CN106278029A - A kind of alkali-activated carbonatite large-doping-amount fly ash cement foaming insulation board and preparation method thereof - Google Patents
A kind of alkali-activated carbonatite large-doping-amount fly ash cement foaming insulation board and preparation method thereof Download PDFInfo
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- CN106278029A CN106278029A CN201610652549.8A CN201610652549A CN106278029A CN 106278029 A CN106278029 A CN 106278029A CN 201610652549 A CN201610652549 A CN 201610652549A CN 106278029 A CN106278029 A CN 106278029A
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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
- C04B28/04—Portland 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
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
- C04B7/243—Mixtures thereof with activators or composition-correcting additives, e.g. mixtures of fly ash and alkali activators
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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
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
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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
- C04B2201/20—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
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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
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention belongs to new green environment protection wall material technical field, be specifically related to a kind of alkali-activated carbonatite large-doping-amount fly ash cement foaming insulation board and preparation method thereof, for construction wall heat-insulation system.The raw material of this alkali-activated carbonatite large-doping-amount fly ash cement foaming insulation board includes each component of following weight proportion: Portland cement 50～70 parts, low-grade flyash 20～35 parts, polypropylene fibre 0.2～0.5 part, cellulose ether 0.014～0.016 part, water 30～50 parts, hydrogen peroxide 4～8 parts, the waterproof foam stabilizer of alkali-activated carbonatite 4～8 parts.This alkali-activated carbonatite large-doping-amount fly ash cement foaming insulation board environmental protection, Low-shrinkage crack, low water absorption, fire resistance height, its apparent density is 200～250kg/m3, comprcssive strength reaches more than 1.1MPa, heat conductivity as little as 0.45～0.6W/ (m K), flame resistant performance rate reaches A1 level.
Description
Technical field
The invention belongs to new green environment protection wall material technical field, be specifically related to a kind of alkali-activated carbonatite large-doping-amount fly ash cement
Foaming insulation board and preparation method thereof, for construction wall heat-insulation system.
Background technology
Cement insulation board uses chemical blowing process, joins hydrogen peroxide by cement, flyash, water, additive, polypropylene
In the slurry of fiber composition, pour rapidly foaming in mould after stirring into, cut after maintenance forms intensity under field conditions (factors)
Make porous light heat preservation plate material.
Comparing to traditional organic heat-insulating plate, cement foaming insulation board has great advantage: (1) fire resistance is good, and cement is sent out
The flame resistant performance of bubble warming plate reaches A1 level, the organic heat-insulating plate of remote ultra-traditional；(2) length in service life and body of wall adhesive property
Good, owing to cement foaming insulation board is cement-based material, design service life can reach the identical time with body of wall, it is not necessary at body of wall
In service life, heat-insulation layer is changed in secondary construction, and owing to being cement-based material with metope, its adhesive property with metope is than biography
System organic heat-insulating plate is more preferable；(3) low cost, cement is a kind of raw material inexpensively, far below other organic heat-insulatings
Material, additionally can add suitable active filler, recycling some solid waste in cement, reduce further
Cost, environmental protection.
Flyash be coal-burning power plant discharge solid waste levigate after product, its main component is silicon, aluminum, calcium, ferrum etc.
Oxide, for a kind of active pozzolanic materials, uses flyash extensively to be made at present in cement-based material
The raw-material cost of production can be reduced with, the interpolation of flyash, reduce the dry contraction that hydrated cementitious causes and the crackle produced,
Increase the water resistance of cement insulation board.But flyash is mainly I grade and II grade of fine coal as the application of mineral admixture
Ash, and the situation that supply falls short of demand is had in some areas.But, having most in the flyash that steam power plant row discharges is loss on ignition
Greatly, III grade or the outer flyash of grade that water demand ratio is high.This part flyash is to the service behaviour of cement material and mechanical property
There is the biggest impact, it is difficult to widely apply.
In the actual production process of cement foaming insulation board, there are some technical barriers: be mainly the mould that collapses of foamed slurry, sink
Fall problem, the shrinkage cracking of cement idiosome to be cut, the water absorption rate of cement foaming insulation board is more high.Adding coal ash is permissible
Cement foamed guarantor's plate resisted shrinkage cracking performance is strengthened, and makes its cell wall become the most closely knit thus reduce product
Water absorption rate.But, flyash, the raising of the most low-grade doping quantity of fly ash, the hole of cement foaming insulation board intensity can be caused
The reduction of wall intensity, and owing to flyash is formed without intensity in early days, production process can cause foaming idiosome early strength
Not enough and collapse mould and the sedimentation that produce.Therefore, use flyash as the use of filler, especially flyash in great mixed amount, it is necessary to
The viscosity of slurry is being adjusted, is reducing mould risk of collapsing；And use alkali-activated carbonatite technology that the activity of flyash is excited.
Summary of the invention
Present invention aim to address some defects present in existing cement foamed product, it is provided that a kind of alkali-activated carbonatite large dosage powder
Coal ash cement foaming insulation board and preparation method thereof.This alkali-activated carbonatite large-doping-amount fly ash cement foaming insulation board be environmental protection,
The warming plate product that Low-shrinkage crack, low water absorption, fire resistance are high, its apparent density is 200～250kg/m3, comprcssive strength
Reaching more than 1.1MPa, heat conductivity as little as 0.45～0.6W/ (m K), flame resistant performance rate reaches A1 level.
For reaching this purpose, the present invention by the following technical solutions:
A kind of alkali-activated carbonatite large-doping-amount fly ash cement foaming insulation board, raw material includes each component of following weight proportion: common
Portland cement 50～70 parts, low-grade flyash 20～35 parts, polypropylene fibre 0.2～0.5 part, cellulose ether 0.014～
0.016 part, water 30～50 parts, hydrogen peroxide 4～8 parts, the waterproof foam stabilizer of alkali-activated carbonatite 4～8 parts.
Concrete, described low-grade flyash is the outer flyash of grade that III grade of flyash or index are less than III grade of flyash.
Concrete, the waterproof foam stabilizer of described alkali-activated carbonatite is the mixture of ammonium stearate emulsion and potassium hydroxide, in described mixture,
The mass concentration of ammonium stearate is 5～5.5wt%, the mass concentration 4.75～5.25wt% of potassium hydroxide.
Preferably, in described mixture, the mass concentration of ammonium stearate is 5.25wt%, mass concentration 5wt% of potassium hydroxide.
The cement that the present invention uses is normal silicate 42.5 cement, and hydrogen peroxide is industrial hydrogen peroxide, mass concentration 27.5%.
Present invention also offers the preparation method of a kind of alkali-activated carbonatite large-doping-amount fly ash cement foaming insulation board, including following step
Rapid: by the waterproof foam stabilizer of alkali-activated carbonatite of the water of 30～50 parts, 4～8 parts, the polypropylene fibre of 0.2～0.5 part, 0.014～
The cellulose ether of 0.016 part is first placed in mixing plant stirring, be subsequently adding the Portland cement of 50～70 parts and 20～
The low-grade flyash stirring of 35 parts is homogeneous slurry, is subsequently adding the rapid of short duration stirring of hydrogen peroxide of 4～8 parts, with starching
Mould foaming poured into by material, and form removal after maintenance, cutting under the conditions of ambient temperature and moisture can be prepared by alkali-activated carbonatite flyash in great mixed amount water
Mud foaming insulation board.
Concrete, described low-grade flyash is the outer flyash of grade that III grade of flyash or index are less than III grade of flyash.
Concrete, the waterproof foam stabilizer of described alkali-activated carbonatite is the mixture of ammonium stearate emulsion and potassium hydroxide, in described mixture,
The mass concentration of ammonium stearate is 5～5.5wt%, the mass concentration 4.75～5.25wt% of potassium hydroxide.
Preferably, in described mixture, the mass concentration of ammonium stearate is 5.25wt%, mass concentration 5wt% of potassium hydroxide.
The present invention, compared with existing cement foaming insulation board, has a following advantage: 1) use Portland cement and flyash
As raw material, conveniently drawing materials, the selection adaptation of production site is big, and production technology transreplication is promoted；2) there is the highest fine coal
Ash volume, and make its activity preferably play by the way of chemi-excitation, this make product have more preferable early strength,
Cracking resistance and water seepage resistant compactness.
The active size of flyash and the number of volume have the biggest impact to the performance of cement insulation board, in order to
Allow flyash play its activity, it is necessary to take certain means that it is excited, improve its intensity in early days, activating flyash
Method has a lot, but the mode that only can be good at adapting to the production of cement foaming insulation board could be used.Alkali swashs
The technology of sending out, at cement-based material, is particularly the most extensively applied in concrete, and the basicity raising yet with concrete can make to mix
Solidifying soil alkali-aggregate reaction odds is greatly improved, and causes the serious endurance issues of concrete, therefore typically all uses water
Glass regulation compound with sodium hydroxide also controls modulus, to reach the limited dual function excited and control basicity.Due to cement
There is not aggregate in foamed board itself, so not having the risk of alkali-aggregate reaction, the present invention uses chemi-excitation method, allows flyash
Active component (active silicon, aluminum oxide) and alkali reaction generate the gum material with intensity.The present invention is in steady bubble group
Alkali-activated carbonatite component potassium hydroxide is added so that foam stabilizer has alkali-activated carbonatite function, thus excites the activity of flyash in Fen,
I.e. initially form intensity in early days.Ammonium stearate emulsion is a kind of efficient foam stabilizer, under the volume lower than common foam stabilizer,
It is used still can largely to reduce sedimentation and the generation of the mould that collapses.Addition due to potassium hydroxide so that steady bubble component is hard
Fat acid ammonium emulsion intercalation method is more preferable, and hydrogen peroxide is easier to decompose under alkaline environment.
Detailed description of the invention
Principle and feature to the present invention are described below, and illustrated embodiment is served only for explaining the present invention, is not intended to limit
The scope of the present invention.
Embodiment 1
The preparation of alkali-activated carbonatite large-doping-amount fly ash cement foaming insulation board comprises the following steps:
Raw material: Portland cement 50kg, flyash 35kg, polypropylene fibre 0.3kg, cellulose ether 15g, water 36kg, double
Oxygen water 5.9kg, alkali-activated carbonatite waterproof foam stabilizer 5kg.
Low-grade flyash index
| Grade | Water requirement | Loss on ignition | Fineness (0.045 μm tails over) |
| Ⅲ | 114% | 14.5% | 43.7% |
The preparation of material: stir in water, the waterproof foam stabilizer of alkali-activated carbonatite, polypropylene fibre, cellulose ether are first placed in mixing plant
10s, is subsequently adding Portland cement and flyash and stirs 3min, until being mixed as homogeneous slurry, is subsequently adding hydrogen peroxide,
Stirring rapidly 10s, slurry is poured into mould foaming immediately, under natural conditions, maintenance 1d extremely forms form removal after some strength,
Cutting, can be prepared by one alkali-activated carbonatite large-doping-amount fly ash cement foaming insulation board of the present invention.
The performance indications of material:
Embodiment 2
The preparation of alkali-activated carbonatite large-doping-amount fly ash cement foaming insulation board comprises the following steps:
Raw material: Portland cement 60kg, flyash 35kg, polypropylene fibre 0.3kg, cellulose ether 20g, water 40kg, double
Oxygen water 6.0kg, alkali-activated carbonatite waterproof foam stabilizer 6kg.
Low-grade flyash index
| Grade | Water requirement | Loss on ignition | Fineness (0.045 μm tails over) |
| Less than III grade | 119% | 16.5% | 46.9% |
The preparation of material: water, the waterproof foam stabilizer of alkali-activated carbonatite, polypropylene fibre, cellulose ether are first placed in mixing plant
Stirring 10s, is subsequently adding Portland cement and flyash and stirs 3min, until being mixed as homogeneous slurry, is subsequently adding double
Oxygen water, stirs rapidly 10s, slurry is poured into mould foaming immediately, after under natural conditions, maintenance 1d extremely forms some strength
Form removal, cutting, can be prepared by one alkali-activated carbonatite large-doping-amount fly ash cement foaming insulation board of the present invention.
The performance indications of material:
Embodiment 3
The preparation of alkali-activated carbonatite large-doping-amount fly ash cement foaming insulation board comprises the following steps:
Raw material: Portland cement 65kg, flyash 32kg, polypropylene fibre 0.4kg, cellulose ether 16g, water 45kg, double
Oxygen water 6.6kg, alkali-activated carbonatite waterproof foam stabilizer 7kg.
Low-grade flyash index
| Grade | Water requirement | Loss on ignition | Fineness (0.045 μm tails over) |
| Ⅲ | 125% | 17.8% | 45.4% |
The preparation of material: stir in water, the waterproof foam stabilizer of alkali-activated carbonatite, polypropylene fibre, cellulose ether are first placed in mixing plant
10s, is subsequently adding Portland cement and flyash and stirs 3min, until being mixed as homogeneous slurry, is subsequently adding hydrogen peroxide,
Stirring rapidly 10s, slurry is poured into mould foaming immediately, under natural conditions, maintenance 1d extremely forms form removal after some strength,
Cutting, can be prepared by one alkali-activated carbonatite large-doping-amount fly ash cement foaming insulation board of the present invention.
The performance indications of material:
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all in the spirit and principles in the present invention
Within, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (8)
1. an alkali-activated carbonatite large-doping-amount fly ash cement foaming insulation board, it is characterised in that raw material includes following weight proportion
Each component: Portland cement 50～70 parts, low-grade flyash 20～35 parts, polypropylene fibre 0.2～0.5 part, fine
Dimension element ether 0.014～0.016 part, water 30～50 parts, hydrogen peroxide 4～8 parts, the waterproof foam stabilizer of alkali-activated carbonatite 4～8 parts.
Alkali-activated carbonatite large-doping-amount fly ash cement foaming insulation board the most according to claim 1, it is characterised in that: described low product
Position flyash is the outer flyash of grade that III grade of flyash or index are less than III grade of flyash.
Alkali-activated carbonatite large-doping-amount fly ash cement foaming insulation board the most according to claim 1, it is characterised in that: described alkali swashs
Sending out foam stabilizer waterproof is the mixture of ammonium stearate emulsion and potassium hydroxide, in described mixture, and the mass concentration of ammonium stearate
It is 5～5.5wt%, the mass concentration 4.75～5.25wt% of potassium hydroxide.
Alkali-activated carbonatite large-doping-amount fly ash cement foaming insulation board the most according to claim 3, it is characterised in that: described alkali swashs
Sending out foam stabilizer waterproof is the mixture of ammonium stearate emulsion and potassium hydroxide, in described mixture, and the mass concentration of ammonium stearate
For 5.25wt%, mass concentration 5wt% of potassium hydroxide.
5. the preparation method of an alkali-activated carbonatite large-doping-amount fly ash cement foaming insulation board, it is characterised in that comprise the following steps:
By the waterproof foam stabilizer of alkali-activated carbonatite of the water of 30～50 parts, 4～8 parts, the polypropylene fibre of 0.2～0.5 part, 0.014～0.016 part
Cellulose ether be first placed in mixing plant stirring, be subsequently adding the Portland cement of 50～70 parts and 20～35 parts low
The stirring of grade flyash for homogeneous slurry, is subsequently adding the hydrogen peroxide stirring of 4～8 parts, with will pouring mould into and be foamed into by slurry
Type, form removal after maintenance, cutting under natural conditions, i.e. prepare alkali-activated carbonatite large-doping-amount fly ash cement foaming insulation board.
The preparation method of alkali-activated carbonatite large-doping-amount fly ash cement foaming insulation board the most according to claim 5, its feature exists
In: described low-grade flyash is flyash outside III grade of flyash or the index grade less than III grade of flyash.
The preparation method of alkali-activated carbonatite large-doping-amount fly ash cement foaming insulation board the most according to claim 5, its feature exists
In: the waterproof foam stabilizer of described alkali-activated carbonatite is the mixture of ammonium stearate emulsion and potassium hydroxide, in described mixture, ammonium stearate
Mass concentration be 5～5.5wt%, the mass concentration 4.75～5.25wt% of potassium hydroxide.
The preparation method of alkali-activated carbonatite large-doping-amount fly ash cement foaming insulation board the most according to claim 7, its feature exists
In: the waterproof foam stabilizer of described alkali-activated carbonatite is the mixture of ammonium stearate emulsion and potassium hydroxide, in described mixture, ammonium stearate
Mass concentration be 5.25wt%, mass concentration 5wt% of potassium hydroxide.
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Cited By (4)
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| CN109384424A (en) * | 2018-11-19 | 2019-02-26 | 泸州时为节能科技有限公司 | A kind of cement foam board and preparation method thereof |
| CN109796170A (en) * | 2019-01-16 | 2019-05-24 | 湖北大学 | A kind of phase transformation temp auto-controlled cement foaming insulation board and its production method |
| CN114105559A (en) * | 2021-11-24 | 2022-03-01 | 石家庄铁道大学 | Green non-fired high-temperature-resistant cement-based material and preparation and detection methods thereof |
| CN115057668A (en) * | 2022-07-28 | 2022-09-16 | 石嘴山市润鑫达新型建材有限公司 | Waterproof plate and preparation method thereof |
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| CN102815960A (en) * | 2012-08-09 | 2012-12-12 | 江苏尼高科技有限公司 | Composite foamed cement heat retaining panel using high-volume fly ash and preparation method thereof |
| CN104496353A (en) * | 2014-12-15 | 2015-04-08 | 广西科技大学 | Foamed cement heat insulation board and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109384424A (en) * | 2018-11-19 | 2019-02-26 | 泸州时为节能科技有限公司 | A kind of cement foam board and preparation method thereof |
| CN109796170A (en) * | 2019-01-16 | 2019-05-24 | 湖北大学 | A kind of phase transformation temp auto-controlled cement foaming insulation board and its production method |
| CN114105559A (en) * | 2021-11-24 | 2022-03-01 | 石家庄铁道大学 | Green non-fired high-temperature-resistant cement-based material and preparation and detection methods thereof |
| CN115057668A (en) * | 2022-07-28 | 2022-09-16 | 石嘴山市润鑫达新型建材有限公司 | Waterproof plate and preparation method thereof |
| CN115057668B (en) * | 2022-07-28 | 2023-10-31 | 石嘴山市润鑫达新型建材有限公司 | Waterproof board and preparation method thereof |
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| CN106278029B (en) | 2018-11-20 |
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