CN111302720A - Concrete bundle superposed thermal insulation material and preparation method thereof - Google Patents

Concrete bundle superposed thermal insulation material and preparation method thereof Download PDF

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Publication number
CN111302720A
CN111302720A CN202010297792.9A CN202010297792A CN111302720A CN 111302720 A CN111302720 A CN 111302720A CN 202010297792 A CN202010297792 A CN 202010297792A CN 111302720 A CN111302720 A CN 111302720A
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air
wallboard
thermal insulation
concrete
bundle
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CN111302720B (en
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黄书亮
张纪会
魏斯胜
王秀杰
王忠民
林凯华
吴真真
张雨
李宁
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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
    • 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
    • C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
    • C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
    • 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

Abstract

The invention discloses a concrete bundle superposed thermal insulation material which comprises the following raw materials in parts by weight: 20-40% of furnace slag, 20-40% of fly ash, 20-40% of biomass ash, 12-19% of sawdust, 3-13% of old clothes fiber, 13-40% of cement, 5-15% of lightweight aggregate and 2-5% of additive, wherein the concrete bundle superposed thermal insulation material consists of an inner wallboard, an outer wallboard, a thermal insulation partition board, an air bundle, a groove plate, an installation angle, a bundle end plug and concrete, the surface of the air bundle is a matte surface, and the thermal insulation partition board is arranged between the inner wallboard and the outer wallboard. According to the invention, the air beams are arranged in a staggered manner in multiple layers, so that the length of a heat bridge is increased, the thermal resistance of the heat-insulation building material can be increased, the heat transfer coefficient of the heat-insulation building material is reduced, the strength of the produced heat-insulation building material is high through a special formula, an inorganic material is adopted to form A-grade fireproof smokeless and nontoxic, and the environment-friendly building material is economical and environment-friendly to manufacture by utilizing resources such as industrial solid wastes and old clothing fibers.

Description

Concrete bundle superposed thermal insulation material and preparation method thereof
Technical Field
The invention relates to the technical field of building materials, in particular to a concrete bundle superposed thermal insulation material and a preparation method thereof.
Background
Building thermal insulation materials are one of important materials for promoting building energy conservation, and generally fall into three categories: i.e., inorganic, organic, and composite thermal insulation materials. Most of them are used organic and inorganic type heat insulating materials. In China, building energy-saving work is implemented from 1986, and in the beginning, inorganic heat-insulating materials such as rock wool, glass wool, expanded perlite, foamed concrete, foam glass and the like are mainly used. With the gradual improvement of the energy-saving standard from 30% and 50% to 65% and 75%, GB/T51350-2019 ' near-zero energy consumption building technical standard ' is issued by the Ministry of housing and urban-rural construction of the people's republic of China and the national market supervision and management headquarter in 24.1.2019, and is implemented in 1.9.2019, 80 energy-saving standard is issued by the Ministry of Beijing city of 2019-12-26, which is the energy-saving design standard of the fifth step housing construction in China, the energy-saving rate reaches more than 80%, and all the energy-saving standard is borne by the energy conservation of the enclosure structure.
The defects and shortcomings of the prior art are as follows: the organic heat-insulating material and the organic-inorganic composite heat-insulating material cannot overcome the fire-proof safety problem; inorganic cotton, foamed concrete, foam glass and the like in the initial stage have high heat conductivity coefficient, and with the improvement of the energy-saving standard, the thickness of the heat-insulating material is too large, so that the using area of a building is seriously influenced, and the traditional living habit is not met.
Disclosure of Invention
The invention aims to provide a concrete bundle superposed thermal insulation material and a preparation method thereof, which aim to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a concrete bundle laminated thermal insulation material comprises the following raw materials in parts by weight: 20-40% of furnace slag, 20-40% of fly ash, 20-40% of biomass ash, 12-19% of sawdust, 3-13% of old clothes fiber, 13-40% of cement, 5-15% of lightweight aggregate and 2-5% of additive, wherein the concrete bundle superposed thermal insulation material consists of an inner wallboard, an outer wallboard, a thermal insulation partition board, an air bundle, a groove plate, an installation angle, a bundle end plug and concrete, the surface of the air bundle is a matte surface, and the thermal insulation partition board is arranged between the inner wallboard and the outer wallboard.
A preparation method of a concrete bundle laminated thermal insulation material comprises the following steps:
s1, sealing the air beams in the heat-insulation building material by using concrete to form a narrow space, wherein air does not have convection; the thickness of the air layer and the air heat conductivity coefficient data are obtained through a plurality of experiments, and are shown in the following table:
thickness of air layer 2 3 4 5 6 7 8 9
Coefficient of thermal conductivity 0.024 0.024 0.024 0.024 0.024 0.024 0.025 0.025
Thickness of air layer 10 11 12 13 14 15 16 17
Coefficient of thermal conductivity 0.025 0.026 0.026 0.027 0.028 0.028 0.029 0.030
Thickness of air layer 18 19 20 21 22 23 24 25
Coefficient of thermal conductivity 0.031 0.032 0.033 0.034 0.035 0.036 0.037 0.038
Thickness of air layer 26 27 28 29 30 31 32 33
Coefficient of thermal conductivity 0.039 0.041 0.042 0.043 0.045 0.046 0.047 0.049
Thickness of air layer 34 35 36 37 38 39 40 41
Coefficient of thermal conductivity 0.050 0.052 0.053 0.054 0.056 0.057 0.059 0.060
Determining the thickness of the air layer of the air beam to be 2-41mm according to the experimental result;
s2, sealing two ends of the air beam by using beam end plugs to eliminate convection between the air beam and the outside, wherein the beam end plugs adopt corresponding low-heat-conduction materials, the two ends of the plugs are provided with assembly slopes, the middle of the plugs is a sealing straight surface, and the plugs are assembled to form interference connection;
s3, producing the inner wallboard, the outer wallboard, the heat-insulating partition board and the groove board by adopting a continuous extrusion process and synchronous cutting, feeding and stirring materials according to a formula by adopting a screw conveyor, extruding the materials through an extruder, passing through a die for skimming the interface shape of the wallboard, and continuously conveying the materials forwards through a conveying belt;
and S4, when the wallboard conveying distance reaches the preset wallboard length, starting the cutting machine, enabling the cutting head to synchronously move along with the wallboard, stopping cutting, enabling the cutting head to return to the original position after the cutting is finished, continuously conveying the wallboard forwards, entering a curing bin for curing, and inspecting and warehousing after the wallboard reaches the standard.
Preferably, the surface of the air beam is a rough surface;
preferably, the thickness of the air layer of the air beam is determined to be between 2 and 41 mm;
preferably, each air cavity is arranged in a staggered manner from the upper layer to the lower layer.
Compared with the prior art, the invention has the beneficial effects that:
(1) the material formula of the invention ensures that the concrete has lower heat conductivity coefficient (0.35-0.1) on the basis of keeping the due strength (20-5 MPa);
(2) according to the invention, the air beams are arranged in a multi-layer staggered manner, so that the length of a heat bridge is increased, the thermal resistance of the heat-insulation building material can be increased, the heat transfer coefficient of the heat-insulation building material is reduced, the strength of the produced heat-insulation building material is high through a special formula, and an inorganic material is adopted to form A-grade fireproof, smokeless and nontoxic;
(3) the invention utilizes the resources such as industrial solid waste, furnace slag, fly ash, biological ash, sawdust, wood wool, old clothing fiber and the like to manufacture green building materials, is economical and environment-friendly, and realizes that the plate has good heat transfer coefficient under the condition of smaller thickness by reducing the heat conductivity coefficient of concrete and overlapping air beams and multi-layer interlayer dislocation of the air beams;
(4) the invention adopts the continuous extrusion process and the synchronous cutting process, has high mechanical automation degree and high production efficiency, increases the length of a heat bridge by arranging each layer of air cavity and the upper and lower layers in a staggered way, effectively improves the heat insulation performance of the air beam heat-insulation enclosure system, and simultaneously enhances the strength of the system.
Drawings
FIG. 1 is a front view of the insulation of the present invention;
FIG. 2 is a cross-sectional view taken along line E-E of the thermal insulation material of the present invention.
In the figure: 1 air beam, 2 external wall panels, 3 heat-insulating partition boards, 4 groove plates, 5 installation angles, 6 internal wall panels, 7 concrete and 8 beam end plugging.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
a concrete bundle laminated thermal insulation material comprises the following raw materials in parts by weight: 20% of furnace slag, 20% of fly ash, 20% of biomass ash, 12% of sawdust, 3% of old clothes fiber, 13% of cement, 5% of lightweight aggregate and 2% of additive, wherein the lightweight aggregate is perlite, vitrified micro bubbles or vermiculite, the concrete bundle superposed thermal insulation material is composed of an inner wall plate 6, an outer wall plate 2, a thermal insulation partition plate 3, an air bundle 1, a groove plate 4, a mounting angle 5, a bundle end plug 8 and concrete 7, the surface of the air bundle 1 is a matte surface, and the thermal insulation partition plate 3 is arranged between the inner wall plate 6 and the outer wall plate 2.
A preparation method of a concrete bundle laminated thermal insulation material comprises the following steps:
s1, sealing a plurality of air beams 1 in a heat-insulation building material by using concrete 7, wherein the surfaces of the air beams 1 are rough surfaces, and the thickness of the air layers of the air beams 1 is determined to be 16mm, so that the air beams 1 form a narrow space, and air does not have convection; the thickness of the air layer and the air heat conductivity coefficient data are obtained through a plurality of experiments, and are shown in the following table:
thickness of air layer 2 3 4 5 6 7 8 9
Coefficient of thermal conductivity 0.024 0.024 0.024 0.024 0.024 0.024 0.025 0.025
Thickness of air layer 10 11 12 13 14 15 16 17
Coefficient of thermal conductivity 0.025 0.026 0.026 0.027 0.028 0.028 0.029 0.030
Thickness of air layer 18 19 20 21 22 23 24 25
Coefficient of thermal conductivity 0.031 0.032 0.033 0.034 0.035 0.036 0.037 0.038
Thickness of air layer 26 27 28 29 30 31 32 33
Coefficient of thermal conductivity 0.039 0.041 O.042 0.043 0.045 0.046 0.047 0.049
Thickness of air layer 34 35 36 37 38 39 40 41
Coefficient of thermal conductivity 0.050 0.052 0.053 0.054 0.056 0.057 0.059 0.060
Determining the thickness of an air layer of the air beam to be 16mm according to the experimental result;
s2, sealing two ends of the air beam 1 by using beam end plugs 8 to eliminate convection between the air beam 1 and the outside, wherein the beam end plugs 8 adopt corresponding low heat conduction materials, the low heat conduction materials can be materials comprising the formula, modified polyurethane or rock wool and the like, the two ends of the plugs are provided with assembly slopes, the middle of the plugs is a sealing straight surface, and interference connection is formed by assembly;
s3, an inner wall plate 6, an outer wall plate 2, a heat-insulating partition plate 3 and a groove plate 4 are produced by adopting a continuous extrusion process and synchronous cutting, a screw conveyor is adopted for feeding according to a formula, stirring and extruding through an extruder, the materials pass through a die for skimming the skin of the interface shape of the wall plate, and the materials are continuously conveyed forwards through a conveying belt;
and S4, when the wallboard conveying distance reaches the preset wallboard length, starting the cutting machine, enabling the cutting head to synchronously move along with the wallboard, stopping cutting, enabling the cutting head to return to the original position after the cutting is finished, continuously conveying the wallboard forwards, entering a curing bin for curing, and inspecting and warehousing after the wallboard reaches the standard.
Example two:
a concrete bundle laminated thermal insulation material comprises the following raw materials in parts by weight: 40% of furnace slag, 40% of fly ash, 40% of biomass ash, 19% of sawdust, 13% of old clothes fiber, 40% of cement, 15% of lightweight aggregate and 5% of additive, wherein the concrete bundle laminated thermal insulation material consists of an inner wallboard 6, an outer wallboard 2, a thermal insulation partition plate 3, an air bundle 1, a groove plate 4, a mounting angle 5, a bundle end plug 8 and concrete 7, the surface of the air bundle 1 is a rough surface, and the thermal insulation partition plate 3 is arranged between the inner wallboard 6 and the outer wallboard 2.
A preparation method of a concrete bundle laminated thermal insulation material comprises the following steps:
s1, sealing the air beams 1 in the heat-insulation building material by using concrete 7, so that the air beams 1 form a narrow space and air does not have convection; the thickness of the air layer and the air heat conductivity coefficient data are obtained through a plurality of experiments, and are shown in the following table:
thickness of air layer 2 3 4 5 6 7 8 9
Coefficient of thermal conductivity 0.024 0.024 0.024 0.024 0.024 0.024 0.025 0.025
Thickness of air layer 10 11 12 13 14 15 16 17
Coefficient of thermal conductivity 0.025 0.026 0.026 0.027 0.028 0.028 0.029 0.030
Thickness of air layer 18 19 20 21 22 23 24 25
Coefficient of thermal conductivity 0.031 0.032 0.033 0.034 0.035 0.036 0.037 0.038
Thickness of air layer 26 27 28 29 30 31 32 33
Coefficient of thermal conductivity 0.039 0.041 0.042 0.043 0.045 0.046 0.047 0.049
Thickness of air layer 34 35 36 37 38 39 40 41
Coefficient of thermal conductivity 0.050 0.052 0.053 0.054 0.056 0.057 0.059 0.060
Determining the thickness of the air layer of the air beam to be 20mm according to the experimental result;
s2, sealing two ends of the air beam 1 by using beam end plugs 8 to eliminate convection between the air beam 1 and the outside, wherein the beam end plugs 8 adopt corresponding low heat conduction materials, the low heat conduction materials can be materials comprising the formula, modified polyurethane or rock wool and the like, the two ends of the plugs are provided with assembly slopes, the middle of the plugs is a sealing straight surface, and interference connection is formed by assembly;
s3, an inner wall plate 6, an outer wall plate 2, a heat-insulating partition plate 3 and a groove plate 4 are produced by adopting a continuous extrusion process and synchronous cutting, a screw conveyor is adopted for feeding according to a formula, stirring and extruding through an extruder, the materials pass through a die for skimming the skin of the interface shape of the wall plate, and the materials are continuously conveyed forwards through a conveying belt;
and S4, when the wallboard conveying distance reaches the preset wallboard length, starting the cutting machine, enabling the cutting head to synchronously move along with the wallboard, stopping cutting, enabling the cutting head to return to the original position after the cutting is finished, continuously conveying the wallboard forwards, entering a curing bin for curing, and inspecting and warehousing after the wallboard reaches the standard.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The concrete bundle laminated thermal insulation material is characterized by comprising the following raw materials in parts by weight: 20-40% of furnace slag, 20-40% of fly ash, 20-40% of biomass ash, 12-19% of sawdust, 3-13% of old clothes fibers, 13-40% of cement, 5-15% of lightweight aggregate and 2-5% of additives, wherein the concrete bundle laminated thermal insulation material consists of an inner wallboard (6), an outer wallboard (2), a thermal insulation partition plate (3), an air bundle (1), a groove plate (4), a mounting angle (5), a bundle end plug (8) and concrete (7), the surface of the air bundle (1) is a rough surface, and the thermal insulation partition plate (3) is installed between the inner wallboard (6) and the outer wallboard (2).
2. A preparation method of a concrete bundle laminated thermal insulation material is characterized by comprising the following steps:
s1, sealing the air beams (1) in the heat-insulation building material by using concrete (7), so that the air beams (1) form a narrow space and air does not have convection;
s2, sealing two ends of the air beam (1) by using beam end plugs (8) to eliminate convection between the air beam (1) and the outside, wherein the beam end plugs (8) adopt corresponding low heat conduction materials, assembling slopes are arranged at two ends of the plugs, a sealing straight surface is arranged in the middle of the plugs, and interference connection is formed by assembling;
s3, an inner wallboard (6), an outer wallboard (2), a heat-insulating partition board (3) and a groove plate (4) are produced by adopting a continuous extrusion process and synchronous cutting, a screw conveyor is adopted for feeding according to a formula, stirring and extruding through an extruder, the materials pass through a die matched with the shape of the interface of the wallboard, and the materials are continuously conveyed forwards through a conveying belt;
and S4, when the wallboard conveying distance reaches the preset wallboard length, starting the cutting machine, enabling the cutting head to synchronously move along with the wallboard, stopping cutting, enabling the cutting head to return to the original position after the cutting is finished, continuously conveying the wallboard forwards, entering a curing bin for curing, and inspecting and warehousing after the wallboard reaches the standard.
3. The method for preparing the concrete beam laminated thermal insulation material according to claim 2, which is characterized in that: the surface of the air beam (1) is a rough surface.
4. The method for preparing the concrete beam laminated thermal insulation material according to claim 2, which is characterized in that: the thickness of the air layer of the air beam is determined to be between 2 and 41 mm.
5. The method for preparing the concrete beam laminated thermal insulation material according to claim 2, which is characterized in that: each layer of air cavity is arranged with the upper layer and the lower layer in a staggered way.
CN202010297792.9A 2020-04-16 2020-04-16 Preparation method of concrete bundle laminated thermal insulation material Active CN111302720B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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WO2008126125A2 (en) * 2007-04-16 2008-10-23 Caccarelli Ulderico Autoclaved aerated concrete with reduced shrinkage for realising building blocks and/or floors and/or reinforced and not reinforced panels
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2688790Y (en) * 2004-02-23 2005-03-30 金立虎 High-strength, thermal and sound insulative porous concrete bricks
CN1651683A (en) * 2005-01-26 2005-08-10 清华大学 Plant straw fiber reinforced light hollow slat
WO2008126125A2 (en) * 2007-04-16 2008-10-23 Caccarelli Ulderico Autoclaved aerated concrete with reduced shrinkage for realising building blocks and/or floors and/or reinforced and not reinforced panels
CN101597940A (en) * 2009-07-10 2009-12-09 无锡惠山工程实业有限公司 The warming plate of concrete exterior wall
CN102345342A (en) * 2011-06-28 2012-02-08 程松林 Concrete condensing column composite side fascia and manufacture method thereof

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Title
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