CN1266072C - Brick blended high content flyash and mfg. method thereof - Google Patents
Brick blended high content flyash and mfg. method thereof Download PDFInfo
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- CN1266072C CN1266072C CNB2004100061232A CN200410006123A CN1266072C CN 1266072 C CN1266072 C CN 1266072C CN B2004100061232 A CNB2004100061232 A CN B2004100061232A CN 200410006123 A CN200410006123 A CN 200410006123A CN 1266072 C CN1266072 C CN 1266072C
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- 239000010881 fly ash Substances 0.000 title claims abstract description 139
- 239000011449 brick Substances 0.000 title claims abstract description 108
- 238000000034 method Methods 0.000 title claims abstract description 29
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 121
- 239000000292 calcium oxide Substances 0.000 claims abstract description 64
- 235000012255 calcium oxide Nutrition 0.000 claims abstract description 61
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 claims abstract description 31
- 239000000203 mixture Substances 0.000 claims abstract description 28
- 239000012615 aggregate Substances 0.000 claims abstract description 3
- 238000002156 mixing Methods 0.000 claims description 47
- 150000001875 compounds Chemical class 0.000 claims description 39
- 239000007787 solid Substances 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 24
- 239000004576 sand Substances 0.000 claims description 23
- 238000012423 maintenance Methods 0.000 claims description 18
- 235000002918 Fraxinus excelsior Nutrition 0.000 claims description 17
- 239000002956 ash Substances 0.000 claims description 17
- 239000011464 hollow brick Substances 0.000 claims description 15
- 230000032683 aging Effects 0.000 claims description 14
- 238000001994 activation Methods 0.000 claims description 12
- 230000004913 activation Effects 0.000 claims description 12
- 238000010348 incorporation Methods 0.000 claims description 12
- 239000002893 slag Substances 0.000 claims description 11
- 239000010440 gypsum Substances 0.000 claims description 10
- 229910052602 gypsum Inorganic materials 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- 239000011470 perforated brick Substances 0.000 claims description 9
- 238000010025 steaming Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 8
- 238000003483 aging Methods 0.000 claims description 7
- 238000001125 extrusion Methods 0.000 claims description 6
- 239000006004 Quartz sand Substances 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 238000006467 substitution reaction Methods 0.000 claims description 4
- 239000012190 activator Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 abstract description 15
- 238000003763 carbonization Methods 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 3
- 229910052681 coesite Inorganic materials 0.000 abstract 2
- 229910052906 cristobalite Inorganic materials 0.000 abstract 2
- 239000000428 dust Substances 0.000 abstract 2
- 239000000377 silicon dioxide Substances 0.000 abstract 2
- 235000012239 silicon dioxide Nutrition 0.000 abstract 2
- 229910052682 stishovite Inorganic materials 0.000 abstract 2
- 229910052905 tridymite Inorganic materials 0.000 abstract 2
- 230000007613 environmental effect Effects 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 230000007774 longterm Effects 0.000 abstract 1
- 238000013461 design Methods 0.000 description 14
- 238000000748 compression moulding Methods 0.000 description 10
- 229910004298 SiO 2 Inorganic materials 0.000 description 9
- 238000005096 rolling process Methods 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 239000002994 raw material Substances 0.000 description 7
- 238000007710 freezing Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 5
- 240000006909 Tilia x europaea Species 0.000 description 5
- 235000011941 Tilia x europaea Nutrition 0.000 description 5
- 238000004364 calculation method Methods 0.000 description 5
- 239000004571 lime Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 238000005303 weighing Methods 0.000 description 4
- 239000010883 coal ash Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical class O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002223 garnet Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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
- C04B28/18—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 mixtures of the silica-lime type
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- 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)
- Press-Shaping Or Shaping Using Conveyers (AREA)
- Processing Of Solid Wastes (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The present invention discloses a brick with a great amount of doped fly ash and a manufacturing method thereof. The present invention has the technical scheme that the brick with a great amount of doped fly ash is prepared from fly ash, furnace dust, quicklime and aggregate; the present invention is characterized in that the ratio of effective CaO in quicklime to fly ash or effective SiO2 in furnace dust is 0.30 to 0.50:1. the present invention also discloses a manufacturing method of the brick with a great amount of doped fly ash, which not only comprises necessary steps in the normal forming technique for making fly ash bricks but also comprises: the ratio of the effective CaO to the effective SiO2 in the mixture proportion is adjusted and controlled at 0.30 to 0.50:1; after being aged and activated, the mixture is pressed into green bricks and cured at high temperature under high pressure. The strength of the product discharged from the kettle is higher than that of the existing fly ash brick, and the drying shrinkage value of the product is reduced by 40 to 50%; the brick with a great amount of doped fly ash has the advantages of favorable carbonization resistance, long-term stable durability, low cost, high construction efficiency, easy environmental protection, easy waste utilization, easy popularization and easy implementation, and can be coordinated with the existing building module.
Description
Technical field
The present invention relates to a kind of flyash brick and manufacture method thereof, specifically relate to a kind of high blending flyash brick and manufacture method thereof, belong to the novel environmental-friendly construction material field.
Background technology
In building material field, non-sintering powdered coal ash brick production technology has three kinds: non-evaporating flyash brick, steam-cured fly ash brick and autoclaved fly ash brick at present.Non-evaporating flyash brick is natural curing at normal temperatures, steam-cured fly ash brick is 90 ℃～100 ℃ following common steam maintenances, they are all because curing temperature is on the low side, no matter proportioning raw materials how, all can not generate the hydrated product of more perfect crystalline, thereby product strength is on the low side, the drying shrinkage value is big, is easy to produce shrinkage crack, a little less than the weathering resistance performance, weather resistance is bad, and product performance can not satisfy the building function requirement; Existing autoclaved fly ash brick is on traditional experiential basis, carry out proportion design according to theory of strength, its moulding process is comparatively backward, curing temperature is still on the low side, generally has only 169 ℃～174 ℃, 0.8～0.9MPa pressure, minority factory adopts 1.0MPa pressure, curing temperature is 179 ℃, the same hydrated product that can not generate the more perfect crystalline that helps product performance, thereby doping quantity of fly ash is carried not high, the drying shrinkage value is still bigger than normal, and weather resistance is not good enough, brings problems to construction quality.In addition, present domestic flyash brick has only a kind of product, promptly traditional common solid brick, and it is of a size of 240 * 115 * 53, and product is too single, do not match, and needs to cut brick in Application in Building, causes operating efficiency not high, and waste of material is very big.
Summary of the invention
Defectives such as, quality instability poor for product performance in the flyash brick that solves traditional method preparation, doping quantity of fly ash are not high, product specification size and building module are inharmonious, the purpose of this invention is to provide a kind of change traditional material fiting ratio method of design and maintaining process, and can coordinate with existing building module, the operating efficiency height, the manufacture method of the high blending flyash brick of quality and excellent property.
To achieve these goals, the present invention adopts following technical scheme:
A kind of manufacture method of high blending flyash brick, it comprises the steps necessary of flyash brick moulding process, its characteristics are: it also comprises adjusts effective CaO and SiO in the mix material proportioning
2Ratio range determine step in C/S=0.30～0.50; Its compound is sent in the mould after by proportioning mixing, stirring, ageing and activation treatment, through the step of hydraulic pressure or mechanical extrusion forming adobe; And the step of High Temperature High Pressure maintenance; Described compound is mixed by flyash or ashes, unslaked lime and aggregate basically, and the weight percent of its each component is: flyash or ashes are 40～70%, unslaked lime 10～25%, aggregate 20～35%; Wherein, described aggregate is sand or slag, and sand is thick medium sand; The particle diameter of slag is that 0.25～0.50mm accounts for 40%, 0.50～2.0mm and accounts for 60%; The square hole sieve surplus that described unslaked lime fineness is 0.08mm is less than 10%; Described High Temperature High Pressure maintenance step is: described adobe is sent in the autoclave, saturated-steam temperature in this autoclave is that 194 ℃～200 ℃, pressure are 1.3～1.5MPa, according to the steaming pressuring curing system of 1.5～2 hours heating-up times, constant temperature after 4～6 hours, cooling maintenance in 2 hours; Described high blending flyash brick comprises common solid brick, hollow brick, perforated brick or modulus brick; Wherein modulus brick is modulus solid brick, modulus hollow brick or modulus porous brick, and its specifications design is: main brick 190 * 190 * 90mm, join brick 190 * 140 * 90mm, 190 * 90 * 90mm, 190 * 240 * 90mm and 190 * 90 * 40mm, supporting each other use.
Effective CaO and SiO in the described mix material proportioning
2Ratio determine in the step of C/S=0.30～0.50 be:
1) the add-on X that sets flyash or ashes and unslaked lime add-on Y with the ratio that accounts for the compound gross weight, this ratio sum should gross weight 65～80% between; Set the percentage composition C of effective CaO in the unslaked lime simultaneously
1With effective SiO in flyash or the ashes
2Percentage composition S
1, wherein: C
1* Y=C; S
1* X=S calculates the following formula of above-mentioned numerical value substitution:
Calculate flyash or ashes incorporation X and unslaked lime incorporation Y, this X should be 40～70% of gross weight; This Y should be 10～25% of gross weight;
2) weight percent of X that is obtained by step 1) and Y is determined the incorporation of aggregate, and described aggregate is sand or slag, and its add-on should be 20～35% of above-mentioned compound gross weight.
Send into mould after described compound stirring, ageing and the activation treatment, step through hydraulic pressure or mechanical extrusion forming adobe is: with the ageing 3～4 hours that stirs in aging bunker of this compound, after the wheel roller activation treatment, its compound being sent in the corresponding mould, is the adobe of high blending flyash brick through hydraulic pressure or mechanical extrusion forming again.
Can also mix gypsum in the above-mentioned compound as activator, its volume is the 0-10% of described unslaked lime add-on; If effective SiO in used flyash or the ashes
2Content is lower than at 40% o'clock, can the admixture fine quartz sand to increase in the compound effectively SiO
2Content, the incorporation of fine quartz sand account for the 15-20% that flyash in this compound or ashes add total amount; The fineness of described unslaked lime is that the square hole sieve surplus of 0.08mm is less than 10%.
Described common hollow brick or modulus hollow brick are the non-load bearing tile of hole ratio 〉=30%; Above-mentioned perforated brick or modulus porous brick are the bearing perforated brick of hole ratio 〉=25%.
Maximum difference is on the manufacture method of described high blending flyash brick and existing flyash brick: proportioning raw materials is different, steams and presses temperature and pressure to significantly improve.Thereby the hydrated product that generates is completely different, and product performance are just different fully, and not only product quality and performances improve and improve, and curing time can shorten greatly.
Technical measures of the present invention are:
(1), flyash or ashes, unslaked lime, sand and gypsum etc. in the currently available products raw material are pressed traditional theory of strength design mixture proportion, change into according to the material chemical component design mixture proportion, and with the effective CaO of lime in this compound and effective SiO of flyash
2Ratio be controlled in C/S=0.30～0.50 scope.What it was different with conventional proportioning is that doping quantity of fly ash improves greatly, and flyash and lime will account for 65～80% of compound as main gelling material.
Material qualities such as described flyash or ashes, unslaked lime, sand and gypsum must meet country about the raw-material standard of silicate product.SiO when flyash
2Content is lower than at 40% o'clock, but the fine quartz sand of adding coal ash or ashes incorporation 15～20% is participated in combination reaction; Described unslaked lime requires to contain CaO＞65%, and its fineness should be controlled at 0.08mm square hole sieve surplus＜10%; When described aggregate is sand, for well, or make aggregate with slag with thick medium sand, its particle diameter is that 0.25～0.50mm accounts for 40%, 0.50～2.0mm accounts for 60%.
Mixing gypsum outward as activator, mainly is the early strength that is used to regulate brick, and its volume is 0～10% of a unslaked lime add-on.
(2), the maintaining process of the present invention's employing and the difference of conventional maintaining process are, the steam press maintenance temperature and pressure significantly improves, and adjust along with the variation of chemical ingredients, the hydrated product that makes it generate hydrated product and existing flyash ash brick is completely different, thereby the product performance that obtained are different fully with existing flyash brick, not only product quality and performances significantly improve and improve, and curing time can shorten greatly.
The steam press maintenance temperature that the manufacturing enterprise of existing autoclaved fly ash brick adopts is that 169 ℃～174 ℃, pressure are 0.8～0.9MPa, it is 179 ℃ that only a few manufacturing enterprise adopts temperature, pressure is 1.0MPa, under such temperature and pressure, and SiO in CaO and the flyash in the lime
2Fail abundant chemical combination, generating a large amount of hydrated products is CSH (B) gel of half hitch crystalline state, and degree of crystallinity is imperfect, thus the product long durability can be bad, the drying shrinkage value big, a little less than the weathering resistance performance.Be that 194 ℃～200 ℃, pressure are maintenance under the High Temperature High Pressure of 1.3～1.5MPa only in temperature, CaO and SiO in the material
2Fully chemical combination generates quantity C enough, that degree of crystallinity is higher
4S
5H
5Hold in the palm the water garnet class hydrated product of vigorous mullite class and some amount, make the high blending flyash brick improve intensity, reduce shrinkage value and possess good weathering resistance performance.
Technical measures of the present invention (one) and (two) complement each other, two technical measures of Yi Laiing each other, and both are indispensable.Just because of carrying out proportion design according to C/S=0.30～0.50, improved doping quantity of fly ash greatly, so must adopt the High Temperature High Pressure maintaining process, can guarantee that just the flyash brick product has superperformance.Iff improving doping quantity of fly ash, do not adopt the High Temperature High Pressure maintaining process, up to now, adopt other any technical measures, all will be difficult to guarantee the good and steady quality of product performance.Otherwise if do not carry out proportion design according to chemical ingredients, the High Temperature High Pressure maintaining process is only adopted in control C/S=0.30～0.50, can cause the waste of losing more than gain on product performance disappearance and technology, the equipment equally.
(3), at present domestic production factory only can produce a kind of product of the common solid brick of flyash, the production of high blending flyash modulus brick still belongs to blank at home.The invention provides the forming method of high blending flyash modulus brick, hollow brick and perforated brick compacting, the specification of this modulus brick is: main brick 190 * 190 * 90mm, join brick 190 * 140 * 90mm, 190 * 90 * 90mm, 190 * 240 * 90mm and 190 * 90 * 40mm, use complements one another.It is and can coordinates mutually with China's architectural design modulus with the difference of ordinary fly ash solid brick, in use do not cut brick, and raising operating efficiency, save sand-cement slurry, thereby promoting the flyash brick product develops to seriation, supportingization and modularization direction, enlarge the range of application of its flyash brick, improve competitive capacity and the using value of flyash brick, with the system that satisfies different building modules, different construction function request in market.
The present invention compared with prior art has the following advantages:
(1), high blending flyash brick intensity and degree of compactness improve greatly, 28 days average intensity of wherein common solid brick is 22～28MPa, hole ratio is that 28 days average intensity of bearing perforated brick of 25% is 15～20MPa, and hole ratio is that 28 days average intensity of non-load bearing tile of 31% is 8～10MPa.
(2), doping quantity of fly ash significantly increases, owing to adopt scientific and reasonable C/S ratio, adds the High Temperature High Pressure steam press maintenance, makes that effective constituent activates in the material, given full play to the potential gelling property, so doping quantity of fly ash can increase significantly.
(3), product performance are better than existing flyash brick, especially drying shrinkage value＜0.38mm/M, anti-freezing property loss of strength＜10%, monolithic dry mass loss＜0.3%, carbonization COEFFICIENT K c＞0.90 greatly; And existing flyash brick drying shrinkage value 0.65～0.75mm/M, anti-freezing property loss of strength≤20%, monolithic dry mass lose≤2%, carbonization COEFFICIENT K c 〉=0.80, so this product weathering resistance performance and long durability have obtained tangible improvement.
(4), adopt the modulus brick dimensions, coordinate mutually with China building module, improve operating efficiency greatly, saved sand-cement slurry, improve the utilization ratio of brick, thereby significantly improve the overall economic efficiency of building construction;
(5), adopt 194～200 ℃ of temperature, pressure 1.3～1.5MPa steaming pressuring curing process, can shorten curing time greatly, save the energy, the faster production turnover.
Embodiment
At first theoretical foundation of the present invention and technical scheme are carried out comparatively detailed introduction.
(1), carry out the mix material proportioning method of design according to C/S=0.30～0.50:
The present invention is according to the experiment of silicate product and theory, generates C
4S
5H
5Hold in the palm the goods of vigorous mullite class hydrated product, its intensity is higher, shrinkage value is lower, its anti-charing and weathering resistance performance are improved.Therefore must be according to C
4S
5H
5The hydrated product formation condition is prepared burden.According to test of many times research, according to China's flyash situation, effective CaO and effective SiO in the compound
2Ratio, under C/S=0.30～0.50 condition, generate C
4S
5H
5Quantity more, degree of crystallinity is more complete, this moment product performance comparatively good.
It is as follows to carry out the mix material proportioning method of design according to C/S=0.30～0.50:
Determine that at first flyash and lime are the material main ingredient, account for 65%～80% of compound; The content of CaO in the preparing quick lime (＞65%) is C
1, SiO in the flyash
2The content of (＞40%) is S
1, set up following calculation formula:
In the formula: the fly-ash-contained per-cent that accounts for the compound total amount of X-, %
Y-unslaked lime incorporation accounts for the per-cent of compound total amount, %
S
1SiO in the-flyash
2Content, %
C
1CaO content in the-unslaked lime, %
By this formula, calculate the optimum mix of flyash and unslaked lime in the compound.According to China's material quality requirement, calculate manufacturing enterprise raw material optimum mix such as table 1 in actual production:
High blending flyash brick raw material optimum mix table table 1
Manufacturing enterprise also can be according to every batch of chemical ingredients of advancing factory's raw material, and corresponding above table data adopt in the interpolation substitution calculation formula of the present invention, calculate the optimum proportion amount of flyash and unslaked lime respectively.
Except that flyash and unslaked lime, also be mixed with sand or slag is made aggregate in the compound, play skeleton function.The sand particle diameter with thick medium sand for well; The slag particle diameter with 0.25～0.5mm account for 40%, 0.5mm～2.0mm accounts for 60% for well, the total incorporation of aggregate accounts for 20～35% of compound, its fineness and volume can be regulated according to adobe early strength and drying shrinkage value size.
According to what and the present situation of adobe early strength of aggregate volume, whether decision adds gypsum in compound, generally be under the insufficient situation of adobe early strength, and gypsum is to mix in the compound as exciting agent, and its incorporation accounts for 0～10% of unslaked lime volume.
The said ratio compound is stirred, and ageing is 3～4 hours in aging bunker, again after the rolling activation treatment, by hydraulic pressure or machinery pressurization, the various high blending flyash adobes of compression moulding.
(2), the adobe of compression moulding high blending flyash common brick and modulus brick
With the mould of compound of the present invention according to prior art employing different size, compression moulding common standard brick or modulus brick.Can compression moulding be the common solid brick of high blending flyash, hollow brick and perforated brick; Also can compression moulding high blending flyash modulus solid brick, the high blending flyash modulus porous brick adobe of nonweight-bearing high blending flyash modulus hollow brick and load-bearing.Pass can be the hole, garden, also can be the elongated rectangular shape hole.Modulus brick except that with the supporting application of China's common standard brick, also can with the current supporting application of generally applying of 240 * 115 * 90mm brick of China.Thoroughly constitute China's flyash brick product seriation, supportingization and modularization, to adapt to the different building systems of China, different construction function request.
(3), carry out the High Temperature High Pressure steam press maintenance
The adobe of above-mentioned compression moulding is piled up on sign indicating number base car, send into autoclave, in temperature is that 194 ℃～200 ℃, pressure are under 1.3～1.5MPa saturation steam, and steam press maintenance is carried out in 1.5～2 hours, constant temperature 4～6 hours, 2 hours steaming compacting degree of cooling according to heating up.If the autoclave of manufacturer does not reach said temperature and pressure, can adopt and steam press temperature is that 179 ℃～194 ℃, pressure are under 1.0～1.3MPa saturation steam, and steam press maintenance is carried out in 1.5～2 hours, constant temperature 8～12 hours, 2 hours steaming compacting degree of cooling according to heating up.
According to above-mentioned theory foundation and technical scheme, its specific embodiment is as described below:
Embodiment 1
The production volume density is 1300 kilograms/M
3The common solid brick of high blending flyash load-bearing is got flyash and is contained SiO
248.5%, unslaked lime contains CaO 70%, and sand is thick medium sand.
Implementation step is as follows:
Step 1: get C/S=0.50, carry out the Mixture Ratio design.
If: doping quantity of fly ash per-cent is that X, unslaked lime volume per-cent are Y, and the following formula of substitution calculates:
In the formula: C
1---unslaked lime CaO content is 70%
S
1---flyash SiO
2Content is 48.5%
By formula try to achieve doping quantity of fly ash per-cent X=52%, lime intermingled quantity per-cent Y=18%, then sand is 30%.According to the adobe early strength, can not mix gypsum, mixture moisture is controlled at 7～9% of total add-on, can regulate according to the material situation.
1M then
3The compound weighing of the common solid brick of high blending flyash is: 676 kilograms in flyash, 234 kilograms of unslaked limes, 390 kilograms of sands, and water is 117 kilograms;
Step 2: after the material of said ratio added the water mixing and stirring, in aging bunker, stopped 4 hours, again through 5 fens kinds of wheel roller rolling;
Step 3: the compound compression moulding on hydraulic pressure or mechanical pressure forming machine through the rolling activation treatment is the common solid adobe of high blending flyash, and its specification is 240 * 115 * 53mm;
Step 4: adobe being piled up on sign indicating number base car send into autoclave, is that 200 ℃, pressure are under the 1.5MPa saturation steam in temperature, and steam press maintenance is carried out in 2 hours, constant temperature 4 hours, 2 hours steaming compacting degree of cooling according to heating up;
Step 5: product goes out still, stacking.
After testing, 28 days average intensity of the common solid brick of the high blending flyash of present embodiment reaches 22～28MPa, and is higher 1～2 times than 28 days average intensity of the common solid brick of the flyash of prior art processing and manufacturing; Doping quantity of fly ash increases by 30～40%, and drying shrinkage value is lower than 0.28mm/M, will reduce more than 60% than the drying shrinkage value of ordinary fly ash solid brick of the prior art; The anti-freezing property loss of strength reduces more than 50%; The carbonization coefficient has improved one percentage point.
Embodiment 2
The production volume density is 1000 kilograms/M
3, hole ratio is 31% non-bearing high blending flyash modulus hollow brick, get flyash and contain SiO
248.5%, unslaked lime contains CaO70%, is aggregate with the slag.
Implementation step is as follows:
Step 1: get C/S=O.30, carry out the Mixture Ratio design.
If: doping quantity of fly ash per-cent is that X, unslaked lime volume per-cent are Y, sets up calculation formula:
In the formula: C
1---unslaked lime CaO content is 70%
S
1---flyash SiO
2Content is 48.5%
By formula try to achieve doping quantity of fly ash per-cent X=66%, unslaked lime volume per-cent Y=14%, then the slag volume is 20%, mixes gypsum outward O.7%.Mixture moisture is controlled at 6～8%, can regulate according to the material situation.
1M then
3The compound weighing of high blending flyash modulus hollow brick is: 660 kilograms in flyash, 140 kilograms of unslaked limes, 200 kilograms in slag, mix 7 kilograms in gypsum outward, and water is 60 kilograms;
Step 2: after the material of said ratio added the water mixing and stirring, in aging bunker, stopped 3 hours, carry out activation treatment through 6 fens kinds of wheel roller rolling again;
Step 3: the compound compression moulding on hydraulic pressure or mechanical pressure forming machine through the rolling activation treatment is the adobe of non-bearing high blending flyash modulus hollow brick, and its specification is 190 * 190 * 90mm, and hole ratio is 31%;
Step 4: adobe being piled up on sign indicating number base car send into autoclave, is that 179 ℃, pressure are under the 1.OMPa saturation steam in temperature, and steam press maintenance is carried out in 2 hours, constant temperature 10 hours, 2 hours steaming compacting degree of cooling according to heating up;
Step 5: product goes out still, stacking.
After testing, 28 days average intensity of the high blending flyash modulus hollow brick of present embodiment reaches 12～13MPa, improves 20～30% than 28 days average intensity of the common solid brick of the non-bearing flyash of prior art processing and manufacturing; Doping quantity of fly ash increases by 30%, and drying shrinkage value is lower than 0.36mm/M, will reduce by 40～50% than the drying shrinkage value of ordinary fly ash solid brick of the prior art; The anti-freezing property loss of strength reduces more than 50%; The carbonization coefficient has improved one percentage point.And have good thermal and insulating performance, can use for the energy saving building exterior wall.
Embodiment 3
The production volume density is 1360 kilograms/M
3Load-bearing high blending flyash modulus solid brick is got flyash and is contained SiO
248.5%, unslaked lime contains CaO70%, and sand is thick medium sand.
Implementation step is as follows:
Step 1: get C/S=0.45, carry out the Mixture Ratio design.
If: doping quantity of fly ash per-cent is that X, unslaked lime volume per-cent are Y, sets up calculation formula:
In the formula: C
1---unslaked lime CaO content is 70%
S
1---flyash SiO
2Content is 48.5%
By formula try to achieve doping quantity of fly ash per-cent X=59%, unslaked lime volume per-cent Y=16%, then sand is 25%.Mixture moisture is controlled at 8%, can regulate according to the material situation.
1M then
3The material weighing of load-bearing high blending flyash modulus solid brick is: 802.4 kilograms in flyash, 217.6 kilograms of unslaked limes, 340 kilograms of sands, and water is about 108 kilograms;
Step 2: after the material of said ratio added the water mixing and stirring, in aging bunker, stopped 3 hours, again through 5 fens kinds of wheel roller rolling;
Step 3: the compound compression moulding on hydraulic pressure or mechanical pressure forming machine through the rolling activation treatment is the adobe of modulus solid brick, and its specification is 190 * 90 * 90mm;
Step 4: adobe piled up on sign indicating number base car send into autoclave, setting autoclave temp and be 194 ℃, pressure is under the 1.3MPa saturation steam, and steam press maintenance is carried out in 2 hours, constant temperature 12 hours, 2 hours steaming compacting degree of cooling according to heating up;
Step 5: product goes out still, stacking.
After testing, 28 days average intensity of the high blending flyash modulus solid brick of present embodiment reaches 22～28MPa, improves 1～2 times than 28 days average intensity of the common solid brick of the flyash of prior art processing and manufacturing; Doping quantity of fly ash increases by 40%, and drying shrinkage value is lower than 0.32mm/M, will reduce about 50% than the drying shrinkage value of ordinary fly ash solid brick of the prior art; The anti-freezing property loss of strength reduces more than 50%; The carbonization coefficient has improved one percentage point.
Embodiment 4
The production volume density is 1280 kilograms/M
3High blending flyash load-bearing modulus porous brick is got flyash and is contained SiO
248.5%, unslaked lime contains CaO70%, and sand is thick medium sand.
Implementation step is as follows:
Step 1: get C/S=0.40, carry out the Mixture Ratio design.
If: doping quantity of fly ash per-cent is that X, unslaked lime volume per-cent are Y, sets up calculation formula:
In the formula: C
1---unslaked lime CaO content is 70%
S
1---flyash SiO
2Content is 48.5%
By formula try to achieve doping quantity of fly ash per-cent X=50%, unslaked lime volume per-cent Y=15%, then sand is 35%.Mixture moisture is controlled at 8%, can regulate according to the material situation.
1M then
3The compound weighing of high blending flyash load-bearing modulus porous brick is: 640 kilograms in flyash, 192 kilograms of unslaked limes, 448 kilograms of sands, and water is about 102.4 kilograms;
Step 2: after the material of said ratio added the water mixing and stirring, in aging bunker, stopped 3.5 hours, again through 6 fens kinds of wheel roller rolling;
Step 3: the compound compression moulding on hydraulic pressure or mechanical pressure forming machine through the rolling activation treatment is the hole adobe of many bricks of load-bearing modulus, and its specification is 190 * 140 * 90mm, and hole ratio is 25%;
Step 4: adobe piled up on sign indicating number base car send into autoclave, setting autoclave temp and be 200 ℃, pressure is under the 1.5MPa saturation steam, and steam press maintenance is carried out in 2 hours, constant temperature 4～6 hours, 2 hours steaming compacting degree of cooling according to heating up;
Step 5: product goes out still, stacking.
After testing, 28 days average intensity of the high blending flyash load-bearing modulus porous brick of present embodiment reaches 15～20MPa, improves 50% than 28 days average intensity of the common solid brick of the flyash of prior art processing and manufacturing; Doping quantity of fly ash increases by 20%, and drying shrinkage value is lower than 0.36mm/M, will reduce by 40～50% than the drying shrinkage value of ordinary fly ash solid brick of the prior art; The anti-freezing property loss of strength reduces more than 50%; The carbonization coefficient has improved one percentage point.
Claims (6)
1. the manufacture method of a high blending flyash brick, it comprises the steps necessary of flyash brick moulding process, it is characterized in that: it also comprises adjusts effective CaO and SiO in the mix material proportioning
2Ratio range determine step in C/S=0.30～0.50; Its compound is sent in the mould after by proportioning mixing, stirring, ageing and activation treatment, through the step of hydraulic pressure or mechanical extrusion forming adobe; And the step of High Temperature High Pressure maintenance; Described compound is mixed by flyash or ashes, unslaked lime and aggregate basically, and the weight percent of its each component is: flyash or ashes are 40～70%, unslaked lime 10～25%, aggregate 20～35%; Wherein, described aggregate is sand or slag, and sand is thick medium sand; The particle diameter of slag is that 0.25～0.50mm accounts for 40%, 0.50～2.0mm and accounts for 60%; The square hole sieve surplus that described unslaked lime fineness is 0.08mm is less than 10%; Described High Temperature High Pressure maintenance step is: described adobe is sent in the autoclave, saturated-steam temperature in this autoclave is that 194 ℃～200 ℃, pressure are 1.3～1.5MPa, according to the steaming pressuring curing system of 1.5～2 hours heating-up times, constant temperature after 4～6 hours, cooling maintenance in 2 hours; Described high blending flyash brick comprises common solid brick, hollow brick, perforated brick or modulus brick; Wherein modulus brick is modulus solid brick, modulus hollow brick or modulus porous brick, and its specification is: main brick 190 * 190 * 90mm, join brick 190 * 140 * 90mm, 190 * 90 * 90mm, 190 * 240 * 90mm and 190 * 90 * 40mm, supporting each other use.
2, according to the manufacture method of the described high blending flyash brick of claim 1, it is characterized in that: effective CaO and SiO in the described mix material proportioning
2Ratio determine in the step of C/S=0.30～0.50 be:
1) the add-on X that sets flyash or ashes and unslaked lime add-on Y with the ratio that accounts for the compound gross weight, this ratio should gross weight 65～80% between; Set the percentage composition C of effective CaO in the unslaked lime simultaneously
1With effective SiO in flyash or the ashes
2Percentage composition S
1, wherein: C=C
1* Y; S=S
1* X calculates the following formula of above-mentioned numerical value substitution:
Calculate flyash or ashes incorporation X and unslaked lime incorporation Y, this X should be 40～70% of gross weight; This Y should be 10～25% of gross weight;
2) weight percent of X that is obtained by step 1) and Y is determined the incorporation of described aggregate, and described aggregate add-on should be 20～35% of above-mentioned compound gross weight.
3. according to the manufacture method of the described high blending flyash brick of claim 2, it is characterized in that: described compound also is mixed with gypsum as activator, and its volume is the 0-10% of described unslaked lime add-on.
4. according to the manufacture method of claim 1 or 2 or 3 described high blending flyash bricks, it is characterized in that: effective SiO in described flyash or the ashes
2Content is lower than at 40% o'clock, and the admixture fine quartz sand is to increase effective SiO in the compound
2Content, the incorporation of described fine quartz sand account for the 15-20% of flyash or ashes adding gross weight; The square hole sieve surplus that described unslaked lime fineness is 0.08mm is less than 10%.
5. according to the manufacture method of the described high blending flyash brick of claim 4, it is characterized in that: send into mould after described compound stirring, ageing and the activation treatment, step through hydraulic pressure or mechanical extrusion forming adobe is: with the ageing 3～4 hours that stirs in aging bunker of described compound, after the wheel roller activation treatment, its compound being sent in the corresponding mould, is the adobe of high blending flyash brick through hydraulic pressure or mechanical extrusion forming again.
6. according to the manufacture method of the described high blending flyash brick of claim 5, it is characterized in that: described common hollow brick or modulus hollow brick are the non-load bearing tile of hole ratio 〉=30%; Described perforated brick or modulus porous brick are the bearing perforated brick of hole ratio 〉=25%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100061232A CN1266072C (en) | 2004-03-03 | 2004-03-03 | Brick blended high content flyash and mfg. method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100061232A CN1266072C (en) | 2004-03-03 | 2004-03-03 | Brick blended high content flyash and mfg. method thereof |
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| Publication Number | Publication Date |
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| CN1266072C true CN1266072C (en) | 2006-07-26 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104003689B (en) * | 2014-05-09 | 2016-02-24 | 贵州省工业固体废弃物综合利用（建材）工程技术研究中心 | A kind of quartzy tailings brick and preparation method thereof |
| CN105036672A (en) * | 2015-06-26 | 2015-11-11 | 安徽恒创环保建材有限公司 | Autoclaved fly-ash brick and manufacturing method thereof |
| CN105669071B (en) * | 2016-01-19 | 2017-11-24 | 温岭市创嘉信息科技有限公司 | It is a kind of to be used for non-burning brick activator |
| CN106045408A (en) * | 2016-06-07 | 2016-10-26 | 洛阳理工学院 | High-strength building block and preparation method thereof |
| CN107298566A (en) * | 2017-06-13 | 2017-10-27 | 安徽筑园景新型建材科技有限公司 | A kind of environmental protection for building is laid bricks and preparation method thereof |
| CN113636821A (en) * | 2021-05-08 | 2021-11-12 | 铜陵铜冠建安新型环保建材科技有限公司 | Autoclaved perforated brick and preparation method thereof |
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