CN1058950C - Cold resistant cold curing flyash wall brick and making method thereof - Google Patents
Cold resistant cold curing flyash wall brick and making method thereof Download PDFInfo
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- CN1058950C CN1058950C CN97104740A CN97104740A CN1058950C CN 1058950 C CN1058950 C CN 1058950C CN 97104740 A CN97104740 A CN 97104740A CN 97104740 A CN97104740 A CN 97104740A CN 1058950 C CN1058950 C CN 1058950C
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- cold
- flyash
- type
- brick
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- 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
The present invention relates to a cold-resistant cold-curing fly ash brick for building walls and a manufacturing method thereof. The manufacturing method comprises: industrial waste materials, such as fly ash, used sand, etc., are used as principal raw materials, added with a composite solidifying agent and an air-suction composite admixture simultaneously, pressed to form by a semi-dry process and naturally cured to form the cold-resistant cold-curing fly ash brick for building walls. The cold-resistant cold-curing fly ash brick for building walls is prepared from 30 to 79 wt% of fly ash, 5 to 35 wt% of used sand, 5 to 20 wt% of engineering sand, 12 to 38 wt% of composite solidifying agent, 0.25 to 1.05 wt% of composite admixture and 6 to 28 wt% of water. The cold-resistant cold-curing fly ash brick for building walls has the advantages of high frost resistance and high strength, and can be used in building engineering in cold areas.
Description
The present invention relates to the two bricks and preparation method thereof, cold resistant cold curing flyash wall brick and preparation method thereof of exempting from of a kind of flyash.Be the materials for wall in the material of construction.
The present non-autoclaved and unburned brick of producing of various flyash, it is poor to exist frost resistance mostly, and the little shortcoming of waste residue utilization amount.Along with industrial expansion development of electric power industry particularly, the flyash quantity discharged grows with each passing day.China's flyash annual emissions has now been broken through 100,000,000 tons according to statistics, and only is about 30% of quantity discharged to the utilization of coal ash rate at present.Therefore improve the utilization of coal ash rate, the improvement of strengthening comprehension, reducing environmental pollution is the task of top priority.And the flyash brick that adopts the free of calcining and steam curing method to produce at present can only be used for the areas on the south the Huaihe River such as the higher south of temperature on average such as Yunnan, Sichuan, Hunan.And the strength mark of brick is lower, can not be used for cold district, and use is restricted.
The objective of the invention is to cold resistant cold curing flyash wall brick that proposes a kind of Han Qu of can be used for building and preparation method thereof.Improve the pore structure of flyash brick, improve anti-freezing property, improve the utilization ratio of industrial residue simultaneously to greatest extent, reduce environmental pollution.
Major technique content of the present invention, this cold resistant cold curing flyash wall brick is to be raw material with flyash, useless molding sand, industrial residue, adds an amount of composite curing agent and bleed type compound additive simultaneously, through semidrying compression moulding, natural curing is made, its weight proportion is flyash 30～79%, useless molding sand 5～35%, engineering sand 5～20%, composite curing agent 12～38%, bleed type compound additive 0.25～1.05%, water 6～28%.
Wherein composite curing agent is to be composited by gypsum, cement, carbide slag or lime etc., and its weight proportion is, 3.5～12 parts in 1 part in gypsum, 4～5 parts of cement, carbide slag or lime;
Compound additive by air entrapment agent, early strength water-reducing agent, be rich in active SiO
2Industrial waste be processed into, its weight proportion is, 1 part of air entrapment agent, 13～40 parts of early strength water-reducing agents are rich in active SiO
20.1～65 part of industrial waste, air entrapment agent is that AEA202 (is to be the anion surfactant of main component with the modified rosin hydrochlorate, the peculiar limit of Shanghai Mace company produces), (main component is the hydroxyl carboxylic compound to BLY, Ministry of Water Resources and Power Industry produces for 12 innings), (with the natural wild plant of saponin is major ingredient to the SJ-1 type, Shanghai Tongji University is produced), AE is (by colophonium pyrolytic polymer, polyamines etc. are synthetic, chemical plant, the south of a city, Shanxi Province produces), PC-2 type (colophonium pyrolytic polymer, the Ministry of Communications produces) etc., early strength water-reducing agent is Venus 4 types (main component sodium sulfate, the cement mill, Suzhou produces), S type (main component sodium sulfate, Qidong admixture factory produces), UNF-4 type (sodium formaldehyde condensation products, the Ling Xin chemical plant produces), FDN type (naphthalene sulfonic acidformaldehyde condensation product, Zhanjiang admixture factory), the AS type is (by tensio-active agent, hardening accelerator is composited, flourish chemical plant, Shenyang City) etc.;
Ingredient requirement:
The physicochemical property of flyash directly affect the quality of brick, and reply flyash quality is carried out necessary selection and check in the production, makes its requirement that meets brickmaking technology, and the present invention does wet ash and all can use, and the requirement of flyash Chemical Composition is:
SiO
2＞40%, Al
2O
3＞15%, MgO＜5%, SO
3＜4%, loss on ignition＜12%, loose thousand capacity＞550kg/m
3
The composition of composite curing agent requires:
Cement: be ordinary Portland cement, label 425
#, also can use cement clinker.
Lime: effective CaO 〉=60% (, needing ageing 24 hours) if use unslaked lime;
Gypsum: SO
3〉=28%, aggregate need sift out the particle greater than 10mm;
Carbide slag: carbide slag is enterprises such as chemical industry, machinery remaining waste residues after acetylene gas is obtained in the calcium carbide hydrolysis, and main component is a calcium hydroxide, and other has a little impurity.Quality composition requirement to carbide slag is: MgO＜5%, A-CaO＞50%, fineness 0.2mm hole sizer screen over-size＜5%, 0.08mm hole sizer screen over-size＜30% do not contain remaining acetylene gas.
The making method of being somebody's turn to do cold-resistant cold curing flyash wall brick is that elder generation with the composite curing agent mix grinding, together stirs flyash with aggregate then; Compound additive is dissolved in the water earlier afterwards and the stirring of above-mentioned compound mixed together, repressed moulding, natural curing is made.
Its technical process is: (videing infra)
Technique effect of the present invention is, this cold resisting type solidified fly ash is built a wall in the brick proportioning because the compound additive excitation is arranged, the activity of flyash improves greatly, hydration reaction takes place generate the hydrated product with gelating property, with the composite curing agent acting in conjunction aggregates such as engineering sand, useless molding sand are glued to, make tile product produce intensity; Compound additive can be introduced microbubble in addition, improves the tile product pore size distribution, not only improves intensity, and significantly improves anti-freezing property and other endurance quality of brick.Through a large amount of experiments and test shows, this brick of building a wall has good physical and mechanical property and endurance quality, especially very quantum jump is arranged aspect the flyash brick anti-freezing property improving, the freeze-thaw-index reaches under-20 ℃ of conditions, behind the freeze-thaw cycle 20 times, weight loss is no more than 2%, and loss of strength is no more than 5%, satisfy the service requirements of BUILDINGS IN COLD AREAS engineering, promote the use of flyash wall brick for north cold area and opened up new prospect.Industrial residue utilization rate height (more than 80%) in addition, the masonry structure excellent property, produce and adopt semidrying compression moulding, natural curing, saved a large amount of maintenance energy of steam-cured or autoclaved fly ash brick, a less investment, production cost is low, be that a kind of being convenient to suited measures to local conditions, the novel wall material of energy wide popularization and application.As follows through brick endurance quality test that the MU10 of plant produced and MU15 level are built a wall:
Table 1 brick endurance quality test-results
| Sequence number | Test subject | Test-results | Standard code | Referring to standard | |
| 1 | Freeze-thaw cycle is 20 times under the antifreezing test-20 ℃ condition | Weight loss (%) loss of strength (%) | -0.4～1.2 -2.1～4.3 | ≤2％ ≤20％ | JC239-91 JG239-91 |
| 2 | Scum | Do not have | Index such as superior | GB5101 | |
| 3 | Water tolerance (full water intensity) MPa | 9.0～9.7 | ＞6.5 | JC422-91 | |
| 4 | The carbonization coefficient | 1.0～1.2 | JC239-91 | ||
| 5 | Contract with dry rate (mm/m) | 0.59～0.81 | ≤0.85 | JC239-91 | |
The long-term behaviour of table 2 brick
| The length of time | 7 days (MPa) | 28 days (MPa) | 1 year (MPa) | 2 years (MPa) | ||||
| Intensity | Resistance to compression | Anti-folding | Resistance to compression | Anti-folding | Resistance to compression | Anti-folding | Resistance to compression | Anti-folding |
| MU10 | 7.84 | 1.44 | 12.1 | 2.82 | 16.6 | 3.45 | 19.6 | 4.11 |
| MU15 | 8.97 | 1.98 | 16.3 | 4.37 | 18.2 | 4.82 | 20.4 | 4.93 |
The The performance test results of table 3 MU10 type HZF brick
| Sequence number | Test subject | Test-results | Standard code | Remarks | |
| 1 | Visual appearance | Size deviation＜± 3 nothings are split | Reach a top grade level | JC239-91 | |
| 2 | 28d resistance to compression (MPa) | Ten average minimums | 13.5 9.2 | 10 (first-class indexs) 7.5 | JC239-91 |
| 3 | 28d resistance to compression (MPa) | Ten average minimums | 2.9 2.4 | (2.52 first-class index) 1.9 | JC239-91 |
| 4 | Natural mode | Heavy (kg) unit weight (kg/m) of monolithic | 2.50 1700 | The apparent density of fired common brick is 1800～1900 | |
| 5 | Full aquosity | Heavy (kg) unit weight (kg/m) of monolithic | 2.80 1920 | The full water capacity of fired common brick heavily is 1850～2100 | |
| 6 | Dry state | Heavy (kg) unit weight (kg/m) of monolithic | 2.45 1680 | The unit dry weight of fired common brick is 1700～1800 | |
| 7 | Water-intake rate | Average minimum | 12.5 11.6 | ＜20％ | The JC239-91 fired common brick is 8%-16% |
| 8 | Thermal conductivity | (0.605W/MK fired common brick be 0.78W/MK) | JC275-80 | ||
The The performance test results of table 4 MU15 type HZF brick
| Sequence number | Test subject | Test-results | Standard code | Remarks | |
| 1 | Visual appearance | Size deviation＜± 2 nothings are split | Reach the top grade level | JC239-91 | |
| 2 | 28d resistance to compression (MPa) | Ten average minimums | 17.5 13.4 | 15 (first-class indexs) 11 | JC239-91 |
| 3 | 28d resistance to compression (MPa) | Ten average minimums | 5.5 4.8 | (3.2 first-class index) 2.4 | JC239-91 |
| 4 | Natural mode | Heavy (kg) unit weight (kg/m) of monolithic | 2.84 2000 | The apparent density of fired common brick is 1800～1900 | |
| 5 | Full aquosity | Heavy (kg) unit weight (kg/m) of monolithic | 3.02 2100 | The full water capacity of fired common brick heavily is 1850～2100 | |
| 6 | Dry state | Heavy (kg) unit weight (kg/m) of monolithic | 2.66 1850 | The unit dry weight of fired common brick is 1700～1800 | |
| 7 | Water-intake rate | Average minimum | 11.9 8.7 | ＜20％ | The JC239-91 fired common brick is 8%-16% |
| 8 | Thermal conductivity | (0.77W/MK fired common brick be 0.78W/MK) | JC275-80 | ||
The realization embodiments of the invention are:
Embodiment 1: weight proportion is flyash: useless molding sand: composite curing agent: engineering sand: compound additive: water=50: 20: 14: 6: 0.31: 10, according to above-mentioned technology making method, can be made into a kind of MU10 level brick of building a wall, and its performance sees Table 3.
Embodiment 2: weight proportion is flyash: useless molding sand: composite curing agent: engineering sand: compound additive: water=43: 19: 19: 10: 0.86: 8.Make according to above-mentioned technology, can be made into a kind of MU15 level brick of building a wall, its performance sees Table 4.
Claims (2)
1, a kind of cold resistant cold curing flyash wall brick, it is characterized in that being is raw material with flyash, useless molding sand industrial residue, adds composite curing agent and bleed type compound additive, simultaneously through semidrying compression moulding, natural curing is made, its weight proportion is flyash 30～79%, useless molding sand 5～35%, engineering sand 5～20%, composite curing agent 12～38%, compound additive 0.25～1.05%, water 6～28%; Composite curing agent is to be composited by gypsum, cement, carbide slag or lime, and its weight proportion is, 3.5～12 parts in 1 part in gypsum, 4～5 parts of cement, carbide slag or lime; Bleed type compound additive by air entrapment agent, early strength water-reducing agent, be rich in active SiO
2Industrial waste be processed into, its weight proportion is, 1 part of air entrapment agent, 13～40 parts of early strength water-reducing agents are rich in active SiO
20.1～65 part of industrial waste, air entrapment agent is AEA202, be to be the anion surfactant of main component with the modified rosin hydrochlorate, BLY, main component is the hydroxyl carboxylic compound, the SJ-1 type, with the natural wild plant of saponin is major ingredient, AE, by colophonium pyrolytic polymer, polyamines etc. are synthetic, the PC-2 type, colophonium pyrolytic polymer, early strength water-reducing agent is Venus 4 types, main component sodium sulfate, the S type, main component sodium sulfate, the UNF-4 type, the sodium formaldehyde condensation products, the FDN type, naphthalene sulfonic acidformaldehyde condensation product, the AS type, by tensio-active agent, hardening accelerator is composited etc.; The flyash Chemical Composition is SiO
2＞40%, Al
2O
3＞15%, MgO＜5%, SO
3＜4%, loss on ignition＜12%, loose thousand capacity＞550kg/m
3The composition of composite curing agent is that cement is ordinary Portland cement, label 425
#, also available cement clinker; The effective CaO of lime 〉=60% (, needing ageing 24 hours) if use unslaked lime, the SO of gypsum
3〉=28%, aggregate need sift out the particle greater than 10mm, and the composition of carbide slag is MgO＜5%, A-CaO＞50%, and fineness is 0.2mm hole sizer screen over-size＜5%, 0.08mm hole sizer screen over-size＜30%, does not contain remaining acetylene gas.
2, the manufacture method of the described cold resistant cold curing flyash wall brick of claim 1 is, flyash 30-79% together stirs with aggregate useless molding sand 5-35%, engineering sand 5-20% then with composite curing agent 12-38% mix grinding by weight ratio earlier; Bleed type compound additive 0.25-1.05% is dissolved in back and above-mentioned compound mixed together stirring among the water 6-28% earlier, and repressed moulding, natural curing promptly can be made into brick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97104740A CN1058950C (en) | 1997-03-28 | 1997-03-28 | Cold resistant cold curing flyash wall brick and making method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97104740A CN1058950C (en) | 1997-03-28 | 1997-03-28 | Cold resistant cold curing flyash wall brick and making method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1194953A CN1194953A (en) | 1998-10-07 |
| CN1058950C true CN1058950C (en) | 2000-11-29 |
Family
ID=5167472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97104740A Expired - Lifetime CN1058950C (en) | 1997-03-28 | 1997-03-28 | Cold resistant cold curing flyash wall brick and making method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1058950C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101417475B (en) * | 2008-09-27 | 2010-06-09 | 秦大春 | No-burned brick manufacture method |
| CN102627468A (en) * | 2012-04-12 | 2012-08-08 | 金立虎 | Waste foundry sand aerated concrete building block and production process thereof |
| CN102627438B (en) * | 2012-04-23 | 2017-02-15 | 金立虎 | Waste cast moulding sand powder ash aeration concrete building block and production process thereof |
| CN103482932B (en) * | 2013-09-12 | 2016-05-11 | 周建平 | A kind of frost resistance concrete and preparation method thereof |
| CN105837147A (en) * | 2016-03-25 | 2016-08-10 | 刘建荣 | Casting used sand composite brick and preparation method |
| CN111055382A (en) * | 2019-12-31 | 2020-04-24 | 湖南耀盛新型建材有限公司 | Brick making feeding system |
| CN111848118B (en) * | 2020-07-15 | 2022-12-09 | 山西一建集团有限公司 | High-frost-resistance antique blue brick and preparation process thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1046149A (en) * | 1989-04-08 | 1990-10-17 | 国家建筑材料工业局苏州混凝土水泥制品研究院 | Naturally-cured powdered coal ash brick |
| CN1050173A (en) * | 1990-03-17 | 1991-03-27 | 山东建材学院 | Alkaline dregs and powder coal ash bricks exempted from firing |
| CN1059325A (en) * | 1990-12-10 | 1992-03-11 | 李怀玉 | A kind of flyash brick and preparation method thereof |
| CN1133271A (en) * | 1995-12-26 | 1996-10-16 | 李善模 | Brick making from fly-ash and used additive |
-
1997
- 1997-03-28 CN CN97104740A patent/CN1058950C/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1046149A (en) * | 1989-04-08 | 1990-10-17 | 国家建筑材料工业局苏州混凝土水泥制品研究院 | Naturally-cured powdered coal ash brick |
| CN1050173A (en) * | 1990-03-17 | 1991-03-27 | 山东建材学院 | Alkaline dregs and powder coal ash bricks exempted from firing |
| CN1059325A (en) * | 1990-12-10 | 1992-03-11 | 李怀玉 | A kind of flyash brick and preparation method thereof |
| CN1133271A (en) * | 1995-12-26 | 1996-10-16 | 李善模 | Brick making from fly-ash and used additive |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1194953A (en) | 1998-10-07 |
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| C06 | Publication | ||
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Granted publication date: 20001129 |