CN108101436A - A kind of thermal insulation concrete of slag containing manganese and preparation method thereof - Google Patents
A kind of thermal insulation concrete of slag containing manganese and preparation method thereof Download PDFInfo
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- CN108101436A CN108101436A CN201810115994.XA CN201810115994A CN108101436A CN 108101436 A CN108101436 A CN 108101436A CN 201810115994 A CN201810115994 A CN 201810115994A CN 108101436 A CN108101436 A CN 108101436A
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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
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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
- 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 present invention relates to a kind of thermal insulation concretes of slag containing manganese and preparation method thereof, are related to Material Field.The thermal insulation concrete of slag containing manganese, raw material include：The cement of 160 230 parts by weight; the rubble of 300 350 parts by weight; the sand of 80 170 parts by weight; the manganese slag of 50 70 parts by weight; the glass bead of 20 25 parts by weight, the flyash of 15 25 parts by weight, the pulverized limestone of the parts by weight of 25 30 parts by weight; the water of the polycrystalline mullite fibre of 0.5 1.3 parts by weight, the high efficiency water reducing agent of 59 parts by weight and 100 120 parts by weight.Preparation method is under stirring, and raw material is mixed.Its is easy to operate controllable, effectively reduce cost of manufacture, while slag containing manganese obtained thermal insulation concrete is had excellent performance, and thermal conductivity factor is small, and porosity is good, and compressive property is strong while heat-insulating property is good.
Description
Technical field
The present invention relates to Material Field, and more particularly to a kind of thermal insulation concrete of slag containing manganese and preparation method thereof.
Background technology
In recent years, electrolytic manganese industrial expansion in China's is rapid, the improvement of electrolytic manganese residues and comprehensive reutilization problem day
Benefit is prominent.At present due to economy, technology etc., it is just that it is straight that electrolytic manganese residues do not do any processing in many electrolytic manganese enterprises
It connects and is stacked at cinder field, the manganese slag accumulated for a long time can cause ambient enviroment seriously to pollute.Manganese slag has higher wood interior porosity,
Also there is preferable chemical stability simultaneously, how to make full use of manganese slag, be a research direction of existing technology.
The content of the invention
It is an object of the invention to provide a kind of thermal insulation concretes of slag containing manganese, and thermal conductivity factor is small, and porosity is good, heat insulating ability
Compressive property is strong while can be good.
Another object of the present invention is to provide a kind of preparation method of the thermal insulation concrete of slag containing manganese, it is easy to operate can
Control, effectively reduce cost of manufacture, while slag containing manganese obtained thermal insulation concrete is had excellent performance.
The present invention is solved its technical problem and is realized using following technical scheme.
The present invention proposes a kind of thermal insulation concrete of slag containing manganese, and raw material includes：
The cement of 160-230 parts by weight, the rubble of 300-350 parts by weight, the sand of 80-170 parts by weight, 50-70 parts by weight
Manganese slag, the glass bead of 20-25 parts by weight, the flyash of 15-25 parts by weight, the pulverized limestone of the parts by weight of 25-30 parts by weight,
The polycrystalline mullite fibre of 0.5-1.3 parts by weight, the high efficiency water reducing agent of 5-9 parts by weight and the water of 100-120 parts by weight.
The present invention proposes the preparation method of the above-mentioned thermal insulation concrete of slag containing manganese, including：
Under stirring, raw material is mixed.
The advantageous effect of the thermal insulation concrete of slag containing manganese of the embodiment of the present invention and preparation method thereof is：
Manganese slag loose and porous inner surface, more general river sand and quartz wait its light weight and have preferable heat-insulating property, and
Manganese solid impurity particle matter is hard, therefore can be as the skeleton of concrete.It is compared with glass bead simultaneously, and texture is too hard, and the two is mutual
Cooperation effectively improves the heat-insulating property and intensity of the thermal insulation concrete of slag containing manganese.Manganese slag has stronger water imbibition simultaneously, in order to
So that during mixing, with preferable mobility, the high efficiency water reducing agent of 5-9 parts by weight and 100-120 weights are added
Measure the water of part.Polycrystalline mullite fibre effectively enhancing the thermal insulation concrete of slag containing manganese heat-insulating property, meanwhile, specific surface area compared with
Greatly, effectively enhancing and the contact area of cement etc., adds its cementability in the matrix such as cement so that the heat preservation of slag containing manganese is mixed
Solidifying soil is more fine and close, enhances its intensity.Flyash is effectively excited by the addition of pulverized limestone simultaneously and adjusts the activity of manganese slag,
Meanwhile manganese slag, flyash is after the chemical activation of the inorganic base calcium oxide of pulverized limestone, as the hydrated cementitious in concrete generates
Ca(OH)2, activated manganese slag can be with the Ca (OH) of generation2Secondary response directly occurs, generates a variety of novel substances, makes containing manganese
Slag thermal insulation concrete intensity obtains larger raising.Since the generation of secondary response can accelerate the aquation of cement again so that in morning
Hydrated cementitious in phase slag containing manganese thermal insulation concrete generates substantial amounts of Ca (OH)2, and then improve the thermal insulation concrete of slag containing manganese
Compression strength.
The preparation method is easy to operate controllable, effectively reduces cost of manufacture, while slag containing manganese obtained thermal insulation concrete
It has excellent performance.
Specific embodiment
It, below will be in the embodiment of the present invention to make the purpose, technical scheme and advantage of the embodiment of the present invention clearer
Technical solution be clearly and completely described.The person that is not specified actual conditions in embodiment, builds according to normal condition or manufacturer
The condition of view carries out.Reagents or instruments used without specified manufacturer is the conventional production that can be obtained by commercially available purchase
Product.
Thermal insulation concrete of slag containing manganese of the embodiment of the present invention and preparation method thereof is specifically described below.
A kind of thermal insulation concrete of slag containing manganese, raw material include：
The cement of 160-230 parts by weight, the rubble of 300-350 parts by weight, the sand of 80-170 parts by weight, 50-70 parts by weight
Manganese slag, the glass bead of 20-25 parts by weight, the flyash of 15-25 parts by weight, the pulverized limestone of the parts by weight of 25-30 parts by weight,
The polycrystalline mullite fibre of 0.5-1.3 parts by weight, the high efficiency water reducing agent of 5-9 parts by weight and the water of 100-120 parts by weight.
Wherein, glass bead water absorption rate is small, physicochemical property is stablized, and has light, adiabatic, fire prevention, high-low temperature resistant, anti-ageing
Change, the excellent specific properties such as water absorption rate is small, as the aglite of the thermal insulation concrete of slag containing manganese, overcome expanded perlite water imbibition
The easy dusting of great ﹑, cubical contraction is big in slurry stirring, easily causes phenomena such as product later strength is low and hollowing cracks, improves
The perfect comprehensive performance and workability of the thermal insulation concrete of slag containing manganese.It is preferred that glass bead is obturator-type.
Manganese slag loose and porous inner surface, more general river sand and quartz wait its light weight and have preferable heat-insulating property, and
Manganese solid impurity particle matter is hard, therefore can be as the skeleton of concrete.It is compared with glass bead simultaneously, and texture is too hard, and the two is mutual
Cooperation effectively improves the heat-insulating property and intensity of the thermal insulation concrete of slag containing manganese.
Manganese slag has stronger water imbibition simultaneously, in order to enable during mixing, with preferable mobility, adds
Add the high efficiency water reducing agent of 5-9 parts by weight and the water of 100-120 parts by weight.Polycrystalline mullite fibre is the outer latest model of Now Domestic
Ultralight high-temperature refractory fiber, for classification temperature up to 1600 DEG C, molten point is a kind of unique with mullite crystalline phase shape up to 1840 DEG C
Docrystalline refractory fibre existing for formula, fibre diameter 3-5um, fiber appearance is white, smooth, soft, high resilience, You Ru
Absorbent cotton.Its low heat conductivity, thermal shock resistance, good sound absorption qualities, heat reflection performance be high, uniform fibre diameter, excellent
Chemical stability.
The heat-insulating property of the polycrystalline mullite fibre effectively enhancing thermal insulation concrete of slag containing manganese, meanwhile, specific surface area is larger,
Effectively enhancing and the contact area of cement etc., adds its cementability in the matrix such as cement so that slag containing manganese keeps the temperature coagulation
Soil is more fine and close, enhances its intensity.
The activity of flyash is essentially from active SiO2(vitreum SiO2) and activity Al2O3(vitreum Al2O3) certain
Hydration under alkaline condition.The activity excitation of manganese slag is also required in alkaline environment, therefore adds the weight of 25-30 parts by weight
The pulverized limestone of part is measured, effectively adjusts the activity of manganese slag.Meanwhile manganese slag, flyash are in the chemistry of the inorganic base calcium oxide of pulverized limestone
After activation, as the hydrated cementitious in concrete generates Ca (OH)2, activated manganese slag can be with the Ca (OH) of generation2Directly send out
Raw secondary response, generates a variety of novel substances, concrete strength is made to obtain larger raising.Since the generation of secondary response can add again
The aquation of fast cement so that the hydrated cementitious in early concrete generates substantial amounts of Ca (OH)2, and then make the resistance to compression of concrete
Intensity obtains larger raising in early stage.
Optionally, pulverized limestone, flyash and manganese slag co-ground 10-20min, by mechanical lapping, further to manganese
Slag carries out the function of mechanical activation, while so that pulverized limestone, flyash and the mixing of manganese slag are more abundant.
Preferably, in preferred embodiments of the present invention, polycrystalline mullite fibre includes the first polycrystalline that length is 18-25mm
Mullite fiber and length are the second polycrystalline mullite fibre of 9-12mm, it is highly preferred that the first polycrystalline mullite fibre with
The weight ratio of second polycrystalline mullite fibre is 1-2：0.5-1.
It wherein, can when the first polycrystalline mullite fibre of 18-25mm cracks effectively the thermal insulation concrete of slag containing manganese
Prevent the extension of crackle so that crackle must not bypass the first polycrystalline mullite fibre on a large scale, generally so that slag containing manganese is protected
The anti-folding and compression strength of warm concrete, but since the length of the first polycrystalline mullite fibre is longer, in matrix such as cement
In be not easy to disperse, easily reunite, therefore add length be 9-12mm the second polycrystalline mullite fibre, dispersiveness preferably,
In the range of aforementioned proportion, the two complementation, while the stress that concrete shrinkage generates effectively is offset, effectively improve resistance to compression, anti-folding by force
Degree.
Preferably, in preferred embodiments of the present invention, the grain size of rubble is 5-32mm.
It is highly preferred that it is 5mm≤grain size that rubble, which includes grain size,<The first rubble of 10mm, the first rubble account for the weight of rubble
Percentage is 5-20%.Rubble includes 10mm≤grain size<The second rubble of 20mm, the weight percent that the second rubble accounts for rubble are
Accounting 55-75%.Rubble includes threeth rubble of the grain size for >=20mm, and the weight percent that the 3rd rubble accounts for rubble is accounting
10-35%.Pass through the grading of rubble so that more preferably, while heat-insulating property is good for the intensity of the thermal insulation concrete of slag containing manganese.
In order to further enhance the cementability between each component so that last structure obtained is more fine and close, optionally, former
Material further includes the waterglass of 0.5-1.3 parts by weight.
The present invention also provides a kind of preparation method of the above-mentioned thermal insulation concrete of slag containing manganese, including：
Under stirring, raw material is mixed.
Preferably, in order to be sufficiently mixed material, by sand, cement, manganese slag, glass bead, flyash, pulverized limestone, polycrystalline
Mullite fiber mixes, and obtains mixed material.High efficiency water reducing agent is mixed into obtain mixed solution with water；Mixed material is molten with mixing
After liquid mixing, then mix with rubble.Wherein, optionally, in the manufacturing process of mixed material, can first by pulverized limestone, flyash with
It and after manganese slag co-ground 10-20min, then mixes with cement, sand, glass bead, polycrystalline mullite fibre, passes through mechanical grinding
Mill further carries out manganese slag the function of mechanical activation, while so that pulverized limestone, flyash and the mixing of manganese slag are more abundant.
When further including the waterglass of 0.5-1.3 parts by weight in raw material, during mixing, by waterglass, high efficiency water reducing agent and water
Mixing, i.e., mixed solution further includes the waterglass of 0.5-1.3 parts by weight.
The feature and performance of the present invention are described in further detail with reference to embodiments.
Embodiment 1
A kind of thermal insulation concrete of slag containing manganese, is made by following methods：
Prepare raw material：Raw material includes：
The cement of 200 parts by weight, the rubble of 350 parts by weight, the sand of 130 parts by weight, the manganese slag of 60 parts by weight, 25 parts by weight
Glass bead, the flyash of 20 parts by weight, the pulverized limestone of the parts by weight of 27 parts by weight, the polycrystalline mullites of 1.3 parts by weight is fine
The water of dimension, the high efficiency water reducing agent of 8 parts by weight and 105 parts by weight.
Wherein, polycrystalline mullite fibre include length be 18-25mm the first polycrystalline mullite fibre and length be 9-
The weight ratio of the second polycrystalline mullite fibre of 12mm, the first polycrystalline mullite fibre and the second polycrystalline mullite fibre is 3：1.
It is 5mm≤grain size that rubble, which includes grain size,<The first rubble of 10mm, rubble include 10mm≤grain size<The second of 20mm
Rubble, rubble include threeth rubble of the 20mm≤grain size for≤32mm, and the weight percent that the first rubble accounts for rubble is 20%；The
The weight percent that two rubbles account for rubble is accounting 75%；The weight percent that 3rd rubble accounts for rubble is accounting 10%.
Under stirring, by sand, cement, manganese slag, glass bead, flyash, pulverized limestone and polycrystalline mullite fibre
Mixing, obtains mixed material；High efficiency water reducing agent is mixed into obtain mixed solution with water；After mixed material is mixed with mixed solution,
Continue to stir 3min after mixing with rubble again.
Embodiment 2
A kind of thermal insulation concrete of slag containing manganese, is made by following methods：
Prepare raw material：Raw material includes：
The cement of 220 parts by weight, the rubble of 330 parts by weight, the sand of 100 parts by weight, the manganese slag of 60 parts by weight, 23 parts by weight
Glass bead, the flyash of 20 parts by weight, the pulverized limestone of the parts by weight of 28 parts by weight, the polycrystalline mullite fibre of 1 parts by weight,
The water of the high efficiency water reducing agent of 7 parts by weight and 120 parts by weight.
Wherein, polycrystalline mullite fibre include length be 18-25mm the first polycrystalline mullite fibre and length be 9-
The weight ratio of the second polycrystalline mullite fibre of 12mm, the first polycrystalline mullite fibre and the second polycrystalline mullite fibre is 1.5：
0.5。
It is 5mm≤grain size that rubble, which includes grain size,<The first rubble of 10mm, rubble include 10mm≤grain size<The second of 20mm
Rubble, rubble include threeth rubble of the 20mm≤grain size for≤32mm, and the weight percent that the first rubble accounts for rubble is 15%；The
The weight percent that two rubbles account for rubble is accounting 60%；The weight percent that 3rd rubble accounts for rubble is accounting 25%.
Under stirring, by sand, cement, manganese slag, glass bead, flyash, pulverized limestone and polycrystalline mullite fibre
Mixing, obtains mixed material；High efficiency water reducing agent is mixed into obtain mixed solution with water；After mixed material is mixed with mixed solution,
Continue to stir 2-3min after mixing with rubble again.
Embodiment 3
A kind of thermal insulation concrete of slag containing manganese, is made by following methods：
Prepare raw material：Raw material includes：
The cement of 230 parts by weight, the rubble of 350 parts by weight, the sand of 130 parts by weight, the manganese slag of 55 parts by weight, 25 parts by weight
Glass bead, the flyash of 25 parts by weight, the pulverized limestone of the parts by weight of 30 parts by weight, the polycrystalline mullites of 1.3 parts by weight is fine
The water of dimension, the high efficiency water reducing agent of 8 parts by weight and 105 parts by weight.
Wherein, polycrystalline mullite fibre include length be 18-25mm the first polycrystalline mullite fibre and length be 9-
The weight ratio of the second polycrystalline mullite fibre of 12mm, the first polycrystalline mullite fibre and the second polycrystalline mullite fibre is 2：1.
It is 5mm≤grain size that rubble, which includes grain size,<The first rubble of 10mm, rubble include 10mm≤grain size<The second of 20mm
Rubble, rubble include threeth rubble of the 20mm≤grain size for≤32mm, and the weight percent that the first rubble accounts for rubble is 15%；The
The weight percent that two rubbles account for rubble is accounting 65%；The weight percent that 3rd rubble accounts for rubble is accounting 25%.
First by after the mixed powder co-ground 15min of pulverized limestone, flyash and manganese slag, under stirring, will mix
Powder, sand, cement, glass bead and polycrystalline mullite fibre mixing are closed, obtains mixed material；By high efficiency water reducing agent and water
Mix to obtain mixed solution；Continue to stir 3min after mixed material is mixed with mixed solution, then after mixing with rubble.
Embodiment 4
A kind of thermal insulation concrete of slag containing manganese, is made by following methods：
Prepare raw material：Raw material includes：
The cement of 220 parts by weight, the rubble of 330 parts by weight, the sand of 130 parts by weight, the manganese slag of 60 parts by weight, 25 parts by weight
Glass bead, the flyash of 20 parts by weight, the pulverized limestone of the parts by weight of 28 parts by weight, the polycrystalline mullites of 1.3 parts by weight is fine
The water of dimension, the high efficiency water reducing agent of 7 parts by weight, the waterglass of 1.2 parts by weight and 105 parts by weight.
Wherein, polycrystalline mullite fibre include length be 18-25mm the first polycrystalline mullite fibre and length be 9-
The weight ratio of the second polycrystalline mullite fibre of 12mm, the first polycrystalline mullite fibre and the second polycrystalline mullite fibre is 1.5：
1。
It is 5mm≤grain size that rubble, which includes grain size,<The first rubble of 10mm, rubble include 10mm≤grain size<The second of 20mm
Rubble, rubble include threeth rubble of the 20mm≤grain size for≤32mm, and the weight percent that the first rubble accounts for rubble is 20%；The
The weight percent that two rubbles account for rubble is accounting 55%；The weight percent that 3rd rubble accounts for rubble is accounting 25%.
Under stirring, by sand, cement, manganese slag, glass bead, flyash, pulverized limestone and polycrystalline mullite fibre
Mixing, obtains mixed material；High efficiency water reducing agent, waterglass are mixed into obtain mixed solution with water；By mixed material and mixed solution
Continue to stir 3min after mixing, then after mixing with rubble.
Embodiment 5
A kind of thermal insulation concrete of slag containing manganese, is made by following methods：
Prepare raw material：Raw material includes：
The cement of 200 parts by weight, the rubble of 300 parts by weight, the sand of 110 parts by weight, the manganese slag of 60 parts by weight, 24 parts by weight
Glass bead, the flyash of 20 parts by weight, the pulverized limestone of the parts by weight of 27 parts by weight, the polycrystalline mullite fibre of 1 parts by weight,
The water of the high efficiency water reducing agent of 7 parts by weight, the waterglass of 1 parts by weight and 105 parts by weight.
Wherein, polycrystalline mullite fibre include length be 18-25mm the first polycrystalline mullite fibre and length be 9-
The weight ratio of the second polycrystalline mullite fibre of 12mm, the first polycrystalline mullite fibre and the second polycrystalline mullite fibre is 1：1.
It is 5mm≤grain size that rubble, which includes grain size,<The first rubble of 10mm, rubble include 10mm≤grain size<The second of 20mm
Rubble, rubble include threeth rubble of the 20mm≤grain size for≤32mm, and the weight percent that the first rubble accounts for rubble is 15%；The
The weight percent that two rubbles account for rubble is accounting 70%；The weight percent that 3rd rubble accounts for rubble is accounting 15%.
Under stirring, by sand, cement, manganese slag, glass bead, flyash, pulverized limestone and polycrystalline mullite fibre
Mixing, obtains mixed material；High efficiency water reducing agent, waterglass are mixed into obtain mixed solution with water；By mixed material and mixed solution
Continue to stir 3min after mixing, then after mixing with rubble.
Test example
Repeat embodiment 1-5 and the thermal insulation concrete of slag containing manganese be made, concrete is entered into mold forming respectively, preloading, for 24 hours after
Form removal, maintenance was to 28 days in 20 DEG C, the environment that humidity is 60% or so.
The cube resistance to compression size of the thermal insulation concrete of slag containing manganese is made as 70mm*70mm*70mm in wherein each embodiment, point
Intensity that Ce Shi be 3d and 28 day, using YAM-300B full-automatic pressure testing machines, the effective company of instrument instrument machinery is built in Wuxi,
Experimentation displacement loads 1mm/min, tests the intensity of 3d and 28 day respectively, and instrument is KZ-5000 type bending test instruments,
The effective company of instrument instrument machinery is built in Wuxi.Specific test method referring to JGJ70-90 building mortar basic performances test method.
Measured Results of Thermal Conductivity is by steady state method measuring principle, and time size is radius 5cm, thickness 1.5cm, using Hunan instrument and meter
The DRXL-1 heat conduction coefficient testers of effective company's production.The results are shown in Table 1.
1 result of the test of table
It can be obtained by table 1, the thermal insulation concrete of slag containing manganese thermal conductivity factor provided by the invention, pressure-proof and snap-resistent intensity is high.
In conclusion the preparation method of the thermal insulation concrete of slag containing manganese of the embodiment of the present invention, easy to operate controllable, effectively
Cost of manufacture is reduced, while slag containing manganese obtained thermal insulation concrete is had excellent performance, thermal conductivity factor is small, porosity is good, heat preservation
Compressive property is strong while excellent performance.
Embodiments described above is part of the embodiment of the present invention, instead of all the embodiments.The reality of the present invention
The detailed description for applying example is not intended to limit the scope of claimed invention, but is merely representative of the selected implementation of the present invention
Example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without creative efforts
Every other embodiment, belongs to the scope of protection of the invention.
Claims (10)
1. a kind of thermal insulation concrete of slag containing manganese, which is characterized in that its raw material includes：
The cement of 160-230 parts by weight, the rubble of 300-350 parts by weight, the sand of 80-170 parts by weight, the manganese of 50-70 parts by weight
Slag, the glass bead of 20-25 parts by weight, the flyash of 15-25 parts by weight, the pulverized limestone of the parts by weight of 25-30 parts by weight, 0.5-
The polycrystalline mullite fibre of 1.3 parts by weight, the high efficiency water reducing agent of 5-9 parts by weight and the water of 100-120 parts by weight.
2. the thermal insulation concrete of slag containing manganese according to claim 1, which is characterized in that the polycrystalline mullite fibre includes length
The first polycrystalline mullite fibre and length spent for 18-25mm are the second polycrystalline mullite fibre of 9-12mm.
3. the thermal insulation concrete of slag containing manganese according to claim 2, which is characterized in that first polycrystalline mullite fibre with
The weight ratio of second polycrystalline mullite fibre is 1-2：0.5-1.
4. the thermal insulation concrete of slag containing manganese according to claim 1, which is characterized in that the grain size of the rubble is 5-32mm.
5. the thermal insulation concrete of slag containing manganese according to claim 3, which is characterized in that the rubble include grain size for 5mm≤
Grain size<The first rubble of 10mm, the weight percent that first rubble accounts for the rubble are 5-20%；
The rubble includes 10mm≤grain size<The second rubble of 20mm, second rubble account for the weight percent of the rubble
For accounting 55-75%；
The rubble includes threeth rubble of the grain size for >=20mm, and the 3rd rubble accounts for the weight percent of the rubble to account for
Compare 10-35%.
6. the thermal insulation concrete of slag containing manganese according to claim 1, which is characterized in that the raw material further includes 0.5-1.3 weights
Measure the waterglass of part.
7. the preparation method of the thermal insulation concrete of slag containing manganese as described in claim 1, which is characterized in that including：
Under stirring, the raw material is mixed.
8. preparation method according to claim 7, which is characterized in that mixing includes：
By the sand, the cement, the manganese slag, the glass bead, the flyash, the pulverized limestone and the polycrystalline
Mullite fiber mixes, and obtains mixed material；
The high efficiency water reducing agent is mixed into obtain mixed solution with the water；
After the mixed material is mixed with the mixed solution, then mix with the rubble.
9. preparation method according to claim 7, which is characterized in that after being mixed with the rubble, further include and continue to stir
2-3min。
10. preparation method according to claim 8, which is characterized in that the mixed solution further includes 0.5-1.3 parts by weight
Waterglass.
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