CN105645901B - Light thermal-insulation sheet material prepared with construction refuse regenerated fine powder and preparation method thereof - Google Patents

Light thermal-insulation sheet material prepared with construction refuse regenerated fine powder and preparation method thereof Download PDF

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Publication number
CN105645901B
CN105645901B CN201511019448.9A CN201511019448A CN105645901B CN 105645901 B CN105645901 B CN 105645901B CN 201511019448 A CN201511019448 A CN 201511019448A CN 105645901 B CN105645901 B CN 105645901B
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fine powder
parts
slag
construction refuse
refuse regenerated
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CN105645901A (en
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汪海风
张鹤
徐意
丁新更
杨辉
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Zhejiang University ZJU
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Zhejiang University ZJU
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/24Compositions 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 alkyl, ammonium or metal silicates; containing silica sols
    • C04B28/26Silicates of the alkali metals
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/40Porous or lightweight materials
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Abstract

The invention discloses a kind of light thermal-insulation sheet material prepared with construction refuse regenerated fine powder, it is composed of the following components in parts by weight:Construction refuse regenerated 100 parts of fine powder, 5~15 parts of waterglass, 20~50 parts of slag, 3~5 parts of foaming agent, 0.2~0.5 part of foam stabilizer, 50~100 parts of water;Construction refuse regenerated fine powder crosses 80 mesh sieves, screen over-size≤5%, SiO in chemical analysis2、Al2O3Content sum >=50%;Waterglass is sodium silicate water glass, and slag is to meet《For the ground granulated blast furnace slag in cement and concrete》The slag of S95 levels standard requirement in (GB/T18046-2000), foaming agent is hydrogen peroxide, and foam stabilizer is calcium stearate or odium stearate.The present invention further simultaneously discloses the preparation method of the light thermal-insulation sheet material.

Description

Light thermal-insulation sheet material prepared with construction refuse regenerated fine powder and preparation method thereof
Technical field
The present invention relates to a kind of method that novel light heat preservation plate material is prepared with construction refuse regenerated fine powder, belong to discarded object Resource circulation utilization and green building material field.
Background technology
With Re-search on Urbanization and the continuous development of urban construction, infrastructure construction speed is accelerated, the production of building waste Amount is also growing at top speed.National Development and Reform Committee prints and distributes in December, 2011《Large solid waste comprehensively utilizes embodiment》Data show To show, China's building waste yield in 2005 is 400,000,000 tons, and 2010 are 800,000,000 tons, and also in the rapid growth stage.Build rubbish Rubbish can bring pollution environment, waste soil, destroy the harm such as urban stability, therefore carry out recycling very to building waste It is important.
Light thermal-insulation sheet material includes foamed cement, foam concrete, air entrained concrete etc., and they have low density and low Thermal conductivity factor, be Important building material.It is to realize that construction refuse resource utilizes to prepare light heat insulation material with building waste An important channel.Cai Anlan etc. (building waste prepares the research of foam concrete, New Building Materials, and 2010,9:30) Report and the method for foam concrete is prepared with building waste be:By Portland cement, building waste, EPS and additional After the metering such as agent (intumescent water reducer, exciting agent etc.) plus water premix is uniform, is then proportionally added into the foam (foaming prepared Agent is the clear board cement blowing agent of cloud) stirring, uniform fluidised form slurry, moulding by casting is made.Sample dimensions 100mm × 100mm × 100mm, standard curing to corresponding age are tested.Ancestor roc etc. (lead by building waste foam concrete preparation research, building materials development To 2013,12:51) report and the method for foam concrete is prepared with building waste be:1) foaming agent is prepared, is placed in foaming machine Inside produce uniformly tiny foam;2) cement 10% is substituted according to building waste, 20%, 30%, 35% and 50%5 differences take For ratio, building waste and cement admixture are prepared, is placed in mortar mixer, stirs respectively.3) according to the ratio of mud 0.55 weighs cement and building waste mixture 1000g, measures water 550ml, is placed in mortar mixer to stir slurry is made Body.4) foam for weighing certain mass is added in the slurry to stir, continues to be slowly stirred until foam is dispersed in In slurry, mixing time is controlled in 180s, then well mixed slurry is poured into 100mm × 100mm × 100mm mark Quasi- in-mold molding.5) slight vibrations make slurry be full of mould, with trowel that surface is floating after having poured, surface cover film with Prevent that surface is dry and cracked, go to maintenance.In aobvious strong grade, (construction refuse regenerated fine powder is used for the research of thermal insulation mortar, and buildings in Beijing is big Learn Master's thesis, 2014) report and the method for thermal insulation mortar is prepared with building waste be:By load weighted various dispensings (cement, Building waste, silica flour, granular polystyrene etc.) pour into agitated kettle, agitated kettle is put into after stirring 30s slowly on mixer, by what is weighed up Water pours into, and stirs 30s slowly, stops 15s, is mixed up during pause with scraper in agitated kettle, prevent stirring vane stir less than Siccative be present in the bottom of a pan, 45s is stirred after having suspended soon, is then rapidly added hydrogen peroxide (3s), continue stir 8s, remove stir rapidly Pot is mixed, slurry is uniformly poured in die trial to (40mm × 40mm × 160mm), pours into height control at the 3/4 of die trial height , allow its natural foaming, completion to be foamed, die trial is moved to standard curing room maintenance 48h form removals, it is to be measured.
Light heat insulation material is prepared with building waste and although did some researchs, but still there are many problems to need to solve, such as Building waste pozzolanic activity is low, it is impossible to Ca in cement (OH)2The gelling materials such as reaction generation hydrated calcium silicate, drated calcium aluminate Material, at the same building waste grind again it is very dilute, it is impossible to play humidification of gathering materials, can destroy cement overall structure, reduction cement Intensity.In addition, in existing research, the dosage of building waste is all very low, it is impossible to which obvious play comprehensively utilizes building waste Purpose.
In addition, current light heat insulation material is all using cement as binder materials, and cement can expend in process of production Mass energy, produce greenhouse gases CO2, it is not consistent with the Green Development currently advocated.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of light thermal-insulation sheet material prepared with construction refuse regenerated fine powder And corresponding preparation method.
In order to solve the above-mentioned technical problem, the present invention provides a kind of light thermal insulation board prepared with construction refuse regenerated fine powder Material, it is composed of the following components in parts by weight:
Construction refuse regenerated 100 parts of fine powder;
5~15 parts of waterglass (preferably 10~15 parts)
20~50 parts of slag (preferably 40~50 parts)
3~5 parts of foaming agent (preferably 4~5 parts)
0.2~0.5 part of foam stabilizer (preferably 0.4~0.5 part)
50~100 parts of water (preferably 70~100 parts);
The construction refuse regenerated fine powder crosses 80 mesh sieves, screen over-size≤5%, SiO in chemical analysis2、Al2O3Content sum >=50%;Above-mentioned % is quality %;
Remarks explanation:The construction refuse regenerated fine powder is by discarded sintering common brick, tile, concrete, stone, glass etc. It is process through broken, above-mentioned SiO2、Al2O3Content can be tested by x-ray fluorescence spectrometry instrument to obtain;
The waterglass is sodium silicate water glass, modulus 1.0~1.5,40~50 ° of B é of Baume degrees;
The slag is to meet《For the ground granulated blast furnace slag in cement and concrete》In (GB/T18046-2000) The slag of S95 levels standard requirement;
The foaming agent is H2O2Mass concentration be 38% hydrogen peroxide;
The foam stabilizer is calcium stearate or odium stearate.
The present invention also provides the preparation method (formula is as described above) of above-mentioned light thermal-insulation sheet material, including following step simultaneously Suddenly:
(1) toward adding construction refuse regenerated fine powder, slag, foam stabilizer (belonging to solid material) in batch mixing pond, 100~ 5~10min is mixed under 200rpm rotating speed,;
(2) toward waterglass and water is added in step (1) gains, mixed under 500~1000rpm rotating speeds after 2~5min plus Enter foaming agent, continue at 2~5min of mixing under 500~1000rpm rotating speeds;
(3) in the slurry injection moulding mould that step (2) is prepared to gained, stand 22~26h (such as 24h) and be stripped afterwards, Then 1~2h of steam press maintenance, steam pressure 0.5~1.0MPa of pressure, 150~200 DEG C of temperature;
(4) maintenance rear mold block is cut into (being cut to suitable dimension), obtains light thermal-insulation sheet material.
The present invention prepares light thermal insulation board to build useless garbage regeneration fine powder as raw material using waterglass as alkali-activator Material, the present invention have following advantage:
1st, light thermal-insulation sheet material is prepared by raw material of construction refuse regenerated fine powder, can realizes that waste resource recycles, energy Light thermal-insulation sheet material production cost is reduced, improves product competitiveness in the market;
2nd, SiO in construction refuse regenerated fine powder2、Al2O3Composition can dissolve in highly basic waterglass, separate out AlO4And SiO4Four Face body construction unit, and these construction units can polymerize with silicate in waterglass, generate the ground of 3-D solid structure Polymer gel material, so as to substitute cement, assign sheet material high intensity.
3rd, formula is reasonable in design, introduces slag as admixture, accelerates alkali-activated carbonatite speed, make slurry rate of set and dioxygen Water blown speed is unified, improves foaming materials effect, assigns the low apparent density of sheet material and thermal conductivity factor.
In summary, the present invention is using building waste fine powder as raw material, using slag as accelerator for hardening, under waterglass alkali-activated carbonatite, Geopolymer gelled material (that is, using slag, building waste, the reacted geopolymer of waterglass as binder materials) is synthesized, and With reference to H2O2Foam process, light thermal-insulation sheet material is developed, compound problem with slag by solving building waste fine powder, greatly increase Building waste utilization rate and timber intensity is improved, and optimized by foaming technique, realized and foam hold one's breath porosity is high, diameter It is small, foam circle, steep that wall even compact target, heat preservation plate material is had low thermal conductivity factor.
The present invention prepares the dry apparent density of novel light heat preservation plate material by GB/T 11970- with construction refuse regenerated fine powder 1997 regulation test, compression strength are tested by GB/T11971-1997 regulation, and thermal conductivity factor is entered by GB 10294 regulation OK.
Embodiment
Following part refers both to parts by weight.
Embodiment 1, a kind of method that novel light heat preservation plate material is prepared with construction refuse regenerated fine powder:
It is formulated and is:Construction refuse regenerated fine powder (cross 80 mesh sieves, screen over-size≤5%, SiO in chemical analysis2、Al2O3Content Sum 50%) 100 parts;5 parts of sodium silicate water glass (modulus 1.5,50 ° of B é of Baume degrees), 20 parts of slag (S95 levels), industrial dioxygen 3 parts of water (concentration 38%), 0.2 part of calcium stearate, 50 parts of water.
Industrial hydrogen peroxide is as foaming agent, and calcium stearate is as foam stabilizer.
Production technology is to follow the steps below successively:
(1) according to quantity toward adding construction refuse regenerated fine powder, slag, foam stabilizer these solid materials, mixing in batch mixing pond 5min, rotating speed 200rpm;
(2) toward waterglass and water is added in step (1) gains, foaming agent is added after mixing 5min under 500rpm rotating speeds, Continue 500rpm mixing 5min;
(3) in the slurry injection moulding mould for being prepared step (2), it is stripped after standing 24h, subsequent steam press maintenance 1h, steam pressure pressure 1.0MPa, 200 DEG C of temperature;
(4) maintenance rear mold block is cut to suitable dimension sheet material (50cm × 50cm × 5cm).
Plate property:Dry apparent density 800kg/m3, compression strength 2MPa, thermal conductivity factor 0.15W/ (mK).
Embodiment 2, a kind of method that novel light heat preservation plate material is prepared with construction refuse regenerated fine powder:
It is formulated and is:Construction refuse regenerated fine powder (cross 80 mesh sieves, screen over-size≤5%, SiO in chemical analysis2、Al2O3Content Sum 60%) 100 parts;10 parts of sodium silicate water glass (modulus 1.2,50 ° of B é of Baume degrees), 40 parts of slag (S95 levels), industrial dioxygen 5 parts of water (concentration 38%), 0.5 part of odium stearate, 70 parts of water.
Industrial hydrogen peroxide is as foaming agent, and odium stearate is as foam stabilizer.
Production technology is equal to embodiment 1.
Plate property:Dry apparent density 700kg/m3, compression strength 5MPa, thermal conductivity factor 0.11W/ (mK).
Embodiment 3, a kind of method that novel light heat preservation plate material is prepared with construction refuse regenerated fine powder:
It is formulated and is:Construction refuse regenerated fine powder (cross 80 mesh sieves, screen over-size≤5%, SiO in chemical analysis2、Al2O3Content Sum 65%) 100 parts;15 parts of sodium silicate water glass (modulus 1.0,40 ° of B é of Baume degrees), 50 parts of slag (S95 levels), industrial dioxygen 4 parts of water (concentration 38%), 0.4 part of odium stearate, 80 parts of water.
Industrial hydrogen peroxide is as foaming agent, and odium stearate is as foam stabilizer.
Production technology is equal to embodiment 1.
Plate property:Dry apparent density 600kg/m3, compression strength 6MPa, thermal conductivity factor 0.08W/ (mK).
Embodiment 4, a kind of method that novel light heat preservation plate material is prepared with construction refuse regenerated fine powder:
It is formulated and is:Construction refuse regenerated fine powder (cross 80 mesh sieves, screen over-size≤5%, SiO in chemical analysis2、Al2O3Content Sum 70%) 100 parts;15 parts of sodium silicate water glass (modulus 1.0,40 ° of B é of Baume degrees), 50 parts of slag (S95 levels), industrial dioxygen 5 parts of water (concentration 38%), 0.5 part of calcium stearate, 100 parts of water.
Industrial hydrogen peroxide is as foaming agent, and calcium stearate is as foam stabilizer.
Production technology is equal to embodiment 1.
Plate property:Dry apparent density 550kg/m3, compression strength 6MPa, thermal conductivity factor 0.07W/ (mK).
Embodiment 5, a kind of method that novel light heat preservation plate material is prepared with construction refuse regenerated fine powder:
It is formulated and is:Construction refuse regenerated fine powder (cross 80 mesh sieves, screen over-size≤5%, SiO in chemical analysis2、Al2O3Content Sum 60%) 100 parts;12 parts of sodium silicate water glass (modulus 1.0,40 ° of B é of Baume degrees), 35 parts of slag (S95 levels), industrial dioxygen 3.5 parts of water (concentration 38%), 0.25 part of calcium stearate, 100 parts of water.
Industrial hydrogen peroxide is as foaming agent, and calcium stearate is as foam stabilizer.
Production technology is equal to embodiment 1.
Plate property:Dry apparent density 550kg/m3, compression strength 2MPa, thermal conductivity factor 0.10W/ (mK).
Comparative example 1,
By in embodiment 4 " construction refuse regenerated fine powder (and cross 80 mesh sieves, screen over-size≤5%, SiO in chemical analysis2、Al2O3 Content sum 70%) " be changed to " construction refuse regenerated fine powder (cross 80 mesh sieves, screen over-size≤5%, SiO in chemical analysis2、 Al2O3Content sum 40%), remaining equivalent integers 4.
Plate property:Dry apparent density 580kg/m3, compression strength 3MPa, thermal conductivity factor 0.09W/ (mK).
Comparative example 2,
By in embodiment 4 " construction refuse regenerated fine powder (and cross 80 mesh sieves, screen over-size≤5%, SiO in chemical analysis2、Al2O3 Content sum 70%) " be changed to " construction refuse regenerated fine powder (cross 80 mesh sieves, screen over-size≤8%, SiO in chemical analysis2、 Al2O3Content sum 20%), remaining equivalent integers 4.
Plate property:Dry apparent density 600kg/m3, compression strength 1MPa, thermal conductivity factor 0.12W/ (mK).
Comparative example 3,
" 15 parts of sodium silicate water glass (modulus 1.0,40 ° of B é of Baume degrees) " in embodiment 4 is changed to " sodium silicate water glass 15 parts of (modulus 0.8,40 ° of B é of Baume degrees) ", remaining equivalent integers 4.
Plate property:Dry apparent density 650kg/m3, compression strength 2MPa, thermal conductivity factor 0.12W/ (mK).
Comparative example 4,
" 15 parts of sodium silicate water glass (modulus 1.0,40 ° of B é of Baume degrees) " in embodiment 4 is changed to " sodium silicate water glass 15 parts of (modulus 1.8,40 ° of B é of Baume degrees) ", remaining equivalent integers 4.
Plate property:Dry apparent density 900kg/m3, compression strength 2MPa, thermal conductivity factor 0.09W/ (mK).
Comparative example 5,
" 50 parts of slag (S95 levels) " in embodiment 4 is changed to " 15 parts of slag (S95 levels) ", remaining equivalent integers 4.
Plate property:Dry apparent density 650kg/m3, compression strength 0.8MPa, thermal conductivity factor 0.21W/ (mK).
Comparative example 6,
By " subsequent steam press maintenance 1h, steam pressure pressure 1.0MPa, 200 DEG C of the temperature in the production technology of embodiment 4;" be changed to " subsequent steam press maintenance 1.5h, steam pressure pressure 0.3MPa, 140 DEG C of temperature ", remaining equivalent integers 4.
Plate property:Dry apparent density 580kg/m3, compression strength 2MPa, thermal conductivity factor 0.08W/ (mK).
Finally, it is also necessary to it is noted that listed above is only several specific embodiments of the invention.Obviously, this hair It is bright to be not limited to above example, there can also be many deformations.One of ordinary skill in the art can be from present disclosure All deformations for directly exporting or associating, are considered as protection scope of the present invention.

Claims (2)

1. the light thermal-insulation sheet material prepared with construction refuse regenerated fine powder, it is characterized in that being composed of the following components in parts by weight:
The construction refuse regenerated fine powder crosses 80 mesh sieves, screen over-size≤5%, SiO in chemical analysis2、Al2O3Content sum 70%; Above-mentioned % is quality %;
The waterglass is sodium silicate water glass, modulus 1.0,40 ° of B é of Baume degrees;
The slag is to meet《For the ground granulated blast furnace slag in cement and concrete》S95 levels in (GB/T18046-2000) The slag of standard requirement;
The foaming agent is H2O2Mass concentration be 38% hydrogen peroxide;
The foam stabilizer is calcium stearate.
2. the preparation method of light thermal-insulation sheet material as claimed in claim 1, it is characterized in that comprising the following steps:
(1) toward adding construction refuse regenerated fine powder, slag, foam stabilizer in batch mixing pond, mixing 5 under 100~200rpm rotating speed~ 10min;
(2) toward waterglass and water is added in step (1) gains, hair is added after 2~5min is mixed under 500~1000rpm rotating speeds Infusion, continue at 2~5min of mixing under 500~1000rpm rotating speeds;
(3) in the slurry injection moulding mould that step (2) is prepared to gained, it is stripped after standing 22~26h, subsequent steam press maintenance 1 ~2h, steam pressure 0.5~1.0MPa of pressure, 150~200 DEG C of temperature;
(4) maintenance rear mold block is cut, obtains light thermal-insulation sheet material.
CN201511019448.9A 2015-12-30 2015-12-30 Light thermal-insulation sheet material prepared with construction refuse regenerated fine powder and preparation method thereof Active CN105645901B (en)

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CN106277975A (en) * 2016-08-10 2017-01-04 卓达新材料科技集团威海股份有限公司 A kind of hot-forming fly ash building rubbish sheet material
CN106277973A (en) * 2016-08-10 2017-01-04 卓达新材料科技集团威海股份有限公司 A kind of hot-forming slag building waste sheet material
CN106277970A (en) * 2016-08-10 2017-01-04 卓达新材料科技集团威海股份有限公司 A kind of hot-forming slag building waste sheet material
CN106277971A (en) * 2016-08-10 2017-01-04 卓达新材料科技集团威海股份有限公司 A kind of hot-forming alkaline residue building waste sheet material
CN107244942A (en) * 2017-07-17 2017-10-13 吴蕴仪 A kind of environmental protection composite board core of high intensity and preparation method thereof
CN108275971A (en) * 2017-10-24 2018-07-13 上海老港废弃物处置有限公司 A kind of preparation method of waste material of buildings base heat-barrier material
CN109293328A (en) * 2018-09-19 2019-02-01 贵州师范大学 The production method of the steam pressurized lithium dreg concrete building block of light transmission
CN109400070A (en) * 2018-11-23 2019-03-01 广西科技大学 A kind of light microporous sound-absorbing concrete inner partition plate and preparation method thereof

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CN101830654A (en) * 2010-04-23 2010-09-15 同济大学 High-calcium fly ash geopolymer gelled material and preparation method thereof
CN102167546B (en) * 2010-12-13 2013-01-02 广东龙湖科技股份有限公司 Zeolite-like lightweight heat preservation and sound insulation board and production method thereof
CN102701656B (en) * 2012-06-21 2015-06-17 重庆大学 Metakaolin-based polymer foam concrete and preparation method thereof

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