CN111170691A - Regenerated sound-insulation heat-insulation core material slurry, application thereof in light partition board and regenerated light partition board - Google Patents
Regenerated sound-insulation heat-insulation core material slurry, application thereof in light partition board and regenerated light partition board Download PDFInfo
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- CN111170691A CN111170691A CN202010009306.9A CN202010009306A CN111170691A CN 111170691 A CN111170691 A CN 111170691A CN 202010009306 A CN202010009306 A CN 202010009306A CN 111170691 A CN111170691 A CN 111170691A
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- 238000009413 insulation Methods 0.000 title claims abstract description 93
- 239000011162 core material Substances 0.000 title claims abstract description 81
- 239000002002 slurry Substances 0.000 title claims abstract description 60
- 239000002699 waste material Substances 0.000 claims abstract description 97
- 239000004567 concrete Substances 0.000 claims abstract description 96
- 238000004321 preservation Methods 0.000 claims abstract description 64
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 62
- 239000002245 particle Substances 0.000 claims abstract description 32
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 24
- 239000000843 powder Substances 0.000 claims abstract description 23
- 229920006389 polyphenyl polymer Polymers 0.000 claims abstract description 21
- 239000000378 calcium silicate Substances 0.000 claims description 23
- 229910052918 calcium silicate Inorganic materials 0.000 claims description 23
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims description 23
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- 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
- C04B28/02—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 hydraulic cements other than calcium sulfates
- C04B28/04—Portland 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/16—Waste materials; Refuse from building or ceramic industry
-
- 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
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
- E04B1/78—Heat insulating elements
- E04B1/80—Heat insulating elements slab-shaped
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/74—Removable non-load-bearing partitions; Partitions with a free upper edge
- E04B2/7401—Removable non-load-bearing partitions; Partitions with a free upper edge assembled using panels without a frame or supporting posts, with or without upper or lower edge locating rails
- E04B2/7403—Removable non-load-bearing partitions; Partitions with a free upper edge assembled using panels without a frame or supporting posts, with or without upper or lower edge locating rails with special measures for sound or thermal insulation including fire protection
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight materials
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
- Civil Engineering (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Electromagnetism (AREA)
- Environmental & Geological Engineering (AREA)
- Acoustics & Sound (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Building Environments (AREA)
Abstract
The invention provides a regenerated sound-insulation heat-preservation core material slurry, application thereof in a light partition board and the regenerated light partition board, and relates to the technical field of building materials. The core material slurry provided by the invention comprises 1 part of cement; 1.2-2.4 parts of waste autoclaved aerated concrete block coarse aggregate; 0.96-1.6 parts of waste autoclaved aerated concrete block fine aggregate; 0.15-0.30 part of waste autoclaved aerated concrete block powder; 0.0005-0.0015 parts of hydroxypropyl methyl cellulose; 0.01-0.04 part of air entraining agent; 0.005-0.015 part of water reducing agent; 0.012-0.12 parts of polyphenyl particles; 0.22-0.5 part of water. The slurry provided by the invention can enable the light partition board to have better fire-resistant, high-strength, heat-insulating and sound-insulating effects and low cost. The invention provides a regenerated light partition board, which has the advantages of fire resistance reaching A level, excellent heat preservation and sound insulation effects and high strength.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to regenerated sound-insulation heat-preservation core material slurry, application of the regenerated sound-insulation heat-preservation core material slurry in a light partition board and the regenerated light partition board.
Background
The resource utilization of the building waste is regarded as a field which is neglected for a long time and is relatively blank in resource utilization work, and the research work of the resource utilization technology is not paid enough attention, so that the technical foundation of the current industry is weak, especially the resource utilization of autoclaved aerated concrete blocks in the building waste lacks a complete set of solution technical scheme which can effectively realize large-scale resource utilization, and the development problem of the industry is urgently to be solved through innovation research. The autoclaved aerated concrete block is an important component in the building rubbish, so the resource utilization of the autoclaved aerated concrete block in the building rubbish is an important way for solving the resource utilization of the building rubbish.
Currently, polystyrene boards and foam concrete boards are widely used as materials for manufacturing lightweight partition boards, which have good heat insulation and sound insulation properties, but have some problems, such as: poor fire resistance, low density, low strength and high price, so how to improve the quality of the light partition wall board and reduce the cost is very important.
Disclosure of Invention
In view of the above, the present invention aims to provide a recycled sound insulation and thermal insulation core material slurry, an application thereof in a light partition board, and a recycled light partition board. The invention uses the waste autoclaved aerated concrete blocks to replace high polymer materials to obtain the regenerated sound-insulation heat-preservation core material slurry, so that the light partition board has better effects of fire resistance, high strength, heat preservation, heat insulation and sound insulation, has low cost, and can effectively utilize building wastes as resources.
In order to achieve the above purpose, the invention provides the following technical scheme:
the invention provides a regenerated sound-insulation heat-preservation core material slurry which comprises the following components in parts by mass:
the water content of the waste autoclaved aerated concrete block coarse aggregate and the water content of the waste autoclaved aerated concrete block fine aggregate are independently 15-40%.
Preferably, the particle size of the coarse aggregate of the waste autoclaved aerated concrete block is more than 4.75mm and less than or equal to 50 mm; the particle size of the fine aggregate of the waste autoclaved aerated concrete block is 75 mu m-4.75 mm; the particle size of the waste autoclaved aerated concrete block powder is less than 75 mu m;
preferably, the particle size of the polyphenyl particles is 1-8 mm.
Preferably, the water reducing agent is a polycarboxylic acid high-performance water reducing agent, and the water reducing rate of the water reducing agent is more than or equal to 25%.
The invention provides application of the regenerated sound-insulation heat-preservation core material slurry in the scheme in a light partition board.
The invention provides a regenerated light partition board, which comprises two outer shell plates arranged in parallel and a regenerated sound-insulation heat-preservation core material poured between the two outer shell plates; the outer shell plate is a non-asbestos fiber reinforced calcium silicate plate; the regenerated sound-insulation heat-preservation core material is prepared from the regenerated sound-insulation heat-preservation core material slurry in the scheme.
Preferably, the thickness of the asbestos-free fiber reinforced calcium silicate plate is 4-10 mm; the asbestos-free fiber reinforced calcium silicate board is of type A, and the breaking strength is R1-R5 grade.
Preferably, the width of the regenerated light partition board is 500-700 mm, the height is 2300-3200 mm, and the thickness is 60-150 mm.
Preferably, two vertical side surfaces of the regenerated light partition board are respectively provided with a central tenon and a central groove; the central tenon is matched with the central groove; the width of the central tenon is 2-4 cm smaller than the thickness of the regenerative light partition wall; the height of the central tenon is 2-8 cm.
The invention also provides a preparation method of the regenerated light partition board, which comprises the following steps:
(1) placing the shell plate on the inner wall of a partition plate mould, and then injecting the regenerated sound-insulation heat-preservation core material slurry between the shell plates for vibration tamping to obtain a regenerated light partition plate blank;
(2) and standing the regenerated light partition board blank for 24-72 hours, demoulding, and then maintaining to obtain the regenerated light partition board.
The invention provides a regenerated sound-insulation heat-preservation core material slurry which comprises the following components in parts by mass: 1 part of cement; 1.2-2.4 parts of waste autoclaved aerated concrete block coarse aggregate; 0.96-1.6 parts of waste autoclaved aerated concrete block fine aggregate; 0.15-0.30 part of waste autoclaved aerated concrete block powder; 0.0005-0.0015 parts of hydroxypropyl methyl cellulose; 0.01-0.04 part of air entraining agent; 0.005-0.015 part of water reducing agent; 0.012-0.12 parts of polyphenyl particles; 0.22-0.5 part of water; the water content of the waste autoclaved aerated concrete block coarse aggregate and the water content of the waste autoclaved aerated concrete block fine aggregate are 15-40%. In the invention, the waste autoclaved aerated concrete block coarse aggregate and the waste autoclaved aerated concrete block fine aggregate have a plurality of pores, so that the heat preservation, heat insulation and sound insulation effects are achieved, and the mixed slurry has better working performance and high strength and is convenient to pour and form due to the matched use of the waste autoclaved aerated concrete block coarse aggregate and the waste autoclaved aerated concrete block fine aggregate; the waste autoclaved aerated concrete block powder can replace a part of cement, is economical, energy-saving and environment-friendly, and can increase the consistency of the mixed slurry, so that the slurry is not easy to layer and has better water retention performance; the hydroxypropyl methyl cellulose has the functions of thickening and water retention, and can improve the crack resistance of the core material; the air entraining agent has the effect of reducing water, and the heat preservation, heat insulation and sound insulation effects of the core material are improved due to the introduction of the air bubbles; the water reducing agent has the effect of reducing water, can greatly improve the fluidity of the mixed slurry and improve the strength of the core material; the heat preservation, heat insulation and sound insulation performance of the core material can be improved by adding the polyphenyl granules, and the density of the core material is reduced. The invention mainly takes the waste autoclaved aerated concrete blocks in the construction waste as the raw material, and utilizes the waste autoclaved aerated concrete blocks, thereby realizing the purposes of economy, energy conservation, environmental protection, harmlessness and resource utilization; the components and the using amount of the raw materials are limited, so that the provided regenerated sound-insulation heat-preservation core material slurry has excellent effects of fire resistance, high strength, heat preservation, heat insulation and sound insulation, is low in cost and can be effectively applied to the light partition board.
The invention provides a regenerated light partition board, which comprises two outer shell plates arranged in parallel and a regenerated sound-insulation heat-preservation core material poured between the two outer shell plates; the outer shell plate is a non-asbestos fiber reinforced calcium silicate plate; the regenerated sound-insulation heat-preservation core material is prepared from the regenerated sound-insulation heat-preservation core material slurry in the scheme. The fireproof performance of the regenerated light partition wall provided by the invention reaches the A-level fireproof standard, the heat insulation performance and the sound insulation effect are excellent, the strength is high, the service life is long, the load of a main body structure can be reduced, and the engineering cost is reduced. In addition, the regenerated light partition wall board provided by the invention is simple and rapid in construction, can be cut and processed at will, and can be widely applied to non-bearing inner partition walls of various buildings.
The invention also provides a preparation method of the regenerated light partition board, which is simple to operate, easy to control conditions and easy for large-scale production.
Drawings
Fig. 1 is a schematic structural view of the regenerated lightweight partition board provided by the invention, and in fig. 1, 1 is a shell board, 2 is a regenerated sound-insulation and heat-preservation core material, 3 is a central tenon, and 4 is a central groove.
Detailed Description
The invention provides a regenerated sound-insulation heat-preservation core material slurry which comprises the following components in parts by mass:
the water content of the waste autoclaved aerated concrete block coarse aggregate and the water content of the waste autoclaved aerated concrete block fine aggregate are 15-40%.
The regenerative sound-insulation heat-preservation core material slurry comprises 1 part of cement in parts by mass. The cement of the present invention is not particularly limited, and may be a general-purpose cement known to those skilled in the art. In the specific embodiment of the invention, the cement is P. C32.5R cement, P. P42.5R cement or P. O42.5R cement.
Based on the mass parts of cement, the regenerative sound-insulation heat-preservation core material slurry provided by the invention comprises 1.2-2.4 parts of waste autoclaved aerated concrete block coarse aggregate, preferably 1.5-2.2 parts, and more preferably 1.8 parts. In the invention, the particle size of the coarse aggregate of the waste autoclaved aerated concrete block is preferably more than 4.75mm and less than or equal to 50mm, and more preferably 10-30 mm. In the specific embodiment of the invention, the waste autoclaved aerated concrete block coarse aggregate is an aggregate obtained by crushing waste autoclaved aerated concrete blocks in building garbage. In the invention, the water content of the coarse aggregate of the waste autoclaved aerated concrete block is preferably 25-35%. The invention preferably ensures the water content of the coarse aggregate of the waste autoclaved aerated concrete block through pre-wetting treatment, has no special requirement on the operation method of the pre-wetting treatment, and can adopt a method well known by the technical personnel in the field. According to the invention, the water content of the coarse aggregate of the waste autoclaved aerated concrete block is controlled within the range of 15-40%, so that the fluidity of the mixed slurry after mixing can be improved, and the pouring and forming are convenient; the water in the autoclaved aerated concrete block aggregate can improve the internal curing effect for the hydration reaction of cement. In the invention, the waste autoclaved aerated concrete block coarse aggregate has a plurality of pores, has the effects of heat preservation, heat insulation and sound insulation, and is economic, energy-saving and environment-friendly because of being derived from building garbage.
Based on the mass parts of cement, the recycled sound-insulation heat-preservation core material slurry provided by the invention comprises 0.96-1.6 parts of waste autoclaved aerated concrete block fine aggregate, preferably 1-1.5 parts, and more preferably 1.2 parts. In the invention, the particle size of the fine aggregate of the waste autoclaved aerated concrete block is preferably 75-4.75 mm. In the specific embodiment of the invention, the waste autoclaved aerated concrete block fine aggregate is formed by crushing waste autoclaved aerated concrete blocks in building garbage. In the invention, the water content of the waste autoclaved aerated concrete block fine aggregate is preferably 25-35%. The invention preferably ensures the water content of the fine aggregate of the waste autoclaved aerated concrete block through pre-wetting treatment, has no special requirement on the operation method of the pre-wetting treatment, and can adopt a method well known by the technical personnel in the field. In the invention, the waste autoclaved aerated concrete block fine aggregate has a plurality of pores, has the effects of heat preservation, heat insulation and sound insulation, and is economic, energy-saving and environment-friendly because of being derived from building garbage.
Based on the mass parts of cement, the regenerative sound-insulation heat-preservation core material slurry provided by the invention comprises 0.15-0.30 part of waste autoclaved aerated concrete block powder, preferably 0.18-0.25 part, and more preferably 0.2 part. In the invention, the particle size of the waste autoclaved aerated concrete block powder is preferably less than 75 microns. In the specific embodiment of the invention, the waste autoclaved aerated concrete block powder is prepared by crushing and grinding waste autoclaved aerated concrete blocks in building garbage. In the invention, the waste autoclaved aerated concrete block powder can replace a part of cement, is economical, energy-saving and environment-friendly, and can also increase the consistency of the mixed slurry, so that the material is not suitable for layering, and the water retention performance is better.
The regenerated sound-insulation heat-preservation core material provided by the invention comprises 0.0005-0.0015 part of hydroxypropyl methyl cellulose, preferably 0.0006-0.0012 part of hydroxypropyl methyl cellulose, and more preferably 0.0008 part of hydroxypropyl methyl cellulose by mass. The hydroxypropyl methylcellulose used in the present invention is not particularly limited, and hydroxypropyl methylcellulose known to those skilled in the art may be used. In the invention, the hydroxypropyl methyl cellulose has the functions of thickening and water retention, and can improve the crack resistance of the core material.
The regenerated sound-insulation heat-preservation core material provided by the invention comprises 0.01-0.04 part of air entraining agent, preferably 0.02-0.03 part of air entraining agent, and more preferably 0.028 part of cement by mass. The air entraining agent is not particularly required in the present invention, and those known to those skilled in the art can be used, specifically rosin resins, alkyl aromatic sulfonic acids, fatty alcohol sulfonates, and the like. In the invention, the air entraining agent has the effect of reducing water, and the heat preservation, heat insulation and sound insulation effects of the core material are improved due to the introduction of the air bubbles.
The regenerated sound-insulation heat-preservation core material slurry provided by the invention comprises 0.005-0.015 part of water reducing agent, preferably 0.008-0.012 part of water reducing agent, and more preferably 0.01 part of water reducing agent. In the invention, the water reducing agent is preferably a polycarboxylic acid high-performance water reducing agent, and the water reducing rate of the water reducing agent is preferably more than or equal to 25%. The source of the water reducing agent is not particularly required in the present invention, and commercially available products well known to those skilled in the art can be used.
Based on the mass parts of cement, the recycled sound-insulation heat-preservation core material slurry provided by the invention comprises 0.012-0.12 parts of polyphenyl particles, preferably 0.03-0.1 parts, and more preferably 0.035 parts. In the invention, the particle size of the polyphenyl granules is preferably 1-8 mm, and more preferably 1-6 mm. The source of the polyphenyl particles is not particularly required in the present invention, and polyphenyl particles well known to those skilled in the art can be used. According to the invention, the slurry of the regenerative sound-insulation and heat-preservation core material has high viscosity, and the heat preservation, heat insulation and sound insulation performance of the core material can be improved and the density of the core material can be reduced by adding the polyphenyl particles.
Based on the mass parts of cement, the regenerated sound-insulation heat-preservation core material provided by the invention comprises 0.22-0.5 part of water, preferably 0.3-0.4 part of water, and more preferably 0.35 part of water. The water is not particularly required in the present invention, and water well known to those skilled in the art may be used.
The preparation method of the regenerated sound-insulation heat-preservation core material slurry has no special requirement, and the regenerated sound-insulation heat-preservation core material slurry is prepared by uniformly mixing general cement, waste autoclaved aerated concrete block coarse aggregate, waste autoclaved aerated concrete block fine aggregate, waste autoclaved aerated concrete block powder, hydroxypropyl methyl cellulose, an air entraining agent, a water reducing agent, polyphenyl granules and water. In a particular embodiment of the invention, the mixing is preferably: mixing general cement, water, an air entraining agent, a water reducing agent, hydroxypropyl methyl cellulose and waste autoclaved aerated concrete block powder to obtain a slurry mixture; and then pouring the waste autoclaved aerated concrete block coarse aggregate, the waste autoclaved aerated concrete block fine aggregate and the polyphenyl granules into the slurry mixture for mixing to obtain the regenerated sound-insulation heat-preservation core material slurry. In the present invention, the mixing is preferably stirring mixing, and in the specific embodiment of the present invention, the stirring mixing is performed by using a forced mixer; the invention has no special requirements on the mixing speed and time, and can ensure that all components are uniformly mixed.
The invention mainly takes the waste autoclaved aerated concrete blocks in the construction waste as the raw material, and utilizes the waste autoclaved aerated concrete blocks, thereby realizing the purposes of energy conservation, environmental protection, harmlessness and resource utilization; the regenerated sound-insulation and heat-preservation core material slurry provided by the invention has excellent effects of fire resistance, high strength, heat preservation, heat insulation and sound insulation, is low in cost, and can be effectively applied to light partition boards.
The invention provides a regenerated light partition board, which comprises two outer shell plates arranged in parallel and a regenerated sound-insulation heat-preservation core material poured between the two outer shell plates;
the outer shell plate is a non-asbestos fiber reinforced calcium silicate plate; the regenerated sound-insulation heat-preservation core material is prepared from the regenerated sound-insulation heat-preservation core material slurry in the scheme.
In the present invention, the outer skin sheet is a non-asbestos fiber reinforced calcium silicate sheet; the thickness of the asbestos-free fiber reinforced calcium silicate plate is preferably 4-10 mm, and more preferably 4-6 mm. In the present invention, the asbestos-free fiber-reinforced calcium silicate sheet is preferably an A-type asbestos-free fiber-reinforced calcium silicate sheet having a flexural strength of R1 to R5. In the invention, the asbestos-free fiber reinforced calcium silicate board is taken as the shell board, so that the heat preservation, heat insulation and sound insulation effects of the core material can be improved, and the strength of the regenerated light partition board can be improved; because the decorative surface effect is good, the plastering and leveling treatment on the regenerated light partition board is not needed, and the coating can be directly painted on the surface of the regenerated light partition board.
In the invention, the regenerated sound-insulation heat-preservation core material is poured between the two shell plates.
In the invention, the width of the regenerated light partition board is preferably 500-700 mm, and more preferably 550-650 mm; the height is preferably 2300-3200 mm, and more preferably 2400-2800 mm; the thickness is preferably 60 to 150mm, and more preferably 90 to 120 mm. In the invention, two vertical side surfaces of the regenerated light partition board are preferably respectively provided with a central tenon and a central groove; the central tenon is matched with the central groove; the width of the central tenon is 2-4 cm smaller than the thickness of the regenerative light partition wall, and the height of the central tenon is 2-8 cm.
The structure of the regenerated light partition board provided by the invention is shown in figure 1, wherein in figure 1, 1 is a shell board, 2 is a regenerated sound-insulation heat-preservation core material, 3 is a central tenon, and 4 is a central groove.
The fireproof performance of the regenerated light partition wall provided by the invention reaches the A-level fireproof standard, the heat insulation performance and the sound insulation effect are excellent, the strength is high, the service life is long, the load of a main body structure can be reduced, and the engineering cost is reduced. In addition, the regenerated light partition wall board provided by the invention is simple and rapid in construction, can be cut and processed at will, and can be widely applied to non-bearing inner partition walls of various buildings.
The invention also provides a preparation method of the regenerated light partition board, which comprises the following steps:
(1) placing the shell plate on the inner wall of a partition plate mould, and then injecting the regenerated sound-insulation heat-preservation core material slurry between the shell plates for vibration tamping to obtain a regenerated light partition plate blank;
(2) and standing the regenerated light partition board blank for 24-72 hours, demoulding, and then maintaining to obtain the regenerated light partition board.
The shell plate is placed on the inner wall of the partition plate mould, and then the regenerated sound-insulation heat-preservation core material slurry is injected between the shell plates to be vibrated and tamped, so that a regenerated light partition plate blank is obtained. The partition wall board die has no special requirements, and the partition wall board die known by the person skilled in the art can be adopted. In the present invention, the vibration tamping is performed by a vibrating apparatus, and the vibrating apparatus of the present invention has no particular requirement, and may be a vibrating apparatus well known to those skilled in the art. Vibrating and tamping the regenerated sound-insulation heat-preservation core material slurry (namely the slurry does not have obvious settlement during vibration and a large number of bubbles do not appear on the surface of the slurry) to obtain a regenerated light partition board blank; the central tenon and the central groove are obtained by molding.
After the regenerated light partition board blank is obtained, the regenerated light partition board blank is placed for 24-72 hours, demoulded and maintained to obtain the regenerated light partition board. In the invention, the standing time is preferably 36-48 h; in the actual operation process, the standing time, namely the demolding time is determined according to the field air temperature, and when the air temperature is high, the demolding time can be properly shortened; on the contrary, the demolding time is prolonged. In the present invention, the time for maintenance (total age) is preferably 28 days; the curing preferably includes curing and natural curing which are sequentially performed in a curing shed (or curing kiln). In the present invention, the curing time in the curing barn (or curing kiln) is preferably 7 days. The invention preferably stacks the test piece cured in the curing shed (or curing kiln) in a storage yard for natural curing; the height of the pile is preferably 1.5 m.
The preparation method of the regenerated light partition board provided by the invention is simple to operate, easy to control conditions and easy for large-scale production.
The following detailed description of the recycled sound-insulating and heat-insulating core material slurry and its application in light-weight partition board and a recycled light-weight partition board provided by the present invention will be made with reference to the following examples, which should not be construed as limiting the scope of the present invention.
Example 1
The embodiment provides a regenerated light partition board, which comprises two asbestos-free fiber reinforced calcium silicate shell plates and a regenerated sound-insulation heat-insulation core material poured between the two outer layer plates, wherein the thickness of the asbestos-free fiber reinforced calcium silicate shell plates is 5mm, the class A is A, and the breaking strength is R3 grade. The regenerated light partition board is characterized in that a central tenon is arranged on one vertical side face of the regenerated light partition board, the width of the central tenon is 60mm, the height of the central tenon is 40mm, and a central groove matched with the central tenon is formed in the other side face of the regenerated light partition board. The width of the regenerated light partition board is 550mm, the height is 2450mm, and the thickness is 90 mm.
The regenerative sound-insulation heat-preservation core material is prepared from the following raw materials in parts by mass: 1 part of P. C32.5R cement, 0.35 part of water, 0.028 part of air entraining agent, 0.01 part of polycarboxylic acid high-performance water reducing agent, 0.0008 part of hydroxypropyl methylcellulose, 0.20 part of waste autoclaved aerated concrete block powder, 1.8 parts of waste autoclaved aerated concrete block coarse aggregate, 1.2 parts of waste autoclaved aerated concrete block fine aggregate and 0.03 part of polyphenyl granules; wherein the waste autoclaved aerated concrete block coarse aggregate is an aggregate formed by crushing waste autoclaved aerated concrete blocks in building garbage, and the particle size is 5-40 mm; the waste autoclaved aerated concrete block fine aggregate is an aggregate formed by crushing waste autoclaved aerated concrete blocks in building garbage, and has the particle size of 75 mu m-4.75 mm; the waste autoclaved aerated concrete block powder is powder formed by crushing and grinding waste autoclaved aerated concrete blocks in building garbage, and the particle size is less than 75 mu m; and pre-wetting coarse and fine aggregates of the waste autoclaved aerated concrete blocks until the water content is 35%; the particle size of the polyphenyl granules is 1-4 mm.
The preparation method of the regenerated light partition board comprises the following steps:
(1) placing the outer shell plate on the inner wall of a mould for preparing the regenerated light partition plate;
(2) according to the proportion of the regenerative sound-insulation heat-preservation core material, adding P & C32.5R cement, water, an air entraining agent, a polycarboxylic acid high-performance water reducing agent, hydroxypropyl methyl cellulose and waste autoclaved aerated concrete block powder into a forced mixer, and uniformly stirring to obtain a slurry mixture; then pouring the coarse aggregate, the fine aggregate and the polyphenyl granules of the waste autoclaved aerated concrete block into the slurry mixture, and fully and uniformly stirring to obtain core material slurry;
(3) injecting the core material slurry into a mould provided with a shell plate, and vibrating and tamping the core material slurry by using vibrating equipment;
(4) and standing the vibrated and tamped test piece for 36 hours, demolding, placing the test piece in a curing shed after demolding, curing for 7 days, then flatly placing and stacking the test piece in a storage yard with the stacking height of 1.5 meters, naturally curing for 28 days, and then taking the test piece out of the warehouse to obtain the regenerated light partition board.
The performance of the regenerated light partition board obtained in the embodiment is tested, and the test result is as follows: the fireproof performance reaches A-grade fireproof standard, the compressive strength is 4.5MPa, and the surface density is 85kg/m2。
Example 2
The embodiment provides a regenerated light partition board, which comprises two asbestos-free fiber reinforced calcium silicate shell plates and a regenerated sound-proof heat-insulation core material poured between the two shell plates, wherein the thickness of each asbestos-free fiber reinforced calcium silicate shell plate is 6mm, the thickness of each asbestos-free fiber reinforced calcium silicate shell plate is in class A, and the breaking strength of each asbestos-free fiber reinforced calcium silicate shell plate is R2 grade. The regenerated light partition board is characterized in that a central tenon is arranged on one vertical side face of the regenerated light partition board, the width of the central tenon is 80mm, the height of the central tenon is 60mm, and a central groove matched with the central tenon is formed in the other side face of the regenerated light partition board. The width of the regenerated light partition board is 600mm, the height is 2550mm, and the thickness is 120 mm.
The regenerative sound-insulation heat-preservation core material is prepared from the following raw materials in parts by weight: 1 part of P & P42.5R cement, 0.30 part of water, 0.02 part of air entraining agent, 0.01 part of polycarboxylic acid high-performance water reducing agent, 0.0010 part of hydroxypropyl methyl cellulose, 0.25 part of waste autoclaved aerated concrete block powder, 2.0 parts of waste autoclaved aerated concrete block coarse aggregate, 1.4 parts of waste autoclaved aerated concrete block fine aggregate and 0.035 part of polyphenyl granules; the waste autoclaved aerated concrete block coarse aggregate is an aggregate with continuous gradation formed by crushing waste autoclaved aerated concrete blocks in building garbage, and the particle size is 5-40 mm; the waste autoclaved aerated concrete block fine aggregate is an aggregate formed by crushing waste autoclaved aerated concrete blocks in building garbage, and has the particle size of 75 mu m-4.75 mm; the waste autoclaved aerated concrete block powder is powder formed by crushing and grinding waste autoclaved aerated concrete blocks in building garbage, and the particle size is less than 75 mu m; and pre-wetting coarse and fine aggregates of the waste autoclaved aerated concrete blocks until the water content is 37%; the particle size of the polyphenyl granules is 1-5 mm.
The preparation method of the regenerated light partition board comprises the following steps:
(1) placing the outer shell plate on the inner wall of a mould for preparing the regenerated light partition plate;
(2) according to the proportion of the regenerative sound-insulation heat-preservation core material, adding P & P42.5R cement, water, an air entraining agent, a polycarboxylic acid high-performance water reducing agent, hydroxypropyl methyl cellulose and waste autoclaved aerated concrete block powder into a forced mixer, and uniformly stirring to obtain a slurry mixture; then pouring the coarse aggregate, the fine aggregate and the polyphenyl granules of the waste autoclaved aerated concrete block into the slurry mixture, and fully and uniformly stirring to obtain core material slurry;
(3) injecting the core material slurry into a mould provided with a shell plate, and vibrating and tamping the core material slurry by using vibrating equipment;
(4) and standing the vibrated and tamped test piece for 32 hours, demolding, placing the test piece in a curing kiln for curing for 7 days after demolding, then flatly laying and stacking the test piece in a stacking yard with the stacking height of 1.5 meters, naturally curing for 28 days, and then taking the test piece out of the warehouse to obtain the regenerated light partition board.
The performance of the regenerated light partition board obtained in the embodiment is tested, and the test result is as follows: the fireproof performance reaches A-grade fireproof standard, the compressive strength is 4.0MPa, and the surface density is 100kg/m2。
Example 3
The embodiment provides a regenerated light partition board, which comprises two asbestos-free fiber reinforced calcium silicate shell plates and a regenerated sound-insulation heat-insulation core material poured between the two outer plates, wherein the thickness of each asbestos-free fiber reinforced calcium silicate shell plate is 4mm, the thickness of each asbestos-free fiber reinforced calcium silicate shell plate is in class A, and the breaking strength of each asbestos-free fiber reinforced calcium silicate shell plate is R4 grade. A central tenon is arranged on one vertical side face of the regenerative light partition board, the width of the central tenon is 64mm, the height of the central tenon is 50mm, and a central groove matched with the central tenon is arranged on the other side face of the regenerative light partition board. The width of the regenerated light partition board is 600mm, the height is 2450mm, and the thickness is 100 mm.
The regenerative sound-insulation heat-preservation core material is prepared from the following raw materials in parts by mass: 1 part of P. O42.5R cement, 0.25 part of water, 0.03 part of air entraining agent, 0.015 part of polycarboxylic acid high-performance water reducing agent, 0.0012 part of hydroxypropyl methyl cellulose, 0.18 part of waste autoclaved aerated concrete block powder, 1.4 parts of waste autoclaved aerated concrete block coarse aggregate, 1.0 part of waste autoclaved aerated concrete block fine aggregate and 0.10 part of polyphenyl granules; the waste autoclaved aerated concrete block coarse aggregate is an aggregate with continuous gradation formed by crushing waste autoclaved aerated concrete blocks in building garbage, and the particle size is 5-40 mm; the waste autoclaved aerated concrete block fine aggregate is an aggregate formed by crushing waste autoclaved aerated concrete blocks in building garbage, and has the particle size of 75 mu m-4.75 mm; the waste autoclaved aerated concrete block powder is powder formed by crushing and grinding waste autoclaved aerated concrete blocks in building garbage, and the particle size is less than 75 mu m; and pre-wetting coarse and fine aggregates of the waste autoclaved aerated concrete blocks until the water content is 30%; the particle size of the polyphenyl granules is 1-6 mm.
The preparation method of the regenerated light partition board comprises the following steps:
(1) placing the shell 1 on the inner wall of a mould for preparing the regenerated light partition board;
(2) according to the proportion of the regenerative sound-insulation heat-preservation core material, adding P & O42.5R cement, water, an air entraining agent, a polycarboxylic acid high-performance water reducing agent, hydroxypropyl methyl cellulose and waste autoclaved aerated concrete block powder into a forced mixer, and uniformly stirring to obtain a slurry mixture; then pouring the coarse aggregate, the fine aggregate and the polyphenyl granules of the waste autoclaved aerated concrete block into the slurry mixture, and fully and uniformly stirring to obtain core material slurry;
(3) injecting the core material slurry into a mould provided with a shell plate, and vibrating and tamping the core material slurry by using vibrating equipment;
(4) and standing the vibrated and tamped test piece for 36 hours, then demoulding, placing the test piece in a curing shed for curing for 7 days after demoulding, then flatly laying and stacking the test piece in a storage yard with the stacking height of 1.5 meters, naturally curing for 28 days, and then taking the test piece out of the warehouse to obtain the regenerated light partition board.
The performance of the regenerated light partition board obtained in the embodiment is tested, and the test result is as follows: the fireproof performance reaches A-grade fireproof standard, the compressive strength is 3.6MPa, and the surface density is 100kg/m2。
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The regenerated sound-insulation heat-preservation core material slurry is characterized by comprising the following components in parts by mass:
the water content of the waste autoclaved aerated concrete block coarse aggregate and the water content of the waste autoclaved aerated concrete block fine aggregate are independently 15-40%.
2. The recycled sound-insulation heat-preservation core material slurry as claimed in claim 1, wherein the particle size of the coarse aggregate of the waste autoclaved aerated concrete block is greater than 4.75mm and less than or equal to 50 mm; the particle size of the fine aggregate of the waste autoclaved aerated concrete block is 75 mu m-4.75 mm; the particle size of the waste autoclaved aerated concrete block powder is less than 75 mu m.
3. The recycled sound-insulation heat-preservation core material slurry as claimed in claim 1, wherein the water reducing agent is a polycarboxylic acid high-performance water reducing agent, and the water reducing rate of the water reducing agent is not less than 25%.
4. The recycled soundproof and thermal insulation core material slurry according to claim 1, wherein the particle size of the polyphenyl particles is 1 to 8 mm.
5. Use of the recycled sound-insulating and heat-insulating core material slurry as claimed in any one of claims 1 to 4 in a lightweight partition wall panel.
6. The regenerated light partition board is characterized by comprising two outer shell plates which are arranged in parallel and a regenerated sound-insulation heat-preservation core material poured between the two outer shell plates;
the outer shell plate is a non-asbestos fiber reinforced calcium silicate plate; the regenerative sound-insulation and heat-preservation core material is prepared from the regenerative sound-insulation and heat-preservation core material slurry as claimed in any one of claims 1 to 4.
7. The recycled lightweight partition board according to claim 6, wherein the asbestos-free fiber-reinforced calcium silicate board has a thickness of 4 to 10 mm; the asbestos-free fiber reinforced calcium silicate board is of type A, and the breaking strength is R1-R5 grade.
8. The recycled light partition board of claim 6, wherein the recycled light partition board has a width of 500-700 mm, a height of 2300-3200 mm and a thickness of 60-150 mm.
9. The recycled light partition board of claim 6 or 8, wherein the recycled light partition board is provided with a central tenon and a central groove on two vertical sides; the central tenon is matched with the central groove; the width of the central tenon is 2-4 cm smaller than the thickness of the regenerative light partition wall, and the height of the central tenon is 2-8 cm.
10. The method for preparing the regenerated lightweight partition board of any one of claims 6 to 9, characterized by comprising the steps of:
(1) placing the shell plate on the inner wall of a partition plate mould, and then injecting the regenerated sound-insulation heat-preservation core material slurry between the shell plates for vibration tamping to obtain a regenerated light partition plate blank;
(2) and standing the regenerated light partition board blank for 24-72 hours, demoulding, and then maintaining to obtain the regenerated light partition board.
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