CN1365955A - Flyash brick and its making method - Google Patents
Flyash brick and its making method Download PDFInfo
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- CN1365955A CN1365955A CN01103113A CN01103113A CN1365955A CN 1365955 A CN1365955 A CN 1365955A CN 01103113 A CN01103113 A CN 01103113A CN 01103113 A CN01103113 A CN 01103113A CN 1365955 A CN1365955 A CN 1365955A
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- China
- Prior art keywords
- flyash
- aggregate
- calcium hydroxide
- brick
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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
- C04B28/18—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
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- 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)
- Processing Of Solid Wastes (AREA)
Abstract
A high-quality fly ash brick is prepared from fly ash, calcium hydroxide, aggregate and water in a certain mix proportion through preparing raw materials, mixing, stirring, plasticizing, mixing with filler, shaping, and curing; or grinding after stirring, calcining, cooling and then mixing with water or filler for hydrating reaction. Its advantages are high compressive strength and bending strength, and low cost.
Description
The present invention relates to utilization and the processing of sintered material as the brickmaking filler.
With flyash is that starting material are produced building material brick, must meet the standard-required of relevant " flyash brick ".Traditional manufacture craft will reduce under the gelling material situation, breaks through standard index, reaches but not a duck soup of high compression strength and folding strength.Chinese patent application number 98114315 disclosed " steam-cured flyash bearing brick prescription and technologies ", raw material comprises flyash, lime, gypsum, aggregate, wherein aggregate is power plant's furnace bottom slag or lime rock ballast.The gelling material that wherein contains gypsum, according to record, according to its prescription and manufacture craft, they are brought up to the ultimate compression strength of this heavy-load bearing brick and folding strength more than the MU10 level from general 7.5 grades, and anti-thawing, drying shrinkage all reach the GB requirement.Because hydration reaction still can not fully carry out in the technological process of this invention, so quality index is difficult to further improve and break through.
The objective of the invention is to propose a kind of hydration reaction flyash brick manufacture method more fully, it can significantly improve flyash brick Products Quality index, makes tile product reach the level of premium grads.
Flyash brick of the present invention, its batching is formed and is comprised flyash, calcium hydroxide, aggregate and water, and wherein per distribution ratio is by weight:
10 parts in flyash
Calcium hydroxide 1-2.5 part
Aggregate 0-15 part
Water is an amount of.
Flyash brick of the present invention, its batching is formed and is comprised flyash, calcium hydroxide, filler aggregate, and wherein proportioning is by weight percentage:
10 parts in flyash
Concentration is calcium hydroxide aqueous solution 2-5 part of 20-38%
Aggregate 0-15 part.
Above-mentioned preferred weight percent proportioning is:
10 parts in flyash
Concentration is calcium hydroxide aqueous solution 3-4.5 part of 30-35%
Aggregate 0-8 part.
The weight percent proportioning of above-mentioned the best is:
10 parts in flyash
Concentration is 3.5 parts of 33% calcium hydroxide aqueous solutions
Aggregate 0-3 part.
Flyash brick manufacture method of the present invention, wherein processing step comprises:
1, get the raw materials ready, require to get the raw materials ready flyash routinely, calcium hydroxide, aggregate, (comprising auxiliary packing), aggregate is mainly rubble (melon seeds sheet), sand, cinder;
2, flyash and to be deployed into concentration be that the calcium hydroxide aqueous solution of 20-38% drops into the stirrer thorough mixing and stirs;
3, strengthen active the processing, will mould experienced 2-4 time by plasticator through the well-mixed mixture that is leather hard;
4, do once more behind the adding aggregate fully to stir;
5, moulding is made adobe with material by brick press;
6, maintenance adopts the mode of steaming pressure or natural curing to carry out maintenance;
7, finished product.
Above-mentioned processing step 2,3,4 mixes with siccative when it is characterized in that flyash mixes with calcium hydroxide, and mixed activation treatment is ground earlier, roasting, cooling, adds water or filler then and stirs and carry out hydration reaction.
Advantage of the present invention is;
1, the fully mixed of material makes hydration reaction more abundant, provides prerequisite for improving quality of item.The link that the whole technology of the present invention has been given prominence to mixed stirring, thorough mixing by basic material, for activation treatment provides good condition, plasticate or grind and further strengthened mixed effect in the roasting process at it, contact is more even between the material particles, then make activation, hydration reaction is more abundant, the gelling better effects if.And add aggregate through fully stirring, can not influence hydration reaction and gross.Processing condition are also looser.It has solved the problem that how effectively to improve the flyash brick quality of item under low cost.
When 2, utilizing High Temperature High Pressure steam-cured, can obviously shorten man-hour, raise the efficiency.Flyash and calcium hydroxide carry out aquation heat seal reaction the time can generate vigorous mullite of holder and low calcium Calucium Silicate powder, and finished product intensity is increased, but sluggish at normal temperatures, but in the next accelerated reaction of High Temperature High Pressure, reach the finished product requirement in 4-8 hour.
3, applicable surface is wider.Technology of the present invention is equally applicable to the production of perforated brick, hollow brick goods.
4, product strength index of the present invention is better than standard-required.As quick-set, aggregate also can freely be matched without gypsum, cement in the present invention, thereby cost can reduce.Even so, the ultimate compression strength mean value that its goods sample detects is 23.2Mpa, and folding strength mean value is 6.9Mpa, still is better than the prior art desired value, and has reached the premium grads level of standard code comprehensively.
Be described further below in conjunction with embodiment and process flow sheet.
Embodiment 1
Referring to shown in Figure 1, its technical process is: △ gets the raw materials ready-mixes and stir-and plasticates-filled stirring-moulding-steam press maintenance-finished product.
Get 10 parts in flyash by weight, concentration is 3 parts of the aqueous solution of 33% calcium hydroxide, it is dropped into stirrer fully mix and stir, and mixes; Again mixture is put into plasticator and plasticated and roll, feed back 3 times, material is black or avy blue, and big portion is shred; Send into stirrer then and add pan feeding and weigh 27% crushed stone aggregate (melon seeds sheet), stir; The brick pressing machine pressure forming is sent in discharging, and operating pressure is 280Kg/CM
2, the moulding adobe can directly be moved, pile; Send at last in the autoclave to steam and pressed 8 hours, vapor pressure is 8 normal atmosphere, and temperature is 170 ℃, and decompression behind steam press maintenance, cooling are finished bricks, grade 〉=15 grade.
Embodiment 2
Referring to shown in Figure 2, its technical process is:
Get 10 parts in flyash according to weight part, concentration is 4.5 parts of the aqueous solution of 23% calcium hydroxide, two kinds of materials is dropped into stirrers fully mix and stir, and mixes; Mixture being put into plasticator plasticates and rolls feed back 2 times again; Material after plasticating is sent into two-stage vacuum and is extruded in the brick press, extrudes and cut into adobe; Adobe is sent into to steam in the autoclave and is pressed 5 hours (between general 4-8 hour), vapor pressure is 8 normal atmosphere (being generally 7-8 normal atmosphere), and temperature is 168 ℃ (being generally 150-170 ℃), reduces pressure behind steam press maintenance, comes out of the stove, cools off, be finished bricks, grade 〉=15 grade.If directly adobe is transported the stockyard pile before steam-cured, natural curing 10 days, the strength grade of finished product is still more than 15 grades.Steam curing process can shorten the duration in man-hour widely by contrast, enhances productivity.Should suit measures to local conditions in the practice, use flexibly.In the present embodiment, after the plasticating technology step, can also be increased in and add aggregate (melon seeds sheet, sand or crushed slag), the uniform step of restir in the stirrer.
Embodiment 3
Referring to shown in Figure 3, its technical process is:
Get 9 parts of flyash weight part proportionings, slaked lime (white lime, the main calcium hydroxide that contains) 1 part, mix thoroughly mixing and stirring in the two materials input stirrer, mixture is delivered to grinding in ball grinder to 200 order again, dropped into roasting in the rotary roasting furnace then, maturing temperature is 900-1200 ℃, time is 10 minutes, coming out of the stove is cooled to room temperature again, adds 1: 1 coarse sand of compound weight part and its water of 25%, stirs in stirrer together, fully mix thoroughly, then send two-stage vacuum to and extrude brick press, extrude, excision forming, the adobe blank directly transports the stockyard pile, natural curing 10 days, the strength grade of finished product are still more than 15 grades.If the adobe blank is sent in the autoclave to steam and is pressed, steam and press about 4 hours, vapor pressure is 8 normal atmosphere, temperature is 168 ℃, reduces pressure, goes out still, cooling, is finished bricks, grade 〉=15 grade.Similarly adding in water, the filler whipping step among the embodiment, whether the adding of filler can be selected in bigger scope, also can not add filler aggregate and auxiliary material, and just add water.The filler water-absorbent that adds is better, and then the water yield increases, and is partial to high-end value; Otherwise it is not then filled.
Calcium hydroxide among the embodiment is selected slaked lime usually for use, if in the slaked lime with shell calcining goods compatibility, (can to half) then the quality index value of tile product be more stable.
According to proportioning of the present invention and method, can conveniently enumerate other example, condition and scope are all comparatively loose.For example:
Flyash calcium hydroxide filler aggregate water or concentration with reference to 8 parts 30 parts of 1. 10 parts 1 part of proportioning example (contain shell calcining material 0.5 part) cinders with reference to 15 parts 38 parts of 2. 10 parts of 2.5 parts of cinders of proportioning example with reference to 15 part 20% of 3. 10 parts of 5 parts of aqueous solution cinder of proportioning example with reference to the 4. 10 parts of 2 parts of aqueous solution/38% of proportioning example with reference to 3 part 35% of 5. 10 parts of 3.5 parts of aqueous solution coarse sand of proportioning example
Part flyash brick sample mechanics strength test data
| Ultimate compression strength | Folding strength | ||||||||||||
| Length cm | Width cm | Load area cm2 | Maximum loading KN | Compression strength value MPa | Ultimate compression strength mean value MPa | Monolithic minimum M Pa | Length cm | Width cm | Load area cm2 | Maximum loading KN | Folding strength value MPa | Folding strength mean value MPa | Monolithic minimum M Pa |
| ?10.1 | ?11.5 | ?116.2 | ?276.0 | ?23.8 | ?23.2 | 19.8 | ?11.5 | ?5.0 | ?20.0 | ?7.10 | ?7.4 | ?6.9 | ?6.2 |
| ?10.2 | ?11.5 | ?117.3 | ?255.0 | ?21.7 | ?11.5 | ?5.1 | ?20.0 | ?6.15 | ?6.2 | ||||
| ?10.1 | ?11.5 | ?116.2 | ?294.0 | ?25.3 | ?11.5 | ?5.1 | ?20.0 | ?7.00 | ?7.0 | ||||
| ?10.6 | ?11.5 | ?121.9 | ?313.0 | ?25.7 | ?11.5 | ?5.1 | ?20.0 | ?6.40 | ?6.4 | ||||
| ?10.3 | ?11.5 | ?118.5 | ?274.0 | ?23.1 | ?11.5 | ?5.0 | ?20.0 | ?6.75 | ?7.0 | ||||
| ?10.3 | ?11.5 | ?118.4 | ?234.0 | ?19.8 | ?11.5 | ?5.1 | ?20.0 | ?7.15 | ?7.2 | ||||
| ?10.2 | ?11.5 | ?117.3 | ?278.0 | ?23.7 | ?11.5 | ?5.2 | ?20.0 | ?6.85 | ?6.6 | ||||
| ?10.3 | ?11.5 | ?118.4 | ?275.0 | ?23.2 | ?11.5 | ?5.0 | ?20.0 | ?7.15 | ?7.5 | ||||
| ?10.5 | ?11.5 | ?120.8 | ?255.0 | ?21.1 | ?11.5 | ?5.2 | ?20.0 | ?7.55 | ?7.3 | ||||
| ?10.8 | ?11.5 | ?124.2 | ?309.0 | ?24.9 | ?11.5 | ?5.2 | ?20.0 | ?7.00 | ?6.8 | ||||
| Building material industry standard " flyash brick " JC239-91 of country standard: | 20 15 above premium grads 10 acceptable end products 7.5 salable product | ??20.0 ??15.0 ??10.0 ??7.5 | ?15.0 ?11.0 ?7.5 ?5.6 | ?4.0 ?3.2 ?2.5 ?2.3 | ?3.0 ?2.4 ?1.9 ?1.5 | ||||||||
Test-results: intensity rank meets 20
The test by " flyash brick " (JC239-91) standard carry out.
Claims (6)
1, a kind of flyash brick, its batching is formed and is comprised flyash, calcium hydroxide, aggregate and water, and wherein per distribution ratio is by weight:
10 parts in flyash
Calcium hydroxide 1-2.5 part
Aggregate 0-15 part
Water is an amount of.
2,, it is characterized in that material proportion is by weight percentage according to the described flyash brick of claim 1:
10 parts in flyash
Concentration is calcium hydroxide aqueous solution 2-5 part of 20-38%
Aggregate 0-15 part.
3,, it is characterized in that the optimum ratio of material is by weight percentage according to the described flyash brick of claim 2:
10 parts in flyash
Concentration is calcium hydroxide aqueous solution 3-4.5 part of 30-35%
Aggregate 0-8 part.
4,, it is characterized in that the best proportioning of material is by weight percentage according to claim 2 or 3 described flyash bricks:
10 parts in flyash
Concentration is 3.5 parts of 33% calcium hydroxide aqueous solutions
Aggregate 0-3 part.
5, a kind of method of making as the flyash brick of above-mentioned claim, wherein processing step comprises:
Get the raw materials ready (1), requires to get the raw materials ready flyash routinely, calcium hydroxide, and aggregate, aggregate are mainly rubble, sand, cinder;
(2) flyash is that the calcium hydroxide aqueous solution of 20-38% drops into the stirrer thorough mixing and stirs with being deployed into concentration;
(3) strengthen active the processing, will mould experienced 2-4 time by plasticator through the well-mixed mixture that is leather hard;
(4) are done fully to stir after adding aggregate once more;
(5) moulding is made adobe with material by brick press;
(6) maintenance adopts the mode of steaming pressure or natural curing to carry out maintenance;
(7) finished product.
6, according to the method for the described manufacturing flyash brick of claim 5, it is characterized in that processing step 2,3,4, mix with siccative when it is characterized in that flyash mixes with calcium hydroxide, mixed activation treatment, grind earlier, roasting, cooling, add water or filler then and stir and carry out hydration reaction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01103113A CN1365955A (en) | 2001-01-17 | 2001-01-17 | Flyash brick and its making method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01103113A CN1365955A (en) | 2001-01-17 | 2001-01-17 | Flyash brick and its making method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1365955A true CN1365955A (en) | 2002-08-28 |
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ID=4653116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN01103113A Pending CN1365955A (en) | 2001-01-17 | 2001-01-17 | Flyash brick and its making method |
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| Country | Link |
|---|---|
| CN (1) | CN1365955A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7264673B2 (en) | 2001-11-28 | 2007-09-04 | Unisearch Limited | Manufacture of articles from fly ash |
| CN107162518A (en) * | 2017-07-12 | 2017-09-15 | 包头市晟泰环保科技建材有限责任公司 | Concrete solid brick and preparation method thereof |
-
2001
- 2001-01-17 CN CN01103113A patent/CN1365955A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7264673B2 (en) | 2001-11-28 | 2007-09-04 | Unisearch Limited | Manufacture of articles from fly ash |
| CN107162518A (en) * | 2017-07-12 | 2017-09-15 | 包头市晟泰环保科技建材有限责任公司 | Concrete solid brick and preparation method thereof |
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