, a mesh cloth is pasted on the surface of the plastering mortar, the lapping width of the mesh cloth on the self-heat-insulating wall body is more than or equal to 150mm, the plastering mortar is polymer dry powder mortar, and the mesh cloth is 160-300 g of alkali-resistant glass fiber mesh cloth;
(6) and (5) constructing a cement mortar leveling layer.
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