CN110156492A - The method and product of air entrained concrete are prepared based on microwave precuring technology of getting angry - Google Patents
The method and product of air entrained concrete are prepared based on microwave precuring technology of getting angry Download PDFInfo
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- CN110156492A CN110156492A CN201910471311.9A CN201910471311A CN110156492A CN 110156492 A CN110156492 A CN 110156492A CN 201910471311 A CN201910471311 A CN 201910471311A CN 110156492 A CN110156492 A CN 110156492A
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/02—Selection of the hardening environment
- C04B40/0204—Selection of the hardening environment making use of electric or wave energy or particle radiation
- C04B40/0213—Electromagnetic waves
- C04B40/0218—Microwaves
Abstract
The method and product of air entrained concrete are prepared based on microwave precuring technology of getting angry the invention discloses a kind of, belong to the field of building materials.This method uses 1.5~2.5 parts of calcareous material, 5.5~6.5 parts of siliceous material, 0.3~0.5 part of preparing dry of steam pressure auxiliary material；1~2 part of gel rubber material, group of getting angry is divided into dry powder+gel total amount 0.1%~0.2%, and foam stabilizing group is divided into dry powder+gel total amount 0.2%~0.7%；Water is dry powder amount 50%~60%；Be mixed with calcium-silicon mixed slurry, by the casting of calcium-silicon mixed slurry, microwave it is quiet stop paying out gas-precuring, steam-pressing aero-concrete is made in demoulding, cutting, the process flow of steam press maintenance.The present invention makes up and gets angry the problems such as poor with green body stability caused by carbide slag or calcium hydroxide substitution quick lime, waste utilization rate is high, and blank structure is stablized, and stomata is uniform, can be widely applied to construction wall engineering by microwave heating slurry.
Description
Technical field
The invention belongs to the field of building materials, more particularly, to one kind based on microwave get angry the preparation of precuring technology plus
The method and product of gas concrete.
Background technique
With the rapid development of building trade, the energy consumption of construction industry is also gradually going up, and has been approached whole society's total energy at present
The 1/3 of consumption, meanwhile, having about 1/3 energy consumption in building use process is scattered and disappeared from wall.Therefore, compel in face of building energy conservation
It is essential and asks, importance of the comprehensive performance of wall in building energy conservation is self-evident.In the production of New Energy Saving Wall Materials
The high energy consumption of Cheng Zhong, raw material and preparation process, utilization rate of solid waste is low, leads to energy-saving materials for wall higher cost, most
Cause building energy conservation only to rest on design eventually, can not but implement to using upper.
Steam-pressing aero-concrete is as most widely used novel energy-conserving filling materials for wall body in building at present, it is most at present
It is 65 DEG C -80 DEG C in quiet gas, the precuring demands green body temperature stopped paying out in universal production technology, fog room environment temperature
45 DEG C or more, wherein green body temperature relies primarily on calcareous material self-heating in slurry, and fog room environment temperature relies primarily on base
Body fever is maintained with auxiliary heating means.
However, after substituting traditional quick lime as main calcareous material due to carbide slag, the main ingredient of calcareous material by
Calcium oxide (CaO) becomes calcium hydroxide (Ca (OH)2), due to Ca (OH)2Hydration heat reaction does not occur after adding water, therefore, loses
Behind internal consistent heat generation source, the process of getting angry of carbide slag steam-pressing aero-concrete is difficult to control, and gas forming amount significantly reduces, therefore sends out
Gas stability is poor, and yield rate is lower.
So needing to be able to ascend the quiet method for stopping paying out stability during gas of carbide slag steam-pressing aero-concrete.
Summary of the invention
Aiming at the above defects or improvement requirements of the prior art, the present invention provides one kind is got angry precuring skill based on microwave
The method that art prepares air entrained concrete it is intended that controlling slurry bulk temperature by microwave heating, and then controls slurry hair
Gas process is achieved in the uniform, controllable of slurry temperature without in advance heating water, it is ensured that process of getting angry is stablized；Obtained electricity
Rock ballast aerated concrete finished product rate is high, and performance is stablized.
To achieve the above object, according to one aspect of the present invention, it provides and a kind of is got angry precuring technology based on microwave
The method for preparing air entrained concrete, includes the following steps:
(1) calcium-silicon mixed slurry is prepared:
It is 1.5~2.5 parts of calcareous material, 5.5~6.5 parts of siliceous material and 0.3~0.5 part of steaming by mass fraction
Pressure helper component adds water Wet blend-milling, obtains moisture content 60%~70%, and grain fineness is less than calcium-silicon mixed slurry of 0.1mm；
Calcareous material be carbide slag, in calcium hydroxide any one or both mixture；
(2) calcium-silicon mixed slurry, cementitious material, component of getting angry, foam stabilizing component are weighed in mass ratio: gel material
Expect that mass fraction is 1~2 part, component of getting angry account for dry mash and cementitious material gross mass in calcium-silicon mixed slurry 0.1%~
0.2%, foam stabilizing component accounts for 0.2%~0.7% of dry mash and cementitious material gross mass in calcium-silicon mixed slurry；
First it will add component of getting angry except the raw material stirring predetermined time of group exceptionally of getting angry and stir to obtaining after mixing
It is poured slurry；
(3) casting is got angry-precuring with microwave:
Casting slurry is poured into specified mold, and be put into it is quiet in microwave heating equipment stop, carry out microwave and get angry-precuring
Shield, by microwave power adjust control slurry temperature between 40 DEG C~70 DEG C, maintenance to blank strength reach 0.1MPa~
0.2MPa reaches demoulding and cutting intensity；
(4) demoulding, cutting, steam press maintenance:
Blank strength removes mold after reaching 0.1MPa~0.2MPa, is cut by predetermined size and required precision, and
Steam press maintenance obtains calcareous material aerated concrete products to required intensity.
Further, siliceous material is one of sand, flyash, CHARACTERISTICS OF TAILINGS SAND or several mixtures；Gel rubber material
For portland cement；Steam pressure auxiliary material is one of ardealite, desulfurized gypsum, building gypsum or several mixtures；
Group of getting angry is divided into the mixture of one of aluminium powder cream, hydrogen peroxide or two kinds；Foam stabilizing group is divided into polyvinyl alcohol, detergent alkylate
One of sodium sulfonate and rosin foam stabilizer or several mixtures.
Further, in step (1), quality is than calcareous material: siliceous material=1:2~1:2.5.
The present invention also provides a kind of air entrained concrete prepared according to the method described above, by gel rubber material, component of getting angry, steady
Dry mash in bubble component, water and calcium-silicon mixed slurry is mixed to get according to the following raw material proportion:
Dry mash in calcium-silicon mixed slurry include 1.5~2.5 parts of mass fraction calcareous material, 5.5~6.5 parts
Siliceous material, 0.3~0.5 part of steam pressure helper component；Gel rubber material mass fraction is 1~2 part；It is mixed that component of getting angry accounts for calcium-silicon
Dry mash and the 0.1%~0.2% of cementitious material gross mass in slurry is closed, foam stabilizing component accounts for the dry powder in calcium-silicon mixed slurry
Material and the 0.2%~0.7% of cementitious material gross mass, water consumption are that dry mash in calcium-silicon mixed slurry and cementitious material are total
The 50%~60% of quality；Calcareous material be carbide slag, in calcium hydroxide any one or both mixture.
Further, siliceous material is one of sand, flyash, CHARACTERISTICS OF TAILINGS SAND or several mixtures；Gel rubber material
For portland cement；Steam pressure auxiliary material is one of ardealite, desulfurized gypsum, building gypsum or several mixtures；
Group of getting angry is divided into the mixture of one of aluminium powder cream, hydrogen peroxide or two kinds；Foam stabilizing group is divided into polyvinyl alcohol, detergent alkylate
One of sodium sulfonate and rosin foam stabilizer or several mixtures.
Further, the calcium-silicon mixed slurry be calcareous material and siliceous material according to quality than calcareous material: silicon
The slurry for adding water mill carefully to obtain after material=1:2~1:2.5 mixing, moisture content are 60%~70%, and grain fineness is less than
0.1mm.In general, the above technical scheme conceived by the present invention compared with prior art, can achieve the following beneficial effects:
1, traditional precuring process of getting angry relies primarily on calcareous material, and the hydration reaction fever control slurry of quick lime is whole
Temperature, to be indirectly controlled slurry gas forming rate and densification, therefore slurry stability and production efficiency are by calcareous material
The influence of item matter is very big, and temperature gradient is difficult to；Microwave proposed by the invention get angry precuring technological break-through with
The defect influenced toward slurry gas forming rate and production efficiency by calcareous material, it is higher but not that calcium content can be used in calcareous material
The material of fever, such as calcium hydroxide, carbide slag control slurry gas forming rate by the adjusting to microwave power, pass through raw material group
The control difficulty of slurry gas forming rate and densification is effectively reduced in the thickening of the optimizing regulation slurry divided, improves production efficiency,
Reduce energy consumption.
2, microwave provided by the present invention precuring technique of getting angry has low to material quality requirement, and technology controlling and process is easy,
The features such as usury is useless, waste utilization diversification, low energy consumption, high yield rate, obtained steam-pressing aero-concrete can meet
The requirement of GB11968-2006, stomata is uniform, excellent thermal insulation performance, and the walling work with industry, civil buildings can be widely applied.
3, the present invention prepares carbide slag steam-pressing aero-concrete, without in advance heating water, is controlled and is expected by microwave heating
Starch bulk temperature, and then control slurry and get angry process, slurry temperature uniformly, it is controllable, process of getting angry is stablized, and high yield rate is up to 99%
More than, steam-pressing aero-concrete obtained can meet the requirement of GB11968-2006, and stomata is uniform, excellent thermal insulation performance, can be wide
The walling work of general application and industry, civil buildings.
Detailed description of the invention
Fig. 1 be it is of the invention based on microwave get angry precuring technology prepare air entrained concrete method process flow signal
Figure.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below
Not constituting a conflict with each other can be combined with each other.
[embodiment 1]
A kind of microwave is got angry the method that precuring technology prepares calcium carbide slag aerated concrete, is included the following steps:
(1) mass fraction is 2.0 parts of carbide slags, 6.0 parts of siliceous material and 0.3 part of steaming by calcium-silicon mixed slurry preparation
Pressure auxiliary material, which is put into wet milk, carries out Wet blend-milling, obtains moisture content 60%, and calcium-silicon of the grain fineness less than 0.1mm is mixed
Close slurry；
(2) ingredient, by calcium-silicon mixed slurry: cement=8:1.25 ratio weighs, component of getting angry and foam stabilizing component
Respectively the 0.10% and 0.25% of dry mash weight, by mixed slurry and cement, foam stabilizing component is mixed 90s, adds
Component of getting angry stirs 90s, obtains casting slurry after mixing；
(3) casting stops paying out gas precuring with quiet, casting slurry is poured into engineering plastics mold, and be put into frequency and be
The microwave heating equipment of 2.4GHz is heated to 50 DEG C, and 20min is maintained to get angry, and is warming up to 70 DEG C, and 70min is maintained to carry out precuring
Shield, blank strength reach 0.1MPa or more, reach demoulding and cutting intensity；
(4) demoulding, cutting, steam press maintenance, green body remove mold after reaching appropriate intensity, by product size and required precision
It is cut, and is put into maintenance in still kettle, obtain steam pressurized foam concrete.
It is 618kg/m by steam-pressing aero-concrete over dry average volume density prepared by the present embodiment method3, compression strength
Average value is 3.8MPa, and be up to state standards B06 in " autoclave aerated concrete building block " (GB11968-2006), A3.5 grades of products
Performance indicator requirement.
[embodiment 2]
A kind of microwave is got angry the method that precuring technology prepares calcium carbide slag aerated concrete, is included the following steps:
(1) mass fraction is 2.5 parts of carbide slags, 6.0 parts of siliceous material and 0.3 part of steaming by calcium-silicon mixed slurry preparation
Pressure auxiliary material, which is put into wet milk, carries out Wet blend-milling, obtains moisture content 65%, and calcium-silicon of the grain fineness less than 0.1mm is mixed
Close slurry；
(2) ingredient, by calcium-silicon mixed slurry: cement=8:1.25 ratio weighs, component of getting angry and foam stabilizing component
Respectively the 0.14% and 0.3% of dry mash weight, by mixed slurry and cement, foam stabilizing component is mixed 90s, adds hair
Gas component stirs 90s, obtains casting slurry after mixing；
(3) casting stops paying out gas precuring with quiet, casting slurry is poured into engineering plastics mold, and be put into frequency and be
It is heated to 50 DEG C in the microwave heating equipment of 2.4GHz, 30min is maintained to get angry, is warming up to 65 DEG C, maintains 60min to carry out pre-
Maintenance, blank strength reach 0.1MPa or more, reach demoulding and cutting intensity；
(4) demoulding, cutting, steam press maintenance, green body remove mold after reaching appropriate intensity, by product size and required precision
It is cut, and is put into maintenance in still kettle, obtain steam pressurized foam concrete.
It is 518kg/m by steam-pressing aero-concrete over dry average volume density prepared by the present embodiment method3, compression strength
Average value is 3.0MPa, and be up to state standards B05 in " autoclave aerated concrete building block " (GB11968-2006), A2.5 grades of products
Performance indicator requirement.
[embodiment 3]
A kind of microwave is got angry the method that precuring technology prepares calcium carbide slag aerated concrete, is included the following steps:
(1) mass fraction is 2.0 parts of carbide slags, 6.0 parts of siliceous material and 0.4 part of steaming by calcium-silicon mixed slurry preparation
Pressure auxiliary material, which is put into wet milk, carries out Wet blend-milling, obtains moisture content 65%, and calcium-silicon of the grain fineness less than 0.1mm is mixed
Close slurry；
(2) ingredient, by calcium-silicon mixed slurry: cement=8:1 ratio weighs, component of getting angry and foam stabilizing component point
Not Wei dry mash weight 0.12% and 0.3%, by mixed slurry and cement, 90s is mixed in foam stabilizing component, is added and is got angry
Component stirs 90s, obtains casting slurry after mixing；
(3) casting stops paying out gas precuring with quiet, casting slurry is poured into engineering plastics mold, and be put into frequency and be
It is heated to 45 DEG C in the microwave heating equipment of 2.4GHz, 30min is maintained to get angry, is warming up to 70 DEG C, maintains 60min to carry out pre-
Maintenance, blank strength reach 0.1MPa or more, reach demoulding and cutting intensity；
(4) demoulding, cutting, steam press maintenance, green body remove mold after reaching appropriate intensity, by product size and required precision
It is cut, and is put into maintenance in still kettle, obtain steam pressurized foam concrete.
Steam-pressing aero-concrete over dry average volume density manufactured in the present embodiment is 562kg/m3, compression strength average value can
Up to 3.6MPa, be up to state standards B06 in " autoclave aerated concrete building block " (GB11968-2006), and A3.5 grades of properties of product refer to
Mark requires.
[embodiment 4]
A kind of microwave is got angry the method that precuring technology prepares calcium carbide slag aerated concrete, is included the following steps:
(1) mass fraction is 1.8 parts of carbide slags, 6.0 parts of siliceous material and 0.3 part of steaming by calcium-silicon mixed slurry preparation
Pressure auxiliary material, which is put into wet milk, carries out Wet blend-milling, obtains moisture content 70%, and calcium-silicon of the grain fineness less than 0.1mm is mixed
Close slurry；
(2) ingredient, by calcium-silicon mixed slurry: cement=8:1.5 ratio weighs, component of getting angry and foam stabilizing component
Respectively the 0.13% and 0.25% of dry mash weight, by mixed slurry and cement, foam stabilizing component is mixed 90s, adds
Component of getting angry stirs 90s, obtains casting slurry after mixing；
(3) casting stops paying out gas precuring with quiet, casting slurry is poured into engineering plastics mold, and be put into frequency and be
It is heated to 50 DEG C in the microwave heating equipment of 2.4GHz, 20min is maintained to get angry, is warming up to 70 DEG C, maintains 80min to carry out pre-
Maintenance, blank strength reach 0.1MPa or more, reach demoulding and cutting intensity；
(4) demoulding, cutting, steam press maintenance, green body remove mold after reaching appropriate intensity, by product size and required precision
It is cut, and is put into maintenance in still kettle, obtain steam pressurized foam concrete.
Steam-pressing aero-concrete over dry average volume density manufactured in the present embodiment is 506kg/m3, compression strength average value can
Up to 2.8MPa, be up to state standards B05 in " autoclave aerated concrete building block " (GB11968-2006), and A2.5 grades of properties of product refer to
Mark requires.
Microwave heating equipment in above-mentioned each embodiment is commercial product, and then working frequency may be different for model difference,
Not as to specific limitation of the invention.
In addition, above-mentioned each calcium used in the examples-silicon mixed slurry grain fineness is less than 0.1mm；Water is tap water；
Slurry it is quiet stop paying out gas, the precuring stage using microwave heating equipment carry out heating with temperature gradient control；Green body completes quiet stop
It gets angry and size is cut as required after the precuring stage, its dimensional accuracy is made to be up to state standards " steam-pressing aero-concrete
Building block " (GB 11968-2006) requirement；Green body after the completion of cutting is put into 185 DEG C of vapor (steam) temperature, saturated vapor pressure 1.3MPa's
8h is conserved in still kettle, obtains steam pressurized foam concrete.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (6)
1. a kind of got angry the method that precuring technology prepares air entrained concrete based on microwave, which comprises the steps of:
(1) calcium-silicon mixed slurry is prepared:
It is that 1.5~2.5 parts of calcareous material, 5.5~6.5 parts of siliceous material and 0.3~0.5 part of steam pressure are auxiliary by mass fraction
It helps component to add water Wet blend-milling, obtains moisture content 60%~70%, grain fineness is less than calcium-silicon mixed slurry of 0.1mm；It is calcareous
Material be carbide slag, in calcium hydroxide any one or both mixture；
(2) calcium-silicon mixed slurry, cementitious material, component of getting angry, foam stabilizing component are weighed in mass ratio: gel rubber material matter
Measuring number is 1~2 part, and component of getting angry accounts for dry mash and the 0.1%~0.2% of cementitious material gross mass in calcium-silicon mixed slurry,
Foam stabilizing component accounts for 0.2%~0.7% of dry mash and cementitious material gross mass in calcium-silicon mixed slurry；
First it will add component of getting angry except the raw material stirring predetermined time of group exceptionally of getting angry and stir to being poured after mixing
Slurry；
(3) casting is got angry-precuring with microwave:
Casting slurry is poured into specified mold, and be put into it is quiet in microwave heating equipment stop, carry out microwave and get angry-precuring,
Control slurry temperature is adjusted between 40 DEG C~70 DEG C by microwave power, maintenance to blank strength reaches 0.1MPa~0.2MPa,
Reach demoulding and cutting intensity；
(4) demoulding, cutting, steam press maintenance:
Blank strength removes mold after reaching 0.1MPa~0.2MPa, is cut by predetermined size and required precision, and steam pressure
Maintenance obtains calcareous material aerated concrete products to required intensity.
2. it is according to claim 1 it is a kind of got angry the method that precuring technology prepares air entrained concrete based on microwave, it is special
Sign is that siliceous material is one of sand, flyash, CHARACTERISTICS OF TAILINGS SAND or several mixtures；Gel rubber material is silicate cement
Mud；Steam pressure auxiliary material is one of ardealite, desulfurized gypsum, building gypsum or several mixtures；Group of getting angry is divided into
One of aluminium powder cream, hydrogen peroxide or two kinds of mixture；Foam stabilizing group is divided into polyvinyl alcohol, neopelex and pine
One of fragrant class foam stabilizer or several mixtures.
3. it is according to claim 1 or 2 it is a kind of got angry the method that precuring technology prepares air entrained concrete based on microwave,
It is characterized in that, in step (1), quality is than calcareous material: siliceous material=1:2~1:2.5.
4. a kind of air entrained concrete, which is characterized in that mixed by gel rubber material, component of getting angry, foam stabilizing component, water and calcium-silicon
Dry mash in slurry is mixed to get according to the following raw material proportion:
Dry mash in calcium-silicon mixed slurry include 1.5~2.5 parts of mass fraction calcareous material, 5.5~6.5 parts siliceous
Material, 0.3~0.5 part of steam pressure helper component；Gel rubber material mass fraction is 1~2 part；Component of getting angry accounts for calcium-silicon mixture
The 0.1%~0.2% of dry mash and cementitious material gross mass in slurry, foam stabilizing component account for dry mash in calcium-silicon mixed slurry with
The 0.2%~0.7% of cementitious material gross mass, water consumption are dry mash and cementitious material gross mass in calcium-silicon mixed slurry
50%~60%；Calcareous material be carbide slag, in calcium hydroxide any one or both mixture.
5. a kind of air entrained concrete according to claim 4, which is characterized in that siliceous material is sand, flyash, CHARACTERISTICS OF TAILINGS SAND
One of or several mixtures；Gel rubber material is portland cement；Steam pressure auxiliary material be ardealite, desulfurized gypsum,
One of building gypsum or several mixtures；Group of getting angry is divided into the mixed of one of aluminium powder cream, hydrogen peroxide or two kinds
Close object；Foam stabilizing group is divided into one of polyvinyl alcohol, neopelex and rosin foam stabilizer or several mixing
Object.
6. a kind of air entrained concrete according to claim 4 or 5, which is characterized in that the calcium-silicon mixed slurry is calcium
Material and siliceous material are according to quality than calcareous material: after siliceous material=1:2~1:2.5 is mixed plus material that water mill carefully obtains
Slurry, moisture content are 60%~70%, and grain fineness is less than 0.1mm.
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| CN112028661A (en) * | 2020-09-11 | 2020-12-04 | 山东铭城环保新材料科技有限公司 | Preparation method of recyclable cadmium adsorption porcelain powder foam concrete block |
| CN112194447A (en) * | 2020-10-09 | 2021-01-08 | 四川宏量基筑建材有限公司 | Preparation method of green autoclaved aerated concrete and aerated concrete |
| CN114605134A (en) * | 2022-03-25 | 2022-06-10 | 华润水泥技术研发有限公司 | High-strength low-density autoclaved aerated concrete and preparation method thereof |
| CN114851370A (en) * | 2022-06-08 | 2022-08-05 | 山东汉博昱洲新材料有限公司 | Pulse type carbon mineralization maintenance process |
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Application publication date: 20190823 |