CN108612233B - Construction method of cast-in-situ facing clear concrete wall - Google Patents
Construction method of cast-in-situ facing clear concrete wall Download PDFInfo
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- CN108612233B CN108612233B CN201810289005.9A CN201810289005A CN108612233B CN 108612233 B CN108612233 B CN 108612233B CN 201810289005 A CN201810289005 A CN 201810289005A CN 108612233 B CN108612233 B CN 108612233B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/84—Walls made by casting, pouring, or tamping in situ
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Abstract
The invention provides a construction method of a cast-in-place facing fair-faced concrete wall, which comprises the steps of defining a construction area on the ground, preparing a wall framework, preparing a plurality of wall templates, hoisting the wall templates, preparing fair-faced concrete, removing all impurities in the wall framework and the wall templates, pouring cement mortar, pouring the fair-faced concrete into the wall framework for multiple times, vibrating the fair-faced concrete, curing the cast-in-place facing fair-faced concrete wall and removing protective materials Low cost, raw material saving, construction time shortening, environmental pollution reduction and the like.
Description
Technical Field
The invention belongs to the technical field of constructional engineering, and particularly relates to a construction method of a cast-in-place facing clear water concrete wall.
Background
In recent years, with the development of building construction technology, under the strong support of national policies, various novel building materials and building structural members are widely put into mass production and application, gain social opinion, and achieve better economic value. In the construction operation of building walls, a wall structure poured by steel bars and concrete is generally adopted, and the wall structure has the advantages of high construction operation speed, high efficiency, good strength of the wall structure and the like, but because a large amount of common concrete is used, more dust is easily generated during the construction operation, and the environment is polluted, so residents in peripheral areas of a construction site complain about sound lanes. The fair-faced concrete has a simple, fruitless, natural and stable appearance, the inherent thickness and elegance of the fair-faced concrete are incomparable and comparable with those of modern building materials, and the fair-faced concrete is famous and genuine green concrete. With the continuous improvement of environmental protection consciousness of people, natural thought returned to reality is deep into the mind, green buildings become the trend of future development, and the facing fair-faced concrete is increasingly applied to building engineering. In the prior art, if a traditional construction process is still used for building the fair-faced concrete wall, the surface of the wall is inclined, bubbles exist in the wall, the quality of the wall is reduced, and the service life of the wall is influenced.
Disclosure of Invention
In order to solve the technical problems, the invention provides a construction method of a cast-in-place facing fair-faced concrete wall.
The invention is realized by the following technical scheme.
The invention provides a construction method of a cast-in-place facing fair-faced concrete wall, which comprises the following steps:
the method comprises the following steps: defining a construction area: marking a closed annular contour line on the ground as a construction area according to a construction drawing;
step two: preparing a wall framework: laying a plurality of vertical steel bars which are vertically arranged on the ground in the construction area of the step one, then arranging a plurality of transverse steel bars along the horizontal direction, and binding the crossed joint of the vertical steel bars and the transverse steel bars together by using binding wires, so that the vertical steel bars, the transverse steel bars and the binding wires are connected to form a wall framework;
step three: preparing a plurality of wall templates: preparing at least two rectangular panels, installing a plurality of vertical secondary ridges on the panels in parallel at certain intervals along the length direction of the panels, arranging a plurality of transverse back ridges on the vertical secondary ridges in parallel at certain intervals along the width direction of the panels, and welding the crossed joint of the vertical secondary ridges and the transverse back ridges to connect the panels, the vertical secondary ridges and the transverse back ridges together to form a wall body template;
step four: hoisting the wall template: respectively hoisting the prepared wall body templates in the step three, vertically arranging the wall body templates on two sides of the wall body framework in the step two, enabling the panels to be tightly attached to two opposite side surfaces of the wall body framework, and connecting the wall body framework and the wall body templates on the two sides together by using a wall penetrating screw rod;
step five: preparing bare concrete: putting a proper amount of cement, stones, sand, water, admixture and additive into a stirrer, and uniformly stirring and mixing to obtain the fair-faced concrete;
step six: removing impurities: removing all impurities in the wall framework and the wall formwork;
step seven: pouring cement mortar: pouring cement mortar with a proper thickness into the wall body framework, and obtaining a cement mortar layer at the bottom of the wall body framework;
step eight: pouring bare concrete: pouring the prepared fair-faced concrete obtained in the step five into the wall body framework to obtain a pouring layer in the wall body framework;
step nine: vibrating the bare concrete: vibrating the pouring layer in the step eight by using a vibrating rod, and discharging air bubbles in the fair-faced concrete to ensure that the fair-faced concrete is combined compactly;
step ten: repeating the step eight to the step nine for a plurality of times, so that the height of the cement mortar layer and all the pouring layers which are overlapped together is consistent with the mark of the construction drawing in the step one, and the cement mortar layer and all the pouring layers which are overlapped together form a cast-in-situ facing fair-faced concrete wall body with the wall framework;
step eleven: maintaining the cast-in-place finish concrete wall: and (3) dismantling the wall templates on the two sides of the cast-in-place finish concrete wall body in the step ten, coating the wall templates and the outer surface of the cast-in-place finish concrete wall body with a protective material, maintaining the cast-in-place finish concrete wall body for a plurality of days, and then removing the protective material.
And step three, the vertical secondary ridges are made of U-shaped section steel beams.
And step three, the transverse back edges are made of punching cold-bending C-shaped steel.
And step three, connecting the vertical secondary ridges with the panel by bolts with nominal diameters not less than 16 mm.
Fourthly, the nominal diameter of the wall-penetrating screw is not less than 16 mm.
Step four, the step of hoisting the wall body template further comprises the following steps:
step 1: sleeving a PVC sleeve on the wall-penetrating screw rod, and arranging the PVC sleeve in the wall framework;
step 2: nylon plugs are sleeved and plugged at two ends of the PVC sleeve;
and step 3: and a sponge sealing ring is clamped between the nylon plug and the panel.
And fourthly, the step of hoisting the wall body formwork further comprises the step of sticking a sealing strip at the joint of any two adjacent wall body formworks.
And step nine, the vibrating rod penetrates through at least one pouring layer and extends into the pouring layer adjacent to the lower side of the pouring layer by 50-100 mm.
The step of maintaining the cast-in-place finish cast bare concrete wall in the step eleven further comprises the following steps:
step 1: during winter construction, a polystyrene board, a curing agent, a plastic film and a flame-retardant grass curtain are selected as protective materials, the polystyrene board is attached to the outer surface of the wall template before the wall template is removed, the plastic film is coated after the curing agent is coated on the outer surface of the cast-in-place facing fair-faced concrete wall after the wall template is removed, and the flame-retardant grass curtain is hung and connected on the outer side of the cast-in-place facing fair-faced concrete wall so as to cover the plastic film;
step 2: during non-winter construction, a plastic film and a flame-retardant grass curtain are selected as protective materials, after the wall body template is removed, proper amount of water is sprayed on the outer surfaces of the two sides of the cast-in-place facing fair-faced concrete wall body, the outer surface of the cast-in-place facing fair-faced concrete wall body is coated by the plastic film, and the flame-retardant grass curtain is hung and connected on the outer side of the cast-in-place facing fair-faced concrete wall body so as to cover the flame-retardant grass curtain on the plastic film.
In the fifth step, the admixture is one of silicon powder, fly ash, ground slag powder and natural zeolite powder.
The invention has the beneficial effects that: by adopting the technical scheme of the invention, the novel wall body template is made of the steel beam in the shape of a Chinese character 'ji' and the punching cold-formed C-shaped steel, the wall body framework and the wall body template are tightly and fixedly connected together by adopting a large number of wall penetrating screws, the structural strength of the existing wall body template supporting system is greatly enhanced, and the panel is tightly attached to the wall body framework, so that the flatness of the side surface of a cast wall body is effectively ensured. The cast-in-place facing fair-faced concrete wall body does not need to use chemical products such as coatings, facings and the like, reduces a large amount of construction waste, cancels a construction process of a leveling layer, reduces the usage amount of mortar, saves resources, reduces dust emission in the construction operation process, reduces construction operation noise, lightens environmental pollution and obtains good social benefits. Meanwhile, the construction process of the cast-in-place facing fair-faced concrete wall has good integrity, no seam and no hollowing and cracking, so that the wall is more favorable for moisture prevention and leakage prevention, and the fair-faced concrete has the advantages of low cost and price compared with building materials such as stone materials and the like.
Drawings
FIG. 1 is a flow chart of a construction method of a cast-in-place finish fair-faced concrete wall of the invention;
FIG. 2 is a schematic structural view of the wall form of the present invention;
FIG. 3 is a schematic view of the connection structure of the wall form and the wall skeleton according to the present invention;
FIG. 4 is a schematic view of the structure of the form of the present invention;
fig. 5 is a schematic view illustrating the installation of the form for windows and doors according to the present invention.
In the figure: the method comprises the following steps of 1-transverse back edge, 2-panel, 3-vertical secondary edge, 4-wall-penetrating screw, 5-sponge sealing gasket, 6-PVC sleeve, 7-nylon plug and 8-door and window template.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
As shown in fig. 1, 2, 3, 4 and 5, the invention provides a construction method of a cast-in-place finish cast-in-place fair-faced concrete wall, which comprises the following steps:
the method comprises the following steps: defining a construction area: marking a closed annular contour line on the ground as a construction area according to a construction drawing;
step two: preparing a wall framework: laying a plurality of vertical steel bars which are vertically arranged on the ground in the construction area of the step one, then arranging a plurality of transverse steel bars along the horizontal direction, and binding the crossed joint of the vertical steel bars and the transverse steel bars together by using binding wires, so that the vertical steel bars, the transverse steel bars and the binding wires are connected to form a wall framework;
step three: preparing a plurality of wall templates: preparing at least two rectangular panels, installing a plurality of vertical secondary ridges on the panels in parallel at certain intervals along the length direction of the panels, arranging a plurality of transverse back ridges on the vertical secondary ridges in parallel at certain intervals along the width direction of the panels, and welding the crossed joint of the vertical secondary ridges and the transverse back ridges to connect the panels, the vertical secondary ridges and the transverse back ridges together to form a wall body template; further, the vertical secondary ridges are made of a U-shaped section steel beam. The transverse back edge is made of punching cold-bending C-shaped steel. The vertical secondary ridges are connected with the panel by bolts with nominal diameters not less than 16 mm. The panel is a laminated multilayer board or a PPR (polypropylene random) polymer board with the thickness of 18 mm. The distance between any two adjacent vertical secondary ridges is less than 200 mm.
Step four: hoisting the wall template: respectively hoisting the prepared wall body templates in the step three, vertically arranging the wall body templates on two sides of the wall body framework in the step two, enabling the panels to be tightly attached to two opposite side surfaces of the wall body framework, and connecting the wall body framework and the wall body templates on the two sides together by using a wall penetrating screw rod; further, the nominal diameter of the wall-through screw is not less than 16 mm. The step of hoisting the wall form further comprises the following steps:
step 1: sleeving a PVC sleeve on the wall-penetrating screw rod, and arranging the PVC sleeve in the wall framework;
step 2: nylon plugs are sleeved and plugged at two ends of the PVC sleeve;
and step 3: and a sponge sealing ring is clamped between the nylon plug and the panel.
And the step of hoisting the wall body templates further comprises the step of sticking a sealing strip at the joint of any two adjacent wall body templates.
Step five: preparing bare concrete: putting a proper amount of cement, stones, sand, water, admixture and additive into a stirrer, and uniformly stirring and mixing to obtain the fair-faced concrete; further, the admixture is one of silicon powder, fly ash, ground slag powder and natural zeolite powder.
Step six: removing impurities: removing all impurities in the wall framework and the wall formwork;
step seven: pouring cement mortar: pouring cement mortar with a proper thickness into the wall body framework, and obtaining a cement mortar layer at the bottom of the wall body framework; and seventhly, the thickness of the cement mortar layer is 30 mm-50 mm.
Step eight: pouring bare concrete: pouring the prepared fair-faced concrete obtained in the step five into the wall body framework to obtain a pouring layer in the wall body framework;
step nine: vibrating the bare concrete: vibrating the pouring layer in the step eight by using a vibrating rod, and discharging air bubbles in the fair-faced concrete to ensure that the fair-faced concrete is combined compactly; further, in the eighth step to the ninth step, the thickness of each casting layer is 400mm to 500 mm. And step nine, the vibrating rod penetrates through at least one pouring layer and extends into the pouring layer adjacent to the lower side of the pouring layer by 50-100 mm. In the ninth step, the time for vibrating the bare concrete for one time is 20s to 30 s.
Step ten: repeating the step eight to the step nine for a plurality of times, so that the height of the cement mortar layer and all the pouring layers which are overlapped together is consistent with the mark of the construction drawing in the step one, and the cement mortar layer and all the pouring layers which are overlapped together form a cast-in-situ facing fair-faced concrete wall body with the wall framework;
step eleven: maintaining the cast-in-place finish concrete wall: and (3) dismantling the wall templates on the two sides of the cast-in-place finish concrete wall body in the step ten, coating the wall templates and the outer surface of the cast-in-place finish concrete wall body with a protective material, maintaining the cast-in-place finish concrete wall body for a plurality of days, and then removing the protective material.
Further, the step of maintaining the cast-in-place finish concrete wall further comprises the following steps:
step 1: during winter construction, a polystyrene board, a curing agent, a plastic film and a flame-retardant grass curtain are selected as protective materials, the polystyrene board is attached to the outer surface of the wall template before the wall template is removed, the plastic film is coated after the curing agent is coated on the outer surface of the cast-in-place facing fair-faced concrete wall after the wall template is removed, and the flame-retardant grass curtain is hung and connected on the outer side of the cast-in-place facing fair-faced concrete wall so as to cover the plastic film;
step 2: during non-winter construction, a plastic film and a flame-retardant grass curtain are selected as protective materials, after the wall body template is removed, proper amount of water is sprayed on the outer surfaces of the two sides of the cast-in-place facing fair-faced concrete wall body, the outer surface of the cast-in-place facing fair-faced concrete wall body is coated by the plastic film, and the flame-retardant grass curtain is hung and connected on the outer side of the cast-in-place facing fair-faced concrete wall body so as to cover the flame-retardant grass curtain on the plastic film.
Further, in the step of maintaining the cast-in-place finish concrete wall, the maintenance time is not less than 14 days during winter construction, and is not less than 7 days during non-winter construction.
Further, the construction method of the cast-in-place finish cast-in-place clear concrete wall further comprises the following steps:
step 1: the method comprises the following steps that a plurality of limiting steel bars are arranged in the horizontal direction, and the limiting steel bars, the vertical steel bars and the transverse steel bars are used for surrounding to form a door and window frame, so that the arrangement position of the door and window frame conforms to the construction drawing.
Step 2: preparing a door and window template: preparing a plurality of door and window edge ridges and door and window side panels, surrounding the door and window edge ridges to form an annular frame structure, welding the door and window edge ridges together, covering the door and window side panels, fixedly installing the door and window side panels on the outer wall and the inner wall of the frame structure to form a door and window template, and enabling the appearance and the size of the door and window template to correspond to the marks on the construction drawing;
and step 3: the step of hoisting the wall body template further comprises the step of connecting the door and window frame with the wall body templates on two sides by using a plurality of wall penetrating screw rods along the edge of the door and window frame;
and 4, step 4: the step of pouring the fair-faced concrete further comprises the step of uniformly pouring the fair-faced concrete along two sides of the door and window frame respectively;
and 5: the step of vibrating the bare concrete further comprises simultaneously vibrating along both sides of the door and window frame.
By adopting the technical scheme of the invention, the novel wall body template is made of the steel beam in the shape of a Chinese character 'ji' and the punching cold-formed C-shaped steel, the wall body framework and the wall body template are tightly and fixedly connected together by adopting a large number of wall penetrating screws, the structural strength of the existing wall body template supporting system is greatly enhanced, and the panel is tightly attached to the wall body framework, so that the flatness of the side surface of a cast wall body is effectively ensured. The cast-in-place facing fair-faced concrete wall body does not need to use chemical products such as coatings, facings and the like, reduces a large amount of construction waste, cancels a construction process of a leveling layer, reduces the usage amount of mortar, saves resources, reduces dust emission in the construction operation process, reduces construction operation noise, lightens environmental pollution and obtains good social benefits. Meanwhile, the construction process of the cast-in-place facing fair-faced concrete wall has good integrity, no seam and no hollowing and cracking, so that the wall is more favorable for moisture prevention and leakage prevention, and the fair-faced concrete has the advantages of low cost and price compared with building materials such as stone materials and the like.
Claims (9)
1. A construction method of a cast-in-place facing fair-faced concrete wall is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: defining a construction area: marking a closed annular contour line on the ground as a construction area according to a construction drawing;
step two: preparing a wall framework: laying a plurality of vertical steel bars which are vertically arranged on the ground in the construction area of the step one, then arranging a plurality of transverse steel bars along the horizontal direction, and binding the crossed joint of the vertical steel bars and the transverse steel bars together by using binding wires, so that the vertical steel bars, the transverse steel bars and the binding wires are connected to form a wall framework;
step three: preparing a plurality of wall templates: preparing at least two rectangular panels, installing a plurality of vertical secondary ridges on the panels in parallel at certain intervals along the length direction of the panels, arranging a plurality of transverse back ridges on the vertical secondary ridges in parallel at certain intervals along the width direction of the panels, and welding the crossed joint of the vertical secondary ridges and the transverse back ridges to connect the panels, the vertical secondary ridges and the transverse back ridges together to form a wall body template;
step four: hoisting the wall template: respectively hoisting the prepared wall body templates in the step three, vertically arranging the wall body templates on two sides of the wall body framework in the step two, enabling the panels to be tightly attached to two opposite side surfaces of the wall body framework, and connecting the wall body framework and the wall body templates on the two sides together by using a wall penetrating screw rod; step four, the step of hoisting the wall body template further comprises the following steps:
step 1: sleeving a PVC sleeve on the wall-penetrating screw rod, and arranging the PVC sleeve in the wall framework;
step 2: nylon plugs are sleeved and plugged at two ends of the PVC sleeve;
and step 3: a sponge sealing ring is clamped and plugged between the nylon plug and the panel;
step five: preparing bare concrete: putting a proper amount of cement, stones, sand, water, admixture and additive into a stirrer, and uniformly stirring and mixing to obtain the fair-faced concrete;
step six: removing impurities: removing all impurities in the wall framework and the wall formwork;
step seven: pouring cement mortar: pouring cement mortar with a proper thickness into the wall body framework, and obtaining a cement mortar layer at the bottom of the wall body framework;
step eight: pouring bare concrete: pouring the prepared fair-faced concrete obtained in the step five into the wall body framework to obtain a pouring layer in the wall body framework;
step nine: vibrating the bare concrete: vibrating the pouring layer in the step eight by using a vibrating rod, and discharging air bubbles in the fair-faced concrete to ensure that the fair-faced concrete is combined compactly;
step ten: repeating the step eight to the step nine for a plurality of times, so that the height of the cement mortar layer and all the pouring layers which are overlapped together is consistent with the mark of the construction drawing in the step one, and the cement mortar layer and all the pouring layers which are overlapped together form a cast-in-situ facing fair-faced concrete wall body with the wall framework;
step eleven: maintaining the cast-in-place finish concrete wall: and (3) dismantling the wall templates on the two sides of the cast-in-place finish concrete wall body in the step ten, coating the wall templates and the outer surface of the cast-in-place finish concrete wall body with a protective material, maintaining the cast-in-place finish concrete wall body for a plurality of days, and then removing the protective material.
2. The construction method of the cast-in-place finish cast-in-place concrete wall body as claimed in claim 1, characterized in that: and step three, the vertical secondary ridges are made of U-shaped section steel beams.
3. The construction method of the cast-in-place finish cast-in-place concrete wall body as claimed in claim 1, characterized in that: and step three, the transverse back edges are made of punching cold-bending C-shaped steel.
4. The construction method of the cast-in-place finish cast-in-place concrete wall body as claimed in claim 1, characterized in that: and step three, connecting the vertical secondary ridges with the panel by bolts with nominal diameters not less than 16 mm.
5. The construction method of the cast-in-place finish cast-in-place concrete wall body as claimed in claim 1, characterized in that: fourthly, the nominal diameter of the wall-penetrating screw is not less than 16 mm.
6. The construction method of the cast-in-place finish cast-in-place concrete wall body as claimed in claim 1, characterized in that: and fourthly, the step of hoisting the wall body formwork further comprises the step of sticking a sealing strip at the joint of any two adjacent wall body formworks.
7. The construction method of the cast-in-place finish cast-in-place concrete wall body as claimed in claim 1, characterized in that: and step nine, the vibrating rod penetrates through at least one pouring layer and extends into the pouring layer adjacent to the lower side of the pouring layer by 50-100 mm.
8. The construction method of the cast-in-place finish cast-in-place concrete wall body as claimed in claim 1, characterized in that: the step of maintaining the cast-in-place finish cast bare concrete wall in the step eleven further comprises the following steps:
step 1: during winter construction, a polystyrene board, a curing agent, a plastic film and a flame-retardant grass curtain are selected as protective materials, the polystyrene board is attached to the outer surface of the wall template before the wall template is removed, the plastic film is coated after the curing agent is coated on the outer surface of the cast-in-place facing fair-faced concrete wall after the wall template is removed, and the flame-retardant grass curtain is hung and connected on the outer side of the cast-in-place facing fair-faced concrete wall so as to cover the plastic film;
step 2: during non-winter construction, a plastic film and a flame-retardant grass curtain are selected as protective materials, after the wall body template is removed, proper amount of water is sprayed on the outer surfaces of the two sides of the cast-in-place facing fair-faced concrete wall body, the outer surface of the cast-in-place facing fair-faced concrete wall body is coated by the plastic film, and the flame-retardant grass curtain is hung and connected on the outer side of the cast-in-place facing fair-faced concrete wall body so as to cover the flame-retardant grass curtain on the plastic film.
9. The construction method of the cast-in-place finish cast-in-place concrete wall body as claimed in claim 1, characterized in that: in the fifth step, the admixture is one of silicon powder, fly ash, ground slag powder and natural zeolite powder.
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| CN109930712A (en) * | 2019-03-28 | 2019-06-25 | 温州市华宁建筑机械有限公司 | The cast-in-place double mesh sheet of one kind exempt from the plaster dedicated framework of partition wall construction and its construction method |
| CN113027055A (en) * | 2021-03-15 | 2021-06-25 | 北京匠人清水装饰工程有限公司 | White clear water-imitating concrete facing process |
| CN113585553A (en) * | 2021-07-27 | 2021-11-02 | 格林堡绿色建设科技有限公司 | EPS (expandable polystyrene) disassembly-free heat-insulation wall formwork framework with fireproof isolation belt and construction method |
| CN114150871A (en) * | 2021-09-26 | 2022-03-08 | 中建三局集团有限公司 | Construction method of overlong cast-in-place facing clear water concrete decorative thin wall |
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