CN101696586B - Natural volcanic ash autoclaved aerated concrete block and preparation method thereof - Google Patents
Natural volcanic ash autoclaved aerated concrete block and preparation method thereof Download PDFInfo
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- CN101696586B CN101696586B CN 200910117515 CN200910117515A CN101696586B CN 101696586 B CN101696586 B CN 101696586B CN 200910117515 CN200910117515 CN 200910117515 CN 200910117515 A CN200910117515 A CN 200910117515A CN 101696586 B CN101696586 B CN 101696586B
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- volcanic ash
- natural volcanic
- aerated concrete
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
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- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
Abstract
The invention relates to a natural volcanic ash autoclaved aerated concrete block. The block consists of natural volcanic ash accounting for 50 to 60 percent of total weight, cement accounting for 4 to 6 percent of total weight, quick lime accounting for 15 to 20 percent of total weight, building gypsum accounting for 0 to 2.0 percent of total weight, aluminum powder paste accounting for 0.03 to 0.04 percent of total weight and water accounting for 20to 25 percent of total weight. Meanwhile, the invention also discloses a method for preparing the block. The block has good strength, low density, low thermal conductivity coefficient, low shrinkage and other performances. The method can fully utilize local resources in regions which are abundant in natural volcanic ash but short of sand and fly ash so as to solve the need of local building insulation markets.
Description
Technical field
The present invention relates to a kind of Autoclaved aerated concrete blocks and preparation method thereof, relate in particular to a kind of natural volcanic ash autoclaved aerated concrete block and preparation method thereof.
Background technology
Along with the increasing of national building energy conservation dynamics, the application of External Thermal Insulation Technology for External is also along with increase, and wherein important ingredient is materials for wall.Autoclaved aerated concrete blocks as materials for wall, at present current main raw material(s) is to use sand (being commonly referred to as sand aerated concrete block) or flyash (being commonly referred to as coal ash autoclaved air-entrained concrete building block) to make, but the area at these two kinds of resource relative shortages, just can only solve by long-distance transport, the breakage rate of the Autoclaved aerated concrete blocks that is caused by transportation is very large, thereby cause the use cost of building block to raise, the use of this novel wall material of remote-effects.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of natural volcanic ash autoclaved aerated concrete block that utilizes local pozzolan resource, is applicable to interior outer-wall building, function admirable.
Another technical problem to be solved by this invention is to provide a kind of preparation method of above-mentioned natural volcanic ash autoclaved aerated concrete block.
For addressing the above problem, a kind of natural volcanic ash autoclaved aerated concrete block of the present invention is characterized in that: this building block is comprised of 50～60% natural volcanic ash that account for gross weight, 4～6% cement, 15～20% quicklimes, 0～2.0% plaster of Paris, 0.03～0.04% aluminium powder cream and 20～25% water.
Silica (the SiO of described natural volcanic ash
2) content is 74～77%, alundum (Al2O3) (Al
2O
3) content is 11～15%.
Described cement is the Portland cement of 42.5 grades of strength grades.
A kind of preparation method of natural volcanic ash autoclaved aerated concrete block as above, it comprises the following steps:
(1) natural volcanic ash is carried out fragmentation and grinding to 150～200 orders;
(2) by each component of proportioning weighing;
(3) natural volcanic ash, cement, quicklime, plaster of Paris are mixed rear grinding to 200 order, obtain mixed material;
(4) add aluminium powder cream after mixed material and water are mixed, obtain slip;
(5) with slip casting to aero-concrete mould, obtain Aerated concrete blank after thermal curing;
(6) Aerated concrete blank is protected through resting, after cutting, steam press maintenance and get final product.
The present invention compared with prior art has the following advantages:
1, because primary raw material of the present invention is natural volcanic ash, therefore sufficient for the natural volcanic ash resource, and the area of sand and fly ash scarcity can take full advantage of local resources, solves the needs in local building heat preservation market.
2, because natural volcanic ash has stronger hydration activity, this activity easily ejects under thermal and hydric environment, therefore make product of the present invention under the prerequisite of equivalent technology index, use the amount of cement to be reduced to 4～6% from 10%, be less than like product, for the consumption of resource, certain saving effect arranged.
3, because natural volcanic ash itself has the effect that reduces the heat of hydration, when adopting the finished product of the inventive method making, its dry contraction is less than similar fly-ash steaming and adds concrete block, therefore, build by laying bricks or stones for building, the functional performance of this product more excellent (referring to table 1, test basis is GB/T11972-1997 " Test methods for dry shrinkage of aerated concrete ").
Table 1: the contrast of the drying shrinkage value of all kinds of air-entrained concrete building blocks
| The air-entrained concrete building block classification | Flyash is main material | Sand is main material | The present invention |
| Drying shrinkage value (mm/m) | ≤0.50 | ≤0.50 | ≤0.30 |
4, through test, the present invention has good intensity, density is little, coefficient of thermal conductivity is little, shrink the performances such as little, can be widely used in various construction walls and build by laying bricks or stones.Its basic mechanical design feature index is as shown in table 2 below:
Table 2: the performance test results of the present invention
The specific embodiment
Embodiment 1 preparation gross mass is that natural volcanic ash autoclaved aerated concrete block need natural volcanic ash 500kg, cement 40kg, quicklime 200kg, plaster of Paris 9.6kg, aluminium powder cream 0.4kg, the water supply volume of 1000kg is 250kg.
Wherein: natural volcanic ash is produced natural volcanic ash by acthar county, Gansu Province when area, Kingsoft, and its Main Ingredients and Appearance is: SiO
274～77%:Al
2O
311～15%; 42.5 grades of Portland cements that the Qilian mountains, cement selection Yongdeng Cement Co., Ltd is produced, its performance indications meet the regulation of GB175-1999 " portland cement, Portland cement "; Quicklime is the quicklime for building that acthar county, Gansu Province produces when area, Kingsoft, and its performance satisfies industry standard " silicate product quicklime " requirement (JC/T621-1996); Plaster of Paris is the Jingyuan, Gansu power plant desulfurization gypsum, and its performance satisfies national standard " plaster of Paris " requirement (GB/T9776-2008); Aluminium powder cream is that Liancheng, Lanzhou Chinalco produces, and its performance satisfies industry standard " Aluminum Powder Applied in Lightweight Concrete cream " requirement (JC/T407-2000); The water ordinary tap water is without specific (special) requirements.
The preparation method of this natural volcanic ash autoclaved aerated concrete block:
(1) natural volcanic ash carry out grinding to 150～200 orders in the MB1557 type ball mill that Hubei cement machine factory produces.
(2) by each component of proportioning weighing.
(3) natural volcanic ash, cement, quicklime, plaster of Paris are added successively mix in ball mill and grinding to 200 order, obtain mixed material, simultaneously this mixed material is transferred in corresponding material warehouse.
(4) mixed material being joined volume that Wuhan Construction Material Industry Design Institute produces is in the cast mixer of 4.2 cubic metres, and adds water and stir with the speed of 15～30r/min, adds aluminium powder cream to mixing of materials after evenly, obtains slip.
(5) in the aero-concrete mould of the 4.2m * 1.2m that slip casting is produced to Tianyuan Engineering Machinery Co. Ltd., Changzhou City * 0.6m, carry out thermal curing (40～60 ℃ of temperature, relative humidity 70～90%), material in slip is reacted, generate bubble, namely obtain Aerated concrete blank after the slip integral foam.
(6) protect rest under the Aerated concrete blank nature from 1 hour after, the cutting machine that base substrate is transported to Tianyuan Engineering Machinery Co. Ltd., Changzhou City's production cuts, and the specification of cutting can be made according to the requirement of standard GB/T 11968-2006 " Autoclaved aerated concrete blocks "; Then the building block after cutting being completed be transported to carry out in the still kettle of Φ 2.68 * 32m that Changzhou Boiler Co., Ltd produces steam press maintenance (constant voltage pressure 1.25Mpa, pressure rising time 2.5h, constant voltage time 7h, step-down time 2.5h); After steam press maintenance is completed, building block is transported from still and get final product.
Embodiment 2 preparation gross masses are that natural volcanic ash autoclaved aerated concrete block need natural volcanic ash 550kg, cement 50kg, quicklime 160kg, plaster of Paris 19.7kg, aluminium powder cream 0.3kg, the water supply volume of 1000kg is 220kg.
Wherein raw material and preparation method are with embodiment 1.
Embodiment 3 preparation gross masses are that natural volcanic ash autoclaved aerated concrete block need natural volcanic ash 600kg, cement 45kg, quicklime 150kg, plaster of Paris 4.7kg, aluminium powder cream 0.3kg, the water supply volume of 1000kg is 200kg.
Wherein raw material and preparation method are with embodiment 1.
Embodiment 4 preparation gross masses are that natural volcanic ash autoclaved aerated concrete block need natural volcanic ash 580kg, cement 60kg, quicklime 149.7kg, plaster of Paris 0kg, aluminium powder cream 0.3kg, the water supply volume of 1000kg is 210kg.
Wherein raw material and preparation method are with embodiment 1.
Embodiment 5 preparation gross masses are that natural volcanic ash autoclaved aerated concrete block need natural volcanic ash 560kg, cement 55kg, quicklime 144.6kg, plaster of Paris 20kg, aluminium powder cream 0.4kg, the water supply volume of 1000kg is 220kg.
Wherein raw material and preparation method are with embodiment 1.
Claims (3)
1. natural volcanic ash autoclaved aerated concrete block is characterized in that: the preparation gross mass is that to need natural volcanic ash 500kg, cement 40kg, quicklime 200kg, plaster of Paris 9.6kg, aluminium powder cream 0.4kg, water supply volume be 250kg to the natural volcanic ash autoclaved aerated concrete block of 1000kg;
The preparation method of this natural volcanic ash autoclaved aerated concrete block:
(1) natural volcanic ash carry out grinding to 150 in ball mill～200 orders;
(2) by each component of proportioning weighing;
(3) natural volcanic ash, cement, quicklime, plaster of Paris are added successively mix in ball mill and grinding to 200 order, obtain mixed material, this mixed material is transferred in corresponding material warehouse simultaneously;
(4) mixed material being joined volume is in the cast mixer of 4.2 cubic metres, and adds water and stir with the speed of 15～30r/min, adds aluminium powder cream to mixing of materials after evenly, obtains slip;
(5) with slip casting to the aero-concrete mould of 4.2m * 1.2m * 0.6m, carry out thermal curing under the condition of 40～60 ℃ of temperature, relative humidity 70～90%, material in slip is reacted, generate bubble, namely obtain Aerated concrete blank after the slip integral foam;
(6) protect rest under the Aerated concrete blank nature from 1 hour after, base substrate is transported to cutting machine cutting; Then the building block after cutting being completed is transported in the still kettle of Φ 2.68 * 32m, at constant voltage pressure 1.25Mpa, pressure rising time 2.5h, constant voltage time 7h carries out steam press maintenance under the condition of step-down time 2.5h; After steam press maintenance is completed, building block is transported from still and get final product.
2. a kind of natural volcanic ash autoclaved aerated concrete block as claimed in claim 1 is characterized in that: the dioxide-containing silica of described natural volcanic ash is 74～77%, alundum (Al2O3) content is 11～15%.
3. a kind of natural volcanic ash autoclaved aerated concrete block as claimed in claim 1, it is characterized in that: described cement is the Portland cement of 42.5 grades of strength grades.
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| CN 200910117515 CN101696586B (en) | 2009-10-15 | 2009-10-15 | Natural volcanic ash autoclaved aerated concrete block and preparation method thereof |
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| CN101696586B true CN101696586B (en) | 2013-06-05 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102002984B (en) * | 2010-11-15 | 2012-06-13 | 西藏大成科技发展有限责任公司 | Preparation method of heat-insulating and energy-saving board of ecological building from volcanic ash |
| CN102887725B (en) * | 2012-09-03 | 2014-07-02 | 蚌埠爱民汽车服务有限公司五河新型环保建材厂 | Air-added brick produced by utilizing waste building rubbish and method for processing air-added brick |
| CN102838335A (en) * | 2012-09-20 | 2012-12-26 | 重庆市华弘建筑规划勘测设计有限公司 | Method for producing aerated concrete by using sandstone in Zhengyang of Qianjiang River as main material |
| CN103396072B (en) * | 2013-08-08 | 2015-05-20 | 太原钢铁(集团)有限公司 | Autoclaved fly ash aerated concrete blank manufacturing method |
| CN103406982B (en) * | 2013-08-12 | 2015-05-20 | 太原钢铁(集团)有限公司 | Method for rapidly distinguishing air exhausting directions of aerated concrete blocks |
| CN103693928B (en) * | 2013-11-14 | 2015-07-22 | 河南兴安新型建筑材料有限公司 | Autoclaved aerated concrete plate produced by using Yellow River sand, and production method thereof |
| CN103664119B (en) * | 2013-11-15 | 2015-11-04 | 大连工业大学 | A kind of fire retardant energy-saving lagging material |
| CN105384461A (en) * | 2015-11-10 | 2016-03-09 | 当涂县科辉商贸有限公司 | Autoclaved aerated concrete building block with good fireproof coating suitability and manufacturing method thereof |
| CN107285722A (en) * | 2017-06-30 | 2017-10-24 | 铜陵丰泽建材科技有限公司 | A kind of preparation method for being difficult hollowing autoclave aerated concrete building block |
| CN109437724A (en) * | 2018-12-27 | 2019-03-08 | 广东新业混凝土有限公司 | A kind of enhanced flyash, trass concrete |
Citations (4)
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|---|---|---|---|---|
| CN1087071A (en) * | 1992-11-13 | 1994-05-25 | 蒋绍赋 | Building material of volcanic ash for large wall |
| CN1118340A (en) * | 1995-05-29 | 1996-03-13 | 邓昌五 | Strengthened lightweight aerated block and its manufacture |
| CN1465539A (en) * | 2002-06-27 | 2004-01-07 | 兴 李 | Air entraining free light wall building block made from pyrolutite resource products |
| KR20060090036A (en) * | 2005-02-04 | 2006-08-10 | 이성문 | How to make bricks and blocks healthy for human body and environment |
-
2009
- 2009-10-15 CN CN 200910117515 patent/CN101696586B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1087071A (en) * | 1992-11-13 | 1994-05-25 | 蒋绍赋 | Building material of volcanic ash for large wall |
| CN1118340A (en) * | 1995-05-29 | 1996-03-13 | 邓昌五 | Strengthened lightweight aerated block and its manufacture |
| CN1465539A (en) * | 2002-06-27 | 2004-01-07 | 兴 李 | Air entraining free light wall building block made from pyrolutite resource products |
| KR20060090036A (en) * | 2005-02-04 | 2006-08-10 | 이성문 | How to make bricks and blocks healthy for human body and environment |
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| CN101696586A (en) | 2010-04-21 |
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Address after: 730020 1188 Jiatan Road, Chengguan District, Lanzhou City, Gansu Province Patentee after: Gansu Academy of Civil Engineering Sciences Co., Ltd. Address before: 730020 1188 Jiatan Road, Chengguan District, Lanzhou City, Gansu Province Patentee before: Gansu Civil Engineering Research Institute |
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