CN111042350A - Anti-crack construction method for plastering layers on different interfaces of building outer wall - Google Patents
Anti-crack construction method for plastering layers on different interfaces of building outer wall Download PDFInfo
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- CN111042350A CN111042350A CN201911360039.3A CN201911360039A CN111042350A CN 111042350 A CN111042350 A CN 111042350A CN 201911360039 A CN201911360039 A CN 201911360039A CN 111042350 A CN111042350 A CN 111042350A
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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
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
- E04B1/6801—Fillings therefor
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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
- E04B1/66—Sealings
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
- E04B1/6812—Compressable seals of solid form
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
- E04F13/02—Coverings or linings, e.g. for walls or ceilings of plastic materials hardening after applying, e.g. plaster
Abstract
The invention relates to a crack-resistant construction method for plastering layers on different interfaces of an outer wall of a building, wherein a concave straight groove is formed at the joint of a brick wall and concrete, and the straight groove is cleaned and sufficiently wetted; the first layer of anti-cracking net is lapped at the joint of the brick wall and the concrete along the straight groove as the center, and meanwhile, the first layer of anti-cracking net is laid into the straight groove and attached to the bottom of the groove; filling the straight groove with an elastic filler; carrying out first layer plastering layer construction; and pasting a second anti-cracking net after the first plastering layer is finished, erecting the second plastering layer, and completely covering the second anti-cracking net on the brick wall and the concrete. The invention has the following effects: the straight grooves are formed, the first layer of anti-cracking net is attached to the straight grooves, and then the elastic filling agent is filled, so that on one hand, the anti-cracking performance of cracks formed by contacting the brick wall and concrete can be improved, on the other hand, a certain extending space can be provided, and the generation of cracks on the outer surface can be effectively reduced.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a crack-resistant construction method for different interface plastering layers of a building outer wall.
Background
The treatment of the building connection interface of different materials in building construction is always troublesome, particularly the connection part of the concrete in a masonry wall body and the interface of a masonry brick wall, because the linear coefficient of thermal expansion of the two materials is greatly different when the materials expand with heat and contract with cold, after the building is used for a period of time, a plurality of cracks with different degrees are easy to appear at the joint part, and the wall engineering quality is seriously influenced.
Aiming at the common defects of the building quality, corresponding methods are generally adopted to slow down the cracking phenomenon at the present construction stage: the anti-crack net pieces are pasted on the wall body at the joint, the anti-crack net pieces are buried in the wall body through cement mortar, at the moment, most of internal shrinkage stress generated when the wall body shrinks is born through the anti-crack net pieces, and most of internal shrinkage stress directly acting on the cement mortar is offset, so that the cracking degree of the wall body is reduced.
However, on one hand, cracks are inevitably formed at the joints of the brick wall and the concrete interface, and although the cracks generated during drying and shrinkage of the plastering layer can be reduced by adopting the method of pasting the anti-crack net sheets, the cracks can have great influence on the plastering layer once the cracks develop, the crack can mostly exceed the action range which can be borne by the anti-crack net sheets, and the problems are particularly prominent at the outer wall, so that the anti-crack construction method of the plastering layer is provided for different interface joints of the building, particularly the outer wall.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the construction method for preventing cracks of the plastering layer on different interfaces of the outer wall of the building, which has the effect of improving the crack resistance of the plastering layer on different interfaces of the outer wall of the building.
The above object of the present invention is achieved by the following technical solutions: a crack-resistant construction method for plastering layers on different interfaces of an external wall of a building comprises the following steps:
cleaning the surfaces of a brick wall and concrete, forming a concave straight groove at the joint of the brick wall and the concrete, cleaning the straight groove, and fully wetting the surfaces of the brick wall and the concrete;
step two, pasting a first layer of anti-cracking net after the outer wall treated in the step one is dried, lapping the first layer of anti-cracking net at the joint of the brick wall and the concrete along the straight groove as the center, and meanwhile laying the first layer of anti-cracking net into the straight groove and attaching the first layer of anti-cracking net to the bottom of the groove;
filling the straight groove with an elastic filling agent;
step four, performing first-layer plastering layer construction, and completely covering the first-layer anti-cracking net;
and fifthly, pasting a second anti-crack net after the first plastering layer is finished, erecting and constructing the second plastering layer, and completely covering the second anti-crack net on the brick wall and the concrete.
By adopting the technical scheme, the straight groove is formed, the first layer of anti-cracking net is attached to the straight groove, and then the elastic filling agent is filled, so that on one hand, the anti-cracking performance of cracks formed by contacting the brick wall and concrete can be improved, on the other hand, a certain extending space can be provided, and the generation of cracks on the outer surface can be effectively reduced.
The present invention in a preferred example may be further configured to: and the first anti-cracking net is an anti-rust steel wire net, when the first anti-cracking net is pasted in the second step, a point-shaped mortar layer is firstly sprayed on the outer wall, the first anti-cracking net is pasted after the point-shaped mortar layer is dried and hard, the first anti-cracking net is painted with an adhesive during pasting to fix and relax the first anti-cracking net, and galling treatment is carried out on the surface of the adhesive after construction is completed.
Through adopting above-mentioned technical scheme, the roughness when the construction of carrying out the punctiform mortar layer earlier can increase the operation of plastering layer is favorable to the adhesion performance of plastering layer and wall body, adopts rust-resistant wire net can very big promotion anti-cracking performance, carries out the napping processing with fixed the bonding back of rust-resistant wire net with the adhesive earlier simultaneously, because the bonding performance of adhesive is greater than the plastering mortar far away, can fix rust-resistant wire net on the wall body in advance, can be good when follow-up plastering again cover rust-resistant wire net.
The present invention in a preferred example may be further configured to: the adhesive is fireproof protection slurry, the first layer of anti-cracking net is fully paved on the building outer wall, a lap joint section exists between every two adjacent first layers of anti-cracking nets, and the adhesive is coated on the lap joint section.
By adopting the technical scheme, the fireproof protection slurry has good bonding capacity on one hand, can bond the antirust steel wire mesh on the wall body, and can also play a good fireproof effect.
The present invention in a preferred example may be further configured to: the second layer of anti-crack net is an alkali-resistant glass fiber net; the elastic filler is sealing ointment.
By adopting the technical scheme, the alkali-resistant glass fiber net is light and has strong crack resistance, the alkali-resistant glass fiber net is paved and attached to the shallow surface of the plastering layer as a second layer to bring a good crack resistance effect for the plastering layer, and the elastic filling agent is sealing factice which can fully fill the joint of a brick wall and concrete on the one hand and can provide good waterproof performance on the other hand, so that the development of the joint can be inhibited.
The present invention in a preferred example may be further configured to: and after the step five is finished, performing waterproof treatment on the brick wall and the outer wall body of the concrete, wherein the waterproof treatment of the wall body comprises coating of a coating waterproof layer and posting of a coiled material waterproof layer.
The present invention in a preferred example may be further configured to: the coating waterproof layer is made of single-component polyurethane waterproof coating, the thickness of the coating waterproof layer is 1.5mm, the width of the coating waterproof layer is 300mm-500mm, and the coating waterproof layer is arranged in a manner of being centrosymmetric around a joint of a brick wall and concrete; the waterproof layer of the coiled material is self-adhesive waterproof coiled material, the thickness of the waterproof layer of the coiled material is 1.5mm, the width of the waterproof layer of the coiled material is 300mm-500mm, and the waterproof layer of the coiled material is arranged by taking a joint of a brick wall and concrete as central symmetry.
By adopting the technical scheme, the waterproof performance of the joint can be obviously improved by arranging the coating waterproof layer and the coiled material waterproof layer on the building outer wall, and the sealing ointment is matched to endow the structure with great water seepage resistance, so that the structure is further matched with the two anti-crack net sheets to endow the joint of the outer wall with good anti-seepage and anti-crack performance.
The present invention in a preferred example may be further configured to: the level sets up the multichannel and draws the wall muscle in the brick wall, just draw the concrete part fixed connection of at least one end and the outer wall of wall muscle.
Through adopting above-mentioned technical scheme, set up the connection performance and the wholeness between promotion wall body that draws the wall muscle can be good and the concrete structure.
In summary, the invention includes at least one of the following beneficial technical effects:
1. the straight grooves are formed, the first layer of anti-cracking net is attached to the straight grooves, and then the elastic filling agent is filled, so that on one hand, the anti-cracking performance of cracks formed by contacting the brick wall and concrete can be improved, on the other hand, a certain extending space can be provided, and the generation of cracks on the outer surface can be effectively reduced;
2. the mode of fixing in advance is carried out through fire prevention protection thick liquids when rust-resistant steel wire net is puted up, can ensure the docile and the stability that rust-resistant steel wire net was puted up as far as possible, improves the whole quality that presents of plastering layer.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the invention discloses a crack-resistant construction method for plastering layers on different interfaces of an external wall of a building, which comprises the following steps:
cleaning the brick wall and the concrete surface, simply cleaning the surface of the wall body by using a broom, then forming a concave straight groove at the joint of the brick wall and the concrete, forming grooves on the inner side and the outer side of the wall, wherein the width of the straight groove is 3-5cm, one half of the straight groove is formed in the concrete surface, the other half of the straight groove is formed in the brick wall, the wall body cannot be disturbed during groove forming, the depth is 2-3cm, after groove forming, cleaning the straight groove, washing the straight groove with water together with the brick wall and the concrete surface, fully wetting, standing for about one day, and standing for drying.
And step two, pasting a first layer of anti-cracking net after the outer wall treated in the step one is dried, lapping the first layer of anti-cracking net at the joint of the brick wall and the concrete along the straight groove as the center, and meanwhile, paving the first layer of anti-cracking net into the straight groove and attaching the first layer of anti-cracking net to the bottom of the groove. The first layer of anti-cracking net is an anti-rust steel wire net, when the first layer of anti-cracking net is pasted, a point-shaped mortar layer is firstly sprayed on the outer wall, and the first layer of anti-cracking net is pasted after the point-shaped mortar layer is dried and hard. The point mortar layer can be half of mortar, the strength is slightly higher than that of plastering mortar, the point mortar layer is stirred on site during spraying, and the mortar is directly sprayed on the wall by a spraying machine to form multi-point mortar which is uniformly distributed.
And after the point-like mortar layer is dried and hard, pasting an antirust steel wire mesh, unfolding the antirust steel wire mesh and pasting the antirust steel wire mesh on the wall body during pasting, painting an adhesive to fix and relax the first layer of anti-cracking mesh, and performing galling treatment on the surface of the adhesive after the construction is finished. The adhesive is fireproof protective slurry, a first layer of anti-cracking net is fully paved on the outer wall of the building, a lap joint section exists between adjacent first layers of anti-cracking nets, and the adhesive is coated on the lap joint section.
The second layer of anti-cracking net is an alkali-resistant glass fiber net, when the anti-cracking of the wall body is processed, the anti-rust steel wire net is fully paved and hung, and then the fireproof steel wire net is paved and attached through fireproof protection slurry, so that on one hand, the fireproof steel wire net is well fixed on the wall surface through the fireproof protection slurry, and on the other hand, the fireproof steel wire net can absorb the shrinkage stress of the wall body, and cracks generated on the fireproof protection slurry or the outer surface layer coating are reduced. And the alkali-resistant glass fiber net arranged in the plastering layer can also offset the shrinkage stress in most of the mortar surface layer, thereby reducing the cracks generated on the wall surface.
And step three, filling the straight groove with an elastic filling agent, wherein the elastic filling agent is sealing ointment, the filling amount of the sealing ointment is based on slow filling of the straight groove, or slightly less, but before filling the sealing ointment, the antirust steel wire mesh is ensured to be attached to the straight groove, and the antirust steel wire mesh can be fixed in the straight groove by using a steel nail if necessary, so that the antirust steel wire mesh is ensured to be attached to three side surfaces of the straight groove as much as possible.
And step four, after the sealing ointment is filled, performing first plastering layer construction after the sealing ointment is solidified and formed, and completely covering the first anti-cracking net.
And fifthly, pasting a second anti-crack net after the first plastering layer is finished, erecting and constructing the second plastering layer, and completely covering the second anti-crack net on the brick wall and the concrete. After finishing, performing waterproof treatment on the brick wall and the outer wall body of concrete, wherein the waterproof treatment of the wall body comprises the coating of a paint waterproof layer and the pasting of a coiled material waterproof layer, the paint waterproof layer adopts single-component polyurethane waterproof paint, the thickness of the paint waterproof layer is 1.5mm, the width of the paint waterproof layer is 300mm-500mm, and the paint waterproof layer is symmetrically arranged by taking the joint of the brick wall and the concrete as a center; the waterproof layer of the coiled material is self-adhesive waterproof coiled material, the thickness of the waterproof layer of the coiled material is 1.5mm, the width of the waterproof layer of the coiled material is 300mm-500mm, and the waterproof layer of the coiled material is arranged in a symmetrical mode by taking a joint of a brick wall and concrete as a center.
Meanwhile, when building brick walls, firstly, the wall-pulling ribs of the wall body are pre-embedded on the concrete building, the wall-pulling ribs and the reinforcing steel bars inside the concrete are integrally welded and pre-embedded, and are fixedly connected during the subsequent concrete pouring, or the form of the subsequent diameter is adopted. The wall-pulling reinforcement is provided with a plurality of channels which are horizontally arranged, the height direction of the wall body is horizontally arranged, the distance is 500mm, the channel is arranged at the full length, the wall body is built from bottom to top during building, the wall-pulling reinforcement is built into the wall body, the building requirement of the wall body is met, and the building height of every day is controlled within the range allowed by the standard.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (7)
1. A crack-resistant construction method for plastering layers on different interfaces of an external wall of a building is characterized by comprising the following steps:
cleaning the surfaces of a brick wall and concrete, forming a concave straight groove at the joint of the brick wall and the concrete, cleaning the straight groove, and fully wetting the surfaces of the brick wall and the concrete;
step two, pasting a first layer of anti-cracking net after the outer wall treated in the step one is dried, lapping the first layer of anti-cracking net at the joint of the brick wall and the concrete along the straight groove as the center, and meanwhile laying the first layer of anti-cracking net into the straight groove and attaching the first layer of anti-cracking net to the bottom of the groove;
filling the straight groove with an elastic filling agent;
step four, performing first-layer plastering layer construction, and completely covering the first-layer anti-cracking net;
and fifthly, pasting a second anti-crack net after the first plastering layer is finished, erecting and constructing the second plastering layer, and completely covering the second anti-crack net on the brick wall and the concrete.
2. The method for constructing the crack-resistant plastering layer on the different interfaces of the external wall of the building according to claim 1, wherein the method comprises the following steps: and the first anti-cracking net is an anti-rust steel wire net, when the first anti-cracking net is pasted in the second step, a point-shaped mortar layer is firstly sprayed on the outer wall, the first anti-cracking net is pasted after the point-shaped mortar layer is dried and hard, the first anti-cracking net is painted with an adhesive during pasting to fix and relax the first anti-cracking net, and galling treatment is carried out on the surface of the adhesive after construction is completed.
3. The method for constructing the crack-resistant plastering layer on the different interfaces of the external wall of the building according to claim 2, wherein the method comprises the following steps: the adhesive is fireproof protection slurry, the first layer of anti-cracking net is fully paved on the building outer wall, a lap joint section exists between every two adjacent first layers of anti-cracking nets, and the adhesive is coated on the lap joint section.
4. The method for constructing the crack-resistant plastering layer on the different interfaces of the external wall of the building according to claim 2, wherein the method comprises the following steps: the second layer of anti-crack net is an alkali-resistant glass fiber net; the elastic filler is sealing ointment.
5. The method for constructing the crack-resistant plastering layer on the different interfaces of the external wall of the building according to claim 2, wherein the method comprises the following steps: and after the step five is finished, performing waterproof treatment on the brick wall and the outer wall body of the concrete, wherein the waterproof treatment of the wall body comprises coating of a coating waterproof layer and posting of a coiled material waterproof layer.
6. The method for constructing the crack-resistant plastering layer on the different interfaces of the external wall of the building according to claim 5, wherein the method comprises the following steps: the coating waterproof layer is made of single-component polyurethane waterproof coating, the thickness of the coating waterproof layer is 1.5mm, the width of the coating waterproof layer is 300mm-500mm, and the coating waterproof layer is arranged in a manner of being centrosymmetric around a joint of a brick wall and concrete; the waterproof layer of the coiled material is self-adhesive waterproof coiled material, the thickness of the waterproof layer of the coiled material is 1.5mm, the width of the waterproof layer of the coiled material is 300mm-500mm, and the waterproof layer of the coiled material is arranged by taking a joint of a brick wall and concrete as central symmetry.
7. The method for constructing the crack-resistant plastering layer on the different interfaces of the external wall of the building according to claim 1, wherein the method comprises the following steps: the level sets up the multichannel and draws the wall muscle in the brick wall, just draw the concrete part fixed connection of at least one end and the outer wall of wall muscle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911360039.3A CN111042350A (en) | 2019-12-25 | 2019-12-25 | Anti-crack construction method for plastering layers on different interfaces of building outer wall |
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| CN201911360039.3A CN111042350A (en) | 2019-12-25 | 2019-12-25 | Anti-crack construction method for plastering layers on different interfaces of building outer wall |
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Cited By (3)
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| CN112502391A (en) * | 2020-11-20 | 2021-03-16 | 中铁建工集团有限公司 | Crack-resistant construction process based on foamed concrete |
| CN113550451A (en) * | 2021-07-24 | 2021-10-26 | 南京坤佳防水防腐保温工程有限公司 | Waterproof construction method for building outer wall |
| CN116731550A (en) * | 2022-03-04 | 2023-09-12 | 庄继昌 | Multifunctional wall material |
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Application publication date: 20200421 |
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| RJ01 | Rejection of invention patent application after publication |