CN115650668A - Construction method for controlling concrete cracks of building wall - Google Patents
Construction method for controlling concrete cracks of building wall Download PDFInfo
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- CN115650668A CN115650668A CN202211328332.3A CN202211328332A CN115650668A CN 115650668 A CN115650668 A CN 115650668A CN 202211328332 A CN202211328332 A CN 202211328332A CN 115650668 A CN115650668 A CN 115650668A
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Abstract
The invention discloses a construction method for controlling concrete cracks of a building wall, which comprises the following steps: weighing construction raw materials, mixing and preparing concrete, filling and pouring a wall body into a mold, maintaining a wall body blank and performing after-treatment on the wall body; the waterproof concrete is prepared by taking the mixed aggregate, the cement, the water, the additive solution and the externally-doped mixed material as raw materials and used for pouring the concrete wall body, so that the constructed building wall body has good structural water tightness and is prevented from being leaked by rainwater, the influence of structural expansion on the wall body is reduced by prefabricating wall body templates in blocks and arranging separation seams when the building wall body is poured, then the moisture evaporation of the building wall body is prevented by the triple curing process of a wall body blank so as to reduce the drying shrinkage of the concrete structure, and finally, the temperature deformation of the building wall body is reduced by constructing the heat insulation layer on the poured and molded concrete wall body, so that the generation of construction cracks is effectively controlled, and the overall quality of the concrete building wall body is ensured.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a construction method for controlling concrete cracks of a building wall.
Background
Concrete is a heterogeneous brittle material formed by mixing gravel aggregate, cement, water and other additional materials, a concrete structure is usually inevitably cracked in engineering application due to the large brittleness, the cracking causes the water tightness reduction and leakage of the concrete structure, the service life of the engineering is influenced, and even the concrete structure cannot be normally used, which is a common problem in building construction, the generation of cracks in the concrete structure mainly has two main reasons, one is caused by deformation, and comprises contraction, expansion, uneven settlement and the like caused by temperature and humidity changes, and the other is caused by external load direct stress.
Along with the progress of house improvement and house commercialization in China, the requirements of people on living environment and building quality are continuously improved, the control requirements on the wall body of the concrete building are stricter, because the quality of the building is poor, disputes or officials related to wall body cracks, leakage and the like are more and more, cracks of the wall body of the concrete building become a very visual, sensitive and primary quality standard for residents to judge the safety of the building, and a set of good construction method for the wall body of the concrete building can effectively improve the generation condition of the cracks of the wall body, so that the construction method for the wall body of the concrete building is one of the factors for determining whether the wall body of the concrete building cracks.
The traditional concrete building wall construction method has the advantages that the flow is fixed, the operation is complex, the generation of construction cracks cannot be effectively controlled, cracks are easy to generate on the wall surface after the concrete wall construction is finished, the quality of the concrete wall is influenced, the normal use is influenced, and no mature construction experience exists for controlling the generation of the concrete building wall cracks at present, so that the invention provides the building wall concrete crack control construction method to solve the problems in the prior art.
Disclosure of Invention
Aiming at the problems, the invention aims to provide a construction method for controlling concrete cracks of a building wall, which solves the problems that the traditional construction method for the concrete building wall is mostly fixed in flow, complex in operation and easy to generate cracks on the wall surface after the construction of the concrete wall is finished, so that the quality of the concrete wall is influenced.
In order to achieve the purpose of the invention, the invention is realized by the following technical scheme: a construction method for controlling concrete cracks of a building wall comprises the following steps:
the method comprises the following steps: weighing the following construction raw materials in parts by weight according to actual construction requirements: 600-800 parts of mixed aggregate, 300-400 parts of cement, 150-250 parts of water, 30-40 parts of additive solution and 100-120 parts of admixture, wherein the mixed aggregate, the cement and the admixture are weighed and then placed in a dry and ventilated place for temporary storage, and the additive solution is weighed and then placed in a sealed container for temporary storage for later use;
step two: firstly adding the weighed cement and water into a concrete stirring barrel for mixing and stirring, then uniformly adding the weighed mixed aggregate into the concrete stirring barrel after stirring, continuously mixing and stirring, simultaneously adding the weighed additive solution and the externally-doped mixed material into the concrete stirring barrel for final stirring after stirring, and obtaining waterproof concrete slurry after stirring;
step three: firstly, prefabricating wall body templates in blocks according to construction requirements, then erecting the prefabricated wall body templates according to actual construction requirements, then pouring prepared waterproof concrete slurry on the erected wall body templates layer by layer, reserving separation seams between the wall body templates, finally caulking the separation seams by adopting elastic waterproof factice, and removing a mold after the waterproof concrete slurry is cured and formed to obtain a concrete wall body blank;
step four: after the concrete wall blank is formed, firstly carrying out water spraying maintenance on the surface of the concrete wall blank, then coating a curing agent on the surface of the concrete wall blank which is subjected to water spraying maintenance, then sticking a plastic film on the surface of the concrete wall blank, and removing the plastic film after the curing agent is cured to finish the maintenance work of the concrete wall blank;
step five: firstly, cleaning a base layer of a concrete wall blank after the curing is finished, then adhering base layer gridding cloth on the wall surface of the concrete wall blank and coating interface mortar, coating hollow microsphere thermal insulation mortar on the wall surface of the concrete wall blank after the interface mortar is cured, then fixing surface layer gridding cloth on the wall surface of the concrete wall blank, then coating anti-crack mortar on the outer surface of the surface layer gridding cloth to form a thermal insulation layer, and finishing the concrete wall crack control construction after the anti-crack mortar is cured.
The further improvement lies in that: in the first step, the mixed aggregate is prepared by mixing coarse aggregate and fine aggregate according to a mixing mass ratio of 2:1, the coarse aggregate is selected from pebble particles or broken stone particles, and the fine aggregate is selected from natural sand or artificial sand.
The further improvement lies in that: in the first step, the additive solution comprises a water-based emulsion, liquid epoxy resin, a water reducing agent, an SF waterproof agent and an antifoaming agent, wherein the mass ratio of the water-based emulsion to the liquid epoxy resin to the water reducing agent to the SF waterproof agent to the antifoaming agent is 3:2:1:0.5:0.5.
the further improvement lies in that: in the first step, the externally-doped mixed material is prepared by mixing mineral powder, silica fume, fly ash, nano calcium carbonate and nano silica fibers, wherein the mixing mass ratio of the mineral powder, the silica fume, the fly ash, the nano calcium carbonate and the nano silica fibers is 2:1:1:1:0.5.
the further improvement lies in that: in the first step, a moisture-proof tray is paved on the ground in advance when the mixed aggregate, the cement and the admixture are stored, then the mixed aggregate, the cement and the admixture are stacked on the moisture-proof tray, and waterproof cloth is covered on the mixed aggregate, the cement and the admixture.
The further improvement lies in that: in the second step, the stirring speed of the concrete stirring barrel on cement and water is 1400-1600 r/m, the stirring time is 45 minutes, the stirring speed of the concrete stirring barrel on mixed aggregate is 1900-2100 r/m, the stirring time is 60 minutes, the stirring speed of the concrete stirring barrel on admixture solution and admixture materials is 2400-2600 r/m, and the stirring time is 30 minutes.
The further improvement lies in that: in the third step, horizontal ribs are arranged at the positions easy to crack when the prefabricated wall formwork is erected, the horizontal ribs are smooth round steel ribs with the diameter of 6-8 mm, the gap width of the separation seams is 20-30 mm, and the elastic waterproof ointment is selected from PVC (polyvinyl chloride) ointment.
The further improvement lies in that: and in the fourth step, when the concrete wall body blank is subjected to water spraying maintenance, the temperature difference between the water spraying temperature and the surface of the concrete wall body blank is controlled to be less than 15 ℃, the maintenance agent is directly coated on the wall surface by adopting a roller in a rolling way, and condensed water drops are kept in the film after the plastic film is pasted.
The further improvement is that: and fifthly, when the base layer is cleaned, cleaning up the residual ash on the blank of the concrete wall body, repairing the blank of the concrete wall body, filling each opening densely, enabling the surface flatness deviation of the blank of the concrete wall body to be 3-5 mm, polishing the protruding wall surface if the deviation exceeds the deviation, and repairing the sunken part.
The further improvement is that: and in the fifth step, the base layer mesh cloth is adhered to the wall surface of the concrete wall blank through a binder, the surface layer mesh cloth is fixed on the wall surface of the concrete wall blank through an anchoring part, the interface mortar, the hollow microsphere thermal insulation mortar and the anti-crack mortar are stirred once every 5 minutes before coating, and no fine particles or powder aggregates exist in the mortar.
The beneficial effects of the invention are as follows: the waterproof concrete is prepared by taking the mixed aggregate, the cement, the water, the additive solution and the admixture as raw materials and is used for pouring a concrete wall body, so that the constructed building wall body has good structural water tightness and is prevented from being leaked by rainwater, the frequency of cracks generated in the concrete of the wall body is reduced to a certain extent, the influence of structural expansion on the wall body is reduced by prefabricating wall body templates in blocks and arranging separation seams when the building wall body is poured, the cracks are further prevented from being generated, the evaporation of water in the building wall body is prevented by the triple maintenance process of a wall body blank, the drying shrinkage of the concrete structure is reduced, and finally, a heat insulation layer is built on the poured and formed concrete wall body, so that the temperature deformation of the building wall body is reduced, the generation of the construction cracks is effectively controlled, the integral quality of the concrete building wall body is ensured, and in addition, the construction processes are scientific and precise, are convenient to operate and are worthy of popularization.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic flow chart of the construction method of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious 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 obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
Example one
Referring to fig. 1, the embodiment provides a construction method for controlling concrete cracks of a building wall, which includes the following steps:
step one, weighing construction raw materials
Weighing 600 parts of mixed aggregate, 300 parts of cement, 150 parts of water, 30 parts of additive solution and 100 parts of admixture according to the following construction raw materials in parts by weight, wherein the mixed aggregate is prepared by mixing a coarse aggregate and a fine aggregate according to a mixing mass ratio of 2:1, coarse aggregate is pebble particles, fine aggregate is natural sand, an additive solution comprises a water-based emulsion, liquid epoxy resin, a water reducing agent, an SF waterproof agent and an antifoaming agent, and the mass ratio of the water-based emulsion to the liquid epoxy resin to the water reducing agent to the SF waterproof agent to the antifoaming agent is 3:2:1:0.5:0.5, the externally-doped mixed material is prepared by mixing mineral powder, silica fume, fly ash, nano calcium carbonate and nano silica fibers, wherein the mixing mass ratio of the mineral powder, the silica fume, the fly ash, the nano calcium carbonate and the nano silica fibers is 2:1:1:1:0.5, placing the weighed mixed aggregate, cement and admixture in a dry and ventilated place for temporary storage, laying a damp-proof tray on the ground in advance during storage, stacking the mixed aggregate, cement and admixture on the damp-proof tray, covering a waterproof cloth on the mixed aggregate, cement and admixture, and placing the weighed admixture solution in a sealed container for temporary storage for later use;
step two, concrete mixing preparation
Firstly, adding weighed cement and water into a concrete stirring barrel for mixing and stirring, wherein the stirring speed is 1400r/m, the stirring time is 45 minutes, after the stirring is finished, uniformly adding weighed mixed aggregate into the concrete stirring barrel for continuously mixing and stirring, the stirring speed is 1900r/m, the stirring time is 60 minutes, after the stirring is finished, adding weighed additive solution and admixture into the concrete stirring barrel simultaneously for final stirring, the stirring speed is 2400r/m, the stirring time is 30 minutes, after the stirring is finished, waterproof concrete slurry is obtained, and the waterproof concrete is prepared by taking the mixed aggregate, the cement, the water, the additive solution and the admixture as raw materials and used for pouring a concrete wall body, so that the constructed building wall body has good structural water tightness and is prevented from rainwater leakage, and the frequency of cracks generated in the wall body concrete is reduced to a certain degree;
step three, wall body formwork pouring
The method comprises the steps of firstly, prefabricating wall formworks in blocks according to construction needs, then erecting the prefabricated wall formworks according to actual construction needs, arranging horizontal ribs at the positions easy to crack when erecting the prefabricated wall formworks, wherein the horizontal ribs adopt smooth steel ribs with the diameter of 6mm, then pouring prepared waterproof concrete slurry on the erected wall formworks in a layered mode, reserving separation seams between the wall formworks, the gap width of each separation seam is 20mm, elastic waterproof factice is selected from PVC factice, finally, the separation seams are caulked by adopting the elastic waterproof factice, and after the waterproof concrete slurry is cured and formed, removing the formwork to obtain a concrete wall blank;
step four, maintaining the wall body blank
After the concrete wall blank is formed, firstly carrying out water spraying maintenance on the surface of the concrete wall blank, controlling the temperature difference between the water spraying temperature and the surface of the concrete wall blank to be less than 15 ℃, then directly rolling and coating a curing agent on the surface of the concrete wall blank after the water spraying maintenance by using a roller, then pasting a plastic film on the surface of the concrete wall blank, keeping condensed water beads in the film, removing the plastic film after the curing agent is cured, completing the maintenance work of the concrete wall blank, and preventing the water evaporation of the building wall through the triple maintenance process of the wall blank so as to reduce the drying shrinkage of the concrete structure;
step five, after-treatment of wall forming
Cleaning up residual ash on a concrete wall blank after the curing is finished, repairing an empty drum part and filling each hole densely, so that the surface flatness deviation of the concrete wall blank is 3mm, polishing a protruded wall surface if the deviation exceeds the deviation, and repairing a sunken part, then pasting a base layer gridding cloth and coating interface mortar on the wall surface of the concrete wall blank through a binder, coating hollow microsphere thermal insulation mortar on the wall surface of the concrete wall blank after the interface mortar is cured, fixing a surface layer gridding cloth on the wall surface of the concrete wall blank through an anchoring part, coating anti-crack mortar on the outer surface of the surface layer gridding cloth to form a thermal insulation layer, and finishing the concrete wall crack control construction after the anti-crack mortar is cured, wherein the interface mortar, the hollow microsphere thermal insulation mortar and the anti-crack mortar are stirred once every 5 minutes before coating, no fine particles and no powder lumps are contained in the mortar, and the thermal insulation layer is constructed on the concrete wall after the pouring forming, so that the temperature deformation of the building wall is reduced, the generation of cracks is effectively controlled, and the overall construction quality of the concrete building is ensured.
Example two
Referring to fig. 1, the embodiment provides a construction method for controlling concrete cracks of a building wall, which includes the following steps:
step one, weighing construction raw materials
Weighing 800 parts of mixed aggregate, 400 parts of cement, 250 parts of water, 40 parts of additive solution and 120 parts of admixture according to the following construction raw materials in parts by weight, wherein the mixed aggregate is prepared by mixing coarse aggregate and fine aggregate according to a mixing mass ratio of 2:1, coarse aggregate is broken stone particles, fine aggregate is artificial sand, the additive solution comprises water-based emulsion, liquid epoxy resin, a water reducing agent, an SF waterproof agent and an antifoaming agent, and the mass ratio of the water-based emulsion to the liquid epoxy resin to the water reducing agent to the SF waterproof agent to the antifoaming agent is 3:2:1:0.5:0.5, the externally-doped mixed material is prepared by mixing mineral powder, silica fume, fly ash, nano calcium carbonate and nano silica fibers, wherein the mixing mass ratio of the mineral powder to the silica fume to the fly ash to the nano calcium carbonate to the nano silica fibers is 2:1:1:1:0.5, placing the weighed mixed aggregate, cement and admixture in a dry and ventilated place for temporary storage, laying a damp-proof tray on the ground in advance during storage, stacking the mixed aggregate, cement and admixture on the damp-proof tray, covering a waterproof cloth on the mixed aggregate, cement and admixture, and placing the weighed admixture solution in a sealed container for temporary storage for later use;
step two, concrete mixing preparation
Firstly, adding weighed cement and water into a concrete stirring barrel for mixing and stirring, wherein the stirring speed is 1600r/m, the stirring time is 45 minutes, after the stirring is finished, uniformly adding weighed mixed aggregate into the concrete stirring barrel for continuously mixing and stirring, the stirring speed is 2100r/m, the stirring time is 60 minutes, after the stirring is finished, adding weighed additive solution and admixture into the concrete stirring barrel simultaneously for final stirring, the stirring speed is 2600r/m, the stirring time is 30 minutes, after the stirring is finished, waterproof concrete slurry is obtained, and the mixed aggregate, the cement, the water, the additive solution and the admixture are used as raw materials to prepare the waterproof concrete for pouring a concrete wall body, so that the constructed building wall body has good structural water tightness and is prevented from being leaked by rainwater, and the frequency of cracks generated in the wall body concrete is reduced to a certain degree;
step three, wall body die-filling pouring
The method comprises the steps of firstly, prefabricating wall formworks in blocks according to construction needs, then erecting the prefabricated wall formworks according to actual construction needs, arranging horizontal ribs at the positions easy to crack when erecting the prefabricated wall formworks, wherein the horizontal ribs adopt smooth steel ribs with the diameter of 8mm, then pouring prepared waterproof concrete slurry on the erected wall formworks in a layered mode, reserving separation seams between the wall formworks, the gap width of each separation seam is 30mm, elastic waterproof factice is selected from PVC factice, finally, the separation seams are caulked by adopting the elastic waterproof factice, and after the waterproof concrete slurry is cured and formed, removing the formwork to obtain a concrete wall blank;
step four, maintaining the wall blank
After the concrete wall blank is formed, firstly carrying out water spraying maintenance on the surface of the concrete wall blank, controlling the temperature difference between the water spraying temperature and the surface of the concrete wall blank to be less than 15 ℃, then directly rolling and coating a curing agent on the surface of the concrete wall blank which is subjected to water spraying maintenance by adopting a roller, then pasting a plastic film on the surface of the concrete wall blank, keeping condensed water beads in the film, dismantling the plastic film after the curing agent is cured, completing the maintenance work of the concrete wall blank, and preventing the water evaporation of a building wall through the triple maintenance process of the wall blank so as to reduce the drying shrinkage of the concrete structure;
step five, after-treatment of wall forming
Cleaning up residual ash on a concrete wall blank after the curing is finished, repairing an empty drum part and filling each hole densely, so that the surface flatness deviation of the concrete wall blank is 5mm, polishing a protruded wall surface if the deviation exceeds the deviation, and repairing a sunken part, then pasting a base layer gridding cloth and coating interface mortar on the wall surface of the concrete wall blank through a binder, coating hollow microsphere thermal insulation mortar on the wall surface of the concrete wall blank after the interface mortar is cured, fixing a surface layer gridding cloth on the wall surface of the concrete wall blank through an anchoring part, coating anti-crack mortar on the outer surface of the surface layer gridding cloth to form a thermal insulation layer, and finishing the concrete wall crack control construction after the anti-crack mortar is cured, wherein the interface mortar, the hollow microsphere thermal insulation mortar and the anti-crack mortar are stirred once every 5 minutes before coating, no fine particles and no powder lumps are contained in the mortar, and the thermal insulation layer is constructed on the concrete wall after the pouring forming, so that the temperature deformation of the building wall is reduced, the generation of cracks is effectively controlled, and the overall construction quality of the concrete building is ensured.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A construction method for controlling concrete cracks of a building wall is characterized by comprising the following steps:
the method comprises the following steps: weighing the following construction raw materials in parts by weight according to actual construction requirements: 600-800 parts of mixed aggregate, 300-400 parts of cement, 150-250 parts of water, 30-40 parts of additive solution and 100-120 parts of admixture, wherein the mixed aggregate, the cement and the admixture are weighed and then placed in a dry and ventilated place for temporary storage, and the additive solution is weighed and then placed in a sealed container for temporary storage for later use;
step two: firstly adding the weighed cement and water into a concrete stirring barrel for mixing and stirring, then uniformly adding the weighed mixed aggregate into the concrete stirring barrel after stirring, continuously mixing and stirring, simultaneously adding the weighed additive solution and the externally-doped mixed material into the concrete stirring barrel for final stirring after stirring, and obtaining waterproof concrete slurry after stirring;
step three: firstly, prefabricating wall templates in blocks according to construction needs, erecting the prefabricated wall templates according to actual construction needs, then pouring prepared waterproof concrete slurry on the erected wall templates in a layered mode, reserving separation seams between the wall templates, finally caulking the separation seams by using elastic waterproof factice, and removing a mold after the waterproof concrete slurry is cured and molded to obtain a concrete wall blank;
step four: after the concrete wall blank is formed, firstly carrying out water spraying maintenance on the surface of the concrete wall blank, then coating a maintenance agent on the surface of the concrete wall blank after the water spraying maintenance is finished, then sticking a plastic film on the surface of the concrete wall blank, and removing the plastic film after the maintenance agent is cured to finish the maintenance work of the concrete wall blank;
step five: firstly, cleaning a base layer of a concrete wall blank after the curing is finished, then adhering base layer gridding cloth on the wall surface of the concrete wall blank and coating interface mortar, coating hollow microsphere thermal insulation mortar on the wall surface of the concrete wall blank after the interface mortar is cured, then fixing surface layer gridding cloth on the wall surface of the concrete wall blank, then coating anti-crack mortar on the outer surface of the surface layer gridding cloth to form a thermal insulation layer, and finishing the concrete wall crack control construction after the anti-crack mortar is cured.
2. The construction method for controlling the concrete cracks of the building wall according to claim 1, wherein: in the first step, the mixed aggregate is prepared by mixing coarse aggregate and fine aggregate according to a mixing mass ratio of 2:1, the coarse aggregate is selected from pebble particles or broken stone particles, and the fine aggregate is selected from natural sand or artificial sand.
3. The construction method for controlling the concrete cracks of the building wall according to claim 1, wherein: in the first step, the additive solution comprises a water-based emulsion, liquid epoxy resin, a water reducing agent, an SF waterproof agent and an antifoaming agent, wherein the mass ratio of the water-based emulsion to the liquid epoxy resin to the water reducing agent to the SF waterproof agent to the antifoaming agent is 3:2:1:0.5:0.5.
4. the construction method for controlling the concrete cracks of the building wall according to claim 1, wherein: in the first step, the externally-doped mixed material is prepared by mixing mineral powder, silica fume, fly ash, nano calcium carbonate and nano silica fibers, wherein the mixing mass ratio of the mineral powder, the silica fume, the fly ash, the nano calcium carbonate and the nano silica fibers is 2:1:1:1:0.5.
5. the construction method for controlling the concrete cracks of the building wall according to claim 1, wherein: in the first step, a moisture-proof tray is paved on the ground in advance when the mixed aggregate, the cement and the admixture are stored, then the mixed aggregate, the cement and the admixture are stacked on the moisture-proof tray, and waterproof cloth covers the mixed aggregate, the cement and the admixture.
6. The construction method for controlling the concrete cracks of the building wall body as claimed in claim 1, wherein: in the second step, the stirring speed of the concrete stirring barrel on cement and water is 1400-1600 r/m, the stirring time is 45 minutes, the stirring speed of the concrete stirring barrel on mixed aggregate is 1900-2100 r/m, the stirring time is 60 minutes, the stirring speed of the concrete stirring barrel on admixture solution and admixture materials is 2400-2600 r/m, and the stirring time is 30 minutes.
7. The construction method for controlling the concrete cracks of the building wall body as claimed in claim 1, wherein: in the third step, horizontal ribs are arranged at the easy-to-crack positions when the prefabricated wall formwork is erected, the horizontal ribs are smooth round ribs with the diameter of 6-8 mm, the width of the gaps of the separation seams is 20-30 mm, and the elastic waterproof ointment is selected from PVC ointment.
8. The construction method for controlling the concrete cracks of the building wall according to claim 1, wherein: and in the fourth step, when the concrete wall body blank is subjected to water spraying maintenance, the temperature difference between the water spraying temperature and the surface of the concrete wall body blank is controlled to be less than 15 ℃, the maintenance agent is directly coated on the wall surface by adopting a roller in a rolling way, and condensed water drops are kept in the film after the plastic film is pasted.
9. The construction method for controlling the concrete cracks of the building wall according to claim 1, wherein: and fifthly, when the base layer is cleaned, cleaning up the residual ash on the blank of the concrete wall body, repairing the blank of the concrete wall body, filling each opening densely, enabling the surface flatness deviation of the blank of the concrete wall body to be 3-5 mm, polishing the protruding wall surface if the deviation exceeds the deviation, and repairing the sunken part.
10. The construction method for controlling the concrete cracks of the building wall according to claim 1, wherein: and in the fifth step, the base layer mesh cloth is adhered to the wall surface of the concrete wall blank through a binder, the surface layer mesh cloth is fixed on the wall surface of the concrete wall blank through an anchoring part, the interface mortar, the hollow microsphere thermal insulation mortar and the anti-crack mortar are stirred once every 5 minutes before coating, and no fine particles or powder aggregates exist in the mortar.
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| JP2005002583A (en) * | 2003-06-10 | 2005-01-06 | Kajima Corp | Construction method of underground impervious wall |
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