CN112196152A - Construction process of delayed coagulation concrete wall - Google Patents
Construction process of delayed coagulation concrete wall Download PDFInfo
- Publication number
- CN112196152A CN112196152A CN202010995850.5A CN202010995850A CN112196152A CN 112196152 A CN112196152 A CN 112196152A CN 202010995850 A CN202010995850 A CN 202010995850A CN 112196152 A CN112196152 A CN 112196152A
- Authority
- CN
- China
- Prior art keywords
- wall
- wall body
- concrete
- parts
- pouring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/0445—Synthetic gypsum, e.g. phosphogypsum
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/30—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing magnesium cements or similar cements
- C04B28/32—Magnesium oxychloride cements, e.g. Sorel cement
-
- 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
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
- E04G11/08—Forms, which are completely dismantled after setting of the concrete and re-built for next pouring
- E04G11/12—Forms, which are completely dismantled after setting of the concrete and re-built for next pouring of elements and beams which are mounted during erection of the shuttering to brace or couple the elements
-
- 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
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
-
- 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
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/06—Tying means; Spacers ; Devices for extracting or inserting wall ties
- E04G17/065—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning
- E04G17/0651—One-piece elements
- E04G17/0652—One-piece elements fully recoverable
-
- 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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
- E04G21/246—Safety or protective measures preventing damage to building parts or finishing work during construction specially adapted for curing concrete in situ, e.g. by covering it with protective sheets
-
- 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
- E04G9/00—Forming or shuttering elements for general use
- E04G9/02—Forming boards or similar elements
- E04G9/06—Forming boards or similar elements the form surface being of metal
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention provides a construction process of a retarded concrete wall, which comprises the steps of defining a construction area on the ground, preparing phosphogypsum powder, preparing a wall framework, preparing a plurality of wall templates, hoisting the wall templates, preparing retarded concrete, removing all impurities in the wall framework and the wall templates, pouring cement mortar, pouring the retarded concrete into the wall framework for multiple times, vibrating the retarded concrete, curing the retarded concrete wall and removing protective materials The pouring wall has the advantages of good quality, 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 building engineering, and particularly relates to a construction process of a delayed coagulation 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 wall, the wall structure of reinforcing bar and concrete placement is generally adopted, have that construction operation is fast, efficient, advantages such as wall structure intensity is good, however, when the concrete setting time is too fast, then make mix with air or other impurity in the concrete easily, influence the setting intensity of concrete, in order to reduce the concrete setting speed, generally add appropriate amount retarder in the concrete mixing process, among the prior art, mostly use natural gypsum as the preparation material of retarder, natural gypsum matter composition is comparatively single, however, the natural gypsum that exists in nature at present excavates the productivity very limited, can't satisfy the development demand of building engineering trade.
Disclosure of Invention
In order to solve the technical problems, the invention provides a construction process of a delayed coagulation concrete wall.
The invention is realized by the following technical scheme.
The invention provides a construction process of a delayed coagulation 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 phosphogypsum powder: inputting the water-containing phosphogypsum into a pneumatic drier for dehydration and drying to obtain phosphogypsum powder, wherein the drying time is 1-4 hours, the drying temperature is controlled at 150-180 ℃, and the water content of the phosphogypsum powder is less than or equal to 3%;
step three: 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 four: 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 five: hoisting the wall template: respectively hoisting the prepared wall body templates in the fourth step, vertically arranging the wall body templates on two sides of the wall body framework in the third step, 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 wall penetrating screws;
step six: putting magnesium hydroxide, magnesium chloride, aluminum powder, quicklime, industrial salt, asphalt waste, water glass, 1, 2-hydroxystearic acid, anhydrous sodium sulfate, sodium dodecyl benzene sulfonate, quartz sand, cement, water and the phosphogypsum powder in the second step into a stirrer for continuously stirring for at least 15min according to the following parts by mass to prepare the slow setting concrete;
magnesium hydroxide: 10-25 parts;
magnesium chloride: 0.5-1 part;
aluminum powder: 0.1-0.5 part;
quick lime: 30-40 parts of a binder;
industrial salt: 10-20 parts;
asphalt waste: 25-35 parts;
water glass: 10-30 parts;
1, 2-hydroxystearic acid: 4-8 parts;
anhydrous sodium sulfate: 20-40 parts of a solvent;
sodium dodecylbenzenesulfonate: 6-10 parts of a solvent;
quartz sand: 5-10 parts;
cement: 10-20 parts;
water: 40-70 parts of a binder;
phosphogypsum powder; 60-80 parts;
step seven: removing impurities: removing all impurities in the wall framework and the wall formwork;
step eight: 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 nine: pouring slow setting concrete: pouring the prepared slow-setting concrete obtained in the sixth step into the wall body framework to obtain a pouring layer in the wall body framework;
step ten: vibrating the slow setting concrete: vibrating the pouring layer obtained in the step nine by using a vibrating rod, and discharging air bubbles in the delayed coagulation concrete to make the delayed coagulation concrete compact and combined;
step eleven: repeating the ninth step to the tenth step 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 label of the construction drawing in the first step, and the cement mortar layer and all the pouring layers which are overlapped together are combined with the wall framework to form the retarded concrete wall;
step twelve: curing the retarded concrete wall: and (4) dismantling the wall templates on the two sides of the retarded concrete wall in the step eleven, and coating the wall templates and the outer surface of the retarded concrete wall with a protective material, so that the retarded concrete wall is maintained for a plurality of days, and then removing the protective material.
And fourthly, manufacturing the vertical secondary ridges by using the U-shaped section steel beams.
And step four, the transverse back edges are made of punching cold-bending C-shaped steel.
And fourthly, connecting the vertical secondary ridges with the panel by bolts with nominal diameters not smaller than 16 mm.
And fifthly, the nominal diameter of the wall-penetrating screw is not less than 16 mm.
Step five, 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 fifthly, the step of hoisting the wall body template further comprises the step of sticking a sealing strip at the joint of any two adjacent wall body templates.
In the tenth step, 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 curing the retarded concrete wall in the step twelve 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 curing agent is coated on the outer surface of the retarded concrete wall after the wall template is removed, the plastic film is coated, and the flame-retardant grass curtain is hung on the outer side of the retarded 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 slow-setting concrete wall body, the outer surface of the slow-setting concrete wall body is coated by the plastic film, and the flame-retardant grass curtain is hung on the outer side of the slow-setting concrete wall body so as to cover the plastic film.
The invention has the beneficial effects that: by adopting the technical scheme of the invention, the phosphogypsum is used for replacing natural gypsum to prepare the retarding concrete, so that a large amount of precious natural gypsum resources are saved, waste is turned into wealth, the cost is low, the method has important environmental protection significance and economic significance, the application range of the phosphogypsum is widened, the phosphogypsum is waste material generated in the production of phosphoric acid in the phosphate fertilizer industry, and about 5 tons of waste residues are discharged when 1 ton of phosphoric acid is produced. In addition, the novel wall body template is made of a plurality of steel beams shaped like a Chinese character 'ji' and punched cold-formed C-shaped steel, the wall body framework is tightly and fixedly connected with the wall body template by adopting a large number of wall penetrating screws, the structural strength of the existing wall body template supporting system is greatly enhanced, the panel is tightly attached to the wall body framework, the flatness of the side surface of a cast wall body is effectively ensured, compared with the prior art, the wall body template has reasonable structural design and convenient installation, the wall body pouring construction quality is effectively ensured and controlled, air mixed in concrete can completely escape by fully vibrating in the concrete pouring process, and the concrete condensation speed is reduced, the concrete has stronger setting strength, and is beneficial to prolonging the service life of the wall body.
Drawings
FIG. 1 is a flow chart of the construction process of the retarded concrete wall body 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, fig. 2, fig. 3, fig. 4 and fig. 5, the invention provides a construction process of a delayed coagulation 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 phosphogypsum powder: inputting the water-containing phosphogypsum into a pneumatic drier for dehydration and drying to obtain phosphogypsum powder, wherein the drying time is 1-4 hours, the drying temperature is controlled at 150-180 ℃, and the water content of the phosphogypsum powder is less than or equal to 3%;
step three: 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 four: 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 five: hoisting the wall template: respectively hoisting the prepared wall body templates in the fourth step, vertically arranging the wall body templates on two sides of the wall body framework in the third step, 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 wall penetrating screws; 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 six: putting magnesium hydroxide, magnesium chloride, aluminum powder, quicklime, industrial salt, asphalt waste, water glass, 1, 2-hydroxystearic acid, anhydrous sodium sulfate, sodium dodecyl benzene sulfonate, quartz sand, cement, water and the phosphogypsum powder in the second step into a stirrer for continuously stirring for at least 15min according to the following parts by mass to prepare the slow setting concrete;
magnesium hydroxide: 10-25 parts;
magnesium chloride: 0.5-1 part;
aluminum powder: 0.1-0.5 part;
quick lime: 30-40 parts of a binder;
industrial salt: 10-20 parts;
asphalt waste: 25-35 parts;
water glass: 10-30 parts;
1, 2-hydroxystearic acid: 4-8 parts;
anhydrous sodium sulfate: 20-40 parts of a solvent;
sodium dodecylbenzenesulfonate: 6-10 parts of a solvent;
quartz sand: 5-10 parts;
cement: 10-20 parts;
water: 40-70 parts of a binder;
phosphogypsum powder; 60-80 parts;
by adopting the technical scheme of the invention, the application range of the phosphogypsum is widened by using a large amount of phosphogypsum in the concrete, the using amount of cement is reduced, resources are saved, the freeze-thaw resistance of the concrete is improved by adding industrial salt into the concrete, and the freeze-thaw resistance is greatly improved because the industrial salt can reduce the freezing point of a solution in cold weather, thereby having positive significance for improving the durability of the building partition wall in cold climates.
Step seven: removing impurities: removing all impurities in the wall framework and the wall formwork;
step eight: 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; in the eighth step, the thickness of the cement mortar layer is 30mm to 50 mm.
Step nine: pouring slow setting concrete: pouring the prepared slow-setting concrete obtained in the sixth step into the wall body framework to obtain a pouring layer in the wall body framework;
step ten: vibrating the slow setting concrete: vibrating the pouring layer obtained in the step nine by using a vibrating rod, and discharging air bubbles in the delayed coagulation concrete to make the delayed coagulation concrete compact and combined; further, in the ninth step to the tenth step, the thickness of each casting layer is 400mm to 500 mm. In the tenth step, 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 step ten, the time for single vibration of the delayed coagulation concrete is 20s to 30 s.
Step eleven: repeating the ninth step to the tenth step 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 label of the construction drawing in the first step, and the cement mortar layer and all the pouring layers which are overlapped together are combined with the wall framework to form the retarded concrete wall;
step twelve: curing the retarded concrete wall: and (4) dismantling the wall templates on the two sides of the retarded concrete wall in the step eleven, and coating the wall templates and the outer surface of the retarded concrete wall with a protective material, so that the retarded concrete wall is maintained for a plurality of days, and then removing the protective material.
Further, the step of maintaining the retarded 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 curing agent is coated on the outer surface of the retarded concrete wall after the wall template is removed, the plastic film is coated, and the flame-retardant grass curtain is hung on the outer side of the retarded 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 slow-setting concrete wall body, the outer surface of the slow-setting concrete wall body is coated by the plastic film, and the flame-retardant grass curtain is hung on the outer side of the slow-setting concrete wall body so as to cover the plastic film.
Further, in the step of curing the retarded concrete wall, the curing time is not less than 14 days during winter construction, and the curing time is not less than 7 days during non-winter construction.
Further, the construction process of the retarded 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 slow-setting concrete further comprises the step of uniformly pouring the slow-setting concrete along the two sides of the door and window frame respectively;
and 5: and the step of vibrating the delayed coagulation concrete further comprises vibrating simultaneously along the two side surfaces of the door and window frame respectively.
By adopting the technical scheme of the invention, the phosphogypsum is used for replacing natural gypsum to prepare the retarding concrete, so that a large amount of precious natural gypsum resources are saved, waste is turned into wealth, the cost is low, the method has important environmental protection significance and economic significance, the application range of the phosphogypsum is widened, the phosphogypsum is waste material generated in the production of phosphoric acid in the phosphate fertilizer industry, and about 5 tons of waste residues are discharged when 1 ton of phosphoric acid is produced. In addition, the novel wall body template is made of a plurality of steel beams shaped like a Chinese character 'ji' and punched cold-formed C-shaped steel, the wall body framework is tightly and fixedly connected with the wall body template by adopting a large number of wall penetrating screws, the structural strength of the existing wall body template supporting system is greatly enhanced, the panel is tightly attached to the wall body framework, the flatness of the side surface of a cast wall body is effectively ensured, compared with the prior art, the wall body template has reasonable structural design and convenient installation, the wall body pouring construction quality is effectively ensured and controlled, air mixed in concrete can completely escape by fully vibrating in the concrete pouring process, and the concrete condensation speed is reduced, the concrete has stronger setting strength, and is beneficial to prolonging the service life of the wall body.
Claims (9)
1. The construction process of the delayed coagulation concrete wall is characterized in that: 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 phosphogypsum powder: inputting the water-containing phosphogypsum into a pneumatic drier for dehydration and drying to obtain phosphogypsum powder, wherein the drying time is 1-4 hours, the drying temperature is controlled at 150-180 ℃, and the water content of the phosphogypsum powder is less than or equal to 3%;
step three: 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 four: 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 five: hoisting the wall template: respectively hoisting the prepared wall body templates in the fourth step, vertically arranging the wall body templates on two sides of the wall body framework in the third step, 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 wall penetrating screws;
step six: putting magnesium hydroxide, magnesium chloride, aluminum powder, quicklime, industrial salt, asphalt waste, water glass, 1, 2-hydroxystearic acid, anhydrous sodium sulfate, sodium dodecyl benzene sulfonate, quartz sand, cement, water and the phosphogypsum powder in the second step into a stirrer for continuously stirring for at least 15min according to the following parts by mass to prepare the slow setting concrete;
magnesium hydroxide: 10-25 parts;
magnesium chloride: 0.5-1 part;
aluminum powder: 0.1-0.5 part;
quick lime: 30-40 parts of a binder;
industrial salt: 10-20 parts;
asphalt waste: 25-35 parts;
water glass: 10-30 parts;
1, 2-hydroxystearic acid: 4-8 parts;
anhydrous sodium sulfate: 20-40 parts of a solvent;
sodium dodecylbenzenesulfonate: 6-10 parts of a solvent;
quartz sand: 5-10 parts;
cement: 10-20 parts;
water: 40-70 parts of a binder;
phosphogypsum powder; 60-80 parts;
step seven: removing impurities: removing all impurities in the wall framework and the wall formwork;
step eight: 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 nine: pouring slow setting concrete: pouring the prepared slow-setting concrete obtained in the sixth step into the wall body framework to obtain a pouring layer in the wall body framework;
step ten: vibrating the slow setting concrete: vibrating the pouring layer obtained in the step nine by using a vibrating rod, and discharging air bubbles in the delayed coagulation concrete to make the delayed coagulation concrete compact and combined;
step eleven: repeating the ninth step to the tenth step 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 label of the construction drawing in the first step, and the cement mortar layer and all the pouring layers which are overlapped together are combined with the wall framework to form the retarded concrete wall;
step twelve: curing the retarded concrete wall: and (4) dismantling the wall templates on the two sides of the retarded concrete wall in the step eleven, and coating the wall templates and the outer surface of the retarded concrete wall with a protective material, so that the retarded concrete wall is maintained for a plurality of days, and then removing the protective material.
2. The construction process of the retarded concrete wall according to claim 1, characterized in that: and fourthly, manufacturing the vertical secondary ridges by using the U-shaped section steel beams.
3. The construction process of the retarded concrete wall according to claim 1, characterized in that: and step four, the transverse back edges are made of punching cold-bending C-shaped steel.
4. The construction process of the retarded concrete wall according to claim 1, characterized in that: and fourthly, connecting the vertical secondary ridges with the panel by bolts with nominal diameters not smaller than 16 mm.
5. The construction process of the retarded concrete wall according to claim 1, characterized in that: and fifthly, the nominal diameter of the wall-penetrating screw is not less than 16 mm.
6. The construction process of the slow setting concrete wall body according to claim 3, characterized in that: step five, 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.
7. The construction process of the retarded concrete wall according to claim 1, characterized in that: and fifthly, the step of hoisting the wall body template further comprises the step of sticking a sealing strip at the joint of any two adjacent wall body templates.
8. The construction process of the retarded concrete wall according to claim 1, characterized in that: in the tenth step, 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.
9. The construction process of the retarded concrete wall according to claim 1, characterized in that: the step of curing the retarded concrete wall in the step twelve 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 curing agent is coated on the outer surface of the retarded concrete wall after the wall template is removed, the plastic film is coated, and the flame-retardant grass curtain is hung on the outer side of the retarded 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 slow-setting concrete wall body, the outer surface of the slow-setting concrete wall body is coated by the plastic film, and the flame-retardant grass curtain is hung on the outer side of the slow-setting concrete wall body so as to cover the plastic film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010995850.5A CN112196152A (en) | 2020-09-21 | 2020-09-21 | Construction process of delayed coagulation concrete wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010995850.5A CN112196152A (en) | 2020-09-21 | 2020-09-21 | Construction process of delayed coagulation concrete wall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112196152A true CN112196152A (en) | 2021-01-08 |
Family
ID=74015796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010995850.5A Withdrawn CN112196152A (en) | 2020-09-21 | 2020-09-21 | Construction process of delayed coagulation concrete wall |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112196152A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113482337A (en) * | 2021-06-04 | 2021-10-08 | 安徽中固建设有限公司 | Building construction process |
-
2020
- 2020-09-21 CN CN202010995850.5A patent/CN112196152A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113482337A (en) * | 2021-06-04 | 2021-10-08 | 安徽中固建设有限公司 | Building construction process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101016759B (en) | Fiver cement board grouting wall and construction method therefor | |
| CN104947719B (en) | The rear pouring tape construction method of formwork erecting structure is hung in basement roof post-cast strip | |
| CN103883026B (en) | The construction method of the cast-in-situ thermal-insulated composite outer wall system of green energy conservation | |
| CN108612233B (en) | Construction method of cast-in-situ facing clear concrete wall | |
| CN103866885B (en) | The construction method of the energy-saving heat preserving structure of light inlet window | |
| CN103739251B (en) | Light wallboard and preparation method thereof | |
| CN112196152A (en) | Construction process of delayed coagulation concrete wall | |
| CN208514696U (en) | The angle the roofing R prefabricated board of falling flashing rapid processing mold | |
| CN109722968A (en) | A kind of high-performance permeable concrete system and preparation method thereof of building waste preparation | |
| CN105019593A (en) | Building insulation precast block and modular reinforcement cast-in-place construction method thereof | |
| CN203412143U (en) | Wall body structure of integrally poured building house | |
| CN106223520A (en) | A kind of thin light laminated floor slab and manufacture method | |
| CN113024202B (en) | Prefabricated guard plate at edge of foundation pit and preparation method, application and construction method thereof | |
| CN206625450U (en) | A kind of novel and multifunctional environmentally friendly combined wall board | |
| CN204876276U (en) | Building heat preservation prefabricated section | |
| CN106587894B (en) | A kind of cement steel wire net rack thermal-insulating board of magnesia salt cementitious material foaming | |
| CN108715072A (en) | A kind of composite multi-functional Side fascia | |
| CN206128364U (en) | Civilian housing construction's of steel construction shear force wall | |
| CN209704139U (en) | A kind of vertical storehouse of the prefabricated assembling type reinforced concrete with tenon structure | |
| CN112343351A (en) | Construction method of environment-friendly building | |
| CN114718225A (en) | Metal hollow internal mold wall system | |
| CN210032236U (en) | Inner die fixed outer die assembly type disassembly-free composite template | |
| CN107417211B (en) | Assembled type load-bearing heat-preservation concrete light steel mixed structure wallboard and preparation method thereof | |
| CN206289850U (en) | A kind of precast wall panel | |
| CN104929304A (en) | Production method of light-weight partition wall board |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210108 |
|
| WW01 | Invention patent application withdrawn after publication |