CN100564305C - Coal gangue-fly ash foam concrete - Google Patents
Coal gangue-fly ash foam concrete Download PDFInfo
- Publication number
- CN100564305C CN100564305C CNB2007100930231A CN200710093023A CN100564305C CN 100564305 C CN100564305 C CN 100564305C CN B2007100930231 A CNB2007100930231 A CN B2007100930231A CN 200710093023 A CN200710093023 A CN 200710093023A CN 100564305 C CN100564305 C CN 100564305C
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- CN
- China
- Prior art keywords
- coal gangue
- foam concrete
- fly ash
- levigate
- wall
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
-
- 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)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Building Environments (AREA)
Abstract
A kind of coal gangue-fly ash foam concrete relates to light foam concrete.The present invention is made up of coal gangue, flyash, cement, lime, gypsum, filler and whipping agent.The present invention utilizes coal gangue and flyash industrial waste, and this has not only reduced product cost but also saved natural resources, characteristics such as its product has also that cost is low, intensity is high, thermal conductivity is low, heat-proof quality is good, directly plaster after building by laying bricks or stones.Therefore, product of the present invention can be widely used in the single heat-preserving wall (wall self-insulation is heat insulation) of exterior wall, the partition of skeleton construction, the back board wall of big built-in wardrobe; The fire-proof sound insulation of interior wall, thermofin; The freezer interior wall; The heat insulating layer of flooring, roofing; In the heat insulating sheet material.
Description
Technical field
The invention belongs to the light building material technical field, particularly light foam concrete.
Background technology
Along with the enforcement of China's wall reform and building energy conservation policy, the material that require to use in the modern architecture has lightweight, high-strength, insulation, heat insulation, sharp performance such as useless, energy-conservation.Foamed concrete possesses above-mentioned performance as a kind of novel material of construction, uses increasingly extensive in modern construction engineering.Existing foamed concrete, as publication number is CN1824623A " foamed concrete material and application thereof " patent, and disclosed component and proportioning are: inorganic coagulation material cement: filler stone flour or breeze: whipping agent: the weight ratio of water is 30～60: 30～60: 0.5～2: 20～50.And for example publication number is " non-steam cured foamed concrete plate " patent of CN1261600A, disclosed component and proportioning are: 40～60 parts of inorganic coagulation material low alkali cements, 25～40 parts in filler flyash, 0.4～0.7 part of fiber, 1.8～3 parts of whipping agents, other adds water, water is 50～500: 100 with above-mentioned each component total amount ratio, and the processing method of walling is made sheet material routinely.Mainly there is following shortcoming in existing foamed concrete: (1) prepares the used sophisticated gelling material overwhelming majority of foamed concrete at present is Portland cement, magnesium oxide and magnesium chloride solution, and the cost of gelling material is higher; (2) thermal conductivity is higher, general 300～500kg/m
3The thermal conductivity of foamed concrete at 0.08～0.186W/ (mK), heat-proof quality is bad; (3) intensity of foamed concrete is not high, 300～500kg/m
3The requirement of strength of the inaccessible materials for wall of foamed concrete.Therefore, how seeking cheap gelling material substitutes or the part portland cement replacement, magnesium oxide and magnesium chloride solution, reduce the foamed concrete cost, and the thermal conductivity that how to reduce foamed concrete, improving the intensity of foamed concrete, is to develop the light building material urgent problem at present.
Summary of the invention
The objective of the invention is weak point, a kind of coal gangue-fly ash foam concrete is provided at existing foamed concrete.But the existing cost of this material is low, intensity is high, thermal conductivity is low, heat-proof quality is good, the characteristics such as cast-in-site of directly plastering after building by laying bricks or stones; can make full use of coal gangue waste and flyash again; save cement; play energy-saving and emission-reduction; the effect of protection environment meets the social sustainable development strategic demand.
The technical scheme that realizes the object of the invention is: a kind of component and weight percentage of coal gangue-fly ash foam concrete are as follows:
Coal gangue: 0.6～63.6% flyash: 6.4～29.4%
Cement: 20～30% lime: 5～30%
Gypsum: 2～9% fillers: 0～30%
Whipping agent: 0.5～2.5%
Wherein: coal gangue is calcining, colliery powder after levigate; Flyash is I level or II level or III level flyash; Cement is ordinary Portland cement; Lime is fine grinding quicklime; Gypsum is the common building gypsum; Filler is a levigate sand etc.
After the present invention adopts said components, mainly contain following characteristics:
1, foamed concrete of the present invention is the useless light material of a kind of profit, the weight of calcining coal gangue powder and flyash accounts for 30%～70% in the material, can be good at having utilized the total heaped measure in the whole nation to surpass this industrial waste of coal gangue of 4,500,000,000 tons, both reduced product cost, save natural resources again, satisfied the requirement of the relevant building materials development of country.
2, the thermal conductivity of coal gangue of the present invention-fine coal foamed concrete all requires the thermal conductivity that reaches less than the existing national standard of other building block of each densimetric fraction.
3, density is 449kg/m
3The thermal conductivity of coal gangue-fine coal foamed concrete only be 0.086W/ (mK), also little more a lot of than national standard to the required value (≤0.10W/ (mK)) of the thermal conductivity of B03 level building block, but ultimate compression strength is much larger than than the requirement of strength value (1.0MPa) of national standard to the building block of B03 level, can under the situation of the thickness that reduces body of wall greatly, just can reach the requirement of country energy-conservation 65%, also can under the constant situation of floor area of building, increase the interior space.
4, density is 300kg/m
3Coal gangue-fine coal foamed concrete have extremely low thermal conductivity (0.056W/ (mK)), can be used to substitute present widely used polyphenyl foam plate, because this coal gangue-fine coal foamed concrete cost is low, it is again inorganic product, good weatherability, and the bonded mortar between body of wall can not must add rubber powder, the surface mortar also can reduce the consumption of rubber powder greatly, the cost of adhesive mortar and plastering mortar is reduced greatly, be used to do external wall insulation comprehensive cost is reduced greatly, and resistivity against fire is also considerably beyond the polyphenyl foam plate.
5, density is 550kg/m
3, 700kg/m
3And 700kg/m
3Coal gangue-fine coal foamed concrete, have lower thermal conductivity and ultimate compression strength, be the heat insulation good material of roof heat insulation, and the cost of these coal gangues-fine coal foamed concrete is low, can cast-in-site, and do not need special use to touch tool, facility investment is few, and speed of application is fast, is combined with base material.
6, product of the present invention can be widely used in the single heat-preserving wall (wall self-insulation is heat insulation) of exterior wall, the partition of skeleton construction, the back board wall of big built-in wardrobe; The fire-proof sound insulation of interior wall, thermofin; The freezer interior wall; The heat insulating layer of flooring, roofing; In the heat insulating sheet material.
Embodiment
Further specify the present invention below in conjunction with embodiment.
Embodiment 1
A kind of component of coal gangue-fly ash foam concrete and weight percentage are:
Calcining, the colliery powder 63.6% I level flyash 6.4% after levigate
Ordinary Portland cement 10% fine grinding quicklime 17.5%
Common building gypsum 2% levigate sand filler 0%
Whipping agent 0.5%.
Embodiment 2
A kind of component of coal gangue-fly ash foam concrete and weight percentage are:
Calcining, the colliery powder 0.6% II level flyash 29.4% after levigate
Ordinary Portland cement 30% fine grinding quicklime 30%
Common building gypsum 9% levigate sand filler 0%
Whipping agent 1.0%.
Embodiment 3
A kind of component of coal gangue-fly ash foam concrete and weight percentage are:
Calcining, the colliery powder 52.5% III level flyash 7.5% after levigate
Ordinary Portland cement 20% fine grinding quicklime 5%
Common building gypsum 3% levigate sand filler 10.5%
Whipping agent 1.5%.
Embodiment 4
A kind of component of coal gangue-fly ash foam concrete and weight percentage are:
Calcining, the colliery powder 33.3% II level flyash 6.7% after levigate
Ordinary Portland cement 15% fine grinding quicklime 10%
Common building gypsum 3% levigate sand filler 30%
Whipping agent 2.0%.
Embodiment 5
A kind of component of coal gangue-fly ash foam concrete and weight percentage are:
Calcining, the colliery powder 37.5% I level flyash 12.5% after levigate
Ordinary Portland cement 10% fine grinding quicklime 10%
Common building gypsum 7.5% levigate sand filler 20%
Whipping agent 2.5%.
Test-results
Coal gangue-fly ash foam concrete with present embodiment 1～5, carried out dried apparent density, 28d ultimate compression strength and thermal conductivity by the method for " lightweight aggregate concrete technology rules " JGJ51-2002 and " building mortar basic performance tests method " JGJ 70-90 and detected, detected result is as follows:
| Embodiment | 5 | 4 | 3 | 2 | 1 |
| Do apparent density (kg/m 3) | 300 | 449 | 550 | 700 | 760 |
| 28d ultimate compression strength (MPa) | 0.4 | 2.3 | 4.5 | 7.0 | 7.8 |
| Thermal conductivity (W/ (mK)) | 0.056 | 0.086 | 0.100 | 0.125 | 0.126 |
| Embodiment | 5 | 4 | 3 | 2 | 1 |
| Do apparent density (kg/m 3) | 300 | 449 | 550 | 700 | 760 |
| 28d ultimate compression strength (mpa) | 0.4 | 2.3 | 4.5 | 7.0 | 7.8 |
| Thermal conductivity (W/ (mK)) | 0.056 | 0.086 | 0.100 | 0.125 | 0.126 |
From above-mentioned detected result as can be known:
(1) 449kg/m
3The thermal conductivity of coal gangue-fine coal foamed concrete only be 0.086W/ (mK), also little more a lot of than national standard to the required value (≤0.10W/ (mK)) of the thermal conductivity of B03 level building block, but ultimate compression strength is much larger than the requirement of strength value (1.0MPa) of national standard to the building block of B03 level, can under the situation of the thickness that reduces body of wall greatly, just can reach the requirement of country energy-conservation 65%, also can under the constant situation of floor area of building, increase the interior space.
(2) density is 300kg/m
3Coal gangue fine coal foamed concrete have extremely low thermal conductivity (0.056W/ (mK)), can be used to substitute present widely used polyphenyl foam plate, because this coal gangue-fine coal foamed concrete cost is low, be inorganic product, good weatherability, and the bonded mortar between body of wall can not must add rubber powder, the surface mortar also can reduce the consumption of rubber powder greatly, the cost of adhesive mortar and plastering mortar is reduced greatly, be used to do external wall insulation comprehensive cost is reduced greatly, and resistivity against fire is also considerably beyond the polyphenyl foam plate.
(3) density is 550kg/m
3, 700kg/m
3And 760kg/m
3Coal gangue-fine coal foamed concrete also have lower thermal conductivity and and high compression strength, it is the heat insulation good material of roof heat insulation, and the cost of these coal gangues-fine coal foamed concrete is low, can cast-in-site, do not need special use to touch tool, less investment, speed of application is fast, is combined with base material.
Claims (6)
1. coal gangue-fly ash foam concrete is characterized in that its component and weight percentage are:
Coal gangue: 0.6～63.6% flyash: 6.4～29.4%
Cement: 20～30% lime: 5～30%
Gypsum: 2～9% fillers: 0～30%
Whipping agent: 0.5～2.5%
Wherein: coal gangue is calcining, colliery powder after levigate; Flyash is I level or II level or III level flyash; Cement is ordinary Portland cement; Lime is fine grinding quicklime, and gypsum is the common building gypsum, and filler is levigate sand.
2. according to the described coal gangue-fly ash foam concrete of claim 1, it is characterized in that a kind of component of coal gangue-fly ash foam concrete and weight percentage are:
Calcining, the colliery powder 63.6% I level flyash 6.4% after levigate
Ordinary Portland cement 10% fine grinding quicklime 17.5%
Common building gypsum 2% levigate sand filler 0%
Whipping agent 0.5%.
3. according to the described coal gangue-fly ash foam concrete of claim 1, it is characterized in that a kind of component of coal gangue-fly ash foam concrete and weight percentage are:
Calcining, the colliery powder 0.6% II level flyash 29.4% after levigate
Ordinary Portland cement 30% fine grinding quicklime 30%
Common building gypsum 9% levigate sand filler 0%
Whipping agent 1.0%.
4. according to the described coal gangue-fly ash foam concrete of claim 1, it is characterized in that a kind of component of coal gangue-fly ash foam concrete and weight percentage are:
Calcining, the colliery powder 52.5% III level flyash 7.5% after levigate
Ordinary Portland cement 20% fine grinding quicklime 5%
Common building gypsum 3% levigate sand filler 10.5%
Whipping agent 1.5%.
5. according to the described coal gangue-fly ash foam concrete of claim 1, it is characterized in that a kind of component of coal gangue-fly ash foam concrete and weight percentage are:
Calcining, the colliery powder 33.3% II level flyash 6.7% after levigate
Ordinary Portland cement 15% fine grinding quicklime 10%
Common building gypsum 3% levigate sand filler 30%
Whipping agent 2.0%.
6. according to the described coal gangue-fly ash foam concrete of claim 1, it is characterized in that a kind of component of coal gangue-fly ash foam concrete and weight percentage are:
Calcining, the colliery powder 37.5% I level flyash 12.5% after levigate
Ordinary Portland cement 10% fine grinding quicklime 10%
Common building gypsum 7.5% levigate sand filler 20%
Whipping agent 2.5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100930231A CN100564305C (en) | 2007-11-22 | 2007-11-22 | Coal gangue-fly ash foam concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100930231A CN100564305C (en) | 2007-11-22 | 2007-11-22 | Coal gangue-fly ash foam concrete |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101182175A CN101182175A (en) | 2008-05-21 |
| CN100564305C true CN100564305C (en) | 2009-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2007100930231A Expired - Fee Related CN100564305C (en) | 2007-11-22 | 2007-11-22 | Coal gangue-fly ash foam concrete |
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Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101439950B (en) * | 2008-12-19 | 2011-12-28 | 中国科学院武汉岩土力学研究所 | Flexible coal powder foam concrete and preparation thereof |
| CN101439952B (en) * | 2008-12-22 | 2011-08-10 | 朝阳华龙科建股份有限公司 | Coal gangue concrete and preparation thereof |
| CN102249403B (en) * | 2011-05-05 | 2013-05-08 | 江苏大学 | Method for preparing modified coal gangue-pulverized fuel ash composite filling for purifying sewage |
| CN102432266A (en) * | 2011-09-01 | 2012-05-02 | 山发寿 | Manufacture method and application of baking-free coal gangue concrete |
| CN102493593A (en) * | 2011-12-15 | 2012-06-13 | 重庆海丰建设集团有限公司 | Gangue foam concrete building block for realizing self heat insulation of walls |
| CN102701682B (en) * | 2012-06-29 | 2014-02-26 | 江苏建华管桩有限公司 | Pump concrete, pump concrete precast pile and production methods of pump concrete and pump concrete precast pile |
| CN103771817B (en) * | 2012-10-24 | 2016-05-18 | 同济大学 | A kind of desulfurated plaster foam concrete and preparation method thereof |
| CN103304208B (en) * | 2013-05-30 | 2014-11-26 | 重庆建工住宅建设有限公司 | Coal gangue mortars and preparation method thereof |
| CN103449837B (en) * | 2013-08-10 | 2015-05-27 | 安徽理工大学 | Mining foam paste filling material prepared by utilizing synergistic foaming method and preparation method thereof |
| CN103601451A (en) * | 2013-12-04 | 2014-02-26 | 海南大学 | High-strength impervious foam concrete prepared by solar energy curing |
| CN103803878A (en) * | 2013-12-27 | 2014-05-21 | 苏州市兴邦化学建材有限公司 | Low-cost concrete and preparation process thereof |
| CN104402500A (en) * | 2014-11-04 | 2015-03-11 | 张桂华 | Lightweight concrete |
| CN105294155B (en) * | 2015-12-06 | 2018-05-29 | 西安科技大学 | A kind of method that foam concrete is prepared using gangue |
| CN106966669B (en) * | 2015-12-30 | 2019-08-09 | 重庆朝国混凝土有限责任公司 | A kind of foam concrete and preparation method thereof |
| CN109133683B (en) * | 2018-08-16 | 2020-07-31 | 山东大学 | Comprehensive and integrated utilization method of coal gangue |
| CN111233408B (en) * | 2020-03-19 | 2022-05-06 | 河南理工大学 | Coal gangue chemical foaming concrete and preparation method thereof |
| CN111377667A (en) * | 2020-04-03 | 2020-07-07 | 沈阳促晋科技有限公司 | Multi-solid-waste wall foam concrete heat-insulation building block and preparation method thereof |
| CN112321249B (en) * | 2020-09-24 | 2022-02-01 | 中交武汉港湾工程设计研究院有限公司 | Coal gangue based foam light soil and preparation method thereof |
| CN112876143A (en) * | 2021-01-04 | 2021-06-01 | 衡东华宇商砼搅拌有限公司 | Self-heat-preservation high-strength environment-friendly concrete and preparation method thereof |
| CN113200762A (en) * | 2021-04-26 | 2021-08-03 | 海南七武海科技有限公司 | Capsule type composite thermal insulation material and preparation method thereof |
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| CN101182175A (en) | 2008-05-21 |
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