CN111173308B - Construction method for repairing thermal insulation crack of external wall - Google Patents
Construction method for repairing thermal insulation crack of external wall Download PDFInfo
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- CN111173308B CN111173308B CN202010030031.7A CN202010030031A CN111173308B CN 111173308 B CN111173308 B CN 111173308B CN 202010030031 A CN202010030031 A CN 202010030031A CN 111173308 B CN111173308 B CN 111173308B
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- 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
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Abstract
The invention discloses a construction method for repairing an external wall heat-insulation crack, which relates to the technical field of buildings and comprises the following steps: determining a construction area; chiseling all heat preservation plate parts with the adhesion strength lower than 0.095Mpa, cutting new heat preservation plates according to the shapes of the chiseling areas, and placing the heat preservation plates into the chiseling areas; injecting hard foaming resin into a gap between the newly placed insulation board and the original insulation board; smearing a layer of flexible waterproof putty, and paving an alkali-resistant glass fiber mesh cloth; coating paint on the surface of the putty, and standing for 12-15 h. According to the invention, the edge line of the area beyond the standard is used as a reference and extends outwards for 20-30cm to form a construction area, so that the insulation board of the potential deformation area part can be replaced, and the replacement effect is improved; the adhesion strength is measured through the heat-insulation plate, so that the engineering safety and the rationality of a construction area can be improved; through filling into the foaming material who mixes well between the heated board of newly putting into and the heated board that persists, can improve the heat preservation effect.
Description
Technical Field
The invention relates to the technical field of buildings, in particular to a construction method for repairing an external wall heat-insulation crack.
Background
The outer insulation board is attached to the outer wall of a building, has a very low heat conductivity coefficient, and can reduce heat exchange between the building and the external environment. Therefore, the heat insulation board is attached to the outer wall of the building, so that the internal temperature of the building material can be effectively kept stable, and the energy is saved. The outer insulation board is typically a foamed resin material. The resin material has light weight, corrosion resistance and good heat preservation effect. In the construction process, can be at the outside coating one deck coating of heated board usually to reduce the heated board by the erosion of sunshine, rainwater etc. improve heated board life. But the heated board can be because of the condition that crooked or swell appears in reasons such as irregular pile up or ageing in the storage process, leads to heated board outside dope layer to appear the crack easily. The coating cracks, so that the insulation board is directly contacted with the sunlight in an external environment, the corrosion rate of the insulation board can be accelerated by the factors, and the service life of the insulation board is shortened.
However, the existing insulation board repairing method is easy to damage again after repair. Therefore, the invention provides a construction method for repairing the heat-insulating crack of the outer wall, so as to prolong the effective repairing time.
Disclosure of Invention
The invention aims to provide a construction method for repairing an external wall heat-insulation crack, which aims to solve the technical problem.
A construction method for repairing an external wall heat-insulation crack comprises the following steps:
measuring the verticality of a heat insulation layer around a crack by taking the crack as a center, marking an edge line of an area with the verticality exceeding the standard, outwards extending for 20-30cm by taking the edge line as a reference to form a construction area, knocking off a coating layer in the construction area, removing a grid cloth layer, and exposing an internal heat insulation plate;
step two, measuring the adhesion strength of the exposed part of the insulation board, dividing an area with the adhesion strength lower than 0.095Mpa as a boundary line by taking 0.095Mpa as the boundary line, and marking an edge line of the area; cutting along the edge line of the area, and completely chiseling the plate part with the adhesive strength lower than 0.095 Mpa; cutting out insulation boards with the same shape according to the shape of the area, putting the insulation boards into the chiseled-out area, and adhering the newly-placed insulation boards to the wall surface by adopting glue; injecting hard foaming resin into a gap between the newly placed insulation board and the original insulation board, leveling and standing for 2-3 d;
thirdly, coating a layer of flexible waterproof putty on the newly placed insulation board, then laying a layer of alkali-resistant glass fiber mesh cloth, extending the mesh fiber cloth to two sides and overlapping the laying area of the old mesh fiber cloth by 10-15cm, then coating a layer of waterproof putty, leveling and standing for 10-15 h;
and step four, coating paint on the surface of the putty, leveling and standing for 12-15 hours.
In a preferred embodiment of the present invention, the foaming resin in the second step is a prepared polyamide resin raw material mixture or a foaming polyurethane raw material mixture.
And as a preferred scheme of the invention, in the second step, chiseling the edge of the old insulation board is straight, chiseling the edge of the newly filled insulation board is straight, and the gap distance between the newly filled insulation board and the old insulation board is less than or equal to 0.1 cm.
As a preferred scheme of the invention, the glue in the second step is mainly prepared from the following main components in percentage by mass: 10-15 parts of methyl methacrylate, 8-12 parts of butyl acrylate, 6-11 parts of methacrylic acid, 2-4 parts of bromoheptane and 0.5-1 part of Pt catalyst.
As a preferred scheme of the invention, the putty in the third step is prepared from the following main components in parts by mass: 15-20 parts of calcium silicate, 3-5 parts of calcium carbonate, 2-4 parts of bentonite, 2-3 parts of silicon dioxide, 2-4 parts of limestone, 3-5 parts of sierozem powder, 1-3 parts of perlite, 2-5 parts of fly ash and 20-25 parts of polyphenyl particles.
As a preferred scheme of the invention, the thickness of the putty applied in the third step is 1-2 mm.
As a preferred embodiment of the present invention, the verticality measuring method in the first step specifically operates as follows: and vertically hanging a heavy weight from top to bottom, measuring the distance between the heavy weight and the vertical wall surface of the building, and taking an area with the distance being more than three ten-thousandth of the height of a measuring point as an area exceeding the standard area.
And as a preferred scheme of the invention, after the insulation board newly placed in the step two is placed for 2-3 days, the adhesion strength of the insulation board is detected, so that the adhesion strength of the insulation board is less than 0.095 Mpa.
As a preferable scheme of the invention, the coating in the third step is prepared from the following main components in parts by mass: 10-16 parts of quartz powder, 2-6 parts of starch, 3-5 parts of calcium carbonate, 15-20 parts of polystyrene, 12-18 parts of methyl acrylate monomer, 3-5 parts of lignin, 3-5 parts of humic acid and 3-6 parts of mineral cellulose.
As a preferred scheme of the invention, the specific measurement method of the bonding strength in the first step is to tightly install the bonding strength tester on the heat insulation board, continuously load at the loading rate of 0.05-0.08Mpa/min until the strength displayed on the bonding strength tester is greater than 0.095Mpa, and if the strength displayed on the strength tester is less than 0.095Mpa, the heat insulation board and the wall surface are separated, so that the area is unqualified.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, by measuring the verticality of the heat-insulating layer around the crack, marking the edge line of the area with the verticality exceeding the standard, and then taking the edge line as a reference to extend 20-30cm outwards to form a construction area, the heat-insulating plate in the potential deformation area part can be replaced, and the replacement effect is improved; the adhesion strength is measured through the insulation board, and the standard of the adhesion strength is set to be 0.095Mpa, so that the adhesion strength of the insulation board can be ensured within a reasonable range, and the engineering safety and the rationality of a construction area are improved; through filling into the foaming material who mixes well between the heated board of newly putting into and the heated board that persists, can solidify through the foaming material and fill the gap, improve the heat preservation effect.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
A construction method for repairing an external wall heat-insulation crack comprises the following steps:
measuring the verticality of a heat insulation layer around a crack by taking the crack as a center, marking an edge line of an area with the verticality exceeding the standard, outwards extending for 20-30cm by taking the edge line as a reference to form a construction area, knocking off a coating layer in the construction area, removing a grid cloth layer, and exposing an internal heat insulation plate;
step two, measuring the adhesion strength of the exposed part of the insulation board, dividing an area with the adhesion strength lower than 0.095Mpa as a boundary line by taking 0.095Mpa as the boundary line, and marking an edge line of the area; cutting along the edge line of the area, and completely chiseling the plate part with the adhesive strength lower than 0.095 Mpa; cutting out insulation boards with the same shape according to the shape of the area, putting the insulation boards into the chiseled-out area, and adhering the newly-placed insulation boards to the wall surface by adopting glue; injecting hard foaming resin into a gap between the newly placed insulation board and the original insulation board, leveling and standing for 2-3 d;
thirdly, coating a layer of flexible waterproof putty on the newly placed insulation board, then laying a layer of alkali-resistant glass fiber mesh cloth, extending the mesh fiber cloth to two sides and overlapping the laying area of the old mesh fiber cloth by 10-15cm, then coating a layer of waterproof putty, leveling and standing for 10-15 h;
and step four, coating paint on the surface of the putty, leveling and standing for 24 hours.
Wherein, the foaming resin in the step two is prepared polyamide resin raw material mixture or foaming polyurethane raw material mixture.
And C, chiseling the edge of the old insulation board in the step II to be straight, chiseling the edge of the newly filled insulation board to be straight, and enabling the gap distance between the newly filled insulation board and the old insulation board to be less than or equal to 0.1 cm.
Wherein, the glue in the second step is prepared from the following main components in parts by mass: 10-15 parts of methyl methacrylate, 8-12 parts of butyl acrylate, 6-11 parts of methacrylic acid, 2-4 parts of bromoheptane and 0.5-1 part of Pt catalyst.
The putty in the second step is prepared from the following main components in parts by mass: 15-20 parts of calcium silicate, 3-5 parts of calcium carbonate, 2-4 parts of bentonite, 2-3 parts of silicon dioxide, 2-4 parts of limestone, 3-5 parts of sierozem powder, 1-3 parts of perlite, 2-5 parts of fly ash and 20-25 parts of polyphenyl particles.
Wherein, the thickness of the putty in the third step is 1-2 mm.
The verticality measuring method in the first step specifically operates as follows: and vertically hanging a heavy weight from top to bottom, measuring the distance between the heavy weight and the vertical wall surface of the building, and taking an area with the distance being more than three ten-thousandth of the height of a measuring point as an area exceeding the standard area.
And D, detecting the adhesion strength of the insulation board newly placed in the step II after 2-3 days of placement, so that the adhesion strength is less than 0.095 MPa.
The coating in the third step is prepared from the following main components in parts by mass: 10-16 parts of quartz powder, 2-6 parts of starch, 3-5 parts of calcium carbonate, 15-20 parts of polystyrene, 12-18 parts of methyl acrylate monomer, 3-5 parts of lignin, 3-5 parts of humic acid and 3-6 parts of mineral cellulose.
And C, closely mounting a bonding strength tester on the heat-insulating plate, continuously loading at an loading rate of 0.05-0.08Mpa/min until the strength displayed on the bonding strength tester is greater than 0.095Mpa, and if the strength displayed on the bonding strength tester is less than 0.095Mpa, separating the heat-insulating plate from the wall surface, so that the area is unqualified.
The specific embodiment of the invention:
example one
Measuring the verticality of the heat-insulating layer around the crack by taking the crack as a center, specifically, vertically suspending a heavy weight from top to bottom, measuring the distance between the heavy weight and the vertical wall surface of a building, taking an area with the distance being more than three ten-thousandth of the height of a measuring point as an area exceeding a standard, marking an edge line of the area with the verticality exceeding the standard, outwards extending 20cm by taking the edge line as a reference to form a construction area, knocking off a coating layer in the construction area, removing a grid cloth layer, and exposing an internal heat-insulating plate;
the method comprises the following steps of measuring the adhesion strength of the exposed part of the heat-insulation plate, wherein a bonding strength tester is tightly installed on the heat-insulation plate, and continuous loading is carried out at the loading rate of 0.05Mpa/min until the strength displayed on the bonding strength tester is greater than 0.095Mpa, and if the strength displayed on the bonding strength tester is less than 0.095Mpa, the heat-insulation plate is separated from the wall surface, so that the area is unqualified; marking out a region with the adhesion strength lower than 0.095Mpa as a boundary line, and marking out an edge line of the region; cutting along the edge line of the area, chiseling all the plate parts with the adhesive strength lower than 0.095Mpa, and keeping the chiseling opening at the edge of the heat-insulation plate straight; according to regional shape, tailor out the heated board that the shape is unanimous, ensure that this heated board cuts a hole straightly, the heated board of cutting out is put into and is dug out the region, ensures that the gap distance between the heated board that newly fills in and the old heated board is 0.1cm, and the heated board that newly puts into adopts glue and wall adhesion, and wherein, glue is prepared by following main quality parts component: 10 parts of methyl methacrylate, 8 parts of butyl acrylate, 6 parts of methacrylic acid, 2 parts of bromoheptane and 0.5 part of Pt catalyst; injecting a polyamide resin raw material mixture or a foaming polyurethane raw material mixture into a gap between the newly placed insulation board and the original insulation board, leveling and standing for 2 d; detecting the adhesion strength after 2 days to ensure that the adhesion strength is less than 0.095 Mpa;
coating a layer of flexible waterproof putty on the newly placed insulation board, wherein the coating thickness of the putty is 1 mm; the putty is prepared from the following main components in parts by mass: 15 parts of calcium silicate, 3 parts of calcium carbonate, 2 parts of bentonite, 2 parts of silicon dioxide, 2 parts of limestone, 3 parts of sierozem powder, 1 part of perlite, 2 parts of fly ash and 20 parts of polyphenyl particles; then laying a layer of alkali-resistant glass fiber mesh cloth, extending the mesh fiber cloth to two sides and overlapping the laying area of the old mesh fiber cloth by 10cm, then smearing a layer of waterproof putty, leveling and standing for 10 h;
coating a paint on the surface of the putty, trowelling, and standing for 24 hours, wherein the paint is prepared from the following main components in parts by mass: 10 parts of quartz powder, 2 parts of starch, 3 parts of calcium carbonate, 15 parts of polystyrene, 12 parts of methyl acrylate monomer, 3 parts of lignin, 3 parts of humic acid and 3 parts of mineral cellulose.
Example two
Measuring the verticality of the heat-insulating layer around the crack by taking the crack as a center, specifically, vertically suspending a heavy weight from top to bottom, measuring the distance between the heavy weight and the vertical wall surface of a building, taking an area with the distance being more than three ten-thousandth of the height of a measuring point as an area exceeding a standard, marking an edge line of the area with the verticality exceeding the standard, outwards extending for 30cm by taking the edge line as a reference to form a construction area, knocking off a coating layer in the construction area, removing a grid cloth layer, and exposing an internal heat-insulating plate;
the method comprises the following steps of measuring the adhesion strength of the exposed part of the heat-insulation plate, wherein a bonding strength tester is tightly installed on the heat-insulation plate, and continuous loading is carried out at the loading rate of 0.08Mpa/min until the strength displayed on the bonding strength tester is greater than 0.095Mpa, and if the strength displayed on the bonding strength tester is less than 0.095Mpa, the heat-insulation plate is separated from the wall surface, so that the area is unqualified; marking out a region with the adhesion strength lower than 0.095Mpa as a boundary line, and marking out an edge line of the region; cutting along the edge line of the area, chiseling all the plate parts with the adhesive strength lower than 0.095Mpa, and keeping the chiseling opening at the edge of the heat-insulation plate straight; according to regional shape, tailor out the heated board that the shape is unanimous, ensure that this heated board cuts a hole straightly, the heated board of cutting out is put into and is dug out the region, ensures that the gap distance between the heated board that newly fills in and the old heated board is 0.05cm, and the heated board that newly puts into adopts glue and wall adhesion, and wherein, glue is prepared by following main quality parts component: 15 parts of methyl methacrylate, 12 parts of butyl acrylate, 11 parts of methacrylic acid, 4 parts of bromoheptane and 1 part of Pt catalyst; injecting polyamide resin raw material mixture or foaming polyurethane raw material mixture into a gap between the newly placed insulation board and the original insulation board, leveling and standing for 3 d; detecting the adhesion strength of the mixture after 3 days to enable the adhesion strength to be less than 0.095 Mpa;
coating a layer of flexible waterproof putty on the newly placed insulation board, wherein the coating thickness of the putty is 2 mm; the putty is prepared from the following main components in parts by mass: 20 parts of calcium silicate, 5 parts of calcium carbonate, 4 parts of bentonite, 3 parts of silicon dioxide, 4 parts of limestone, 5 parts of sierozem powder, 3 parts of perlite, 5 parts of fly ash and 25 parts of polyphenyl particles; then laying a layer of alkali-resistant glass fiber mesh cloth, extending the mesh fiber cloth to two sides, overlapping the old mesh fiber cloth laying area by 15cm, then coating a layer of waterproof putty, leveling and standing for 15 h;
coating a paint on the surface of the putty, trowelling, and standing for 24 hours, wherein the paint is prepared from the following main components in parts by mass: 16 parts of quartz powder, 6 parts of starch, 5 parts of calcium carbonate, 20 parts of polystyrene, 18 parts of methyl acrylate monomer, 5 parts of lignin, 5 parts of humic acid and 6 parts of mineral cellulose.
EXAMPLE III
Measuring the verticality of the heat-insulating layer around the crack by taking the crack as a center, specifically, vertically suspending a heavy weight from top to bottom, measuring the distance between the heavy weight and the vertical wall surface of a building, taking an area with the distance being more than three ten-thousandth of the height of a measuring point as an area exceeding a standard, marking an edge line of the area with the verticality exceeding the standard, outwards extending 20-30cm by taking the edge line as a reference to form a construction area, knocking off a coating layer in the construction area, removing a grid cloth layer, and exposing an internal heat-insulating plate;
the method comprises the following steps of measuring the adhesion strength of the exposed part of the heat-insulation plate, wherein a bonding strength tester is tightly installed on the heat-insulation plate, and continuous loading is carried out at the loading rate of 0.06Mpa/min until the strength displayed on the bonding strength tester is greater than 0.095Mpa, and if the strength displayed on the bonding strength tester is less than 0.095Mpa, the heat-insulation plate is separated from the wall surface, so that the area is unqualified; marking out a region with the adhesion strength lower than 0.095Mpa as a boundary line, and marking out an edge line of the region; cutting along the edge line of the area, chiseling all the plate parts with the adhesive strength lower than 0.095Mpa, and keeping the chiseling opening at the edge of the heat-insulation plate straight; according to regional shape, tailor out the heated board that the shape is unanimous, ensure that this heated board cuts a hole straightly, the heated board of cutting out is put into and is dug out the region, ensures that the gap distance between the heated board that newly fills in and the old heated board is 0.08cm, and the heated board that newly puts into adopts glue and wall adhesion, and wherein, glue is prepared by following main quality parts component: 12 parts of methyl methacrylate, 10 parts of butyl acrylate, 9 parts of methacrylic acid, 3 parts of bromoheptane and 0.75 part of Pt catalyst; injecting a polyamide resin raw material mixture or a foaming polyurethane raw material mixture into a gap between the newly placed insulation board and the original insulation board, leveling and standing for 2.5 ℃; detecting the adhesion strength after 2.5 days to ensure that the adhesion strength is less than 0.095 Mpa;
coating a layer of flexible waterproof putty on the newly placed insulation board, wherein the coating thickness of the putty is 1-2 mm; the putty is prepared from the following main components in parts by mass: 17 parts of calcium silicate, 4 parts of calcium carbonate, 3 parts of bentonite, 2 parts of silicon dioxide, 3 parts of limestone, 4 parts of sierozem powder, 2 parts of perlite, 4 parts of fly ash and 22 parts of polyphenyl particles; then laying a layer of alkali-resistant glass fiber mesh cloth, extending the mesh fiber cloth to two sides, overlapping the old mesh fiber cloth laying area by 12cm, then coating a layer of waterproof putty, leveling and standing for 13 h;
coating a paint on the surface of the putty, trowelling, and standing for 24 hours, wherein the paint is prepared from the following main components in parts by mass: 14 parts of quartz powder, 4 parts of starch, 4 parts of calcium carbonate, 17 parts of polystyrene, 16 parts of methyl acrylate monomer, 4 parts of lignin, 4 parts of humic acid and 4 parts of mineral cellulose.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. The construction method for repairing the heat-insulating crack of the outer wall is characterized by comprising the following steps:
measuring the verticality of a heat insulation layer around a crack by taking the crack as a center, marking an edge line of an area with the verticality exceeding the standard, outwards extending for 20-30cm by taking the edge line as a reference to form a construction area, knocking off a coating layer in the construction area, removing a grid cloth layer, and exposing an internal heat insulation plate;
step two, measuring the adhesion strength of the exposed part of the insulation board, dividing an area with the adhesion strength lower than 0.095Mpa as a boundary line by taking 0.095Mpa as the boundary line, and marking an edge line of the area; cutting along the edge line of the area, and completely chiseling the plate with the adhesive strength lower than 0.095 Mpa; cutting out insulation boards with the same shape according to the shape of the area, putting the insulation boards into the chiseled-out area, and adhering the newly-placed insulation boards to the wall surface by adopting glue; injecting foaming resin into a gap between the newly placed insulation board and the original insulation board, leveling and standing for 2-3 d;
thirdly, coating a layer of flexible waterproof putty on the newly placed insulation board, then laying a layer of alkali-resistant glass fiber mesh cloth, extending the mesh fiber cloth to two sides and overlapping the laying area of the old mesh fiber cloth by 10-15cm, then coating a layer of waterproof putty, leveling and standing for 10-15 h;
and step four, coating paint on the surface of the putty, leveling and standing for 12-15 hours.
2. The method as claimed in claim 1, wherein the foaming resin in step two is a prepared polyamide resin raw material mixture or a foaming polyurethane raw material mixture.
3. The construction method for repairing the heat-insulating crack of the external wall as claimed in claim 1, wherein in the second step, the chisel edge of the old heat-insulating board is flat, the chisel edge of the newly-filled heat-insulating board is flat, and the gap distance between the newly-filled heat-insulating board and the old heat-insulating board is less than or equal to 0.1 cm.
4. The construction method for repairing the heat-insulating crack of the external wall as claimed in claim 1, wherein the glue in the second step is prepared from the following main components in parts by mass: 10-15 parts of methyl methacrylate, 8-12 parts of butyl acrylate, 6-11 parts of methacrylic acid, 2-4 parts of bromoheptane and 0.5-1 part of Pt catalyst.
5. The construction method for repairing the heat-insulating crack of the external wall as claimed in claim 1, wherein the putty in the third step is prepared from the following main components in parts by mass: 15-20 parts of calcium silicate, 3-5 parts of calcium carbonate, 2-4 parts of bentonite, 2-3 parts of silicon dioxide, 2-4 parts of limestone, 3-5 parts of sierozem powder, 1-3 parts of perlite, 2-5 parts of fly ash and 20-25 parts of polyphenyl particles.
6. The construction method for repairing the heat-insulating crack of the external wall as claimed in claim 1, wherein the thickness of the putty applied in the third step is 1-2 mm.
7. The construction method for repairing the heat-insulating crack of the external wall as claimed in claim 1, wherein the verticality measuring method in the first step is specifically operated as follows: and vertically hanging a heavy weight from top to bottom, measuring the distance between the heavy weight and the vertical wall surface of the building, and taking an area with the distance being more than three ten-thousandth of the height of a measuring point as an area exceeding the standard area.
8. The construction method for repairing the heat-insulating crack of the external wall as claimed in claim 1, wherein the adhesion strength of the newly placed heat-insulating board in the second step is detected after 2-3 days from the placement of the newly placed heat-insulating board, so that the adhesion strength is greater than 0.095 Mpa.
9. The construction method for repairing the heat-insulating crack of the external wall as claimed in claim 1, wherein the coating in the third step is prepared from the following main components in parts by mass: 10-16 parts of quartz powder, 2-6 parts of starch, 3-5 parts of calcium carbonate, 15-20 parts of polystyrene, 12-18 parts of methyl acrylate monomer, 3-5 parts of lignin, 3-5 parts of humic acid and 3-6 parts of mineral cellulose.
10. The construction method for repairing the heat-insulating crack of the outer wall as claimed in claim 1, wherein the specific measurement method of the bonding strength in the first step is to tightly install a bonding strength tester on the heat-insulating board, and continuously load at a load rate of 0.05-0.08Mpa/min until the bonding strength tester shows that the strength is greater than 0.095Mpa, and if the strength tester shows that the strength is less than 0.095Mpa, the heat-insulating board and the wall surface are separated, which indicates that the area is unqualified.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100523408C (en) * | 2008-05-15 | 2009-08-05 | 浙江中富建筑集团股份有限公司 | Building wall crack repairing method |
| CN103195217B (en) * | 2013-04-23 | 2013-11-13 | 山东建筑大学 | Adhering outer wall outer heat insulating system energy-saving reconstruction base layer processing method for existing buildings |
| CN103321442A (en) * | 2013-06-14 | 2013-09-25 | 浙江建设职业技术学院 | Self-compensating repair structure and process for internal stress cracking of inner wall heat insulating wall surface |
| CN109944455A (en) * | 2017-12-21 | 2019-06-28 | 新昌县鼎绑机电有限公司 | A kind of building masonry wall method for repairing crack |
| CN110185278A (en) * | 2019-04-19 | 2019-08-30 | 上海市建筑装饰工程集团有限公司 | The restorative procedure of existing building external thermal insulation system |
| CN110185274A (en) * | 2019-04-19 | 2019-08-30 | 上海市建筑装饰工程集团有限公司 | The restorative procedure that existing building exterior wall true stone paint falls off |
| CN110439314A (en) * | 2019-08-14 | 2019-11-12 | 上海忠辰建设工程有限公司 | A kind of heat preserving exterior wall infiltration repairerment method |
| CN110439313B (en) * | 2019-08-14 | 2021-08-03 | 上海忠辰建设工程有限公司 | Thermal insulation exterior wall repairing process |
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