CN101581131A - Non-autoclaved aerated concrete building block and manufacturing method - Google Patents

Non-autoclaved aerated concrete building block and manufacturing method Download PDF

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Publication number
CN101581131A
CN101581131A CNA2009101040490A CN200910104049A CN101581131A CN 101581131 A CN101581131 A CN 101581131A CN A2009101040490 A CNA2009101040490 A CN A2009101040490A CN 200910104049 A CN200910104049 A CN 200910104049A CN 101581131 A CN101581131 A CN 101581131A
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CN
China
Prior art keywords
powder
aerated concrete
building block
autoclaved aerated
concrete building
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Application number
CNA2009101040490A
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Chinese (zh)
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CN101581131B (en
Inventor
王瑞燕
岳涛
胡德勇
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Chongqing Jiaotong University
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Chongqing Jiaotong University
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Priority to CN2009101040490A priority Critical patent/CN101581131B/en
Publication of CN101581131A publication Critical patent/CN101581131A/en
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Publication of CN101581131B publication Critical patent/CN101581131B/en
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Classifications

    • 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
    • C04B28/14Compositions 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 calcium sulfate cements
    • C04B28/142Compositions 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 calcium sulfate cements containing synthetic or waste calcium sulfate cements
    • C04B28/144Compositions 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 calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
    • 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
    • C04B2111/00017Aspects relating to the protection of the environment
    • 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 non-autoclaved aerated concrete building block which contains portland cement, fly ash, mill calcium oxide powder, desulphurization plaster and foaming agent; the formulation is also added with trolamine, sodium sulfate, and naphthalene sulfonate formaldehyde condensate. The invention also discloses a manufacturing method for the non-autoclaved aerated concrete building block. The invention has the beneficial effects that the early-strength and water reduction combination of the trolamine, the sodium sulfate, and the naphthalene sulfonate formaldehyde condensate greatly increases the early strength development rate of the aerated concrete and brings benefits to the long-term strength development of the aerated concrete; the non-autoclaved aerated process fully utilizes the hydration heat evolution of the cement and dispelling heat evolution of the calcium oxide and carries out the normal pressure dampness-heat maintenance, obviously reduces the cost of the maintenance of equipment and the manufacture dissipation energy, and increases the manufacturing safety.

Description

A kind of non-autoclaved aerated concrete building block and manufacture method
Technical field
The present invention relates to a kind of constructional materials, relate to a kind of non-autoclaved aerated concrete building block and manufacture method in particular.
Technical background
Gas concrete is to be primary raw material with siliceous material (sand, flyash and contain silicon tailings etc.) and calcareous material (lime, cement), admixture blowing agent (aluminium powder), stir through adding water, form hole by chemical reaction, the porous silicate artificial material of making by activitiess such as moulding by casting, precuring, cutting, steam press maintenances.Have advantages such as light weight, insulation, heat insulation, sound insulation, antidetonation, fire prevention, easy construction, be widely used as the materials for wall of building.China aerated concrete products overwhelming majority is building block, the filling and the space enclosing structure that are used for frame construction mostly, and gas concrete is not generally adopted in a large amount of steel buildings and farm building as yet, and the main cause that causes this phenomenon is that product quality and application technology still are left to be desired.
Gas concrete generally all needs could obtain intensity preferably through steam press maintenance, and equipment cost is higher, energy consumption is big, and security risk height in the manufacturing process.
Chinese invention patent (the patent No.: 03112888.2) disclose the production method that a kind of prescription is the non-steam-pressing aero-concrete of stone flour, cement, lime and aluminium powder; Chinese invention patent (the patent No.: 200810021256.5) disclose the non-steam-pressing aero-concrete production method that a kind of prescription is flyash, lime, cement, desulfurated plaster, aluminium powder.The production method of above-mentioned non-steam-pressing aero-concrete, though solved the problems such as maintenance cost height, big energy-consuming and production operation poor stability that exist in the process of traditional steam-pressing aero-concrete production, but because, do not have chemical admixtures such as early strength admixture and fluidizer in the prescription, there are problems such as intensity is lower, the production cycle is long in product.
Summary of the invention
The present invention proposes a kind of non-autoclaved aerated concrete building block, it contains Portland cement, flyash, fine grinding quicklime powder, desulfurated plaster and blowing agent, except aforementioned four kinds of compositions, also adding in the prescription has: triethanolamine, sodium sulphate, naphthalenesulfonate formaldehyde condensation compound.
The mass percent of above-mentioned various compositions is: Portland cement 25~45%, flyash 45~60%, fine grinding quicklime powder 4~12%, desulfurated plaster 1~5%, chemical admixture is by the powder quality percentage: triethanolamine 0.03~0.07%, sodium sulphate 0.6~1.2%, naphthalenesulfonate formaldehyde condensation compound 0.5~2%.
Wherein blowing agent adopts aluminium powder, is standard with the base substrate volume, and every cubic metre adds aluminium powder 0.4~0.8kg.
The invention allows for a kind of manufacture method of non-autoclaved aerated concrete building block, its step is as follows:
1) prepare powder, Admixture, blowing agent by following mass percent:
Powder: Portland cement 25~45%, flyash 45~60%, fine grinding quicklime powder 4~12%, desulfurated plaster 1~5%,
Admixture: triethanolamine 0.03~0.07%, sodium sulphate 0.6~1.2%, naphthalenesulfonate formaldehyde condensation compound 0.5~2%;
Blowing agent: aluminium powder, every cubic metre adds aluminium powder 0.4~0.8kg;
2) powder and Admixture are mixed after, add suitable quantity of water and stir and obtain mixed slurry A;
3) in mixed slurry A, add blowing agent, after fully stirring, be poured in the model groove and leave standstill foaming and obtain base substrate B;
4) cutting base substrate B is a reservation shape, and places under the normal pressure wet heat condition maintenance 5~15 days, obtains product.
Wherein, the described curing condition of step 4) is: the atmospheric pressure environment of 40~70 ℃ of temperature, relative humidity 70~90%.
Useful technique effect of the present invention is: and the morning of triethanolamine, sodium sulphate, naphthalenesulfonate formaldehyde condensation compound is strong-and the diminishing combination increases substantially concrete early strength development speed, and development brings benefit to late strength of concrete; Non-evaporating compression technology has reduced maintenance of equipment cost and power consumption, has improved the safety of producing.
The specific embodiment
Sodium sulphate-triethanolamine can quicken C in the cement as complex accelerator 3The aquation of A and the formation of entringite, and help Si-O in the flyash, Al-O bond fission, excite thereby help the early stage pozzolanic activity of flyash; Naphthalenesulfonate formaldehyde condensation compound can be regulated the slip denseness as fluidizer, improves gas concrete hole wall intensity to guarantee gas concrete and form good pore structure and to guarantee the intensity of gas concrete.The morning of triethanolamine, sodium sulphate, naphthalenesulfonate formaldehyde condensation compound is strong-and the diminishing combination increases substantially concrete early strength development speed; And late strength of concrete development brought benefit.
Embodiment: according to the various compositions of following percentage by weight weighing: Portland cement 33%, flyash 55%, fine grinding quicklime powder 7%, desulfurated plaster 3%, triethanolamine 0.05%, sodium sulphate 1.05%, naphthalenesulfonate formaldehyde condensation compound 1.9%.
After powder and Admixture mixed, add suitable quantity of water and stir and obtain mixed slurry A;
Add blowing agent among the mixed slurry A, after fully stirring, be poured in the model groove and the quiet bubble of stopping paying out obtains base substrate B, cutting base substrate B becomes reservation shape;
Gas concrete base substrate after the cutting enters in the maintenance tunnel cave of making that uses thermal insulation material, and controls curing temperature greater than 40 ℃, humidity 70~90%, and maintenance 5~15 days obtains the building block product.
By regulating each composition material ratio, Admixture consumption, blowing agent volume and ratio of water to material in the powder, through practice examining, the controllable density of air-entrained concrete building block is built in 500~800kg/m 3, 5d compressive strength reaches 3.1~7.6MPa, and 14d intensity reaches 3.7~10.7MPa.14d reaches " Autoclaved aerated concrete blocks " GB11968-2006 intensity rank A3.5~A10.0, dry density rank B05~B08 requirement.

Claims (5)

1, a kind of non-autoclaved aerated concrete building block, it contains Portland cement, flyash, fine grinding quicklime powder, desulfurated plaster and blowing agent, it is characterized in that: the Admixture that also adds in the prescription has: triethanolamine, sodium sulphate, naphthalenesulfonate formaldehyde condensation compound.
2, non-autoclaved aerated concrete building block according to claim 1, it is characterized in that: the mass percent of various compositions is in the powder formulation: Portland cement 25~45%, flyash 45~60%, fine grinding quicklime powder 4~12%, desulfurated plaster 1~5%.Admixture is by the powder quality percentage: triethanolamine 0.03~0.07%, sodium sulphate 0.6~1.2%, naphthalenesulfonate formaldehyde condensation compound 0.5~2%.
3, non-autoclaved aerated concrete building block according to claim 1 is characterized in that: blowing agent is an aluminium powder, is standard with the base substrate volume, and every cubic metre adds aluminium powder 0.4~0.8kg.
4, a kind of manufacture method of non-autoclaved aerated concrete building block is characterized in that: its step is as follows:
1) prepare powder, Admixture, blowing agent by following mass percent:
Powder: Portland cement 25~45%, flyash 45~60%, fine grinding quicklime powder 4~12%, desulfurated plaster 1~5%;
Admixture: triethanolamine 0.03~0.07%, sodium sulphate 0.6~1.2%, naphthalenesulfonate formaldehyde condensation compound 0.5~2%;
Blowing agent: aluminium powder, every cubic metre adds aluminium powder 0.4~0.8kg;
2) powder and Admixture are mixed after, add suitable quantity of water and stir and obtain mixed slurry A;
3) in mixed slurry A, add blowing agent, after fully stirring, be poured in the model groove and leave standstill foaming and obtain base substrate B;
4) cutting base substrate B is a reservation shape, and places under the normal pressure wet heat condition maintenance 5~15 days, obtains product.
5, the manufacture method of non-autoclaved aerated concrete building block according to claim 4 is characterized in that: the described curing condition of step 4) is: the atmospheric pressure environment of 40~70 ℃ of temperature, relative humidity 70~90%.
CN2009101040490A 2009-06-10 2009-06-10 Non-autoclaved aerated concrete building block and manufacturing method Expired - Fee Related CN101581131B (en)

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Application Number Priority Date Filing Date Title
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CN101581131B CN101581131B (en) 2011-06-08

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102140027A (en) * 2011-04-28 2011-08-03 长沙理工大学 Novel calcination-free desulfurized gypsum brick
CN102690094A (en) * 2012-05-17 2012-09-26 同济大学 Energy-saving and waste-utilizing concrete block or board and production method thereof
CN103011660A (en) * 2012-12-21 2013-04-03 江西迪特科技有限公司 Method for preparing concrete water reducing agent, method for preparing concrete early strength agent through water reducing agent and construction method for concrete early strength agent
CN103449776A (en) * 2013-08-20 2013-12-18 杨林江 Non-autoclaved aerated concrete block manufactured from building slurry and manufacturing method thereof
CN103664063A (en) * 2012-08-30 2014-03-26 贵州中建建筑科研设计院有限公司 Method and device for preparing ceramsite aerated concrete block
CN104891882A (en) * 2015-05-18 2015-09-09 潞城市鑫天晟建材有限公司 An autoclaving-free building block and a preparing method thereof
CN105645904A (en) * 2016-03-15 2016-06-08 东南大学 Non-autoclaved aerated concrete prepared by utilizing lithium slag and nickel slag and preparation method of non-autoclaved aerated concrete
CN106187280A (en) * 2016-07-12 2016-12-07 绍兴职业技术学院 A kind of steaming-free air-adding brick of high anti-folding and preparation method thereof
CN107140923A (en) * 2017-07-12 2017-09-08 合肥梵腾环保科技有限公司 A kind of environment-friendly type foam concrete block and preparation method thereof
CN110105034A (en) * 2019-04-12 2019-08-09 广东中旗新材料股份有限公司 A kind of natural curing air-entrained concrete building block production technology

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1064855A (en) * 1992-02-01 1992-09-30 山西省第一建筑工程公司科研试验所 Clinker-free cement and manufacture method thereof
US6153005A (en) * 1999-04-16 2000-11-28 Charles D. Welker Foamed concrete composition and process
CN1302777A (en) * 2001-02-03 2001-07-11 杜世永 Technology for quickly producing building blocks or bricks with powdered coal ash without steaming and calcine
CN101328041A (en) * 2008-07-23 2008-12-24 朱福华 High performance aerated concrete and production method thereof
CN101439955B (en) * 2008-10-15 2012-08-15 中博建设集团有限公司 Preparation of 06 grade gypsum based autoclave-free aerated concrete building blocks

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102140027A (en) * 2011-04-28 2011-08-03 长沙理工大学 Novel calcination-free desulfurized gypsum brick
CN102690094A (en) * 2012-05-17 2012-09-26 同济大学 Energy-saving and waste-utilizing concrete block or board and production method thereof
CN103664063B (en) * 2012-08-30 2017-03-22 贵州中建建筑科研设计院有限公司 Method and device for preparing ceramsite aerated concrete block
CN103664063A (en) * 2012-08-30 2014-03-26 贵州中建建筑科研设计院有限公司 Method and device for preparing ceramsite aerated concrete block
CN103011660A (en) * 2012-12-21 2013-04-03 江西迪特科技有限公司 Method for preparing concrete water reducing agent, method for preparing concrete early strength agent through water reducing agent and construction method for concrete early strength agent
CN103449776A (en) * 2013-08-20 2013-12-18 杨林江 Non-autoclaved aerated concrete block manufactured from building slurry and manufacturing method thereof
CN103449776B (en) * 2013-08-20 2015-10-21 杨林江 A kind of construction slurry steaming-free air-adding concrete segment and manufacture method thereof
CN104891882A (en) * 2015-05-18 2015-09-09 潞城市鑫天晟建材有限公司 An autoclaving-free building block and a preparing method thereof
CN104891882B (en) * 2015-05-18 2017-06-09 潞城市鑫天晟建材有限公司 A kind of non-evaporating building block and preparation method thereof
CN105645904A (en) * 2016-03-15 2016-06-08 东南大学 Non-autoclaved aerated concrete prepared by utilizing lithium slag and nickel slag and preparation method of non-autoclaved aerated concrete
CN106187280A (en) * 2016-07-12 2016-12-07 绍兴职业技术学院 A kind of steaming-free air-adding brick of high anti-folding and preparation method thereof
CN107140923A (en) * 2017-07-12 2017-09-08 合肥梵腾环保科技有限公司 A kind of environment-friendly type foam concrete block and preparation method thereof
CN110105034A (en) * 2019-04-12 2019-08-09 广东中旗新材料股份有限公司 A kind of natural curing air-entrained concrete building block production technology
CN110105034B (en) * 2019-04-12 2021-08-31 广东中旗新材料股份有限公司 Natural curing aerated concrete block production process

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