CN1261600A - Non-steam cured foamed concrete plate - Google Patents
Non-steam cured foamed concrete plate Download PDFInfo
- Publication number
- CN1261600A CN1261600A CN99114637A CN99114637A CN1261600A CN 1261600 A CN1261600 A CN 1261600A CN 99114637 A CN99114637 A CN 99114637A CN 99114637 A CN99114637 A CN 99114637A CN 1261600 A CN1261600 A CN 1261600A
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- Prior art keywords
- cement
- foamed concrete
- concrete plate
- water
- steam
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Classifications
-
- 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
- C04B28/06—Aluminous cements
- C04B28/065—Calcium aluminosulfate cements, e.g. cements hydrating into ettringite
-
- 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
- C04B2111/10—Compositions or ingredients thereof characterised by the absence or the very low content of a specific material
- C04B2111/1025—Alkali-free or very low alkali-content materials
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
Non-steam cured foamed concrete plate contains low-alkali cement 40-60 portions, flyash 25-40 portions, fiber 0.4-0.7 portions and foaming agent 1.8-3 portions and the foaming agent consists of hydrogen peroxide, oxalic acid and water. It features its short demolding period, natural cure without using steam, low production cost, high strength and high sound isolating and heat insulating effect.
Description
The invention belongs to porous mortar, concrete product technical field, be specifically related to a kind of non-steam cured foamed concrete plate.
Along with improving constantly of living standards of the people, the dwelling house class requires more and more higher, reconstruction of the old city town, new city construction, high-rise, high-rise building is old go out not poor, in order to alleviate the load holding capacity in house, reduce the comprehensive cost in house, save the refrigeration insulation energy, economize the land resource, nation-building portion, all corresponding dispatch of each place capital construction commission are forbidden the production and the use of clay brick, restriction shale brick and shale hollow brick, because this class brick had both been wasted earth, it is poor to weigh again, be incubated, and the cost height.Simultaneously (1995) No. 4 literary compositions of Ministry of Finance's State Tax Administration's property tax word have sent about to the part comprehensive utilization of resources, product is exempted the notice of value added tax, regulation " ... utilize the brick, gas concrete, building block, haydite, wallboard etc. of the production of coal gangue, sand, coal slime, flyash (slag) etc. and other waste residues, exempt preferential policies such as value added tax without exception " wherein.Weight and the save energy angle of foamed concrete from alleviating concrete member received very big concern.Representative is to adopt aerating to steam light weight concrete (ALC) sheet material that the oxygen method is made, its usually adopts be foaming or in advance foam forms obtain grout, after cast, the demoulding, under hydrothermal solution and pressure condition, in a hot pressing container, make through the maintenance solidifying product.The shortcoming of the existence of this class sheet material is: 1. technology is numerous and diverse, finishes the length that expends time in from the batch mixing to the maintenance, and it is many to expend the energy.2. required aerating steaming and cultivating equipment one steam-cured still, investment is big, the technical requirements height, and under certain situation, generally can only produce thorough, can not adapt to the needs of producing various heterotype profiled sheets, very flexible.3. the sheet material bubble hole of being produced is the string hole, and heat-insulation and heat-preservation and soundproof effect are bad.4. be difficult to the intensity that reaches enough simultaneously satisfying light-weight.Not enough for overcoming aerating steam-curing concrete ground, Ningbo City north weary northern southern New Building Materials Manufacturing Co., Ltd has developed a kind of light cellular partition board, it carries out emulsification modification processing with industrial glue, magnesium chloride saltwater brine and makes gelifying agent with flyash, magnesium oxide, Portland cement core making filler; Make puffing foaming liquid with rosin, industrial gelatine, sodium hydroxide, puffing foaming agent water, above-mentioned three kinds of compositions are dropped into by metering make the foaming mashed prod again, lay aggregate on cast limit, mould top then, the final curing demoulding forms.This wallboard makes wallboard reach the light-weight effect owing to adopted whipping agent and some relevant auxiliary agents, does not need aerating steam-cured.Though this sheet material has overcome the some shortcomings of ALC, it has adopted magnesium chloride saltwater brine and magnesium oxide is raw material, goods physicals instability, and anti-halogen phenomenon can appear in goods when climate is moist, influences finished product quality and outward appearance.
Based on above-mentioned many deficiencies of existing foamed concrete, it is short that the object of the invention provides a kind of demould time, and natural curing does not need the aerating steam curing conservation, low cost of manufacture, intensity height, steady quality, sound insulation, well-insulated non-steam cured foamed concrete.
For achieving the above object, non-steam cured foamed concrete of the present invention has been selected following component (weight part) for use:
Low alkali cement 40-60 part, flyash 25-40 part, fiber 0.4-0.7 part, whipping agent 0.4-0.7 part.
In addition, be 50-60 with the water cement ratio: 100 parts add water.
Wherein, the concrete composition of whipping agent is (weight %): Liquor Hydrogen Peroxide (25 ° of degree Beaume) 94-99%, oxalic acid (concentration 99%) 1-6%.
Cement is selected quick hardening sulphoaluminate cement for use, is that initial set is no earlier than 20 minutes to the requirement of this type of cement, and final set was earlier than 3 hours, and intensity should be greater than more than 90% of corresponding label in 3 days.
For intensity and the homogeneity that improves goods, also can add river sand 1-25 part in this concrete, water reducer 1.8-3 part.
For selecting for use of each composition, consideration of the present invention is:
1. cement:
Cement, promptly inorganic coagulation material is the intensity main source of this product, and is short for reaching requirement demould time of the present invention, the purpose that intensity is high, the cement palpus early strength height that requirement is selected for use, it is fast to condense.Therefore, standard according to ZBD11005-87, the present invention has selected the low alkali cement of quick hardening sulphoaluminate cement or other kind especially for use, wherein quick hardening sulphoaluminate cement is based on anhydrous calcium sulphoaluminate and Dicalcium Phosphate (Feed Grade), this two classes cement all has initial set and is no earlier than 25 minutes, final set was earlier than 3 hours, and intensity was greater than the performance of corresponding label more than 90% in 3 days.Its setting and harden process is can be just in time consistent with the distinctive whipping agent of the present invention process of getting angry, and it is little to produce unit weight, the product that intensity is high.
2. whipping agent:
In non-steam cured foamed concrete plate, whipping agent is another important substance, because the non-steam-cured characteristic that this sheet material requires, it is big to require whipping agent to have gas production rate, and expansion rate is suitable, the feature that consumption is little.Because slip is transferred out gas at chemical reaction after injecting mould, make mass expanded, gelling material (being cement) begins setting and harden simultaneously, if foaming is fast, setting and harden is slow, the inner pore that forms of slip is spoilt sunken because of deadweight and is overflowed; Slow if get angry, fast solidifying, the foam rate of expansion is low or crackle occurs or expand not.Therefore, only get angry process consistent with the setting and harden process coordinating could output ideal product.To STUDY ON FOAMING AGENT, international and domestic many explorations, for example the electricity consumption acetylene gas that gets made of stones all once done; Make hydrogen etc. with iron silicide and some active metals, but because there are many unfavorable factors such as cost, gas production rate and technology controlling and process in these gas methods, the difficult people's will to the greatest extent of effect in mass production of products.The present invention has adopted Liquor Hydrogen Peroxide and oxalic acid to form whipping agent, the mechanism that it and aluminosulfate cement are starched is as follows: Liquor Hydrogen Peroxide in the whipping agent and the anhydrous slufuric acid aluminium in the cement can be emitted a large amount of oxygen in the chemical combination process, grout is played foaming effect.Calcareous reaction in oxalic acid and the cement generates caoxalate.After cement is met water, anhydrous calciumsulphate again with cement in another component calcium sulfate reaction form ettringite, it is very hard and stable, thereby the product strength height.This whipping agent can form the system that makes solid-liquid-gas three things coexistence in cement slurry.As not adding this whipping agent, this system will be unstable, and gas will overflow, and solid will precipitate, water will be secreted, thereby can not form the homodisperse state of porous, and add this whipping agent, then can reduce the surface strength of flyash, cement foamed slip, improve guarantor's gas ability of slip, solid particulate is adsorbed on around the bubble, avoids solid particles sediment, form solid-liquid-gas three-phase porous dispersed system effectively.In addition, what of whipping agent incorporation, to slip pore size and homogeneity, and the physical and mechanical property of finished product, sound-absorption and heat-insulation performance all have a significant effect.The present invention has selected best incorporation.
3. flyash:
Particle in the flyash is in the majority with the spherical glass body, and specific surface area is big, and its mineral composition mainly is vitreum, quartz and a small amount of unburned carbon granules.Be used in and make walling reach the light purpose of unit weight in the present technique,, reduce production costs simultaneously as a kind of filler.
4. fiber
Adopt the modified PVA fiber, to improve tensile strength, the epistasis modulus of walling.
5. river sand:
This component for selecting component, when selecting it for use, will be increased and decreased on consumption with it by flyash in the present invention mutually.Adding it is for increasing the intensity of walling, but add-on too much can cause walling unit weight to increase, and reaches not light-weight purpose.Therefore the present invention is limited to its consumption in per 100 parts of ash material and contains in the scope of river sand 1-25 part.
6. water:
Water is the medium as hydrated cementitious and moulding, its role is to regulate the concentration of slip and the performance of goods, high water-cement ratio slip easy-formation, and easily foaming, but intensity is low; The low water-cement ratio slip flows living poor, and the gas that whipping agent is emitted is easily resistance in expansion process, and goods inside is prone to crackle or unit weight is big, and therefore, mixing of water must be an amount of.The present invention has selected preferable water cement ratio 50-60 for use: 100 parts.
7. dispersion agent, toughener or water reducer:
These several auxiliary agents are selection component of the present invention, are used to improve the intensity and the homogeneity of goods, add as required.
The present invention is identical with the technology of making conventional walling aspect production technique, at first be to add water by the water cement ratio example to go in the stirrer, add fiber again, ceaselessly open anti-ahead running, fiber is fully relaxed, add flyash, cement, river sand etc. again, add whipping agent at last, mix discharging cast molding about 1 minute; Second step was the demoulding, and the 3rd step was natural curing.Whole process is all finished at normal temperatures and pressures.Process aspect should note following some:
1. envrionment temperature and water
Optimum envrionment temperature should be more than 15 ℃, if temperature is too low, foamed time can prolong, and the demoulding is slow, so must adjust whipping agent and prescription or improve water temperature or the indoor heating in workshop when temperature is lower than 15 ℃.
2. go into the mould time
Should inject mould immediately after slip is mixed, shorten " ineffective time " as far as possible.After whipping agent adding in a single day, chemical reaction takes place immediately, begin to emit gas, to go into the mould time if prolonged, the inner established pore of slip can lose in going into mold process, will waste a part of gas, does not reach foaming effect.
Because the present invention has done above-mentioned sufficient consideration to the selection of each component and consumption, so the present invention is had the following advantages:
1. the present invention is owing to selected for use the low alkali cement of quick hardening sulphoaluminate cement or other kind to be equipped with special whipping agent, make the foaming process and the setting and harden process of cement reach harmonious, product is compared with the other products with volume, lighter unit weight is promptly arranged, more excellent intensity is arranged again.
2. because rationally selecting for use of component makes the demould time of product short, got final product the demoulding in general three hours, do not take mould for a long time, enhance productivity greatly.
3. product only needs natural curing, and overcome aerating and steamed the many power consumptions source that still, the consumption manpower, investment is big, and the shape of product of production is subjected to many shortcomings such as steam-cured still restriction, realizes energy-conservation, joint power, saves the diversified advantage of assets product.
4. manufacturing process is simple, and required power has only grey sand agitator and mould, and equipment is few.
Below be embodiments of the invention: (kilogram)
| Aluminosulfate cement | Low alkali cement | Flyash | Sand | Fiber | Whipping agent | Water reducer | Dispersion agent | Toughener | Water | |
| ??1 | ????43 | ?????34 | ???19.5 | ???0.4 | ????2.1 | ????1 | ???50 | |||
| ??2 | ????45 | ?????28 | ???21.6 | ???0.4 | ????2 | ????3 | ???50 | |||
| ??3 | ????49 | ?????32 | ???16.4 | ???0.4 | ????2.2 | ???50 | ||||
| ??4 | ????52 | ?????33 | ???12.2 | ???0.5 | ????2.3 | ???60 | ||||
| ??5 | ????54 | ?????34 | ???8 | ???0.6 | ????2.4 | ????1 | ???60 | |||
| ??6 | ????56 | ?????35 | ???3.8 | ???0.7 | ????2.5 | ????2 | ???60 | |||
| ??7 | ????56.8 | ?????40 | ???0.7 | ????2.5 | ???60 | |||||
| ??8 | ????60 | ?????34.6 | ???0.7 | ????2.7 | ????2 | ???60 | ||||
| ??9 | ????60 | ?????33.5 | ???1 | ???0.7 | ????2.8 | ????2 | ???60 | |||
| ??10 | ????40 | ?????32.5 | ???25 | ???0.7 | ????1.8 | ???60 | ||||
| ??11 | ????57 | ?????25 | ???14.3 | ???0.7 | ???60 |
Consisting of of whipping agent wherein: (weight %)
Liquor Hydrogen Peroxide oxalic acid
99％???????????????????1％
97％???????????????????3％
96％???????????????????4％
94％???????????????????6％
Among the embodiment:
1. aluminosulfate cement is selected 525 cement in Jiajiang cement mill, Leshan, Sichuan for use.
2. low alkali cement is selected 525 cement in cement mill, Nanning for use.
3. flyash is pressed " electric power board " flyash of slope, Kowloon, GB1598-91 standard application Chongqing power plant.
4. river sand is to select for use by the standard and the method for inspection of building the JGJ52-92 of Ministry of worker standard-be regular concrete sand quality.
5. fiber selects for use Sichuan to tie up the close synthetic fibre product M-PVA of factory, measures through Suzhou cement products research institute, and its result is as follows: tensile strength 88MPa, epistasis modulus 20MPa extension limit 8.56%.
This product detects through Chongqing City's quality supervision of construction engineering inspection center, examining report number: NO980751, its conclusion is: institute's inspection project reaches the technical requirement of JC/T3029-1995 prescribed by standard, and is qualified.
The particular case that detects is as follows:
| Interventions Requested | Technical indicator | Assay | Conclusion |
| Area density, kg/m | ≯ 60 | 41.6 | Qualified |
| The bending resistance failing load, kg | ≮ plate deadweight 74.9 * 0.75 | 66.5 | Qualified |
| Resistance to impact shock | 30kg sand pocket drop 0.5m, swing is impacted three times, through check do not occur. | 30kg sand pocket drop 0.5m, swing is impacted three times, through check do not occur. | Qualified |
| The single-point hanging force | Be subjected to 800N single-point hanging force effect 24h, through check do not occur. | Be subjected to 800N single-point hanging force effect 24h, through check do not occur. | Qualified |
| Incendivity | Be non-combustible | Be non-combustible | Qualified |
| Drying shrinkage value mm/m | ≯ 0.8 | 0.6 | Qualified |
| Thermal conductivity, w/mk | 0.14 | 0.122 | Qualified |
Claims (3)
1. non-steam cured foamed concrete plate contains following component: (weight part)
Low alkali cement: 40-60 part
Flyash: 25-40 part
Fiber: 0.4-0.7 part
Whipping agent: 1.8-3 part
Wherein, whipping agent consists of (weight %): Liquor Hydrogen Peroxide (25 ° of degree Beaume) 94-99%, and oxalic acid (concentration 99%) 1-6%,
Other adds water, and the ratio of water and above-mentioned each component total amount is 50-60: 100 parts (weight part).
2. non-steam cured foamed concrete plate according to claim 1 is characterized in that it also can contain river sand (weight part): 1-25 part, water reducer, dispersion agent or toughener: 1-3 part.
3. non-steam cured foamed concrete plate according to claim 1 and 2 is characterized in that cement preferably selects quick hardening sulphoaluminate cement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB991146379A CN1155538C (en) | 1999-01-21 | 1999-01-21 | Non-steam cured foamed concrete plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB991146379A CN1155538C (en) | 1999-01-21 | 1999-01-21 | Non-steam cured foamed concrete plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1261600A true CN1261600A (en) | 2000-08-02 |
| CN1155538C CN1155538C (en) | 2004-06-30 |
Family
ID=5277694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB991146379A Expired - Fee Related CN1155538C (en) | 1999-01-21 | 1999-01-21 | Non-steam cured foamed concrete plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1155538C (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1307029C (en) * | 2003-09-30 | 2007-03-28 | 达辉（广东）轻质混凝土制品有限公司 | Method for manufacturing light conccrete product |
| WO2008034403A1 (en) * | 2006-09-21 | 2008-03-27 | Universität Dortmund | Air-curing expanded concrete composed of binder-containing mixtures |
| CN101941850A (en) * | 2010-08-11 | 2011-01-12 | 昆明理工大学 | Method for firing ceramsite by coal slime |
| CN101748852B (en) * | 2009-11-23 | 2011-11-16 | 赵顺年 | Exterior wall heat insulation board and preparation method thereof |
| CN102617181A (en) * | 2012-03-29 | 2012-08-01 | 重庆市旌弘建材有限公司 | Shale sintering foam building block and preparation method thereof |
| CN102765963A (en) * | 2012-08-06 | 2012-11-07 | 辽宁科技大学 | Fire-proof heat-insulating foamed cement material for external wall and production method thereof |
| CN102964103A (en) * | 2012-12-04 | 2013-03-13 | 青岛理工大学 | Foam cement containing desulfurized petroleum coke ash-residue admixture |
| CN103979839A (en) * | 2014-03-31 | 2014-08-13 | 滁州学院 | Heat insulation and light weight partition plate and making method thereof |
| CN105645893A (en) * | 2016-01-20 | 2016-06-08 | 卓达新材料科技集团有限公司 | Method for manufacturing light sound absorption cement base plate |
| CN106930473A (en) * | 2017-03-28 | 2017-07-07 | 佛山佳牧乐科技有限公司 | A kind of dismountable assembled house top board |
| CN108373313A (en) * | 2018-03-30 | 2018-08-07 | 王景硕 | A kind of preparation method of air entrained concrete |
-
1999
- 1999-01-21 CN CNB991146379A patent/CN1155538C/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1307029C (en) * | 2003-09-30 | 2007-03-28 | 达辉（广东）轻质混凝土制品有限公司 | Method for manufacturing light conccrete product |
| WO2008034403A1 (en) * | 2006-09-21 | 2008-03-27 | Universität Dortmund | Air-curing expanded concrete composed of binder-containing mixtures |
| US8361219B2 (en) | 2006-09-21 | 2013-01-29 | Universitaet Dortmund | Air-curing expanded concrete composed of binder-containing mixtures |
| CN101748852B (en) * | 2009-11-23 | 2011-11-16 | 赵顺年 | Exterior wall heat insulation board and preparation method thereof |
| CN101941850A (en) * | 2010-08-11 | 2011-01-12 | 昆明理工大学 | Method for firing ceramsite by coal slime |
| CN102617181A (en) * | 2012-03-29 | 2012-08-01 | 重庆市旌弘建材有限公司 | Shale sintering foam building block and preparation method thereof |
| CN102765963A (en) * | 2012-08-06 | 2012-11-07 | 辽宁科技大学 | Fire-proof heat-insulating foamed cement material for external wall and production method thereof |
| CN102765963B (en) * | 2012-08-06 | 2014-04-09 | 辽宁科技大学 | Fire-proof heat-insulating foamed cement material for external wall and production method thereof |
| CN102964103A (en) * | 2012-12-04 | 2013-03-13 | 青岛理工大学 | Foam cement containing desulfurized petroleum coke ash-residue admixture |
| CN103979839A (en) * | 2014-03-31 | 2014-08-13 | 滁州学院 | Heat insulation and light weight partition plate and making method thereof |
| CN103979839B (en) * | 2014-03-31 | 2016-01-20 | 滁州学院 | A kind of heat-insulating light partition plate and preparation method thereof |
| CN105645893A (en) * | 2016-01-20 | 2016-06-08 | 卓达新材料科技集团有限公司 | Method for manufacturing light sound absorption cement base plate |
| CN106930473A (en) * | 2017-03-28 | 2017-07-07 | 佛山佳牧乐科技有限公司 | A kind of dismountable assembled house top board |
| CN106930473B (en) * | 2017-03-28 | 2019-03-26 | 佛山佳牧乐科技有限公司 | A kind of dismountable assembled house top plate |
| CN108373313A (en) * | 2018-03-30 | 2018-08-07 | 王景硕 | A kind of preparation method of air entrained concrete |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1155538C (en) | 2004-06-30 |
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Owner name: GUIZHOU HUAJUN GROUP ENERGY SAVING & ENVIRONMENTA Free format text: FORMER OWNER: XU JUNYUAN Effective date: 20081114 |
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Effective date of registration: 20081114 Address after: Guizhou city of Tongren province Gongqing Road No. 37 Patentee after: Guizhou Huajun Group Energy-Saving Environmental Protection Materials Co.,Ltd. Address before: Banan District of Chongqing City antlers town three village Wang Gang Patentee before: Xu Junyuan |
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Granted publication date: 20040630 Termination date: 20130121 |