CN107542211B - Cast-in-place light wallboard - Google Patents
Cast-in-place light wallboard Download PDFInfo
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- CN107542211B CN107542211B CN201710733055.7A CN201710733055A CN107542211B CN 107542211 B CN107542211 B CN 107542211B CN 201710733055 A CN201710733055 A CN 201710733055A CN 107542211 B CN107542211 B CN 107542211B
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Abstract
The invention discloses a cast-in-place lightweight wallboard and a floor system, which belong to the field of building materials and comprise a gypsum mortar board, a steel wire mesh and an internal mold, wherein the steel wire mesh is in a mesh shape and comprises an upper layer and a lower layer, W-shaped supporting steel wires are arranged between the upper layer and the lower layer, and the internal mold is placed in the meshes of the two layers of steel wire meshes; the gypsum mortar board consists of gypsum powder, fly ash, a waterproof agent, paper pulp, fibers, red mud, quartz powder, magnesium oxide, magnesium chloride, a retarder and a rust inhibitor; the inner mold is made of light materials made of expanded polystyrene particles. The gypsum board prepared by using waste products of thermal power plants and aluminum plants, namely gypsum powder, fly ash and red mud solid powder waste as raw materials and adding a small amount of modifying additive can form a continuous waterproof layer, has good elongation and breaking strength, good waterproof, sound insulation and earthquake resistance effects, good acid and alkali resistance, excellent weather resistance, strong adhesive force, mildew resistance, bacteriostasis and durability, and is quick and convenient to construct when in use.
Description
Technical Field
The invention relates to the field of building materials, in particular to a cast-in-place light wall plate and a floor system.
Background
The traditional partition board is formed by plastering by using fired bricks, and the fired bricks need to occupy land and take soil and are fired by a kiln, so that not only is the land resource seriously damaged, but also a large amount of energy is consumed. Along with the development of the building industry, gypsum blocks are used as partition boards, but the gypsum blocks are low in strength, poor in folding resistance and impact resistance, free of hanging bearing force on wall surfaces, prone to crack generation, poor in sound insulation effect, waterproof performance, fireproof performance and anti-seismic performance, and incapable of being used as outer wall partition walls, so that the use position is limited, and market competitiveness is low.
The development of novel wall materials can protect cultivated land, save energy, utilize waste residues, control environment, improve building functions and other important social and economic benefits. The gypsum block is superior to other building materials in heat preservation, heat insulation, filling, decoration and other aspects, and the manufacturing cost and the advancement coexist. Meanwhile, the natural gypsum resource storage amount in China is more than 600 hundred million tons, and the natural gypsum resource storage amount is the first in the world. The stacking of a large amount of chemical gypsum such as phosphogypsum, titanium gypsum and desulfurized gypsum not only occupies a large amount of land but also pollutes the environment, and the treatment cost is quite expensive, so the chemical gypsum is the preferred green building material in terms of ecological construction, environmental protection and comprehensive utilization of resource development. How to utilize the green building material raw materials and change waste into valuable is a continuous pursuit of industry people for many years.
Disclosure of Invention
The invention aims to provide a cast-in-place lightweight wallboard and a floor system.
In order to achieve the purpose, the technical scheme is as follows:
a cast-in-place light wallboard and floor system comprises a gypsum mortar board, a steel wire mesh and an inner mold, wherein the steel wire mesh is in a grid shape and comprises an upper layer and a lower layer, W-shaped supporting steel wires are arranged between the upper layer and the lower layer, and the inner mold is placed in grids of the two layers of steel wire meshes;
the gypsum mortar board is composed of the following raw materials in parts by weight: 80-100 parts of gypsum powder, 10-15 parts of fly ash, 5-8 parts of an organic silicon waterproof agent, 3-5 parts of paper pulp, 3-4 parts of fibers, 5-8 parts of red mud, 5-8 parts of quartz powder, 2-3 parts of magnesium oxide, 0.5-0.8 part of magnesium chloride, 2-3 parts of a retarder, 0.5-0.8 part of a rust inhibitor and a proper amount of water;
the inner mold is made of light materials made of expanded polystyrene particles.
Further, the gypsum mortar board comprises the following raw materials in parts by weight: 85 parts of gypsum powder, 12 parts of fly ash, 6 parts of organosilicon waterproofing agent, 4.5 parts of paper pulp, 3.8 parts of fiber, 7 parts of quartz powder, 2.5 parts of magnesium oxide, 0.6 part of magnesium chloride, 2.5 parts of retarder, 0.6 part of rust inhibitor and a proper amount of water.
Furthermore, the middle part of the inner die is provided with a through hole, and two sides of the through hole are provided with reinforcing ribs.
Further, the reinforcing ribs are rectangular and annular and penetrate through the upper side and the lower side of the inner die.
The beneficial effect who adopts above-mentioned scheme does: the cast-in-place lightweight wallboard and the floor system adopt waste products of thermal power plants and aluminum plants, namely gypsum powder, fly ash and red mud solid powder waste, as raw materials, and a small amount of modification additive is added, so that the prepared gypsum board can form a continuous waterproof layer, and has the advantages of good elongation and breaking strength, good waterproof, sound insulation and earthquake resistance effects, good acid and alkali resistance, excellent weather resistance, strong adhesive force, mildew resistance, bacteriostasis and excellent durability, and the construction is quick and convenient when in use. The solid light material inner film is used in the floor interlayer, so that the use amount of the pouring mortar is reduced. Can be used for continuous large-scale production, and greatly reduces the production cost. The supporting structure and the reinforcing ribs are added in the steel wire mesh and the internal mold, so that the bearing capacity of the steel wire mesh and the internal mold is better ensured, and the steel wire mesh and the internal mold can be used as an indoor partition wall of a common frame structure, and can also be used as an outer wall partition wall, a bearing wall, a floor slab and a roof slab of a residential area, a villa and the like.
Drawings
FIG. 1 is a schematic side view of a cast-in-place lightweight wall panel and floor system of the present invention.
Fig. 2 is a schematic plan view of the cast-in-place lightweight wall panel and floor system of the present invention.
Fig. 3 is a schematic structural view of the solid inner mold of the present invention.
Fig. 4 is a schematic longitudinal sectional view of the solid inner mold of the present invention.
In the figure, 1-gypsum mortar board, 2-steel wire mesh, 3-supporting steel wire, 4-inner mold, 41-reinforcing rib and 42-through hole.
Detailed Description
The present invention is further described with reference to the following embodiments and drawings, but the present invention is not limited to the following embodiments, and it is anticipated that one skilled in the art may make various changes in the embodiments in combination with the prior art.
Referring to fig. 1 and 2, a cast-in-place lightweight wallboard and floor slab comprises a gypsum mortar board 1, a steel wire mesh 2 and an inner mold 4, wherein the steel wire mesh 2 is in a grid shape and comprises an upper layer and a lower layer, W-shaped supporting steel wires 3 are arranged between the upper layer and the lower layer, and the inner mold 4 is placed in the grids of the two layers of steel wire meshes 2; the gypsum mortar board is composed of the following raw materials in parts by weight: 80-100 parts of gypsum powder, 10-15 parts of fly ash, 5-8 parts of an organic silicon waterproof agent, 3-5 parts of paper pulp, 3-4 parts of fibers, 5-8 parts of red mud, 5-8 parts of quartz powder, 2-3 parts of magnesium oxide, 0.5-0.8 part of magnesium chloride, 2-3 parts of a retarder, 0.5-0.8 part of a rust inhibitor and a proper amount of water; the inner mold 4 is a light material made of expanded polystyrene particles.
The preparation and production method comprises the following steps: various raw materials of the gypsum board are directly purchased or processed into fine powder, wherein the red mud powder needs to be subjected to magnetic separation for removing iron. Uniformly mixing gypsum powder, fly ash, red mud powder and quartz powder according to a proportion, adding water accounting for 8-10% of the total weight of the mixture to prepare raw material balls, firstly controlling the temperature to be 270-plus-material roasting at 280 ℃, then roasting at the high temperature of 1400-plus-material roasting at 1500 ℃ to prepare granular materials, adding water accounting for 25-28% of the weight of the granular materials, aging in an aging warehouse, stirring for 3-4 hours all the time, and then airing to obtain aged materials. Adding the magnesium oxide, the magnesium chloride, the retarder and the rust inhibitor into the aged material according to the proportion, uniformly stirring and transporting to a place to be poured.
And (3) erecting a formwork when a wallboard or a floor slab is to be poured, putting the rolled double-layer steel wire mesh 2, adjusting the height and the edge distance to prevent steel wires from being exposed, putting an inner film in the grids of the steel wire mesh, and adjusting the height and the edge distance of the inner film to prevent the inner film from contacting the steel wire mesh. Pumping gypsum mortar into the blank body and forming, and naturally solidifying for 24 hours.
Further, the gypsum mortar board comprises the following raw materials in parts by weight: 85 parts of gypsum powder, 12 parts of fly ash, 6 parts of organosilicon waterproofing agent, 4.5 parts of paper pulp, 3.8 parts of fiber, 7 parts of quartz powder, 2.5 parts of magnesium oxide, 0.6 part of magnesium chloride, 2.5 parts of retarder and 0.6 part of rust inhibitor.
As shown in fig. 3 and 4, a through hole 42 is formed in the middle of the inner mold 4, and reinforcing ribs 41 are formed on both sides of the through hole 42. The reinforcing ribs 41 are rectangular and annular and penetrate through the upper side and the lower side of the inner mold 4. The light material made of the expanded polystyrene particles greatly reduces the weight of the internal mold and the floor slab, is beneficial to forming and processing and has low production cost. The reinforcing ribs are made of high-strength hard materials. The compression capacity of the inner die can be improved, and the functional strength of the whole gypsum board is increased.
The cast-in-situ light floor system is different from general solid plate or hollow beamless floor system, and its dead weight is very light, bearing capacity is very high, and its structure height can be selected to form beam-plate combined cross section, so that its deformation and stress form are greatly different from the above-mentioned two, and its test result shows that the cast-in-situ light floor system possesses good earthquake-resisting property, at the same time possesses good heat-insulating, sound-insulating and fire-resisting properties. The cast-in-situ light floor has great integral rigidity, actual deflection of the engineering is generally less than 1/500, and the corner deformation is smaller, so the twisting effect on the side beam of the floor is much smaller than that of the common floor. The cast-in-place light floor system has the further characteristic of good integrity. The cast-in-place light floor system has the advantages of energy conservation, material conservation, land conservation, reduction of floor height and the like which are factors for directly reducing the manufacturing cost. The non-prestress of the cast-in-place light floor system can realize 33-meter span, the maximum bearing capacity of the floor system reaches 18 tons per square meter, and the requirement of multifunctional and multipurpose of the building is met.
A large amount of steel and concrete are saved, and the construction cost is reduced: the cast-in-place light floor system has light self weight and high bearing capacity, and at present, few systems can achieve the degree. The reduced thickness (the ratio of the reduced solid thickness to the cross section height of the floor) is generally 30-22%, the steel is saved by 30-50%, the cast-in-situ concrete amount is only one third of the common amount, and the economic effect is very obvious. Energy conservation, material conservation, land conservation, plastering and ceiling omission, floor height reduction and cost reduction.
The method is a technical means for large-space and large-load buildings: the cast-in-situ light floor has light dead weight and reasonable stress, so that the large span can be easily realized, the span of 36 m (short span direction) can be made without prestress, and the requirement of multifunction and multiple purposes of the building is met. The cast-in-place light floor system has extremely high bearing capacity and completely meets the civil air defense live load requirement.
Land conservation: the cast-in-place light floor system can reduce the structure thickness, the floor height, the auxiliary areas such as stairs and the like, improve the area utilization efficiency, reduce the space between buildings and increase the number of building layers.
Energy conservation and environmental protection: the cast-in-place light floor system has good heat preservation and sound insulation performance, the invalid space is reduced, and the operation cost of the building is reduced.
The construction is convenient and the templates are reduced: the cast-in-situ light floor slab has the advantages of flat and simple template, template saving, no bamboo plywood cutting, little cast-in-situ concrete amount, simple construction process and construction period shortening.
The fire resistance is good: the fire-resistant limit of the cast-in-situ light floor completely reaches the first-level fire-proof standard. The fire-resistant grade standard of the large square-hole hollow floor system series has tests and conclusions of Chinese building academy of sciences, and a first volume 34 of a building design data set published in 64 years can be checked by a detailed chart.
The earthquake resistance is good: the cast-in-situ light floor is different from common solid or hollow flat beamless floor, and has very light dead weight and very high bearing capacity, and may be formed into beam-slab combined section with great structure height. The research result of the dynamic test of the cast-in-place light floor system shows that the cast-in-place light floor system has good anti-seismic performance.
The rigidity is large: the cast-in-situ light floor has great integral rigidity, measured deflection of the engineering is generally less than 1/400, and corner deformation is smaller, so that the floor has much smaller torsion effect on the side beam than that of common floor. (precise analysis by finite element method and confirmation of test results)
Can effectively reduce the concrete shrinkage cracks: the laminated box is a prefabricated part, the shrinkage of the prefabricated part is finished, and the shrinkage stress of the peripheral cast-in-place rib beam concrete is uniformly released by the laminated box. Through a large number of engineering observations: the shrinkage cracks of the cast-in-place light floor system are far less than those of the cast-in-place part (no expansion joints are reserved based on the characteristic).
Different from a beam-slab system force transmission mode: the load and internal force transmission process of the beam-slab system is as follows: slab → beam → column, because a slab of about 100mm thickness is indeed supported on a beam of 600mm height, the two are very different in stiffness. The cast-in-situ light floor has thickness slightly different from that of the side beam, width several meters and rigidity greater than that of the side beam, so that the force transferring process is directly transferred to the column, and the cast-in-situ light floor → the column.
Waterproof and anti-permeability performance: although the laminated box is not thick, the cast-in-place light floor system has high anti-permeability performance because the concrete is specially made and the factory production can ensure the quality of materials and processing, and the pressure applied by a 40mm thick sheet test is 1.0MPa (10Kg/cm x cm), namely 100 meters high water column pressure. The impervious grade of the material reaches P40 (specification is highest P12). Completely meets the requirement of people's air defense and impermeability.
The durability is good: the cast-in-place light floor system is characterized in that the strength of concrete is high, prefabricated parts C40-C45 are adopted, and the cast-in-place part is not smaller than C30. The thickness of the protective layer is strictly regulated. The cast-in-place rib beam is 25mm, and the precast slab of the superposed box is 15 mm. Therefore, the cast-in-place light floor system has good durability.
The cast-in-place light floor can be designed into different sections: the section of the cast-in-situ light floor can be selected from I-shaped, T-shaped and solid sections. Therefore, the material is fully utilized, and the stress of the section is more reasonable. Different sections can be selected according to the stress characteristics of different parts, and the general rule is as follows: the cross-center positive bending moment area uses a T-shaped cross section, the negative bending moment area near the support uses a I-shaped cross section, and the peripheral stress concentration area of the post uses a solid cross section or even a local supporting plate.
The cast-in-situ light floor system technology is suitable for various multi-layer high-rise buildings: such as shopping malls, multi-story warehouses, multi-story buildings, meeting halls, libraries, underground garages, movie theaters, television studios, office buildings, stairclassrooms, mini-stadiums, and the like. The method is suitable for large-span and large-space buildings: the cast-in-place light floor system can realize 36-meter span without prestress, the maximum span floor system which is put into use at present is 27.5x38.5 meters, and the large-span underground roof with the earthing and fire fighting lanes is 25.2x45.8 meters. The method is suitable for large-load buildings: the maximum soil covering thickness of the finished underground garage is 3.6 meters, a fire fighting lane is added, and the load of the finished underground garage reaches 9.2 tons per square. The designed live load of the multi-storey warehouse is 6.0 tons/square. Is suitable for civil air defense construction: the cast-in-place light floor system has extremely high bearing capacity and good anti-permeability performance, the anti-permeability grade of the material reaches P40 (the highest standard P12), when a cast-in-place layer with a certain thickness is added on the cast-in-place light floor system, the requirements of the anti-permeability and the bearing capacity of a civil air defense building are completely met, and the cast-in-place light floor system is very suitable for being used as the civil.
The cast-in-situ light floor internal mold is also suitable for hollow floor systems and ribbed floor systems.
Claims (3)
1. The utility model provides a cast-in-place light weight wallboard, contains gypsum mortar board (1), wire net (2) and centre form (4), characterized by:
the steel wire mesh (2) is in a grid shape and comprises an upper layer and a lower layer, W-shaped supporting steel wires (3) are arranged between the upper layer and the lower layer, and the inner die (4) is placed in the grids of the two layers of steel wire meshes (2);
the gypsum mortar board is composed of the following raw materials in parts by weight: 80-100 parts of gypsum powder, 10-15 parts of fly ash, 5-8 parts of an organic silicon waterproof agent, 3-5 parts of paper pulp, 3-4 parts of fibers, 5-8 parts of red mud, 5-8 parts of quartz powder, 2-3 parts of magnesium oxide, 0.5-0.8 part of magnesium chloride, 2-3 parts of a retarder, 0.5-0.8 part of a rust inhibitor and a proper amount of water;
the internal mold (4) is made of light materials made of expanded polystyrene particles.
2. A cast-in-place lightweight wall panel as claimed in claim 1, wherein: the middle part of the inner die (4) is provided with a through hole (42), and two sides of the through hole (42) are provided with reinforcing ribs (41).
3. A cast-in-place lightweight wall panel as claimed in claim 2, wherein: the reinforcing ribs (41) are rectangular and annular and penetrate through the upper side and the lower side of the inner die (4).
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| CN201710733055.7A CN107542211B (en) | 2017-08-24 | 2017-08-24 | Cast-in-place light wallboard |
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| CN107542211B true CN107542211B (en) | 2020-04-10 |
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| CN112212128B (en) * | 2020-10-15 | 2022-03-04 | 江西城桥复合材料有限公司 | Composite material with good heat insulation effect and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4131102A1 (en) * | 1991-09-16 | 1993-03-18 | Fels Werke Gmbh | Fire protection inner wall - comprises combination of plaster fibre boards and porous concrete plates with metal cramp bonding |
| CN201125488Y (en) * | 2007-09-29 | 2008-10-01 | 上海盈创装饰设计工程有限公司 | Glass fiber reinforcement gypsum building elements |
| CN101328748A (en) * | 2008-07-11 | 2008-12-24 | 罗国军 | Combined wall slab and mounting construction method |
| CN107060198A (en) * | 2017-04-24 | 2017-08-18 | 董晶龙 | A kind of shockproof building panel of environmental protection and its prepare installation method |
-
2017
- 2017-08-24 CN CN201710733055.7A patent/CN107542211B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4131102A1 (en) * | 1991-09-16 | 1993-03-18 | Fels Werke Gmbh | Fire protection inner wall - comprises combination of plaster fibre boards and porous concrete plates with metal cramp bonding |
| CN201125488Y (en) * | 2007-09-29 | 2008-10-01 | 上海盈创装饰设计工程有限公司 | Glass fiber reinforcement gypsum building elements |
| CN101328748A (en) * | 2008-07-11 | 2008-12-24 | 罗国军 | Combined wall slab and mounting construction method |
| CN107060198A (en) * | 2017-04-24 | 2017-08-18 | 董晶龙 | A kind of shockproof building panel of environmental protection and its prepare installation method |
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Effective date of registration: 20220803 Address after: 335000 Industrial Park, Yujiang District, Yingtan City, Jiangxi Province Patentee after: Jiangxi Kesen Construction Technology Co.,Ltd. Address before: 563000 Yiyuan village, Pengjiang town, Bozhou District, Zunyi City, Guizhou Province Patentee before: ZUNYI SHIHE BUILDING MATERIAL Co.,Ltd. |
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