CN1167738A - Coal gangue concrete products and preparing method thereof - Google Patents
Coal gangue concrete products and preparing method thereof Download PDFInfo
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- CN1167738A CN1167738A CN96115369A CN96115369A CN1167738A CN 1167738 A CN1167738 A CN 1167738A CN 96115369 A CN96115369 A CN 96115369A CN 96115369 A CN96115369 A CN 96115369A CN 1167738 A CN1167738 A CN 1167738A
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- coal gangue
- concrete
- gangue concrete
- steel plate
- light
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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
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Abstract
A coalgangue-concrete product such as whole plate, balcony plate, stair, beam and trench cover is made up of coal gangue as main raw material, cement and water through mixing them together, constructing mould, putting reinforcing net in the mould, pouring concrete in mould on the hot mould stand of hollow steel plate, vibration, dry-wet thermal curing including preheating, heating, keeping temp constant and cooling, and demoulding. The strength levels of product may reach CL15, CL20, CL25 or CL30. The size is 5-30 mm for the coarse aggregate of coal gangue and 0-5 mm for fine aggregate.
Description
The invention belongs to building concrete member, particularly a kind of is the coal gangue concrete products and the preparation method of major ingredient preparation with the self-igniting coal gangue.
At present, in the concrete of ordinary construction, aggregate accounts for the 70-80% of sclerosis back volume, this class concrete is an aggregate with the natural sand masonry, its proportioning is 1: 2: 4, and the natural sand masonry is a coarse-fine aggregate production cost height, from great, intensity is low, changes with light thick, the fine aggregate of the bastard coal masonry structural concrete of spontaneous combustion then beyond example.Vapor cure is generally adopted in this external making concrete product maintenance, and a kind of is steam curing kiln, by steam comb discharged steam in kiln, and the curing concrete member, this structure power consumption is high, and curing cycle is long.The another kind of shallow pond concrete pedestal that adopts, the maintenance of button cover feeding steam heat temperature is pounded to hit and collide to pedestal at operation process and is caused pedestal breakage to occur in shallow pond, influence the visual appearance of panels face, concrete pedestal heat conductivility is bad, and the pedestal temperature is low, steam consumption is big, the cost height causes curing cycle long, and labour productivity is low, maintenance temperature, the humidity of concrete member be can not satisfy, component strength and technical feature influenced.
The objective of the invention is to overcome above technical deficiency, providing a kind of is light thick, fine aggregate with the self-igniting coal gangue, with coal gangue concrete products of the dried hydrothermal curing technology of empty stomach steel plate hot-die pedestal and preparation method thereof.
Task of the present invention is that coal gangue concrete products is applicable to the coal gangue of spontaneous combustion, and through chemical analysis and determination of activity, loss on ignition is not more than 5%, SO
3Content is not more than 1%, 30 day 15 times lime absorption values and is not less than 30 milligrams/gram, fineness 4900 holes/centimetre
2Screen over-size is not more than 8%, the light coarse aggregate 41～44% of coal gangue, the light fine aggregate 23.5～26% of coal gangue, cement 17.2～20%, add water 0.13～13.3% and fully stir into half moisture state mixture, the slump is 30-50mm, and generating C-S-H (I) and C-S-H (II) is main C-S-H crystallite or armorphous hydrated calcium silicate; C
3AH
6And C
4AH
11-19Drated calcium aluminate, C
13FH
6And C
4FH
13Hydrated calcium ferrite, C
3AL.CaSO
4.12H
2O aquation calcium sulphoaluminate and Ca (OH)
2The crystal hydrated product, basic identical with the aquation of silicate cement, coal gangue goods mesosilicic acid salts contg reaches more than 70%.After coal gangue concrete after stirring is poured into mould, on empty stomach steel plate hot-die pedestal, do-hydrothermal curing, through precuring, intensification, constant temperature, four battery limit (BL)s of cooling, increase coverture on the concrete surface and keep temperature, humidity, top temperature is 80-95 ℃, good heat conductivity, temperature homogeneous and controllable, make aquation abundant, degree of crystallinity improves, and has improved the concrete strength rate of growth, and demould time is 24 hours, raise labour productivity, reduce energy consumption.
Coal gangue concrete products and preparation method, with the coal gangue is light thick, fine aggregate, utilize waste residue, cost is low, reduces and pollutes, goods unit weight is low, intensity is high, utilize empty stomach steel plate hot-die pedestal that coal gangue concrete is done-hydrothermal curing, the concrete structure is improved, aquation is abundant, concrete does not have serious dehydration, promotes later stage goods aquation gain in strength.
Specify with by way of example below in conjunction with accompanying drawing.
Fig. 1 shows coal gangue concrete products steel plate hot-die pedestal one-piece construction figure on an empty stomach.
Fig. 2 shows coal gangue concrete products steel plate hot-die pedestal monomer sectional view on an empty stomach.
Fig. 3 shows that coal gangue concrete products does-the hydrothermal curing heating curve.
Coal gangue concrete products is by the coal gangue concrete products of light thick, the fine aggregate of the gangue of cement, granulation, water, reinforcing bar preparation, and its key component is:
(1) choosing particle diameter is 5-30mm, bulk density 1100～1200kg/m2, cylindrical compress strength 7-8mpa, water absorption rate 7-8% the light coarse aggregate of broken stone type, choosing particle diameter is 0-5mm, bulk density 1050～1150kg/m3, fineness chooses the light fine aggregate of gangue of 2.8-4.0.
(2) the light coarse aggregate 41-44% of broken stone type gangue
The light fine aggregate 23.5～26% of gangue
Cement 425
#17.2～20%
Water 0.13～13.3%
The coal gangue concrete preparation is produced, coal gangue concrete that above-mentioned formulated is good stirs---formwork---inject steel plate hot-die pedestal on an empty stomach---Sunken wire tube, line box, give box out, post mouth mould---the bottom concrete vibrates, the coal gangue concrete preparation is produced at empty stomach steel plate hot-die pedestal and is done-hydrothermal curing 80 ℃-95 ℃ of constant temperature battery limit temperatures.Coal gangue concrete churning time 〉=180 second, the slump is 30-50mm.Coal gangue concrete is in 4～6 hours precuring time of empty stomach steel plate hot-die pedestal, 20 ℃～30 ℃ of temperature, relative intensity 20-30%, the precuring process improves the concrete structure initial strength, enhancing reduces concrete cubic deformation greatly to the resistivity of structure deteriorate; Coal gangue concrete is in 3～4 hours intensification battery limit (BL) time of empty stomach steel plate hot-die pedestal, heat up 15 ℃-20 ℃/hour, relative intensity 40-50%, this process plastic covering film is in advance preserved moisture, this moment, steam entered heat conduction chamber circulation heating steel plate hot-die body by main line steam vent exhaust vapour, and hot-die conducts heat, good heat conductivity, hydrated reaction of cement speeds up in temperature-rise period, finishes to have obtained certain hardening strength to heating up.Coal gangue concrete is 4～6 hours constant temperature battery limit (BL) time of the hot pedestal of steel plate on an empty stomach, 80 ℃～95 ℃ of temperature, and relative intensity reaches 70-90%; Coal gangue concrete is 3～4 hours in the cooling battery limit (BL) time of empty stomach steel plate hot-die pedestal, cooling rate≤20 ℃～25 ℃/hour, and member envrionment temperature≤30 ℃ after the demoulding, cooling rate is unsuitable excessive, avoids excessive temperature differentials, mass defect occurs.The coal gangue concrete products strength grade is CL
15, CL
20, CL
25, CL
30
Example one
By weight (in 1 cubic metre of concrete), get the light coarse aggregate 960kg of coal gangue, the light fine aggregate 545kg of coal gangue, cement (Portland cement 425
#) 365kg, water 280kg, water cement ratio 0.49 is through fully stirring 180 seconds, pour into the bottom surface and be empty stomach steel plate table top, all around in the mould that combines by angle steel, vibrate, wipe one's face, press polish, do-hydrothermal curing, through precuring, intensification, constant temperature, four battery limit (BL)s of cooling, rose in 24 hours and hang out the pond, promptly get whole floor of coal gangue concrete, its ultimate compression strength is 16.8MPa, reaches 84% of design label.
Example two
By weight (in 1 cubic metre of concrete), take by weighing the light coarse aggregate 950kg of coal gangue, coal gangue 550kg, cement (trass cement 425
#) 370kg, water 280kg, water cement ratio 0.48 after fully stirring, pours in the mould, vibrate, wipe one's face, press polish, do-hydrothermal curing, through precuring, intensification, constant temperature, four battery limit (BL)s of cooling, went out the pond in 24 hours, obtain whole floor goods of coal gangue concrete, ultimate compression strength reaches 17.0MPa, reaches 85% of design label
Example three
By weight (in 1 cubic metre of concrete), get the light coarse aggregate 875kg of coal gangue, the light fine aggregate 525kg of coal gangue, cement (trass cement 425
#420kg, water 280kg, water cement ratio 0.43, in stirring pours into mould, vibration compacting, wipe one's face, press polish, do-hydrothermal curing, through precuring, intensification, constant temperature, four battery limit (BL)s of cooling, went out the pond in 24 hours, obtain whole floor goods of coal gangue, recording ultimate compression strength is 22.3MPa, reaches 89% of design label.
Example four
Produce whole stair goods by weight (in 1 cubic metre of concrete), press water cement ratio 0.48, get the light coarse aggregate 955kg of coal gangue, the light fine aggregate 550kg of coal gangue, cement (Portland cement 425
#) 370kg, water 280kg stirred 180 seconds through stirrer, pour in the whole punching block, earlier use the vibrating spear vibration compacting, smear with wood again and clap, wipe one's face with iron, the band mould is done-hydrothermal curing, through precuring, intensification, constant temperature, four battery limit (BL)s of cooling, the lifting demoulding in 24 hours obtains whole stair, ultimate compression strength is 20.6MPa, reaches design label 103%.
Example five
By weight (in 1 cubic metre of concrete), get the light coarse aggregate 950kg of coal gangue, the light fine aggregate 540kg of coal gangue, cement (trass cement 425
#) 375kg, water 280kg, water cement ratio 0.48 mix to stir and to pour in the integral plate, through vibrate, troweling, pressure surface, then do-hydrothermal curing, through precuring, intensification, constant temperature, four battery limit (BL)s of cooling, the lifting demoulding in 24 hours promptly gets whole stair, its intensity can reach 19.8MPa, reaches design label 99%.
Example six
Production intensity grade C
30Staircase component by weight (in 1 cubic metre of concrete), is got cement (425
#Portland cement) 465kg, the light coarse aggregate 860kg of coal gangue, the light fine aggregate 495kg of coal gangue, water 280kg, water cement ratio 0.39, through fully stir, go into mould, vibrate, wipe one's face, press polish, it is steam-cured to change in the kiln band mould over to, do-hydrothermal curing, through precuring, intensification, constant temperature, four battery limit (BL)s of cooling, went out the pond demoulding in 24 hours, obtain whole stair goods, its intensity reaches 30.5mpa, reaches design label 92%.
Example seven
Coal gangue concrete balcony slab by weight (calculating with 1 cubic metre of concrete), takes by weighing the light coarse aggregate 953kg of coal gangue, the light fine aggregate 552kg of coal gangue, cement (425
#Portland cement) 365kg, water 280kg, water cement ratio 0.49 mixes fully and stirred 180 seconds, then pours in the mould, with vibrating spear, flat board vibrate jolt ramming, wipe one's face, the lid plastic film does-and hydrothermal curing is through precuring, intensification, constant temperature, four battery limit (BL)s of cooling, rises in 24 hours to hang out the pond, is coal gangue concrete balcony slab, recording ultimate compression strength is 18.4MPa, reaches design label 92%.
Example eight
Produce coal gangue concrete balcony slab, the mountain ash concrete (425 of getting fire by weight (in 1 cubic metre of concrete)
#) 370kg, the light coarse aggregate 960kg of coal gangue, the light fine aggregate 540kg of coal gangue, add water 280kg, water cement ratio 0.48 pours in the mould vibration compacting through mixing stirring after 80 seconds, wipe one's face, do-hydrothermal curing,, went out the pond and lift by crane in 24 hours through precuring, intensification, constant temperature, four battery limit (BL)s of cooling, obtain coal gangue concrete balcony slab, its ultimate compression strength reaches 17.6MPa and reaches design label 88%.
Example nine
By weight (in 1 cubic metre of concrete), take by weighing the light coarse aggregate 870kg of coal gangue, the light fine aggregate 530kg of coal gangue, cement 420kg (425
#Portland cement), add water 280kg, water cement ratio 0.43 mixes and produces the balcony slab goods, pours in the mould after stirring 180 seconds, vibrate, clap, wipe one's face, do-hydrothermal curing, through precuring, intensification, constant temperature, four battery limit (BL)s of cooling, worked to hang out the pond in 24 hours, promptly get coal gangue concrete balcony slab, ultimate compression strength 23.6MPa reaches design label 94%.
Technical performance index
| The design strength grade of concrete | Observed strength grade MPa | | Unit dry weight kg/cm3 | Water-intake rate % | Freeze proof label |
| ??CL15 ??CL20 ??CL25 ??CL30 | ????16.3 ????22.9 ????28.6 ????32.1 | ????1.60 ????1.76 ????2.10 ????2.69 | ??1632 ??1890 ??1910 ??1940 | ????9.2 ????8.0 ?????- ????6.8 | ????＞M50 ????＞M50 ????＞M50 ????＞M50 |
Utilize self-igniting coal gangue to manufacture the coal gangue goods by empty stomach steel plate hot-die pedestal production technique, all better from heavy and light, weather resistance, thermotolerance, frost resistance, concrete strength grade reaches CL
15, CL
20, CL
25, CL
30The design label can be made members such as whole floor of concrete, balcony slab, bench, beam, trench plate.
Claims (8)
1, the coal gangue concrete products of the light coarse aggregate of a kind of coal gangue by cement, granulation, light fine aggregate, water, reinforcing bar preparation is characterized in that main ingredient is:
(1) choosing particle diameter is 5-30mm, tap density 1100～1200kg/m
2, cylindrical compress strength 7-8MPa, water-intake rate 7-8% the light coarse aggregate of broken stone type, choosing particle diameter is 0-5mm, tap density 1050～1150kg/m
3, fineness modulus chooses the light fine aggregate of coal gangue of 2.8-4.0.
(2) the light coarse aggregate 41-44% of broken stone type coal gangue
The light fine aggregate 23.5～26% of coal gangue
Cement 425
#17.2～20%
Water 0.13～13.3%
2, the coal gangue concrete preparation method of the light coarse aggregate of a kind of coal gangue, light fine aggregate, water, reinforcing bar preparation by cement, granulation; it is characterized in that coal gangue concrete prepares production and does-hydrothermal curing 80-95 ℃ of constant temperature battery limit temperature at empty stomach steel plate hot-die pedestal.
3, coal gangue concrete preparation method according to claim 2 is characterized in that coal gangue concrete churning time 〉=180 second, and the slump is 30-50mm.
4, coal gangue concrete preparation method according to claim 2 is characterized in that the precuring time 4～6 hour of coal gangue concrete at empty stomach steel plate hot-die pedestal, 20 ℃～30 ℃ of temperature, relative intensity 20～30%.
5, coal gangue concrete preparation method according to claim 2 is characterized in that coal gangue concrete intensification battery limit (BL) time 3-4 hour at empty stomach steel plate hot-die pedestal, heats up 15 ℃-20 ℃/hour relative intensity 40-50%.
6, coal gangue concrete preparation method according to claim 2 is characterized in that coal gangue concrete constant temperature battery limit (BL) time 4-6 hour at empty stomach steel plate hot-die pedestal, temperature 80-95 ℃, and relative intensity 70-90%.
7, coal gangue concrete preparation method according to claim 2 is characterized in that coal gangue concrete is 3～4 hours in the cooling battery limit (BL) time of empty stomach steel plate hot-die pedestal, cooling rate≤20-25 ℃/hour, and member envrionment temperature≤30 ℃ after the demoulding.
8, coal gangue concrete preparation method according to claim 2 is characterized in that the coal gangue concrete products strength grade is CL
15, CL
20, CL
25, CL
30
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96115369A CN1053647C (en) | 1996-06-11 | 1996-06-11 | Coal gangue concrete products and preparing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96115369A CN1053647C (en) | 1996-06-11 | 1996-06-11 | Coal gangue concrete products and preparing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1167738A true CN1167738A (en) | 1997-12-17 |
| CN1053647C CN1053647C (en) | 2000-06-21 |
Family
ID=5122633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96115369A Expired - Fee Related CN1053647C (en) | 1996-06-11 | 1996-06-11 | Coal gangue concrete products and preparing method thereof |
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| Country | Link |
|---|---|
| CN (1) | CN1053647C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101439951B (en) * | 2008-12-22 | 2011-06-08 | 朝阳华龙科建股份有限公司 | Digging gangue concrete |
| CN104591601A (en) * | 2015-01-23 | 2015-05-06 | 安徽理工大学 | Superpoly-gangue concrete and preparation method thereof |
| CN107417181A (en) * | 2017-07-13 | 2017-12-01 | 山西恒久安建筑科技有限公司 | Self-combusted gangue concrete interlayer floor |
| CN108383433A (en) * | 2018-04-17 | 2018-08-10 | 上海言诺建筑材料有限公司 | Composite material, preparation method and applications for 3D printing |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1016331B (en) * | 1988-12-11 | 1992-04-22 | 广州市建筑材料工业研究所 | The novel inorganic sound absorbent for building |
| CN1075302A (en) * | 1992-02-14 | 1993-08-18 | 黑龙江大学 | Produce the method for coagulant with coal gangue |
-
1996
- 1996-06-11 CN CN96115369A patent/CN1053647C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101439951B (en) * | 2008-12-22 | 2011-06-08 | 朝阳华龙科建股份有限公司 | Digging gangue concrete |
| CN104591601A (en) * | 2015-01-23 | 2015-05-06 | 安徽理工大学 | Superpoly-gangue concrete and preparation method thereof |
| CN107417181A (en) * | 2017-07-13 | 2017-12-01 | 山西恒久安建筑科技有限公司 | Self-combusted gangue concrete interlayer floor |
| CN108383433A (en) * | 2018-04-17 | 2018-08-10 | 上海言诺建筑材料有限公司 | Composite material, preparation method and applications for 3D printing |
| CN108383433B (en) * | 2018-04-17 | 2022-02-15 | 上海言诺建筑材料有限公司 | Composite material for 3D printing, preparation method and application thereof |
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| Publication number | Publication date |
|---|---|
| CN1053647C (en) | 2000-06-21 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |