CN105272137B - A kind of alkali-activated carbonatite phosphorous slag micropowder light foam concrete thermal insulation board and preparation method thereof - Google Patents
A kind of alkali-activated carbonatite phosphorous slag micropowder light foam concrete thermal insulation board and preparation method thereof Download PDFInfo
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- CN105272137B CN105272137B CN201510648816.XA CN201510648816A CN105272137B CN 105272137 B CN105272137 B CN 105272137B CN 201510648816 A CN201510648816 A CN 201510648816A CN 105272137 B CN105272137 B CN 105272137B
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Abstract
The invention discloses a kind of alkali-activated carbonatite phosphorous slag micropowder light foam concrete thermal insulation board, mass percent shared by each component is：Phosphorous slag micropowder 35~39%, alkali-activator 6~10%, adjustable solidification agent 7~12%, modifying agent 9~15%, fiber 0.4~0.8%, foaming agent 9~12%, water 22~26%.The present invention is excited using phosphorous slag micropowder as major gelled material, by highly basic and mixes the solidifying component of appropriate tune and modified component regulates and controls the setting time of foam concrete and shrinkage.Foam concrete heat-preserving plate Absolute Dry Density prepared by the present invention can be controlled in 150~250kg/m3Between, 28d compression strength is 0.30~0.63MPa, and thermal conductivity factor is 0.042~0.051W/mK, and water absorption rate is 5~8%, is a kind of ideal exterior insulation cladding.
Description
Technical field
The invention belongs to inorganic building thermal insulation material fields, and in particular to a kind of alkali-activated carbonatite phosphorous slag micropowder light foam coagulation
Native thermal insulation board and preparation method thereof.
Background technology
Building energy conservation is the emphasis of world today's energy conservation, and since this century, China has put into a large amount of manpower, object
Power is dedicated to the research and development of novel energy-conserving building materials.Different from common building materials, novel environment-friendly energy saving building material is not
It requires nothing more than and has the characteristics of light, high-strength, but also must have many advantages, such as heat preservation, heat-insulated, sound insulation, fire prevention, moisture-proof, antidetonation.
In addition, novel energy-conserving building materials also require raw material using low-carbon emission material or industrial residue, not use or few using not as possible
Renewable resource reduces production cost while reducing environmental pollution.
Foam concrete is using more universal heat insulating material in current building energy saving field, with other thermal insulating materials
Material is compared, and the fire line of foam concrete is good, anti-flammability is strong, deformation coefficient is small, ageing resistance is strong, performance is stable, material exists
Safe, production cost during use is low.The preparation of foam concrete at present is mainly using normal silicate water
Mud, the setting time of Portland cement is longer, although part adjustable solidification agent product can foreshorten to its setting time
Within 10min, but since its early strength develops slowly, the later stage will face intensity it is low even without intensity the problem of, therefore,
Portland cement is often suitable only for preparing dry density 300kg/m3Above foam concrete.And exist for dry density
300kg/m3Hereinafter, especially dry density is in 100~200kg/m3Light foam concrete, generally use early-strong-fast-hard type
Special cement, but a large amount of research and application show that foam concrete prepared by special cement can produce after a period of time has passed
The phenomenon that fecula, strength retraction.
Invention content
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of alkali-activated carbonatite phosphorous slag micropowder light foam coagulations
Native thermal insulation board and preparation method thereof, the foam concrete heat-preserving plate have early-strong-fast-hard, high-strength light and thermal and insulating performance
The advantages of good, and preparation method is simple, energy conservation and environmental protection, is suitble to promote and apply.
To achieve the above object, the technical solution adopted in the present invention is：
A kind of alkali-activated carbonatite phosphorous slag micropowder light foam concrete thermal insulation board, mass percent shared by each raw material are：Phosphorus slag is micro-
Powder 35~39%, alkali-activator 6~10%, adjustable solidification agent 7~12%, modifying agent 9~15%, fiber 0.4~0.8%, foaming
Agent 9~12%, water 22~26%.
By said program, the industrial residue that the phosphorous slag micropowder generates when being and producing yellow phosphorus using electric furnace process obtains after grinding
The powder body material arrived, specific surface area are 450~550m2/kg。
By said program, the alkali-activator is by waterglass and sodium sulphate with (3~5):1 mass ratio mixes,
Wherein the modulus of waterglass is 0.8~1.2.
By said program, the adjustable solidification agent is by ground blast furnace slag and fly ash micro-sphere with (2.5~3):1 mass ratio mixes
It closes, wherein the specific surface area of ground blast furnace slag is 400~450m2/ kg, the specific surface area of fly ash micro-sphere for 850~
1000m2/kg。
By said program, the modifying agent is by magnesia and white lime with (2~4):1 mass ratio mixes, wherein
Magnesia is light burnt powder, and calcination temperature is between 600~850 DEG C.
By said program, the fiber is polypropylene fibre；The foaming agent is compound foaming agent.
It is water-soluble to each surface even application organic waterproof agent of the alkali-activated carbonatite phosphorous slag micropowder light foam concrete thermal insulation board
Liquid, the organic waterproof agent account for the 0.3~0.5% of raw material gross mass.
A kind of preparation method of above-mentioned alkali-activated carbonatite phosphorous slag micropowder light foam concrete thermal insulation board, includes the following steps：
1) raw material weighs, and mass percent shared by each raw material is：Phosphorous slag micropowder 35~39%, alkali-activator 6~10%,
Adjustable solidification agent 7~12%, modifying agent 9~15%, fiber 0.4~0.8%, foaming agent 9~12%, water 22~26%；
2) phosphorous slag micropowder weighed, alkali-activator, adjustable solidification agent, modifying agent, fiber and water are mixed with agitated kettle
Until forming distributed slurry, stir speed (S.S.) is 300~400r/min；
3) using compressed air method foam is made, and directly will bubble in foaming process in foaming agent by the foaming agent weighed
Foam injection step 2) gained distributed slurry in stir evenly, stir speed (S.S.) be 50~100r/min, until foaming finish, and will mix
Foam concrete injection pattern after closing uniformly, stands demould afterwards for 24 hours under field conditions (factors), obtain foaming insulation board；
4) waterproofing agent of organosilicon is weighed according to the ratio of raw material gross mass 0.3~0.5% step 1) described, be diluted with water to
30~50 times of volumes, using sealing spray gun even application in each surface of foaming insulation board obtained by step 3)；Naturally dry does not get wet
Natural curing obtains the alkali-activated carbonatite phosphorous slag micropowder light foam concrete thermal insulation board.
By said program, the waterproofing agent is waterproofing agent of organosilicon.
It is can be controlled according to alkali-activated carbonatite phosphorous slag micropowder light foam concrete thermal insulation board Absolute Dry Density prepared by said program
150~250kg/m3Between, 28d compression strength is 0.3~0.63MPa, and thermal conductivity factor is 0.042~0.051W/mK, is absorbed water
Rate is 5~8%, is a kind of ideal exterior insulation cladding.
In the present invention, alkali-activator uses the waterglass of certain modulus, and suitable alkali environment can be formed inside slurry,
And Al-O, Si-O key in phosphorus slag is made quickly to be broken, form SiO3 2-With AlO3 3-It is free in anion radical, with slurry
Ca2+There is the hydrated product of gelling property further combined with generation C-S-H, C-A-H etc., ensure that it is new mix light foam have compared with
Good early strength, the compound suitable sodium sulphate of incorporation, later stage easily appearance is strong when can effectively solve individually to use waterglass excitation
The problem of spending retraction.Ground blast furnace slag and fly ash micro-sphere compound agent of regulating coagulating are mixed, can effectively solve the problems, such as slurry rapid hardening,
Make its setting time controllable, convenient for casting.The plaster of paris and magnesia composite modifier are mixed, calcium alum can be generated in slurry
Stone and magnesium hydroxide play the role of microdilatancy, micro-aggregate and support frame, generate the effect that compensation is shunk, can effectively solve alkali
Excitation phosphorus slag slurry leads to the cracking of thermal insulation board due to contraction is excessive.Using compound foaming agent, send out under compressed air
Foam is uniformly fine and closely woven, and stability of the foam under strong alkali environment is high, and internal porosity is in autonomous closure shape after hardening, is effectively reduced
Connection porosity inside thermal insulation board improves the thermal property of thermal insulation board.
The present invention is in gained thermal insulation board one layer of waterproofing agent of organosilicon of each surface spraying, R radical siloxanes therein and air
CO2And H2O molecules react, and one layer of fine and close gas permeability waterproof membrane is formed in stomata hole wall surface, have thermal insulation board good
Good waterproof, it is impervious, anti-aging the advantages of.
Compared with prior art, what the present invention obtained has the beneficial effect that：
1) present invention does not add cement or clinker, mainly using industrial solid castoff phosphorus slag as cementitious material, leads to
Excitation of the parlkaline exciting agent to its lateral reactivity the characteristics of with high-early-strength, is solved using normal silicate water
Mud setting time is long, the problems such as mould and strength development are slow, demoulding time is long, mold turnover is low of easily collapsing, and also solves use
Early-strong-fast-hard type cement cost is higher, the problem of dusting, strength retraction easily occurs in the plate surface later stage.
2) phosphorous slag micropowder is replaced the cementitious materials such as cement or clinker, phosphorous slag micropowder and cement phase by the present invention completely
Than production technology is reduced to " mill " by " two mills one are burnt ", greatly reduces energy consumption and carbon emission, and can largely utilize
Industrial solid castoff, energy conservation and environmental protection.
3) alkali-activated carbonatite phosphorous slag micropowder light foam concrete thermal insulation board prepared by the present invention has early-strong-fast-hard, lightweight height
By force, thermal and insulating performance is good and the advantages of water absorption rate is low, and is conducive to energy saving, reduces resource exploitation, is inorganic heat preservation material
Important impetus is played in the sustainable development of material.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that specific embodiment described herein is not used to limit only to explain the present invention
The fixed present invention.
The embodiment of the present invention need to be weighed various raw materials by proportion speed, and weighing error must be less than 1%；In following embodiment
Unless specific instructions, the reagent or raw material are commercial reagent or industrial products.
The phosphorous slag micropowder is obtained industrial residue when producing yellow phosphorus using electric furnace process, then the powder obtained after grinding
Body material, specific surface area are 450~550m2/kg。
Embodiment 1
A kind of alkali-activated carbonatite phosphorous slag micropowder light foam concrete thermal insulation board, by waterglass, (modulus is the alkali-activator
And sodium sulphate in mass ratio 3 0.8):1 tune is mixed, and adjustable solidification agent is by ground blast furnace slag (specific surface area 400m2/ kg) and powder
Fly ash micro-bead (specific surface area 900m2/ kg) by 2.5:1 mass ratio mixes, and modifying agent is by light calcined magnesia (calcining temperature
Spend is 600 DEG C) and white lime by 2:1 mass ratio mixes；The preparation method packet of the light foam concrete thermal insulation board
Include following steps：
1) raw material weighs, and mass percent shared by each raw material is：Phosphorous slag micropowder 35%, alkali-activator 6%, adjustable solidification agent
12%th, modifying agent 15%, polypropylene fibre 0.4%, compound foaming agent 9%, water 22.6%.
2) phosphorous slag micropowder, alkali-activator, adjustable solidification agent, modifying agent, polypropylene fibre and water are placed in agitated kettle and stirred
Uniformly, uniform sizing material, stir speed (S.S.) 300r/min are obtained.
3) by compound foaming agent using compressed air method foam, in foaming process directly by foam inject obtained by uniformly
It stirs evenly in slurry, stir speed (S.S.) 50r/min, until foaming finishes, and foam concrete of the mix after uniform is injected
Pattern is placed demould afterwards for 24 hours under field conditions (factors), obtains foaming insulation board.
4) waterproofing agent of organosilicon is weighed according to the ratio of raw material gross mass 0.3% step 1) described, and is diluted with water to 30
Again (volume), using sealing spray gun even application in each surface of gained foaming insulation board；Naturally dry, do not get wet natural curing
For 24 hours, the alkali-activated carbonatite phosphorous slag micropowder light foam concrete thermal insulation board is obtained.
In the present embodiment, presetting period for being starched only under gained normal consistency is 42min, final setting time 64min, preparation
Alkali-activated carbonatite phosphorous slag micropowder light foam concrete thermal insulation board Absolute Dry Density is 250kg/m3, 3d compression strength 0.36MPa, 28d resist
Compressive Strength is 0.63MPa, thermal conductivity factor 0.051W/mK, water absorption rate 5%.
Embodiment 2
A kind of alkali-activated carbonatite phosphorous slag micropowder light foam concrete thermal insulation board, by waterglass, (modulus is the alkali-activator
And sodium sulphate in mass ratio 5 1.2):1 tune is mixed, and adjustable solidification agent is by ground blast furnace slag (specific surface area 450m2/ kg) and powder
Fly ash micro-bead (specific surface area 950m2/ kg) by 2.8:1 mass ratio mixes, and modifying agent is by light calcined magnesia (calcining temperature
Spend is 800 DEG C) and white lime by 3:1 mass ratio mixes；The preparation method packet of the light foam concrete thermal insulation board
Include following steps：
1) raw material weighs, and mass percent shared by each raw material is：Phosphorous slag micropowder 39%, alkali-activator 7%, adjustable solidification agent
10%th, modifying agent 9%, polypropylene fibre 0.8%, compound foaming agent 10%, water 24.2%.
2) phosphorous slag micropowder, alkali-activator, adjustable solidification agent, modifying agent, polypropylene fibre and water are placed in agitated kettle and stirred
Uniformly, uniform sizing material, stir speed (S.S.) 350r/min are obtained.
3) by compound foaming agent using compressed air method foam, in foaming process directly by foam inject obtained by uniformly
It stirs evenly in slurry, stir speed (S.S.) 80r/min, until foaming finishes, and foam concrete of the mix after uniform is injected
Pattern is placed demould afterwards for 24 hours under field conditions (factors), obtains foaming insulation board.
4) waterproofing agent of organosilicon is weighed according to the ratio of raw material gross mass 0.4% step 1) described, and is diluted with water to 40
Again (volume), using sealing spray gun even application in each surface of gained foaming insulation board；Naturally dry, do not get wet natural curing
For 24 hours, the alkali-activated carbonatite phosphorous slag micropowder light foam concrete thermal insulation board is obtained.
In the present embodiment, presetting period for being starched only under gained normal consistency is 33min, final setting time 49min, preparation
Alkali-activated carbonatite phosphorous slag micropowder light foam concrete thermal insulation board Absolute Dry Density is 195kg/m3, 3d compression strength is 0.25MPa, 28d
Compression strength is 0.46MPa, thermal conductivity factor 0.045W/m.K, water absorption rate 6%.
Embodiment 3
A kind of alkali-activated carbonatite phosphorous slag micropowder light foam concrete thermal insulation board, by waterglass, (modulus is the alkali-activator
And sodium sulphate in mass ratio 4 1.0):1 tune is mixed, and adjustable solidification agent is by ground blast furnace slag (specific surface area 430m2/ kg) and powder
Fly ash micro-bead (specific surface area 1000m2/ kg) by 3:1 mass ratio mixes, and modifying agent is by light calcined magnesia (calcining temperature
Spend is 850 DEG C) and white lime by 4:1 mass ratio mixes；The preparation method packet of the light foam concrete thermal insulation board
Include following steps：
1) raw material weighs, and mass percent shared by each raw material is：Phosphorous slag micropowder 36%, alkali-activator 10%, adjustable solidification agent
9%th, modifying agent 10%, polypropylene fibre 0.6%, compound foaming agent 12%, water 22.4%.
2) phosphorous slag micropowder, alkali-activator, adjustable solidification agent, modifying agent, polypropylene fibre and water are placed in agitated kettle and stirred
Uniformly, uniform sizing material, stir speed (S.S.) 350r/min are obtained.
3) by compound foaming agent using compressed air method foam, in foaming process directly by foam inject obtained by uniformly
It stirs evenly in slurry, stir speed (S.S.) 100r/min, until foaming finishes, and foam concrete of the mix after uniform is injected
Pattern is placed demould afterwards for 24 hours under field conditions (factors), obtains foaming insulation board.
4) waterproofing agent of organosilicon is weighed according to the ratio of raw material gross mass 0.5% step 1) described, and is diluted with water to 50
Again (volume), using sealing spray gun even application in each surface of gained foaming insulation board；Naturally dry, do not get wet natural curing
For 24 hours, the alkali-activated carbonatite phosphorous slag micropowder light foam concrete thermal insulation board is obtained.
In the present embodiment, presetting period for being starched only under gained normal consistency is 29min, final setting time 41min, preparation
Alkali-activated carbonatite phosphorous slag micropowder light foam concrete thermal insulation board Absolute Dry Density is 150kg/m3, 3d compression strength is 0.17MPa, 28d
Compression strength is 0.30MPa, thermal conductivity factor 0.042W/m.K, water absorption rate 8%.
The foregoing is merely presently preferred embodiments of the present invention, to a variety of modifications of these embodiments to the professional skill of this field
It will be apparent for art personnel, therefore, the present invention is not intended to be limited to the embodiments shown herein, but will
Meet the most wide range consistent with principles of this disclosure and features of novelty.
Claims (5)
- A kind of 1. alkali-activated carbonatite phosphorous slag micropowder light foam concrete thermal insulation board, which is characterized in that mass percent shared by each raw material For：Phosphorous slag micropowder 35~39%, alkali-activator 6~10%, adjustable solidification agent 7~12%, modifying agent 9~15%, fiber 0.4~ 0.8%, foaming agent 9~12%, water 22~26%；The adjustable solidification agent is by ground blast furnace slag and fly ash micro-sphere with (2.5~3):1 mass ratio mixes, wherein levigate The specific surface area of blast-furnace cinder is 400~450m2/ kg, the specific surface area of fly ash micro-sphere is 850~1000m2/kg；The modifying agent is by magnesia and white lime with (2~4):1 mass ratio mixes, and wherein magnesia is light burnt powder, Calcination temperature is 600~850 DEG C.
- 2. alkali-activated carbonatite phosphorous slag micropowder light foam concrete thermal insulation board according to claim 1, which is characterized in that the phosphorus The powder body material that the industrial residue that slag micro mist generates when being and producing yellow phosphorus using electric furnace process obtains after grinding, specific surface area are 450~550m2/kg。
- 3. alkali-activated carbonatite phosphorous slag micropowder light foam concrete thermal insulation board according to claim 1, which is characterized in that the alkali Property exciting agent is by waterglass and sodium sulphate with (3~5):1 mass ratio mixes, wherein the modulus of waterglass for 0.8~ 1.2。
- 4. alkali-activated carbonatite phosphorous slag micropowder light foam concrete thermal insulation board according to claim 1, which is characterized in that the fibre It ties up as polypropylene fibre；Foaming agent is compound foaming agent.
- 5. the preparation method of any one of Claims 1 to 4 alkali-activated carbonatite phosphorous slag micropowder light foam concrete thermal insulation board, special Sign is, includes the following steps：1) raw material weighs, and mass percent shared by each raw material is：Phosphorous slag micropowder 35~39%, alkali-activator 6~10% are adjusted solidifying Agent 7~12%, modifying agent 9~15%, fiber 0.4~0.8%, foaming agent 9~12%, water 22~26%；2) distributed slurry is made in the mixing of the phosphorous slag micropowder weighed, alkali-activator, adjustable solidification agent, modifying agent, fiber and water, Stir speed (S.S.) is 300~400r/min；3) using compressed air method foam is made, and directly foam is noted in foaming process in foaming agent by the foaming agent weighed Enter and stirred evenly in distributed slurry obtained by step 2), stir speed (S.S.) is 50~100r/min, until foaming agent foam finishes, will be mixed Foam concrete injection pattern after closing uniformly, stands demoulding, obtains foaming insulation board；4) waterproofing agent of organosilicon is weighed according to the ratio of raw material gross mass 0.3~0.5% step 1) described, it is diluted with water to 30~ 50 times of volumes, using sealing spray gun even application in each surface of foaming insulation board obtained by step 3)；Naturally dry is not got wet Natural curing obtains the alkali-activated carbonatite phosphorous slag micropowder light foam concrete thermal insulation board.
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| CN105859203A (en) * | 2016-04-11 | 2016-08-17 | 江苏建筑职业技术学院 | Biomass-doped enhanced concrete |
| CN106518155B (en) * | 2016-11-18 | 2017-11-10 | 中建七局第四建筑有限公司 | Geopolymer base thermal insulation mortar with waterproof fireproofing function |
| CN108249789A (en) * | 2018-01-15 | 2018-07-06 | 三峡大学 | A kind of phosphorus slag base compound cementitious matter of no first-hand datum and preparation method thereof |
| CN108516755B (en) * | 2018-07-06 | 2020-12-25 | 四川建筑职业技术学院 | Inorganic polymer foam material prepared from sludge and preparation method thereof |
| CN108840653A (en) * | 2018-08-15 | 2018-11-20 | 同济大学 | High-strength heat-insulating material of a kind of polypropylene fibre enhancing green and preparation method thereof |
| CN111574241A (en) * | 2020-05-15 | 2020-08-25 | 江苏银辉生态科技有限公司 | HKS modified polypropylene heat preservation sound insulation board |
| CN113264717B (en) * | 2021-06-11 | 2023-03-21 | 东北大学 | Large-mixing-amount solid waste base-activated foam concrete and preparation method thereof |
| CN113716920A (en) * | 2021-10-20 | 2021-11-30 | 福建农林大学 | Foam concrete wall material with industrial waste replacing cement in large proportion |
| CN115784673B (en) * | 2023-02-06 | 2023-06-16 | 河北工业大学 | Thermal insulation concrete containing bead structure composite filler and preparation method thereof |
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| CN101328051A (en) * | 2008-07-28 | 2008-12-24 | 中国建筑第四工程局有限公司 | Phosphorus slag aerated concrete building blocks and preparation thereof |
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