CN109881772B - Beam-free column plate type house structure system - Google Patents

Beam-free column plate type house structure system Download PDF

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Publication number
CN109881772B
CN109881772B CN201910225784.0A CN201910225784A CN109881772B CN 109881772 B CN109881772 B CN 109881772B CN 201910225784 A CN201910225784 A CN 201910225784A CN 109881772 B CN109881772 B CN 109881772B
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wall
boards
wall jointed
jointed boards
magnesium
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CN109881772A (en
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侯永利
曹喜
王常清
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Inner Mongolia Green Housing Industry Technology Co Ltd
Inner Mongolia University of Technology
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Inner Mongolia Lyuhui Housing Industrialization Technology Co ltd
Inner Mongolia University of Technology
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • 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
    • 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
    • C04B9/00—Magnesium cements or similar cements
    • C04B9/04—Magnesium cements containing sulfates, nitrates, phosphates or fluorides
    • 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
    • C04B9/00—Magnesium cements or similar cements
    • C04B9/20—Manufacture, e.g. preparing the batches
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38—Connections for building structures in general
    • E04B1/61—Connections for building structures in general of slab-shaped building elements with each other
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Civil Engineering (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Finishing Walls (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

The invention discloses a beam-free column plate type house structure system which comprises inner wall jointed boards, outer wall jointed boards and a floor slab, wherein the inner wall jointed boards, the outer wall jointed boards and the floor slab are magnesium-based cement foam boards; at the joint of the inner wall jointed boards and the outer wall jointed boards, the inner wall jointed boards are embedded into the outer wall jointed boards or the outer wall jointed boards are embedded into the inner wall jointed boards or the inner wall jointed boards and the outer wall jointed boards are integrally formed; and magnesium-based cement fiber materials are filled in the caulked joints at the joints of the adjacent floor slabs and bond the adjacent floor slabs. The invention does not need to pour the beam column, not only saves a large amount of working hours and shortens the construction period, but also is convenient for recycling the building materials, reduces the generation amount of building garbage in the process of dismantling the building and is beneficial to environmental protection.

Description

Beam-free column plate type house structure system
The application is a divisional application with the name of 'a beam-free column plate type house structure system', the application date of which is 2016, 11 and 17, and the application number of which is 201611052272.1.
Technical Field
The invention relates to the field of buildings, in particular to a beam-free column plate type house structure system.
Background
The existing house adopts a beam column type house structure, and the beam column needs to be cast in situ, so that a large amount of working hours are consumed, the construction period is prolonged, and the recycling of building materials is not convenient, so that a large amount of construction wastes can be generated when the house is dismantled, and the environment is not favorable. The building structure without the beam columns needs the wall body to have good supporting performance, the floor slab needs to have smaller quality on the premise of having certain bending strength and bending strength, but the existing building structure without the beam columns is mostly a one-storey or two-storey building structure due to poor supporting performance of the wall slab and large quality of the floor slab, a building structure with three or more than three layers cannot be constructed, and the effective utilization rate of the land cannot be improved.
Disclosure of Invention
In view of the above, the present invention provides a beam-column-free slab-type building structure system without pouring beam columns, which not only saves a lot of working hours and shortens the construction period, but also facilitates the recovery of building materials, reduces the amount of construction waste generated during the demolition of buildings, and is beneficial to environmental protection.
In order to achieve the purpose, the invention adopts the following technical scheme:
a beamless column plate type house structure system comprises inner wall jointed boards, outer wall jointed boards and a floor slab, wherein the inner wall jointed boards, the outer wall jointed boards and the floor slab are magnesium-based cement foam boards; at the joint of the inner wall jointed boards and the outer wall jointed boards, the inner wall jointed boards are embedded into the outer wall jointed boards or the outer wall jointed boards are embedded into the inner wall jointed boards or the inner wall jointed boards and the outer wall jointed boards are integrally formed; and magnesium-based cement fiber materials are filled in the caulked joints at the joints of the adjacent floor slabs and bond the adjacent floor slabs.
According to the beam-free column plate type house structure system, the outer surface of the joint of the adjacent outer wall jointed boards is covered with the fiber cloth.
In the beam-free column plate type house structure system, the inner wall jointed boards and the outer wall jointed boards are single-layer wall boards; the outer wall jointed board is characterized in that the floor slab extends into the outer wall jointed board at the joint of the floor slab and the outer wall jointed board, an outer wall patch board is arranged on the outer side of the end face of the outer side of the floor slab, the outer wall patch board is embedded in the outer wall jointed board, the outer surface of the outer wall patch board is flush with the outer vertical surface of the outer wall jointed board, and the outer wall patch board is also a magnesium-based cement foam board.
In the beam-free column plate type house structure system, the inner wall jointed boards and the outer wall jointed boards are respectively formed by bonding and connecting single magnesium-based cement foam boards;
at the junction of the inner wall jointed boards and the outer wall jointed boards: the inner wall jointed boards are embedded between two adjacent single magnesium-based cement foaming boards of the outer wall jointed boards, and the outer side end faces of the inner wall jointed boards are flush with the outer vertical faces of the outer wall jointed boards; or a T-shaped node is arranged, the T-shaped node comprises a longitudinal plate and a transverse vertical plate arranged on the outer side surface of the longitudinal plate, the surface of the transverse vertical plate is flush with the outer surface of the outer wall jointed board, and the surface of the longitudinal plate is flush with the surface of the inner wall jointed board; or a T-shaped node group is arranged, the T-shaped node group is composed of T-shaped nodes, each T-shaped node comprises a longitudinal plate and a transverse vertical plate arranged on the outer side surface of the longitudinal plate, the plate surface of each transverse vertical plate is flush with the outer surface of the outer wall jointed board, the plate surface of each longitudinal plate is flush with the plate surface of the inner wall jointed board, the transverse vertical plates of the upper and lower adjacent T-shaped nodes are transversely staggered, so that a groove for accommodating the outer wall jointed board is formed between the two transverse vertical plates separated by one transverse vertical plate, the lengths of the upper and lower adjacent longitudinal plates are different, and a groove for accommodating the inner wall jointed board is formed between the two longitudinal plates separated by one longitudinal plate;
at the joint of the external wall panels (200): the end face of any one of the outer wall jointed boards is flush with the wall surface of the other outer wall jointed board (200), or an L-shaped node unit is arranged.
In the beam-free column plate type house structure system, the magnesium-based cement foam board is prepared by a foaming process by using the following raw materials in parts by weight: 40-65 parts of magnesium salt cement, 1-3 parts of a foam stabilizer and 3-5 parts of a foaming agent;
the preparation method of the magnesium salt cement comprises the following steps: MgO with 100-4And H2Mixing the three components according to the mass ratio of (7-12) to 1 (20-28), and adding inducer with the addition of MgO and MgSO4And H2And (3) 0.5-3 wt% of the total mass of the three components, stirring for more than 24 hours, drying, grinding, and sieving by a 200-mesh sieve to obtain the magnesia cement.
In the beam-column-free plate type house structure system, the preparation method of the inducer comprises the following steps: adding 200-mesh 400-mesh talcum powder into the vinyl acetate-acrylic emulsion, wherein the mass ratio of the talcum powder to the vinyl acetate-acrylic emulsion is (8-15) to (20-30), stirring, heating to 60-80 ℃, keeping for 2-5 hours, filtering and drying; adding aqueous solution of tannic acid into the obtained solid product, wherein the mass fraction of tannic acid in the aqueous solution of tannic acid is 5-10 wt%, the mass ratio of the solid product to the aqueous solution of tannic acid is 1 (20-30), heating to 90-100 ℃, keeping for 5-10 hours, filtering, drying, crushing, and sieving with a 100-mesh sieve to obtain the inducer.
In the beam-column-free plate type house structure system, the inducer consists of a component A and a component B, and the preparation method of the component A comprises the following steps: adding 200-mesh 400-mesh talcum powder into the vinyl acetate-acrylic emulsion, wherein the mass ratio of the talcum powder to the vinyl acetate-acrylic emulsion is (8-15) to (20-30), stirring, heating to 60-80 ℃, keeping for 2-5 hours, filtering and drying; adding the obtained solid product into a tannic acid aqueous solution, wherein the mass fraction of tannic acid in the tannic acid aqueous solution is 5-10 wt%, the mass ratio of the solid product to the tannic acid aqueous solution is 1 (20-30), heating to 90-100 ℃, keeping for 5-10 hours, filtering, drying and crushing, and sieving with a 100-mesh sieve to obtain a component A; the preparation method of the component B comprises the following steps: adding 200-mesh 400-mesh fly ash into triethanolamine aqueous solution, wherein the mass fraction of triethanolamine in the triethanolamine aqueous solution is 3-5 wt%, and the mass ratio of the fly ash to the triethanolamine aqueous solution is 1 (10-20), stirring, heating to 50-70 ℃, keeping for 12-24 hours, filtering and drying; adding the obtained solid product into a silane coupling agent solution, wherein the mass ratio of the solid product to the silane coupling agent solution is 1: (5-20), the mass fraction of the silane coupling agent in the silane coupling agent solution is 10-15 wt%, and the component B is obtained by filtering, drying and crushing the mixture and sieving the crushed mixture by a 100-mesh sieve;
firstly adding the component A, wherein the adding amount of the component A is MgO and MgSO4And H2Stirring for more than 24 hours, wherein the weight percentage of the total mass of the O is 0.5-1 wt%; then adding component B, wherein the adding amount of component B is MgO and MgSO4And H2And (3) stirring for more than 24 hours, wherein the weight percentage of the total mass of the O is 1-2 wt%.
In the beam-free column plate type house structure system, the magnesium-based cement foam board is prepared by a foaming process by using the following raw materials in parts by weight: 40-65 parts of magnesium salt cement, 1-3 parts of pretreated fly ash, 1-3 parts of foam stabilizer and 3-5 parts of foaming agent, wherein the addition amount of the pretreated fly ash is 10-50 wt% of the mass of MgO used in the preparation of the magnesium salt cement;
the preparation method of the magnesium salt cement comprises the following steps: MgO with 100-4And H2Mixing the three components according to the mass ratio of (7-12) to 1 (20-28), and adding inducer with the addition of MgO and MgSO4And H20.5 to 3 weight percent of the total mass of the O, stirring for more than 24 hours, drying, grinding, and sieving by a 200-mesh sieve to obtain the magnesia cement; the inducer consists of a component A and a component B, and the preparation method of the component A comprises the following steps: adding 200-mesh 400-mesh talcum powder into the vinyl acetate-acrylic emulsion, wherein the mass ratio of the talcum powder to the vinyl acetate-acrylic emulsion is (8-15) to (20-30), stirring, heating to 60-80 ℃, keeping for 2-5 hours, filtering and drying; adding the obtained solid product into a tannic acid aqueous solution, wherein the mass fraction of tannic acid in the tannic acid aqueous solution is 5-10 wt%, the mass ratio of the solid product to the tannic acid aqueous solution is 1 (20-30), heating to 90-100 ℃, keeping for 5-10 hours, filtering, drying and crushing, and sieving with a 100-mesh sieve to obtain a component A; the preparation method of the component B comprises the following steps: adding 200-mesh 400-mesh fly ash into triethanolamine aqueous solution, wherein the mass fraction of triethanolamine in the triethanolamine aqueous solution is 3-5 wt%, and the mass ratio of the fly ash to the triethanolamine aqueous solution is 1 (10-20), stirring, heating to 50-70 ℃, keeping for 12-24 hours, filtering and drying; adding the obtained solid product into a silane coupling agent solution, wherein the mass ratio of the solid product to the silane coupling agent solution is 1: (5-15) in a silane coupling agent solutionThe silane coupling agent accounts for 10-15 wt%, and is filtered, dried and crushed, and the component B is obtained after the silane coupling agent passes through a 100-mesh sieve; the inducer adding method comprises the following steps: firstly adding the component A, wherein the adding amount of the component A is MgO and MgSO4And H2Stirring for more than 24 hours, wherein the weight percentage of the total mass of the O is 0.5-1 wt%; then adding component B, wherein the adding amount of component B is MgO and MgSO4And H2Stirring for more than 24 hours, wherein the total mass of the O is 1-2 wt%;
the preparation method of the pretreated fly ash comprises the following steps: adding 200-mesh 400-mesh fly ash into triethanolamine aqueous solution, wherein the mass fraction of triethanolamine in the triethanolamine aqueous solution is 3-5 wt%, and the mass ratio of the fly ash to the triethanolamine aqueous solution is 1 (10-20), stirring, heating to 50-70 ℃, keeping for 12-24 hours, filtering and drying; adding the obtained solid product into a silane coupling agent solution, wherein the mass ratio of the solid product to the silane coupling agent solution is 1: (5-20), the mass fraction of the silane coupling agent in the silane coupling agent solution is 10-15 wt%, filtering, drying and crushing are carried out, and the pretreated fly ash is obtained after a 100-mesh sieve is passed.
The invention has the following beneficial effects:
1. the magnesium-based cement foaming board used by the beam-free column plate type house structure system has a simple preparation route, the magnesium salt cement is produced by using industrial waste sulfuric acid, the Portland cement is reduced or not used at all, the energy is saved, the environment is protected, the waste is utilized, the required raw materials are cheap and easy to obtain, and the product has lower production cost;
2. the beam-free column plate type house structure system is light in weight, high in strength, capable of serving as an inner bearing wall, an outer bearing wall and a partition wall of a multi-storey house, small in self weight and good in anti-seismic performance;
3. the beam-free column plate type house structure system has the advantages of small heat conductivity coefficient, large heat capacity, good impact resistance and good heat preservation, heat insulation and sound insulation effects;
4. the beam-free column plate type house structure system has high strength, high impact resistance and crack resistance, can be directly used for making a painting coating or sticking and hanging a decorative plate on the surface, and has high decoration integration degree;
5. the beam-free column plate type house structure system has the advantages of high industrialization degree, engineering prefabrication, field assembly, high construction speed, good sheet machinability, and capability of being sawn and nailed; the density is low, large hoisting machinery is not needed, and the discharge on the construction site is less.
7. The invention adopts the structure without the beam column, saves the working time for pouring the beam column, shortens the construction period, reduces the construction waste generated during the construction and demolition, is convenient for recycling the building materials (the external wall panel, the internal wall panel and the floor panel in the invention) and is beneficial to environmental protection.
Drawings
FIG. 1 is a schematic external structural view of a single-wall panel for both the exterior wall panels and the interior wall panels of the beam-column-free panel-type building structural system of the present invention;
FIG. 2 is a schematic view of the internal structure of the external wall panels and the internal wall panels of the beam-free column plate type building structure system of the present invention, both of which are single-layer wall panels;
FIG. 3 is a schematic structural view of an external wall corner of a room structure system without a beam column and a slab, wherein the external wall panel and the internal wall panel are both single-layer wall panels;
FIG. 4 is a schematic view of the connection structure of the external wall panels and the floor slabs with the external wall panels and the internal wall panels both being single-layer wall panels of the beam-free column plate type house structural system of the present invention;
FIG. 5 is a schematic view of a bonding connection structure between floor slabs of the beam-column-free slab-type building structural system, wherein the outer wall jointed boards and the inner wall jointed boards are single-layer wall boards;
FIG. 6 is a schematic structural view of the outer side of the junction between the outer wall panels and the inner wall panels of the beam-column-free plate type house structural system of the present invention, wherein the outer wall panels and the inner wall panels are both single-layer wall panels;
FIG. 7 is a schematic structural view of the inner side of the junction between the outer wall panels and the inner wall panels of the beam-free column plate type building structure system of the present invention, wherein the outer wall panels and the inner wall panels are both single-layer wall panels;
FIG. 8 is a schematic structural view of a T-shaped node group in which the exterior wall panels and the interior wall panels of the beam-column-free panel house structural system of the present invention are both single-wall panels;
FIG. 9 is a schematic structural view of a T-shaped node A of the present invention in which the external wall panels and the internal wall panels of the beam-column-free slab type building structure system are both single-layer wall panels;
FIG. 10 is a schematic structural view of another T-node B in which the exterior wall panels and the interior wall panels of the beam-column-free panel-type building structural system of the present invention are both single-wall panels;
FIG. 11 is a schematic structural view of the junction of the exterior wall panels of the flat panel type building structure system of the present invention where the exterior wall panels and the interior wall panels are both single-wall panels;
fig. 12 is a schematic structural view of an L-shaped node unit C in which the external wall panels and the internal wall panels of the beam-free column plate type house structural system are both single-layer wall panels.
In the figure: 100-inner wall splicing board; 200-outer wall splicing plates; 300-a floor slab; 400-magnesium based cement fibre material; 500-fiber cloth; 600-single magnesium-based cement foam board; 700-repairing the outer wall; 800-T shaped wall nodes; 801-longitudinal substrate; 802-a horizontal vertical lath I; 803-a horizontal vertical lath II; 900-T type node; 901-longitudinal plates; 902-a transverse vertical plate; 903-groove; 904-type L node element; 1000-T type node group.
Detailed Description
In order to more clearly illustrate the invention, the invention is further described below with reference to preferred embodiments and the accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.
The magnesium-based cement foam boards of examples 6 and 7 were prepared as follows:
example 1
(a) Preparation of foamed cement
65 kg of magnesium salt cement, 3 kg of foam stabilizer and 5 kg of foaming agent, adding water according to the water-cement ratio of 0.45, and stirring to prepare foaming cement slurry. The foam stabilizer is silicone amide; the foaming agent is sodium dodecyl sulfate.
The preparation method of the magnesium salt cement comprises the following steps: MgO with 100-4And H2Mixing the three components according to the mass ratio of 9:1:25, and then addingAdding inducer, the addition amount of the inducer is MgO and MgSO4And H2And (3) stirring the mixture for more than 24 hours according to 1 wt% of the total mass of the O, the mixture, drying, grinding and sieving by a 200-mesh sieve to obtain the magnesia salt cement.
The preparation method of the inducer comprises the following steps: adding 200-mesh 400-mesh talcum powder into the vinyl acetate-acrylic emulsion, wherein the mass ratio of the talcum powder to the vinyl acetate-acrylic emulsion is 15:22, stirring, heating to 80 ℃, keeping for 5 hours, filtering and drying; adding an aqueous solution of tannic acid into the obtained solid product, wherein the mass fraction of tannic acid in the aqueous solution of tannic acid is 8 wt%, the mass ratio of the solid product to the aqueous solution of tannic acid is 1:20, heating to 90 ℃, keeping for 10 hours, filtering, drying, crushing, and sieving with a 100-mesh sieve to obtain the inducer.
(b) The magnesium-based cement foam board is made of foam cement.
Example 2
This example differs from example 1 in that:
the inducer consists of a component A and a component B, and the preparation method of the component A comprises the following steps: adding 200-mesh 400-mesh talcum powder into the vinyl acetate-acrylic emulsion, wherein the mass ratio of the talcum powder to the vinyl acetate-acrylic emulsion is 8:27, stirring, heating to 60 ℃, keeping for 4 hours, filtering and drying; adding the obtained solid product into a tannic acid aqueous solution, wherein the mass fraction of tannic acid in the tannic acid aqueous solution is 10 wt%, the mass ratio of the solid product to the tannic acid aqueous solution is 1:30, heating to 100 ℃, keeping for 5 hours, filtering, drying, crushing, and sieving with a 100-mesh sieve to obtain a component A; the preparation method of the component B comprises the following steps: adding 200-mesh 400-mesh fly ash into triethanolamine aqueous solution, wherein the mass fraction of the triethanolamine aqueous solution is 5 wt%, and the mass ratio of the fly ash to the triethanolamine aqueous solution is 1:15, stirring, heating to 70 ℃, keeping for 24 hours, filtering and drying; adding the obtained solid product into a silane coupling agent solution, wherein the mass ratio of the solid product to the silane coupling agent solution is 1:10, the mass fraction of the silane coupling agent in the silane coupling agent solution is 10 wt%, filtering, drying, crushing, and sieving with a 100-mesh sieve to obtain the component B.
The inducer adding method comprises the following steps: firstly adding the component A, wherein the adding amount of the component A is MgO and MgSO4And H20.5 wt% of the total mass of O,stirring for more than 24 hours; then adding component B, wherein the adding amount of component B is MgO and MgSO4And H2And (3) stirring for more than 24 hours, wherein the weight percentage of the total mass of the O is 1 percent.
Example 3
This example differs from example 2 in that:
(a) preparation of foamed cement
65 kg of magnesium salt cement, pretreated fly ash, 3 kg of foam stabilizer and 5 kg of foaming agent, adding water according to the water-cement ratio of 0.45, and stirring to prepare foamed cement slurry. The addition amount of the fly ash after the pretreatment is 10 wt% of the MgO used in the preparation of the magnesia salt cement.
The preparation method of the pretreated fly ash comprises the following steps: adding 200-mesh 400-mesh fly ash into triethanolamine aqueous solution, wherein the mass fraction of the triethanolamine aqueous solution is 3 wt%, and the mass ratio of the fly ash to the triethanolamine aqueous solution is 1:12, stirring, heating to 70 ℃, keeping for 12 hours, filtering and drying; adding the obtained solid product into a silane coupling agent solution, wherein the mass ratio of the solid product to the silane coupling agent solution is 1: and 16, the mass fraction of the silane coupling agent in the silane coupling agent solution is 15 wt%, and the pretreated fly ash is obtained by filtering, drying and crushing the fly ash and sieving the fly ash with a 100-mesh sieve.
Example 4
This example differs from example 1 in that: no inducer is added when preparing the magnesia salt cement.
Example 5
This example differs from example 4 in that: the added fly ash is fly ash which is not pretreated.
The magnesium-based cement foamed sheets obtained in examples 1 to 5 were subjected to performance tests, and the results are shown in table 1:
TABLE 1
Figure BDA0002005128900000071
As can be seen from table 1: after the inducer is added, the compressive strength of the magnesium oxysulfate cement can be obviously enhanced, and particularly, the inducer with the components of A and B can be added to further enhance the compressive strength of the magnesium oxysulfate cement; although the initial setting time of the magnesium oxysulfate cement is prolonged after the inducer is added, the initial setting time difference and the final setting time difference are shortened, which indicates that the setting hardening can be accelerated once the setting action of the magnesium oxysulfate cement added with the inducer is started, and the magnesium oxysulfate cement is suitable for site construction requiring rapid setting.
The method for testing the softening coefficient of compression strength in table 1 is as follows: the magnesium-based cement foam boards prepared in examples 1 to 5 were respectively cured for 28 days, soaked in water for 180 days, and then the compressive strengths were respectively measured to calculate the compressive strength softening coefficient. The compressive strength softening coefficient is compressive strength after soaking/compressive strength before soaking.
The corrosion resistance coefficient in table 1 was tested as follows: the magnesium-based cement foam boards prepared in examples 1 to 5 were respectively cured for 28 days, immersed in a magnesium chloride solution containing 31 wt% magnesium chloride for 180 days, and then the compressive strength after immersion was respectively measured to calculate the corrosion resistance coefficient. The corrosion resistance coefficient is the compressive strength after soaking/the compressive strength before soaking.
The test method for the corrosion rate of the steel bars in table 1 is as follows: the magnesium salt cements of examples 1-5 were hydrated for 200 hours, and the corrosion current and corrosion rate of the steel bars in the magnesium salt cement were measured by means of a two-electrode linear polarization method using the CHI660C electrochemical workstation.
Example 6
As shown in fig. 1 to 5, the beam-column-free slab type building structure system of the present embodiment includes an inner wall panel 100, an outer wall panel 200 and a floor slab 300, wherein the inner wall panel 100, the outer wall panel 200 and the floor slab 300 are all magnesium-based cement foam boards; at the joint of the inner wall panels 100 and the outer wall panels 200, the inner wall panels 100 are embedded into the outer wall panels 200 or the outer wall panels 200 are embedded into the inner wall panels 100 or the inner wall panels 100 and the outer wall panels 200 are integrally formed; the caulking joints at the joints of the adjacent floor slabs 300 are filled with magnesium-based cement fiber materials 400, and the magnesium-based cement fiber materials 400 bond the adjacent floor slabs 300. The outer surface of the joint of the adjacent external wall panels 200 is covered with fiber cloth 500.
The inner wall panels 100 and the outer wall panels 200 are single-layer wall panels; at the joint of the floor slab 300 and the external wall jointed boards 200, the floor slab 300 extends into the external wall jointed boards 200, external wall patch boards 700 are arranged on the outer sides of the end faces of the external side of the floor slab 300, the external wall patch boards 700 are embedded in the external wall jointed boards 200, the external surfaces of the external wall patch boards 700 are flush with the external faces of the external wall jointed boards 200, and the external wall patch boards 700 are magnesium-based cement foam boards.
The inner wall panels 100 and the outer wall panels 200 are formed by bonding and connecting single magnesium-based cement foam boards 600; as shown in fig. 6 to 10, at the junction of the inner wall panels 100 and the outer wall panels 200: the inner wall panels 100 are embedded between two adjacent single magnesium-based cement foam boards 600 of the outer wall panels 200, and the outer side end surfaces of the inner wall panels 100 are flush with the outer vertical surfaces of the outer wall panels 200; or a T-shaped node 900 is arranged, the T-shaped node 900 comprises a longitudinal plate 901 and a transverse plate 902 arranged on the outer side surface of the longitudinal plate 901, the plate surface of the transverse plate 902 is flush with the outer surface of the outer wall jointed board 200, and the plate surface of the longitudinal plate 901 is flush with the plate surface of the inner wall jointed board 100; or a T-shaped node group 1000 is provided, the T-shaped node group 1000 is composed of T-shaped nodes 900, each T-shaped node 900 includes a longitudinal plate 901 and a transverse vertical plate 902 disposed on the outer side surface of the longitudinal plate 901, the plate surface of the transverse vertical plate 902 is flush with the outer surface of the outer wall jointed board 200, the plate surface of the longitudinal plate 901 is flush with the plate surface of the inner wall jointed board 100, the transverse vertical plates 902 of the upper and lower adjacent T-shaped nodes 900 are laterally staggered, so that a groove 903 for accommodating the outer wall jointed board 200 is formed between two transverse vertical plates 902 separated by one transverse vertical plate 902, and the lengths of the upper and lower adjacent longitudinal plates 901 are different, so that a groove 903 for accommodating the inner wall jointed board 100 is formed between two longitudinal plates 901 separated by one longitudinal plate 901;
as shown in fig. 11 and 12, at the junction of the external wall panels 200: the end surface of any one of the outer wall panels 200 is flush with the wall surface of the other outer wall panel 200, or is provided with an L-shaped node unit 904.
The magnesium-based cement fiber material of example 6 was prepared as follows:
65 kg of magnesia cement (the magnesia cement of examples 1 to 5 can be used), 5 kg of pretreated fly ash and 5 kg of polyvinyl alcohol fiber were mixed with water at a water-cement ratio of 0.45 and stirred to prepare a slurry of a magnesia-based cement fiber material. The addition amount of the fly ash after the pretreatment is 10 wt% of the MgO used in the preparation of the magnesia salt cement.
The preparation method of the pretreated fly ash comprises the following steps: adding 200-mesh 400-mesh fly ash into triethanolamine aqueous solution, wherein the mass fraction of the triethanolamine aqueous solution is 3 wt%, and the mass ratio of the fly ash to the triethanolamine aqueous solution is 1:12, stirring, heating to 70 ℃, keeping for 12 hours, filtering and drying; adding the obtained solid product into a silane coupling agent solution, wherein the mass ratio of the solid product to the silane coupling agent solution is 1: and 16, the mass fraction of the silane coupling agent in the silane coupling agent solution is 15 wt%, and the pretreated fly ash is obtained by filtering, drying and crushing the fly ash and sieving the fly ash with a 100-mesh sieve.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.

Claims (1)

1. A beamless column plate type house structure system is characterized by comprising inner wall jointed boards (100), outer wall jointed boards (200) and a floor slab (300), wherein the inner wall jointed boards (100), the outer wall jointed boards (200) and the floor slab (300) are magnesium-based cement foam boards; at the joint of the inner wall jointed boards (100) and the outer wall jointed boards (200), the inner wall jointed boards (100) are embedded into the outer wall jointed boards (200) or the outer wall jointed boards (200) are embedded into the inner wall jointed boards (100) or the inner wall jointed boards (100) and the outer wall jointed boards (200) are integrally formed; the caulking joints at the joints of the adjacent floor slabs (300) are filled with magnesium-based cement fiber materials (400), and the magnesium-based cement fiber materials (400) bond the adjacent floor slabs (300);
the outer surface of the joint of the adjacent outer wall jointed boards (200) is covered with fiber cloth (500);
the inner wall jointed boards (100) and the outer wall jointed boards (200) are both single-layer wall boards; at the joint of the floor (300) and the outer wall jointed boards (200), the floor (300) extends into the outer wall jointed boards (200), outer wall supplementary boards (700) are arranged on the outer sides of the outer end faces of the floor (300), the outer wall supplementary boards (700) are embedded in the outer wall jointed boards (200), the outer surfaces of the outer wall supplementary boards (700) are flush with the outer vertical faces of the outer wall jointed boards (200), and the outer wall supplementary boards (700) are magnesium-based cement foam boards;
the inner wall jointed boards (100) and the outer wall jointed boards (200) are formed by bonding and connecting single magnesium-based cement foam boards (600);
at the joint of the inner wall jointed board (100) and the outer wall jointed board (200): the inner wall jointed boards (100) are embedded between two adjacent single magnesium-based cement foaming boards (600) of the outer wall jointed boards (200), and the outer side end faces of the inner wall jointed boards (100) are flush with the outer vertical faces of the outer wall jointed boards (200); or provided with a T-node (900); or a T-shaped node group (1000) is arranged, the T-shaped node group (1000) is composed of T-shaped nodes (900), the T-shaped node (900) comprises a longitudinal plate (901) and a transverse plate (902) arranged on the outer side surface of the longitudinal plate (901), the surface of the transverse vertical plate (902) is flush with the outer surface of the outer wall jointed board (200), the surface of the longitudinal plate (901) is flush with the surface of the inner wall jointed plate (100), the transverse plates (902) of the upper and lower adjacent T-shaped nodes (900) are staggered transversely, a groove (903) for accommodating the external wall jointed boards (200) is formed between two transverse vertical boards (902) separated by one transverse vertical board (902), the lengths of the vertical boards (901) adjacent to each other are different, forming a groove (903) for accommodating the inner wall jointed board (100) between two longitudinal boards (901) separated by one longitudinal board (901);
at the joint of the external wall panels (200): the end face of any one of the outer wall jointed boards (200) is flush with the wall surface of the other outer wall jointed board (200), or an L-shaped node unit (904) is arranged;
the magnesium-based cement foam board is prepared by the following raw materials in parts by weight through a foaming process: 40-65 parts of magnesium salt cement, 1-3 parts of pretreated fly ash, 1-3 parts of foam stabilizer and 3-5 parts of foaming agent, wherein the addition amount of the pretreated fly ash is 10-50 wt% of the mass of MgO used in the preparation of the magnesium salt cement;
the preparation method of the magnesium salt cement comprises the following steps: MgO with 100-4And H2Mixing the three components according to the mass ratio of (7-12) to 1 (20-28), and adding inducer with the addition of MgO and MgSO4And H20.5 to 3 weight percent of the total mass of the O, stirring for more than 24 hours, drying, grinding, and sieving by a 200-mesh sieve to obtain the magnesia cement; the inducer consists of a component A and a component B, and the preparation method of the component A comprises the following steps: adding 200-mesh 400-mesh talcum powder into the vinyl acetate-acrylic emulsion, wherein the mass ratio of the talcum powder to the vinyl acetate-acrylic emulsion is (8-15) to (20-30), stirring, heating to 60-80 ℃, keeping for 2-5 hours, filtering and drying; adding the obtained solid product into a tannic acid aqueous solution, wherein the mass fraction of tannic acid in the tannic acid aqueous solution is 5-10 wt%, the mass ratio of the solid product to the tannic acid aqueous solution is 1 (20-30), heating to 90-100 ℃, keeping for 5-10 hours, filtering, drying and crushing, and sieving with a 100-mesh sieve to obtain a component A; the preparation method of the component B comprises the following steps: adding 200-mesh 400-mesh fly ash into triethanolamine aqueous solution, wherein the mass fraction of triethanolamine in the triethanolamine aqueous solution is 3-5 wt%, and the mass ratio of the fly ash to the triethanolamine aqueous solution is 1 (10-20), stirring, heating to 50-70 ℃, keeping for 12-24 hours, filtering and drying; adding the obtained solid product into a silane coupling agent solution, wherein the mass ratio of the solid product to the silane coupling agent solution is 1: (5-15), the mass fraction of the silane coupling agent in the silane coupling agent solution is 10-15 wt%, and the component B is obtained by filtering, drying and crushing the mixture and sieving the crushed mixture by a 100-mesh sieve; the inducer adding method comprises the following steps: firstly adding the component A, wherein the adding amount of the component A is MgO and MgSO4And H2Stirring for more than 24 hours, wherein the weight percentage of the total mass of the O is 0.5-1 wt%; then is added againThe addition of the component B is MgO and MgSO4And H2Stirring for more than 24 hours, wherein the total mass of the O is 1-2 wt%;
the preparation method of the pretreated fly ash comprises the following steps: adding 200-mesh 400-mesh fly ash into triethanolamine aqueous solution, wherein the mass fraction of triethanolamine in the triethanolamine aqueous solution is 3-5 wt%, and the mass ratio of the fly ash to the triethanolamine aqueous solution is 1 (10-20), stirring, heating to 50-70 ℃, keeping for 12-24 hours, filtering and drying; adding the obtained solid product into a silane coupling agent solution, wherein the mass ratio of the solid product to the silane coupling agent solution is 1: (5-20), the mass fraction of the silane coupling agent in the silane coupling agent solution is 10-15 wt%, filtering, drying and crushing are carried out, and the pretreated fly ash is obtained after a 100-mesh sieve is passed.
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