CN110372275A - A kind of imitative scoria light heat-insulating composite building block and its processing method - Google Patents
A kind of imitative scoria light heat-insulating composite building block and its processing method Download PDFInfo
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- CN110372275A CN110372275A CN201910662940.XA CN201910662940A CN110372275A CN 110372275 A CN110372275 A CN 110372275A CN 201910662940 A CN201910662940 A CN 201910662940A CN 110372275 A CN110372275 A CN 110372275A
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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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C1/00—Building elements of block or other shape for the construction of parts of buildings
- E04C1/40—Building elements of block or other shape for the construction of parts of buildings built-up from parts of different materials, e.g. composed of layers of different materials or stones with filling material or with insulating inserts
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C1/00—Building elements of block or other shape for the construction of parts of buildings
- E04C1/40—Building elements of block or other shape for the construction of parts of buildings built-up from parts of different materials, e.g. composed of layers of different materials or stones with filling material or with insulating inserts
- E04C1/41—Building elements of block or other shape for the construction of parts of buildings built-up from parts of different materials, e.g. composed of layers of different materials or stones with filling material or with insulating inserts composed of insulating material and load-bearing concrete, stone or stone-like material
-
- 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
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00293—Materials impermeable to liquids
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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
- 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
-
- 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
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent 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
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/54—Substitutes for natural stone, artistic materials or the like
- C04B2111/542—Artificial natural stone
-
- 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
- C04B2111/80—Optical properties, e.g. transparency or reflexibility
- C04B2111/82—Coloured 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
- C04B2201/30—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
Abstract
The present invention provides a kind of imitative scoria light heat-insulating composite building block and its processing methods, the building block includes two independences and the lightweight cellular concrete matrix being parallel to each other and the heat preservation core layer being folded between two lightweight cellular concrete matrixes, lightweight cellular concrete matrix is using chemical blowing-maintaining process preparation imitative natural scoria structure that irregular stomata is distributed with, and raw material includes cement, aggregate, active mixed material, foaming agent and air entraining agent；Processing method includes that heat preservation core layer is fixed in casting mold, then injects after the raw material of lightweight cellular concrete matrix is mixed in proportion, and is demoulded after chemical blowing, processes and is drying to obtain through maintenance, surface.The present invention, in combination with adjustment pore opening and pore-size distribution, makes its surface have unique and imitative natural scoria effect true to nature by chemical blowing-maintaining process preparation；And product lightweight, intensity are high, good heat insulating, excellent combination property, actual application prospect is wide.
Description
Technical field
The invention belongs to building wall field of material technology, it is related to the energy-saving building wall material with antique effect,
More particularly to a kind of imitative scoria light heat-insulating composite building block and its processing method.
Background technique
With the increasingly improvement in the rapid development of construction industry and city and villages and small towns looks, decoration of the people to construction wall
It is required that also higher and higher, lithotome is with its gorgeous natural speciality and good protective performance and by high praise；However, natural
Stone material complicated construction technique, cost is high, and in addition lithotome is influenced by factors such as the place of production and environment, and using and developing has centainly
Limitation.Therefore, the lower imitation stone of cost is by favor.
At this stage, imitation stone decorative buiding block of concrete application range is wider, and imitation stone decorative buiding block of concrete is mostly to utilize
The characteristics of plasticity and material of concrete are constituted carries out artistic processing during molding, its surface is made to have dicoration
Line style and texture texture, but this decorative buiding block of concrete poor thermal insulation property, and have both the imitation stone decoration of insulation and decoration effect
The research and development of concrete segment and related application are rarely reported.
In conclusion research and develop one kind imitates scoria light heat-insulating composite building block made of lightweight cellular concrete,
Not only there is decorative effect, low cost, but also have excellent thermal property, it can be achieved that decorative heat preservation is integrated, raising external wall system
Globality and stability, be not only able to satisfy the requirement of national different regions building energy conservation, but also can respond national green building energy conservation
Policy instruction is the key technical problem of those skilled in the art's urgent need to resolve.
Summary of the invention
It is insufficient in view of the defects existing in the prior art, the present invention provides a kind of imitative scoria light heat-insulating composite building block and
Its processing method.
The present invention adopts the following technical scheme:
A kind of imitative scoria light heat-insulating composite building block, including two independences and the lightweight cellular concrete base that is parallel to each other
Body and the heat preservation core layer being folded between two lightweight cellular concrete matrixes, the lightweight cellular concrete matrix are to adopt
With chemical blowing-maintaining process preparation imitative natural scoria structure that irregular stomata is distributed with, the light porous coagulation
The raw material of soil matrix body includes cement, aggregate, active mixed material, foaming agent and air entraining agent.
Specifically, imitative scoria light heat-insulating composite building block surface provided by the present invention has the natural fire of Natural
Mountain slag stomata decorative textures can replace lithotome, economize on resources, reduce cost, due to being made of chemical foaming technology,
It is light porous, therefore there is excellent thermal property, it is the high-performance building wall material for integrating heat preservation, decoration, can solves
Certainly existing external thermal insulation system makees decorative cover after needing, many and diverse and poor durability technical problem of constructing.
In the above-mentioned technical solutions, the active mixed material be it is a kind of in flyash, silicon ash, ground slag and kaolin or
A variety of, the air entraining agent is one or more in rosin tree lipid/alkyl benzene sulfonate/fatty alcohol sulfonate class.
Further, in the above-mentioned technical solutions, the additional amount of the active mixed material accounts for the lightweight cellular concrete
The 15-30wt% of the raw material total amount of matrix, the air entraining agent are the alkyl benzene sulfonate air entraining agent and rouge that mass ratio is 1:1-2
The mixture of fat alcohol Sulfonates air entraining agent, the additional amount of the air entraining agent are 0.02-0.078 times of the active mixed material.
Still further, in the above-mentioned technical solutions, the porosity of the lightweight cellular concrete matrix is 0.1-3mm,
And size is respectively 63-67%, 24-32% and 4-9% for the proportion of the stomata of 0.1-0.5mm, 0.5-1mm and 1-3mm.
In the above-mentioned technical solutions, the heat preservation core layer is one of EPS, XPS and cement insulation board, and described
The thermal coefficient of heat preservation core layer is less than 0.050W/ (mK).
Preferably, in the above-mentioned technical solutions, the heat preservation core layer is compound with a thickness of the imitative scoria light thermal-insulation
0.18-0.24 times of building block overall thickness, and in two lightweight cellular concrete matrixes, one of lightweight cellular concrete
The thickness of matrix is 2.4-2.75 times of the thickness of the lightweight cellular concrete matrix of another.
Further, in the above-mentioned technical solutions, the lightweight cellular concrete matrix includes the raw material of following parts by weight:
30-40 parts of cement, 25-40 parts of aggregate, 15-30 parts of active mixed material, 0.3-2.2 parts of air entraining agent, 0.45-0.80 parts of foaming agent and
24-30 parts of water, wherein the partial size of the aggregate is 0.83-1.7mm.
Still further, in the above-mentioned technical solutions, in parts by weight, the raw material of the lightweight cellular concrete matrix is also
Including 0.5-1 parts and modifying agent 0.8-1.5 parts of inorganic pigment.
Further, in the above-mentioned technical solutions, the heat preservation core layer and two lightweight cellular concrete matrixes
The inside uniform vertically arranged dovetail groove of one row of arrangement respectively, the lightweight cellular concrete of the heat preservation core layer and two sides
Matrix is engaged by dovetail groove joggle.
Another aspect of the present invention additionally provides the processing method of above-mentioned imitative scoria light heat-insulating composite building block, including, it will
The heat preservation core layer is fixed in casting mold, then mixes the raw material of the lightweight cellular concrete matrix in proportion
Injection after uniformly, demoulds after chemical blowing, then successively by maintenance, surface processing and it is dry after to obtain the final product.
In the above-mentioned technical solutions, the maintenance is natural curing or steam curing, and the steam curing is at 40-90 DEG C
Lower maintenance 4-12h, to 25-28 days, the natural curing was to conserve 25-28 days under field conditions (factors) for subsequent natural curing.
In the above-mentioned technical solutions, the surface is processed as the outside difference of two lightweight cellular concrete matrixes
It is ground 1-3mm.
Compared with prior art, the present invention has the advantage that
(1) present invention prepares imitative scoria light heat-insulating composite building block by chemical blowing-maintaining process, by adjusting gas
Hole size and pore-size distribution make block surfaces have the decorative effect of natural scoria, and decorative effect is unique and imitates natural volcano
Slag effect is true to nature；
(2) present invention is light using matrix and the imitative scoria of the compound composition of heat preservation core layer using lightweight cellular concrete as matrix
Vacuum composite block, both matrix and heat preservation core layer all have good thermal property, by adjusting lightweight cellular concrete
Dry apparent density and heat preservation core layer thickness, the heat transfer coefficient of imitative scoria light heat-insulating composite building block can be made to meet China not
With regional architecture energy conservation standard；
(3) imitative scoria light heat-insulating composite building block masonry provided by the present invention is not required to remake decoration at exterior wall after wall
Face does not need to remake external thermal insulation yet, has the characteristics that high lightweight, intensity, good heat insulating and durable and good application property, is
A kind of high-performance building wall material of heat preservation decoration integrative；
(4) dry apparent density of imitative scoria light heat-insulating composite building block finished product provided by the present invention is 500-800kg/
m3, block strength grade MU3.5 or more, heat transfer coefficient is≤0.45W/ (mK), good decorating effect, while being had good anti-
Infiltration, noninflammability and durability.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of imitative scoria light heat-insulating composite building block obtained in the embodiment of the present invention 1；
Fig. 2 is the surface topography map of imitative scoria light heat-insulating composite building block obtained in the embodiment of the present invention 1.
Specific embodiment
Combined with specific embodiments below, specific embodiments of the present invention will be described in further detail.
Following embodiment is merely to illustrate the present invention, the protection scope being not intended to limit the invention.
Experimental method used in following embodiment is conventional method unless otherwise specified.
Material used in following embodiment, reagent etc., are commercially available unless otherwise specified.
Embodiment 1
The embodiment of the invention provides a kind of imitative scoria light heat-insulating composite building block, specific process includes:
Heat insulation core material with a thickness of 48mm EPS of the two sides with dovetail groove is fixed in a mold, then in EPS heat insulation core material
Both sides are poured lightweight cellular concrete slurry, and lightweight cellular concrete base is successively formed after chemical blowing, demoulding and maintenance
Finally the imitative scoria light heat-insulating composite building block of 240mm thickness can be made through surface processing and drying again in body, specific to tie
Structure is as shown in Figure 1.
Specifically, the EPS heat insulation core material is fixed on the middle position of mold, i.e. the lightweight on EPS heat insulation core material both sides is more
The thickness of hole concrete substrate is equal.
Specifically, above-mentioned lightweight cellular concrete matrix includes the raw material of following parts by weight:
Specifically, the modifying agent is high-efficiency water-reducing agent of poly-carboxylic acid, aluminum sulfate, calcium chloride, sodium sulphate, dodecyl sulphate
Sodium, neopelex, polypropylene fibre and stearic acid ammonia compounding, are specifically often carried out with ratio in those skilled in the art
Compounding.
Before casting, each raw material is weighed according to the above ratio, is uniformly mixed.
In detail, the process of the maintenance is specially natural curing 28 days.
In detail, the method for the surface processing is that block surfaces are polished 1-3mm, keeps surface pores exposed, shows
The decorative effect of scoria.
In detail, the drying process is, dry under field conditions (factors) to building block relative moisture content reach respective country or
Subject to professional standard.
The surface topography of the obtained imitative scoria light heat-insulating composite building block of observation, as shown in Fig. 2, imitative obtained by discovery
Scoria light heat-insulating composite building block stomata is in irregular shape, is in oblong, not of uniform size, through counting, the porosity is
33.8%, and pore opening is 0.1-3mm, wherein the stomata institute accounting of pore opening 0.1-0.5mm, 0.5-1mm and 1-3mm
Example is respectively 67%, 24% and 9%, and it is good to imitate scoria decorative effect.
According to concerned countries standard and professional standard to the imitative scoria light heat-insulating composite building block of the embodiment of the present invention into
Row detection, concrete outcome are that density rating is 600 grades, and strength grade reaches MU3.5, and heat transfer coefficient is 0.44W/ (m2·K)。
Embodiment 2
The embodiment of the invention provides a kind of imitative scoria light heat-insulating composite building block, specific process includes:
Heat insulation core material with a thickness of 56mm XPS of the two sides with dovetail groove is fixed in a mold, then in XPS heat insulation core material
Both sides are poured lightweight cellular concrete slurry, and lightweight cellular concrete base is successively formed after chemical blowing, demoulding and maintenance
Finally the imitative scoria light heat-insulating composite building block of 280mm thickness can be made through surface processing and drying again in body.
Specifically, the EPS heat insulation core material is fixed on the middle position of mold, i.e. the lightweight on EPS heat insulation core material both sides is more
The thickness of hole concrete substrate is equal.
Specifically, above-mentioned lightweight cellular concrete matrix includes the raw material of following parts by weight:
Specifically, the modifying agent is high-efficiency water-reducing agent of poly-carboxylic acid, aluminum sulfate, calcium chloride, sodium sulphate, dodecyl sulphate
Sodium, neopelex, polypropylene fibre and stearic acid ammonia compounding, are specifically often carried out with ratio in those skilled in the art
Compounding.
Before casting, each raw material is weighed according to the above ratio, is uniformly mixed.
In detail, the process of the maintenance is specially natural curing 28 days.
In detail, the method for the surface processing is that block surfaces are polished 1-3mm, keeps surface pores exposed, shows
The decorative effect of scoria.
In detail, the drying process is, dry under field conditions (factors) to building block relative moisture content reach respective country or
Subject to professional standard.
The surface topography of the obtained imitative scoria light heat-insulating composite building block of observation, finds obtained imitative scoria lightweight
Heat insulating composite building block stomata is in irregular shape, is in oblong, not of uniform size, through counting, the porosity 32.5%, and stomata is big
Small is 0.1-3mm, wherein the stomata proportion of pore opening 0.1-0.5mm, 0.5-1mm and 1-3mm is respectively 63.5%,
28% and 8.5%, it is good to imitate scoria decorative effect.
According to concerned countries standard and professional standard to the imitative scoria light heat-insulating composite building block of the embodiment of the present invention into
Row detection, concrete outcome are that density rating is 600 grades, and strength grade reaches MU5, and heat transfer coefficient is 0.42W/ (m2·K)。
Embodiment 3
The embodiment of the invention provides a kind of imitative scoria light heat-insulating composite building block, specific process includes:
Heat insulation core material with a thickness of 48mm EPS of the two sides with dovetail groove is fixed in a mold, then in EPS heat insulation core material
Both sides are poured lightweight cellular concrete slurry, and lightweight cellular concrete base is successively formed after chemical blowing, demoulding and maintenance
Finally the imitative scoria light heat-insulating composite building block of 240mm thickness can be made through surface processing and drying again in body.
Specifically, the EPS heat insulation core material is fixed on the non-intermediate positions of mold, and in detail, EPS heat insulation core material side is light
2.5 times of the thickness with a thickness of other side lightweight cellular concrete matrix of matter celluar concrete matrix.
Specifically, above-mentioned lightweight cellular concrete matrix includes the raw material of following parts by weight:
Specifically, the modifying agent is high-efficiency water-reducing agent of poly-carboxylic acid, aluminum sulfate, calcium chloride, sodium sulphate, dodecyl sulphate
Sodium, neopelex, polypropylene fibre and stearic acid ammonia compounding, are specifically often carried out with ratio in those skilled in the art
Compounding.
Before casting, each raw material is weighed according to the above ratio, is uniformly mixed.
In detail, the process of the maintenance is specially natural curing 28 days.
In detail, the method for the surface processing is that block surfaces are polished 1-3mm, keeps surface pores exposed, shows
The decorative effect of scoria.
In detail, the drying process is, dry under field conditions (factors) to building block relative moisture content reach respective country or
Subject to professional standard.
The surface topography of the obtained imitative scoria light heat-insulating composite building block of observation, finds obtained imitative scoria lightweight
Heat insulating composite building block stomata is in irregular shape, is in oblong, not of uniform size, through counting, the porosity 38%, and pore opening
For 0.1-3mm, wherein the stomata proportion of pore opening 0.1-0.5mm, 0.5-1mm and 1-3mm are respectively 65%, 30%
With 5%, it is excellent to imitate scoria decorative effect.
According to concerned countries standard and professional standard to the imitative scoria light heat-insulating composite building block of the embodiment of the present invention into
Row detection, concrete outcome are that density rating is 600 grades, and strength grade reaches MU3.5, and heat transfer coefficient is 0.38W/ (m2·K)。
Finally, being not intended to limit the scope of the present invention the above is only preferred embodiment of the invention.It is all this
Within the spirit and principle of invention, any modification, equivalent replacement, improvement and so on should be included in protection model of the invention
Within enclosing.
Claims (10)
1. a kind of imitative scoria light heat-insulating composite building block, which is characterized in that including two independences and the lightweight that is parallel to each other it is more
Hole concrete substrate and the heat preservation core layer being folded between two lightweight cellular concrete matrixes, the light porous coagulation
Soil matrix body is the imitative natural scoria structure that irregular stomata is distributed with prepared using chemical blowing-maintaining process, described light
The raw material of matter celluar concrete matrix includes cement, aggregate, active mixed material, foaming agent and air entraining agent.
2. imitative scoria light heat-insulating composite building block according to claim 1, which is characterized in that the active mixed material is
One or more in flyash, silicon ash, ground slag and kaolin, the air entraining agent is rosin tree lipid, alkylbenzene sulfonate
It is one or more in class and fatty alcohol sulfonate class.
3. imitative scoria light heat-insulating composite building block according to claim 2, which is characterized in that the active mixed material
Additional amount accounts for the 15-30wt% of the raw material total amount of the lightweight cellular concrete matrix, and the air entraining agent is that mass ratio is 1:1-2
Alkyl benzene sulfonate air entraining agent and fatty alcohol sulfonate class air entraining agent mixture, the additional amount of the air entraining agent is described
0.02-0.078 times of active mixed material.
4. imitative scoria light heat-insulating composite building block according to claim 2 or 3, which is characterized in that described light porous
The porosity of concrete substrate is 32-42%, pore opening 0.1-3mm, and size is 0.1-0.5mm, 0.5-1mm and 1-
The proportion of the stomata of 3mm is respectively 63-67%, 24-32% and 4-9%.
5. imitative scoria light heat-insulating composite building block according to claim 1, which is characterized in that the heat preservation core layer is
One of EPS, XPS and cement insulation board, and the thermal coefficient of the heat preservation core layer is less than 0.050W/ (mK)；
Preferably, the 0.18-0.24 with a thickness of the imitative scoria light heat-insulating composite building block overall thickness of the heat preservation core layer
Times, and in two lightweight cellular concrete matrixes, the thickness of one of lightweight cellular concrete matrix is another
2.4-2.75 times of thickness of lightweight cellular concrete matrix.
6. imitative scoria light heat-insulating composite building block according to claim 1-5, which is characterized in that the lightweight
Celluar concrete matrix includes the raw material of following parts by weight: 30-40 parts of cement, 25-40 parts of aggregate, 15-30 parts of active mixed material,
0.3-2.2 parts of air entraining agent, 0.45-0.80 parts of foaming agent and 24-30 parts of water, wherein the partial size of the aggregate is 0.38-
1.70mm。
7. imitative scoria light heat-insulating composite building block according to claim 6, which is characterized in that in parts by weight, described
The raw material of lightweight cellular concrete matrix further includes 0.5-1 parts and modifying agent 0.8-1.5 parts of inorganic pigment.
8. imitative scoria light heat-insulating composite building block according to claim 1-7, which is characterized in that the heat preservation
The vertically arranged dovetail groove of the inside of sandwich layer and two lightweight cellular concrete matrixes difference one row of uniform arrangement, the guarantor
Warm sandwich layer is engaged with the lightweight cellular concrete matrix of two sides by dovetail groove joggle.
9. a kind of processing method of imitative scoria light heat-insulating composite building block described in claim 1, which is characterized in that including,
The heat preservation core layer is fixed in casting mold, is then mixed the raw material of the lightweight cellular concrete matrix in proportion
Injection after closing uniformly, demoulds after chemical blowing, then successively by maintenance, surface processing and it is dry after to obtain the final product.
10. processing method according to claim 9, which is characterized in that
The maintenance is natural curing or steam curing, and the steam curing is to conserve 4-12h at 40-90 DEG C, then natural
To 25-28 days, the natural curing was to conserve 25-28 days under field conditions (factors) for maintenance；
And/or the surface is processed as the outside of two lightweight cellular concrete matrixes being ground 1-3mm respectively.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111923313A (en) * | 2020-08-15 | 2020-11-13 | 江龙 | Preparation method of building prefabricated composite building block |
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Application publication date: 20191025 |