CN111042431A

CN111042431A - Foam concrete filled partition board and anti-spalling preparation method of partition board

Info

Publication number: CN111042431A
Application number: CN201911359380.7A
Authority: CN
Inventors: 高小建; 任苗; 陆秀丽
Original assignee: Harbin Institute of Technology
Current assignee: Harbin Institute of Technology
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-04-21
Anticipated expiration: 2039-12-25
Also published as: CN111042431B

Abstract

A foam concrete filled partition board and an anti-spalling preparation method of the partition board relate to a partition board and an anti-spalling preparation method of the partition board. The invention aims to solve the problems that the existing foam concrete used as a filling wall material expands in volume and needs large-area cutting treatment in the factory production of the assembled shear wall. The foam concrete (2) is filled in the cavity part in the middle of the concrete frame (1), and the reserved grooves (9) and filling holes (8) on the inner sides of four strip plates of the concrete frame (1) are partially filled after the foam concrete (2) is poured, so that the foam concrete (2) and the concrete frame (1) are combined into an integral wallboard; meanwhile, the filling holes (8) relieve the volume expansion of the foam concrete in the steam curing process and provide convenience for the connection of the concrete wallboard and the peripheral structure. The invention is used for building material manufacturing.

Description

Foam concrete filled partition board and anti-spalling preparation method of partition board

Technical Field

The invention relates to a partition board and an anti-spalling preparation method thereof, in particular to a foam concrete filled partition board and an anti-spalling preparation method thereof. Belongs to the field of building material manufacture.

Background

The green building is the main development direction for realizing ecological environmental protection and capacity structure adjustment in the traditional construction industry. The key point for realizing green building is to select green building materials and a proper building mode. The housing industrialization or assembly type building technology can realize the greening of two aspects of materials and construction at the same time, and is a necessary way for realizing green buildings. The house industrialization generally refers to the construction of houses by adopting an industrialized production mode, is an upgrade and update for the construction of traditional handicraft extensive field construction houses, and has four main marks: design standardization, component factory production, construction assembly and construction implementation integration. The prefabricated assembly type shear wall system is a main structural form for home and abroad housing industrialization, has obvious application advantages and wide development prospect, and has great significance for domestic housing industrialization development by vigorously popularizing the prefabricated assembly type shear wall system. However, the current prefabricated shear wall structural system faces the following major technical problems: the whole wall structure is made of common concrete materials, the structure is heavy, and the prefabricated shear wall needs to be transported to a construction site from a factory by means of large-scale transportation and installation equipment. Therefore, the light building material is adopted as the filling wall body, and the method has important significance for the development of the assembled shear wall structure system.

The light building material comprises inorganic materials and organic materials, and the inorganic light building material has the advantages of fire prevention, safety, low price, ecological environment protection and the like. The foam concrete material has wide application prospect as a filling partition wall in an assembled shear wall structure due to the factors of simple production process, low manufacturing cost, good compatibility with common concrete and the like. However, the biggest problems of the application of the foam concrete to the factory-made prefabricated parts are as follows: the foam concrete containing a large amount of bubbles inside is easy to expand in volume under the steam accelerated curing condition, so that the appearance of the wall is poor or the treatment such as large-area cutting and processing is needed again, thereby affecting the production efficiency and the quality of the member. Therefore, the defects of volume expansion, poor appearance quality, large-area cutting treatment and the like in the factory production of the fabricated shear wall by using the current foam concrete as a filling wall material are overcome.

In summary, the existing foam concrete as the filler wall material has the problems of volume expansion and large-area cutting treatment in the factory production of the fabricated shear wall.

Disclosure of Invention

The invention aims to solve the problems of volume expansion and large-area cutting treatment in the factory production of the assembled shear wall by using the existing foam concrete as a filling wall material. Further provides a foam concrete filled partition board and an anti-spalling preparation method of the partition board.

The technical scheme of the invention is as follows: the utility model provides a partition plate is filled to foam concrete includes the concrete frame, and it still includes foam concrete, connecting reinforcement, lifting hook and sealing strip, sets up a plurality of filling holes and a plurality of recess on the concrete frame, connects through connecting reinforcement between the two relative slats on the concrete frame, and the lifting hook is installed at a tip of connecting reinforcement, and the lifting hook is located the outside of slat, and foam concrete fills in the concrete frame, and the sealing strip pastes in the bottom and the left and right sides of concrete frame.

Further, the concrete frame includes bottom concrete batten, top concrete batten and two lateral part concrete battens, and bottom concrete batten and top concrete batten parallel arrangement from top to bottom and connect and make an organic wholely through two lateral part concrete battens.

Further, all set up a plurality of filling holes and a plurality of recess along its length direction on bottom concrete batten, top concrete batten and two lateral part concrete battens.

Further, the groove is a long strip-shaped groove.

Furthermore, a plurality of bottom reserved holes are formed in the bottom concrete strip along the length direction of the bottom concrete strip.

Furthermore, a plurality of top reserved holes are formed in the top concrete strip along the length direction of the top concrete strip.

Furthermore, the positions of each bottom reserved hole and each top reserved hole are in one-to-one correspondence.

Furthermore, the bottom of the connecting steel bar is fastened in the bottom reserved hole in the bottom concrete strip plate through a bolt, and the top of the connecting steel bar penetrates through the top reserved hole in the top concrete strip plate and is connected with the lifting hook.

The invention also provides a preparation method for preventing the expansion crack of the foam concrete filled partition board, which comprises the following steps:

the method comprises the following steps: prefabricating and producing a bottom concrete batten, a top concrete batten and a side concrete batten according to the sizes designed in advance, assembling the bottom concrete batten and the side concrete batten into a whole, and simultaneously adhering sealing strips to the bottom, the left side and the right side of the concrete frame;

step two: fastening two connecting steel bars in the reserved holes of the bottom concrete batten through bolts;

step three: hoisting the assembled bottom concrete strip and side concrete strip into a mold with a self-temperature-adjusting function, opening a circulating water bath system to preheat the whole mold system, and monitoring the temperature development rule in the mold through a temperature sensor in the mold;

the mold comprises an outer wall, an inner wall, a water inlet pipe, a water outlet pipe and a plurality of temperature sensors, wherein the outer wall is sleeved on the inner wall, a sealed cavity is formed between the outer wall and the inner wall, the water inlet pipe is installed at the upper part of the outer wall, the water outlet pipe is installed at the lower part of the outer wall, the water inlet pipe and the water outlet pipe are both communicated with the sealed cavity and introduce circulating liquid into the sealed cavity, and the plurality of temperature sensors are adhered to the inner wall;

step four: when the temperature in the mold rises to be 5-10 ℃ different from the curing temperature, stopping heating in the circulating water bath; pouring foam concrete slurry with the same temperature into the wallboard mold, and installing the top concrete strips on the concrete frame;

step five: standing for 2-4 hours, continuing heating the mould by circulating water bath, and maintaining constant temperature for 4-6 hours when the temperature reaches the maintenance temperature of 40-60 ℃;

step six: when the foam concrete reaches the set strength, the whole mould is cooled through circulating water bath, when the temperature of the concrete is reduced to be close to the room temperature, the whole wallboard, the middle of which is filled with the foam concrete and the outer part of which is a concrete frame, is moved out of the mould through a lifting hook, and the redundant foam concrete which protrudes out of the outer plane of the concrete strip plate through the filling hole is subjected to local cutting, cutting and grinding treatment, so that the anti-spalling preparation of the foam concrete filled partition board is completed.

Furthermore, the outer wall is made of heat insulation materials, and the inner wall is made of metal plates.

Compared with the prior art, the invention has the following effects:

1. according to the invention, the foam concrete 2 is filled in the middle cavity part of the concrete frame 1, and the foam concrete 2 is partially filled in the reserved grooves 9 and the filling holes 8 on the inner sides of the four panels of the concrete frame 1 after being poured, so that the foam concrete 2 and the concrete frame 1 are combined into an integral wallboard; meanwhile, the filling holes 8 can relieve the volume expansion of the foam concrete in the steam curing process, and provide convenience for the connection of the concrete wallboard and the peripheral structure. The problems of volume expansion, poor appearance quality and large-area cutting treatment in the factory production of the assembled shear wall by using the foam concrete as the filler wall material are effectively solved.

2. The foam concrete filled partition board is simple in structure, the strength of the partition board is enhanced through the connecting steel bars, and the lifting hook is convenient for hoisting and transporting the partition board.

3. According to the invention, the sealing strips 17 are adhered to the outer sides of the bottom concrete strip 5 and the two side concrete strips 7 so as to prevent the freshly-mixed foam concrete from flowing out of the holes, and the sealing strips 17 can be separated when the foam concrete is subjected to thermal expansion so as to relieve the thermal expansion pressure.

4. The foam concrete is industrially manufactured into the filler wall through steam curing, the forming is fast, the industrial efficiency is high, the volume deformation caused by steam curing can be effectively relieved through the reserved holes, and meanwhile, the adhesion with common concrete is enhanced.

5. The intelligent foam concrete temperature-control curing mold A can adjust the curing temperature in real time according to different curing systems, so that the optimal curing of the foam concrete is realized.

Drawings

FIG. 1 is a schematic view of the overall construction of the partition panel of the invention;

FIG. 2 is a schematic structural view of a bottom concrete slab;

FIG. 3 is a schematic structural view of a top concrete slab;

FIG. 4 is a schematic structural view of a side concrete panel;

fig. 5 is a schematic structural diagram of a mold a with a self-temperature-adjusting function.

Detailed Description

The first embodiment is as follows: the embodiment is described with reference to fig. 1 to 4, the foam concrete filled partition board of the embodiment includes a concrete frame 1, and further includes foam concrete 2, connecting bars 3, a lifting hook 4 and sealing strips 17, the concrete frame 1 is provided with a plurality of filling holes 8 and a plurality of grooves 9, two opposite laths on the concrete frame 1 are connected through the connecting bars 3, the lifting hook 4 is installed at one end of the connecting bars 3, the lifting hook 4 is located outside the laths, the foam concrete 2 is filled in the concrete frame 1, and the sealing strips 17 are adhered to the bottom and the left and right sides of the concrete frame 1.

The second embodiment is as follows: describing the present embodiment with reference to fig. 1 to 4, the concrete frame 1 of the present embodiment includes a bottom concrete strip 5, a top concrete strip 6, and two side concrete strips 7, and the bottom concrete strip 5 and the top concrete strip 6 are arranged in parallel up and down and are connected and integrated by the two side concrete strips 7. So set up, cut apart into four parts with concrete frame 1 and process respectively, the processing of every part of being convenient for still is favorable to mass production simultaneously. Other components and connections are the same as in the first embodiment.

The third concrete implementation mode: referring to fig. 1 to 4, the bottom concrete strip 5, the top concrete strip 6 and the two side concrete strips 7 of the present embodiment are provided with a plurality of filling holes 8 and a plurality of grooves 9 along the length direction. So set up, the part is filled the reservation recess 9 and the filling hole 8 of four inboard batten of concrete frame 1 after the foam concrete 2 of being convenient for pours to make foam concrete 2 combine into an integral wallboard with concrete frame 1. Meanwhile, the filling holes 8 can relieve the volume expansion of the foam concrete in the steam curing process, and provide convenience for the connection of the concrete wallboard and the peripheral structure. Other compositions and connections are the same as in the first or second embodiments.

The fourth concrete implementation mode: the present embodiment is described with reference to fig. 2 to 4, and the groove 9 of the present embodiment is a long-strip groove. By the arrangement, the combination area of the foam concrete and the concrete frame is increased conveniently, so that the foam concrete and the concrete frame are combined into a whole wallboard. Other compositions and connection relationships are the same as in the first, second or third embodiment.

Two grooves are formed in the groove 9 of the embodiment along the length directions of the bottom concrete strip 5, the top concrete strip 6 and the two side concrete strips 7. And the two grooves are located outside the filling hole 8.

The fifth concrete implementation mode: referring to fig. 2, the bottom concrete panels 5 of the present embodiment are provided with a plurality of bottom-prepared holes 10 along the longitudinal direction thereof. So set up, be convenient for connect the installation of reinforcing bar. Other compositions and connection relationships are the same as those in the first, second, third or fourth embodiment.

The sixth specific implementation mode: referring to fig. 3, the top concrete panels 6 of the present embodiment are provided with a plurality of top prepared holes 11 along the longitudinal direction thereof. So set up, be convenient for connect the installation of reinforcing bar. Other compositions and connection relationships are the same as in the first, second, third, fourth or fifth embodiment.

The seventh embodiment: referring to fig. 1 to 3, the bottom preformed holes 10 and the top preformed holes 11 of the present embodiment are in one-to-one correspondence. So set up, be convenient for connect the reinforcing bar both ends and adopt relative preformed hole to connect the reinforcing bar. Other compositions and connection relationships are the same as in the first, second, third, fourth, fifth or sixth embodiment.

The specific implementation mode is eight: referring to fig. 1, the bottom of the connecting bar 3 of this embodiment is fastened to the bottom of the bottom concrete strip 5 by bolts through the bottom holes 10, and the top of the connecting bar 3 passes through the top holes 11 of the top concrete strip 6 and is connected to the hook 4. So set up, the connected mode is simple, and is firm reliable. Other constitutions and connection relations are the same as those of any one of the first to seventh embodiments.

The foam concrete filled wallboard of the embodiment is composed of a concrete frame 1, foam concrete 2, connecting steel bars 3 and a lifting hook 4. The concrete frame 1 is a prefabricated common concrete hollow frame and consists of a top concrete strip 6, a bottom concrete strip 5 and two side concrete strips 7; the bottom concrete batten and the two side concrete battens are connected through reinforcing steel bars or bolts, and can also be directly poured into an integral frame; a plurality of grooves 9 and filling holes 8 penetrating the thickness of the whole concrete batten are reserved on the inner side of each concrete batten, sealing strips 17 are adhered to the outer sides of the bottom concrete batten 5 and the two side concrete battens 7 so as to prevent newly-mixed foam concrete from flowing out of the holes, and the sealing strips 17 can fall off to relieve thermal expansion pressure when the foam concrete is subjected to thermal expansion; the bottom concrete strip 5 and the top concrete strip 6 are fixed through two connecting steel bars 3, and the tops of the connecting steel bars are connected with the lifting hook 4 through a reserved hole 10 in the bottom concrete strip 5 and a reserved hole 11 in the top concrete strip 6; the bottom of the connecting steel bar is fastened in the reserved hole 10 on the bottom concrete strip 5 through a bolt, so that the whole concrete wallboard is hoisted through the lifting hook 4. The foam concrete 2 is filled in the middle cavity part of the common concrete frame 1, and the foam concrete 2 is partially filled in reserved grooves 9 and filling holes 8 on the inner sides of four strips of the concrete frame 1 after being poured, so that the foam concrete 2 and the concrete frame 1 are combined into an integral wallboard; meanwhile, the filling holes 8 can relieve the volume expansion of the foam concrete in the steam curing process, and provide convenience for the connection of the concrete wallboard and the peripheral structure.

The specific implementation method nine: referring to fig. 1 to 5, the present embodiment will be described, and a method for manufacturing a foam concrete filled partition board of the present embodiment includes the following steps:

the method comprises the following steps: prefabricating and producing a bottom concrete strip 5, a top concrete strip 6 and a side concrete strip 7 according to the sizes designed in advance, assembling the bottom concrete strip 5 and the side concrete strip 7 into a whole, and simultaneously, adhering sealing strips 17 to the bottom, the left side and the right side of the concrete frame 1;

step two: fastening two connecting steel bars 3 in the reserved holes 10 of the bottom concrete strip 5 through bolts;

step three: hoisting the assembled bottom concrete strip 5 and side concrete strip 7 into a mold A with a self-temperature-adjusting function, opening a circulating water bath system to preheat the whole mold system, and monitoring the temperature development rule in the mold through a temperature sensor 16 in the mold A;

the mold A comprises an outer wall 12, an inner wall 13, a water inlet pipe 14, a water outlet pipe 15 and a plurality of temperature sensors 16, wherein the outer wall 12 is sleeved on the inner wall 13, a sealed cavity is formed between the outer wall 12 and the inner wall 13, the water inlet pipe 14 is installed at the upper part of the outer wall 12, the water outlet pipe 15 is installed at the lower part of the outer wall 12, the water inlet pipe 14 and the water outlet pipe 15 are both communicated with the sealed cavity and are used for introducing circulating liquid 18 into the sealed cavity, and the plurality of temperature sensors 16 are adhered to the inner wall 13;

step four: when the temperature in the mold A is increased to be 5-10 ℃ different from the curing temperature, stopping heating in the circulating water bath; pouring foam concrete slurry having the same temperature into the wallboard mold a, and installing the top concrete strips 6 onto the concrete frame 1;

step five: standing for 2-4 hours, continuing heating the mould A by circulating water bath, and maintaining constant temperature for 4-6 hours when the temperature reaches the maintenance temperature of 40-60 ℃;

step six: when the foam concrete reaches the set strength, the whole mould A is cooled through circulating water bath, when the temperature of the concrete is reduced to be close to the room temperature, the whole wallboard, the middle of which is filled with the foam concrete 2 and the outside of which is a concrete frame, is moved out of the mould A through the lifting hook 4, and the redundant foam concrete which is protruded out of the outer plane of the concrete batten through the filling hole 6 is subjected to local cutting and grinding treatment, so that the anti-spalling preparation of the foam concrete filled partition board is completed.

The detailed implementation mode is ten: referring to fig. 5, the present embodiment will be described, in which the outer wall 12 is made of a heat insulating material and the inner wall 13 is made of a metal plate. So set up, be convenient for realize the heat preservation and the heat transfer to the baffle wall. Other components and connections are the same as in the ninth embodiment.

The mold a with the temperature self-regulating function of the present embodiment is a double-layer rectangular parallelepiped container with a cavity in the middle, and includes an outer wall 12, an inner wall 13, a water inlet 14, a water outlet 15, a temperature sensor 16, and a circulating liquid 18. The outer wall 12 is made of a material with heat preservation and insulation functions, and the inner wall 13 is formed by processing a metal plate with good heat conduction and a smooth and flat surface; the closed space enclosed by the inner wall 13 provides a mold function for the foam partition board, a closed cavity is arranged between the inner wall 13 and the outer wall 14, and circulating liquid 18 is filled in the cavity; the upper part and the lower part of the outer wall 13 are respectively provided with a water inlet 14 and a water outlet 15, and are connected with an external circulating water bath, and the temperature in the circulating control mould reaches a set temperature range through the inlet and outlet of circulating liquid 18. The surface of the inner wall 13 connected with the circulating liquid is stuck with a plurality of temperature sensors, so that the temperature change of the inner surface of the die can be monitored in real time.

The present invention is not limited to the above-described embodiments, which are described in the above-described embodiments and the description only to represent the principle of the present invention, and various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and these changes and modifications fall within the scope of the present invention to be protected. Improvements and modifications within the scope of the invention should be understood as falling within the scope of the invention.

Claims

1. The utility model provides a foam concrete fills partition plate, it includes concrete frame (1), its characterized in that: it still includes foam concrete (2), coupling bar (3), lifting hook (4) and sealing strip (17), set up a plurality of filling hole (8) and a plurality of recess (9) on concrete frame (1), connect through coupling bar (3) between the two relative slats on concrete frame (1), a tip at coupling bar (3) is installed in lifting hook (4), and lifting hook (4) are located the outside of slat, foam concrete (2) are filled in concrete frame (1), bottom and the left and right sides at concrete frame (1) are pasted in sealing strip (17).

2. A foam concrete filled partition wall panel according to claim 1, wherein: concrete frame (1) includes bottom concrete strip (5), top concrete strip (6) and two lateral part concrete strips (7), and parallel arrangement about bottom concrete strip (5) and top concrete strip (6) is connected and is made an organic whole through two lateral part concrete strips (7).

3. A foam concrete filled partition wall panel according to claim 2, wherein: a plurality of filling holes (8) and a plurality of grooves (9) are formed in the bottom concrete strip (5), the top concrete strip (6) and the two side concrete strips (7) along the length direction of the bottom concrete strip and the two side concrete strips.

4. A foam concrete filled partition wall panel according to claim 3, wherein: the groove (9) is a strip-shaped groove.

5. A foam concrete filled partition panel according to claim 2 or 4, wherein: a plurality of bottom reserved holes (10) are formed in the bottom concrete strip (5) along the length direction of the bottom concrete strip.

6. A foam concrete filled partition panel according to claim 5, wherein: a plurality of top reserved holes (11) are formed in the top concrete batten (6) along the length direction of the top concrete batten.

7. The foam concrete filled partition wall panel according to claim 6, wherein: the positions of each bottom reserved hole (10) and each top reserved hole (11) are in one-to-one correspondence.

8. A foam concrete filled partition wall panel according to claim 7, wherein: the bottom of the connecting steel bar (3) is fastened in a bottom reserved hole (10) on the bottom concrete strip (5) through a bolt, and the top of the connecting steel bar (3) penetrates through a top reserved hole (11) on the top concrete strip (6) and is connected with the lifting hook (4).

9. A preparation method for preventing expansion crack of a foam concrete filled partition board is characterized by comprising the following steps: it comprises the following steps:

the method comprises the following steps: prefabricating and producing a bottom concrete strip (5), a top concrete strip (6) and a side concrete strip (7) according to the sizes designed in advance, assembling the bottom concrete strip (5) and the side concrete strip (7) into a whole, and simultaneously adhering sealing strips (17) to the bottom, the left side and the right side of a concrete frame (1);

step two: fastening two connecting steel bars (3) in the reserved holes (10) of the bottom concrete strip (5) through bolts;

step three: hoisting the assembled bottom concrete strip (5) and side concrete strip (7) into a mold (A) with a self-temperature-adjusting function, opening a circulating water bath system to preheat the whole mold system, and monitoring the temperature development rule in the mold through a temperature sensor (16) in the mold (A);

the die (A) comprises an outer wall (12), an inner wall (13), a water inlet pipe (14), a water outlet pipe (15) and a plurality of temperature sensors (16), wherein the outer wall (12) is sleeved on the inner wall (13), a sealed cavity is formed between the outer wall (12) and the inner wall (13), the water inlet pipe (14) is installed on the upper portion of the outer wall (12), the water outlet pipe (15) is installed on the lower portion of the outer wall (12), the water inlet pipe (14) and the water outlet pipe (15) are both communicated with the sealed cavity and are filled with circulating liquid (18) into the sealed cavity, and the plurality of temperature sensors (16) are adhered to the inner wall (13);

step four: when the temperature in the die (A) is increased to be 5-10 ℃ different from the curing temperature, stopping heating in the circulating water bath; pouring a foamed concrete slurry having the same temperature into the wallboard mould (a) and installing the top concrete battens (6) onto the concrete frame (1);

step five: standing for 2-4 hours, continuing heating the mould (A) by circulating water bath, and maintaining constant temperature for 4-6 hours when the temperature reaches the maintenance temperature of 40-60 ℃;

step six: when the foam concrete reaches the set strength, the whole mould (A) is cooled through a circulating water bath, when the temperature of the concrete is reduced to be close to the room temperature, the mould (A) is moved out of the whole wallboard with the middle filled with the foam concrete (2) and the outside provided with the concrete frame through a lifting hook (4), and the excessive foam concrete which is protruded out of the outer plane of the concrete batten through a filling hole (6) is subjected to local cutting and grinding treatment, so that the anti-spalling preparation of the foam concrete filled partition board is completed.

10. The method for preparing the anti-spalling foam concrete filled partition board according to claim 9, wherein the method comprises the following steps: the outer wall (12) is made of heat insulation materials, and the inner wall (13) is made of metal plates.