CN102372476B - Inorganic thermal insulation light mortar and construction method thereof - Google Patents
Inorganic thermal insulation light mortar and construction method thereof Download PDFInfo
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- CN102372476B CN102372476B CN 201110226486 CN201110226486A CN102372476B CN 102372476 B CN102372476 B CN 102372476B CN 201110226486 CN201110226486 CN 201110226486 CN 201110226486 A CN201110226486 A CN 201110226486A CN 102372476 B CN102372476 B CN 102372476B
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- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 52
- 238000009413 insulation Methods 0.000 title claims abstract description 37
- 238000010276 construction Methods 0.000 title abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 53
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 23
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- 239000003795 chemical substances by application Substances 0.000 claims description 22
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- 239000000843 powder Substances 0.000 claims description 14
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- 239000000945 filler Substances 0.000 claims description 6
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- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
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- 239000002131 composite material Substances 0.000 claims description 3
- 235000019359 magnesium stearate Nutrition 0.000 claims description 3
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- 239000011398 Portland cement Substances 0.000 claims description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 239000011324 bead Substances 0.000 claims description 2
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 2
- 235000013539 calcium stearate Nutrition 0.000 claims description 2
- 239000008116 calcium stearate Substances 0.000 claims description 2
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- 229920002678 cellulose Polymers 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
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- 238000005336 cracking Methods 0.000 abstract description 13
- 239000012774 insulation material Substances 0.000 abstract description 6
- 230000006378 damage Effects 0.000 abstract description 5
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- 238000005034 decoration Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
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- 108010010803 Gelatin Proteins 0.000 description 5
- 239000004744 fabric Substances 0.000 description 5
- 239000000499 gel Substances 0.000 description 5
- 239000008273 gelatin Substances 0.000 description 5
- 229920000159 gelatin Polymers 0.000 description 5
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- 235000011852 gelatine desserts Nutrition 0.000 description 5
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- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
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- KGRVJHAUYBGFFP-UHFFFAOYSA-N 2,2'-Methylenebis(4-methyl-6-tert-butylphenol) Chemical compound CC(C)(C)C1=CC(C)=CC(CC=2C(=C(C=C(C)C=2)C(C)(C)C)O)=C1O KGRVJHAUYBGFFP-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
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- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
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Landscapes
- Building Environments (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses an inorganic thermal insulation light mortar, the mortar is mainly composed of a raw material and water in the following percentage by mass: the raw material is composed of 45-55% of lightweight aggregate, 15-20% of hydraulic material, 12-18% of air-setting material, 7-10% of active stuffing and 5-8% of additives; and the mass ratio of the water to the raw material is 0.15-0.25. The mortar in the invention is selected based on a principle of combining a hydraulic cementing material with an air-setting cementing material to satisfy material strength development and application quality demand and effect under a wall body environment condition; a non-gravity gasification suspension stirring technique is applied for achieving an expected stirring effect of generating no damage on a light thermal insulation material; and a one-time continuous jetting construction technique is utilized for not only solving the air bubbling and cracking problems of a wall body, but also greatly improving the construction quality, thermal insulation effect and construction efficiency.
Description
Technical field
The present invention relates to building material field, specifically a kind of inorganic thermal insulation light mortar and constructional method thereof.
Background technology
Inorganic heat insulation material is widely used in developed country; mainly be because it has good eco-environmental prote; sustainable cycling and reutilization and superpower economical and practical value; china natural resources is extremely limited; the situation of ecological environmental protection situation is increasingly serious; the so large-scale building thermal-insulation energy-saving engineering in the whole nation; need to consume a large amount of lagging materials; as relying on too much organic insulation material; after several years such as thermal insulation layer because of technical reason or meet fire or weather aging goes out of use; will cause severe contamination and let us to pay great economy and other cost to environment; therefore, inorganic heat insulation material; high-performance particularly again; compound cheaply; the research of the inorganic heat insulation material of reusable edible be the direction of Future Development with technology.
Traditional external wall outer insulation mortar generally adopts granular polystyrene mortar heat-insulation system, this system's lightweight, heat insulating, widespread use in the building heat preservation industry, but because low, the water-intake rate of this strength of materials is large, easy hollowing cracking resistance etc., long-term heat preservation and weather resistance extreme difference.Especially granular polystyrene be organic combustible material, inflammable, easily split, fire hazardous, the smoke density of generation is large, toxicity strong and the reactive fatal problem in the majority such as poor of fire, gives building firesafety, has caused great impact and harm.
Traditional kervit microbead insulated sand slurry intensity is high, water regain is little, good endurance, nontoxic, tasteless, do not fire, use safety; shortcoming is that density is high, heat-insulating property is poor, it is heat insulation to be only suitable for south, if insulation must have enough thickness just can reach the energy-saving heat preserving effect.Secondly, traditional plastering technique can stay the potentially dangerous that inevitable cold junction seam causes.
Traditional swelling perlite heat-insulating mortar has similar relative merits to kervit microbead insulated sand slurry, and different is that pearlstone is frangible especially in whipping process, and water regain increase, heat insulation effect are reduced.Especially the gelling material that above three kinds of thermal insulation mortars adopt mostly is greatly cement based, gypsum base or organic sizing agent.Facts have proved, the disadvantages outweigh the advantages for these gelling material of single use, is not suitable for the external wall outer insulation environmental requirement.
Summary of the invention
The problem that exists in order to solve above-mentioned prior art, the invention provides a kind of inorganic thermal insulation light mortar and constructional method thereof, this mortar adopts the closed pore fine perlite to replace organic granular polystyrene and other light materials, replace common cement with the special gelatin gel material, replace fibre crack-resistance, strongthener with fine needle-like packing material, thereby embodied the many excellent properties of mortar by rational Match and an amount of admixture of water, air hardening cementitious materials.
Technical scheme of the present invention is achieved in that a kind of inorganic thermal insulation light mortar, described mortar mainly is comprised of raw material and the water of following mass percent, described raw material is: aglite 45-55%, hydraulic material 15-20%, air-setting material 12-18%, activity filler 7-10%, admixture 5-8%, the mass ratio=0.15-0.25 of described water and raw material;
Described aglite is one or more in closed pore fine perlite, expanded vermiculite and the glass bead;
Described hydraulic material is one or more of ordinary Portland cement, high-alumina cement and aluminosulfate cement;
Described air-setting material is bassanite, unslaked lime or both mixtures;
Described activity filler is needle shape wollastonite powder;
Described admixture comprises carboxyethyl methylphosphinate Mierocrystalline cellulose, dispersion agent, water-resisting agent and NNO air entrapment agent.
When described air-setting material adopted the mixture of bassanite and unslaked lime, its mass ratio was unslaked lime: bassanite=1:0.5-3.5.
The density of described aglite is 50-100kg/m
3
Described dispersion agent is the redispersible rubber powder.
Described water-resisting agent is for being calcium stearate water-resisting agent, Magnesium Stearate water-resisting agent or silane composite water-proof agent.
The length-to-diameter ratio of described needle shape wollastonite powder 〉=1.25.
The constructional method of inorganic thermal insulation light mortar is prepared mortar in proportion, and its denseness is controlled between 75～80mm, adjusts shotcrete machine jet velocity 3～5m/s, keeps spraying apart from vertical wall of 30～50cm.
Described mortar process for preparation is: raw material is sent into homogenizing storehouse, and the wind pressure of work of control homogenizing storehouse stirred 5-10 minute under the strength suspended state in 0.1～0.2Mpa scope.
The mode of multi-injection is adopted in described injection, and each thickness that sprays is 5-10mm.
The invention has the beneficial effects as follows: 1. heat-insulation and heat-preservation: thermal conductivity is 0.040-0.060W/ (m .k), and the 20-30 that thermal resistance is about ordinary mortar doubly.2. lightweight: dry volume density is 100-200kg/m
3, be equivalent to about 1/5～1/10 of conventional cement mortar, can alleviate the whole building load.3. sound-proofing: spray in the light heat-insulation mortar and contain a large amount of separated foams, and be evenly distributed, sound absorbing power is 0.05-0.20%, is 5 times of ordinary mortar, possesses the function of effective sound insulation.4. water tolerance: closed pore fine perlite light mortar water-absorbent is less, and coefficient of softening is high, and spray technology makes space, the bubble of sealing have good globality and water resistance.5. weather resistance: it is identical with the main construction life-span that closed pore fine perlite light mortar belongs to the inorganic heat preservation system.6. crushing resistance: ultimate compression strength is 0.6-5.5Mpa.7. construction is simple: project installation mostly is greatly stickup, jointing two procedures are finished insulation and decorative engineering operation, when needing decorative scene, only needs to use sandblast machine can realize the automatic blasting decorative operation, and workload is 80-200m
2/ man-day.8. process for processing: insulation, decoration light mortar belong to unsetting product, during use, are not subjected to impact and the restriction of construction area, size, pattern, can construct according to engine request.9. the feature of environmental protection: insulation and decoration light mortar desired raw material is closed pore fine perlite, gelling material and a small amount of tackiness agent, does not contain the objectionable impuritiess such as benzene, formaldehyde, has avoided environmental pollution and hidden fire-fighting danger.
The selection principle that adopts special hydraulic cementing materials and air hardening cementitious materials to combine has reached under the body of wall envrionment conditions, and strength of materials development and functional quality require and effect.As everyone knows: the advantage of hydraulic cementing materials be not water funk, intensity is high, as long as enough water is arranged, just can bring into play lasting gain in strength.Yet the body of wall mortar is a high thin layer flaky material that has dried in the air, and namely effective water conservation can not provide extraneous water continuously, and evaporated water is exceedingly fast, and does not have the equal strength performance, and hydraulic cementing materials has just lost hydration activity.In air hardening cementitious materials when sclerosis, do not need moisture, but the product after the sclerosis is feared moisture especially, very easily absorbs water and lose original intensity, weather resistance extreme difference.The matching principle that the present invention selects fast solidifying, the fast gentle hard material of hard special gelling material to combine, control water, air-setting material proportion are between 1:1～1:1.2, the curing water consumption is large at most for hydraulic material, air-setting material at most water regain is large, in order effectively to have overcome above problem, must strictly control water, air-setting material proportion, reach the invention effect of mutual supplement with each other's advantages.
Adopt agravic gasification suspension method to stir, obtained the breakthrough of mixing procedure method.Traditional dry-mixed mortar production method mostly is greatly mechanical stirring, and closed perlite is to select natural peral rock ore deposit, forms through ore in sand form processing → preheating → Multi-stage heating → high-temperature expansion vitreous → deepfreeze → grading → packing.Behind electric furnace high-temperature expansion sintering; it is little round and continuous vitreous shell arranged that the perlite particle surface is, pore closure and inner be hollow structure substantially, examine under a microscope as complete closed pore and be glittering and translucent particle; but frangible especially, this also is the major defect of closed perlite.In case after the fragmentation of ball-type closed pore shape, can make material higher water absorption and its thermal and insulating performance of reduction occur, tap density also can increase.Therefore, to guarantee as far as possible that in loading and unloading, transportation, accumulation deposit, production process the vitreous shell of ball-type closed perlite can not be damaged.Percentage of damage will reach more than 50% during the ultralight closed perlite of evidence machinery strong stirring, therefore, not reach the heat preservation and energy conservation effects of expection.The present invention adopts agravic gasification suspension stirring technique, and control is stirred expansion storehouse wind pressure of work in 0.1～0.2Mpa scope, keeps enough excess air coefficients, has reached the unabroken expection mixing effect of light heat insulation material structure.
The spray technology construction has obtained the breakthrough of constructional method.Traditional thermal insulation mortar constructional method is that layering is scraped and smeared mortar, whenever scrape to smear and once just stay the cold joint seam one, moisture in the cold joint seam is subjected to the thermogenesis gas expansion, the icing volume of catching a cold increases, and when body of wall reaches dew-point temperature, moisture becomes liquid corrosion body of wall, hollowing and cracking occur, and construction is renderd a service low.The present invention adopts disposable continuous injection construction technology, has not only solved wall hollow drum, problem of Cracking, and construction quality, heat insulation effect, construction are renderd a service and all be significantly increased.In order to guarantee high intensity and low rebound degree, needing control mortar W/C is between 0.15～0.25.Presetting period≤5min, final setting time≤10min, time of coagulation, longer rebound degree was higher, should control in rebound degree≤2%, jet velocity 3.0～6.0m/s, jet length 30-50mm, jet thickness 50～70mm, every layer thickness≤5mm, through continuous high speed jet impact repeatedly, mortar bonding power and intensity just are significantly increased.
Insulation construction need not to arrange fiberglass gridding cloth or the asbestos of enhancing, cracking resistance, has obtained the breakthrough of thermal insulation structure design.Traditional mortar must strengthen with anti-crack fiber cloth or asbestos owing to hollowing, cracking, and especially the surface layer mortar very easily ftractures, and the enhancing of one deck or which floor grid cloth, anticracking often are set.But fiberglass gridding cloth can only overcome the destruction that the stress of vertical and horizontal both direction produces, and can not overcome the stress rupture of other direction, and glass fibre is under high alkalinity, the erosion resistance extreme difference, can only realize early stage enhancing, demand of anti-crack, almost not have the effect of cracking resistance, enhancing after several years.The employing asbestos also can occur absorbing water greatly, intensity environmental issue low and in the majority.The present invention adopts needle shape wollastonite powder to replace asbestos and the fibrous mesh cloth harmful to HUMAN HEALTH, has reached cracking resistance, the reinforced effects of expection.This mainly be because, wollastonite makes the lagging material that has added acicular wollastonite have more shock resistance and bend resistance intensity through still keeping its unique acicular structure behind the special processing process, abrasive wear resistance also has corresponding raising.In the building heat preservation field, in acicular wollastonite random distribution and the material, effectively stoped the destruction of various stress, overcome the common hollowing of body of wall and problem of Cracking, this invention technology will be by more widely promotion and application.It should be noted the acicular wollastonite length-to-diameter ratio of selecting necessary 〉=1:25 doubly, volume is more than 5%, and keeps puddling evenly, otherwise cracking resistance, reinforced effects are not obvious.
Embodiment
Below in conjunction with embodiment the present invention is further explained explanation.
Embodiment 1 thermal-insulation mortar
The raw material of mortar consists of:
1, density 80kg/m
3Level closed pore fine perlite 55%;
2, CSA special gelatin gel material (being mixed by hydraulic material and active fillers) 20%
3,80 order bassanite (air-setting material): 12%;
4,60 orders (L/D28) needle shape wollastonite powder: 8%;
5, admixture total amount: 5.0%;
Wherein:
Hydroxyethylmethyl-cellulose (HEMC): 0.8%;
Re-dispersible glue powder: 1.3%;
Magnesium Stearate water-resisting agent: 1.7%;
NNO air entrapment agent (methylene-bis bitter edible plant sodium sulfonate): 1.2%
Wherein, the preparation method of CSA special gelatin gel material is: CAS grog=18% and gypsum=6%(are all belonged to hydraulic material); Active packing material three closes powder (copper ore powder 1: gold mine powder 1: extra large ash discharge 1)=76%; Intergrinding to specific surface area is 3500-4500cm
2/ g makes CSA special gelatin gel material.
Thermal-insulation mortar performance index sees the following form
The constructional method of above-mentioned mortar is:
Press the ratio control slurry denseness of 25kg light mortar 5kg water between 75～80mm, adjust shotcrete machine jet velocity 3～5m/s, perhaps pistol is with 90 degree, spray vertical with metope of distance that keeps 30～50cm, in order to improve decorative effect, thin spray principle repeatedly improves the coating hiding rare, do not surpass 5mm at every turn, note preventing drain spray, cross spray, spend wall, wrinkling or sagging phenomenon, the auxiliary process such as can take in case of necessity to roll, be coated with, brush, scrape and improve decorative effect, also can imitate according to design the decorations such as stone, plastic-blasting.
Embodiment 2 cracking resistance decoration types
The raw material of mortar consists of:
1, density 100kg/m
3Level closed pore fine perlite: 45%;
2, CSA special gelatin gel material (being mixed by hydraulic material and activity filler) 15%;
3,80 order bassanite (air-setting material): 12%;
4,60 orders (L/D28) needle shape wollastonite powder: 8%;
5, colored breeze 12%;
6, admixture total amount: 8%;
Wherein:
Hydroxyethylmethyl-cellulose (HEMC): 1.3%;
Re-dispersible glue powder 1.8%;
Silane composite water-proof agent 2.2%;
EE44 epoxy emulsion (tackiness agent) 2.7%.
Cracking resistance decoration type mortar performance index
The constructional method of cracking resistance decoration type mortar is with embodiment 1.
The above; only be the better embodiment of the present invention; but protection scope of the present invention is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to replacement or change according to technical scheme of the present invention and inventive concept thereof, all should be encompassed within protection scope of the present invention.
Claims (8)
1. inorganic thermal insulation light mortar, it is characterized in that, described mortar mainly is comprised of raw material and the water of following mass percent, described raw material is: aglite 45-55%, hydraulic material 15-20%, air-setting material 12-18%, activity filler 7-10%, admixture 5-8%, the mass ratio=0.15-0.25 of described water and raw material; The ratio of hydraulic material and air-setting material is 1:1～1:1.2;
Described aglite is one or more in closed pore fine perlite, expanded vermiculite and the glass bead;
Described hydraulic material is one or more of ordinary Portland cement, high-alumina cement and aluminosulfate cement;
Described air-setting material is bassanite, unslaked lime or both mixtures;
Described activity filler is needle shape wollastonite powder;
Described admixture comprises carboxyethyl methylphosphinate Mierocrystalline cellulose, dispersion agent, water-resisting agent and NNO air entrapment agent.
2. inorganic thermal insulation light mortar according to claim 1 is characterized in that, when described air-setting material adopted the mixture of bassanite and unslaked lime, its mass ratio was unslaked lime: bassanite=1:0.5-3.5.
3. inorganic thermal insulation light mortar according to claim 1 is characterized in that, the density of described aglite is 50-100kg/m
3
4. inorganic thermal insulation light mortar according to claim 1 is characterized in that, described dispersion agent is the redispersible rubber powder.
5. inorganic thermal insulation light mortar according to claim 1 is characterized in that, described water-resisting agent is for being calcium stearate water-resisting agent, Magnesium Stearate water-resisting agent or silane composite water-proof agent.
6. inorganic thermal insulation light mortar according to claim 1 is characterized in that, the length-to-diameter ratio of described needle shape wollastonite powder 〉=1.25.
7. such as the constructional method of each described inorganic thermal insulation light mortar of claim 1-6, it is characterized in that, prepare in proportion mortar, raw material is sent into homogenizing storehouse, the wind pressure of work of control homogenizing storehouse is in 0.1～0.2Mpa scope, under the strength suspended state, stirred 5-10 minute, its denseness is controlled between 75～80mm, mortar W/C is between 0.15～0.25, presetting period≤5min, final setting time≤10min, in control rebound degree≤2%, adjust shotcrete machine jet velocity 3～5m/s, keep spraying apart from vertical wall of 30～50cm.
8. the constructional method of inorganic thermal insulation light mortar according to claim 7 is characterized in that, the mode of multi-injection is adopted in described injection, and each thickness that sprays is 5-10mm.
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| CN111807866B (en) * | 2020-07-23 | 2022-08-23 | 广东大潮建筑科技有限公司 | Sound-insulation fireproof building material |
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| CN101857410A (en) * | 2010-06-01 | 2010-10-13 | 武汉威尔博科技发展有限公司 | Single-component inorganic heat-insulating mortar and preparation method thereof |
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