CN101921095A - Environment-friendly high-strength construction waste autoclaved brick and production method thereof - Google Patents

Environment-friendly high-strength construction waste autoclaved brick and production method thereof Download PDF

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Publication number
CN101921095A
CN101921095A CN2010102655404A CN201010265540A CN101921095A CN 101921095 A CN101921095 A CN 101921095A CN 2010102655404 A CN2010102655404 A CN 2010102655404A CN 201010265540 A CN201010265540 A CN 201010265540A CN 101921095 A CN101921095 A CN 101921095A
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CN
China
Prior art keywords
construction waste
brick
friendly
environment
waste
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Pending
Application number
CN2010102655404A
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Chinese (zh)
Inventor
全峰
朱钒
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MA ANSHAN KEDA INDUSTRIAL Co Ltd
Keda Industrial Co Ltd
Original Assignee
MA ANSHAN KEDA INDUSTRIAL Co Ltd
Keda Industrial Co Ltd
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Publication date
Application filed by MA ANSHAN KEDA INDUSTRIAL Co Ltd, Keda Industrial Co Ltd filed Critical MA ANSHAN KEDA INDUSTRIAL Co Ltd
Priority to CN2010102655404A priority Critical patent/CN101921095A/en
Publication of CN101921095A publication Critical patent/CN101921095A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/18Compositions 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
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Abstract

The invention discloses an environment-friendly high-strength construction waste autoclaved brick and a production method thereof. The production method comprises the following steps: proportioning construction waste, cement and quicklime, mixing with water, standing, rolling, forming and curing in an autoclave. The brick comprises the following components in percentage by mass: 85-92% of construction waste, 0-5% of cement and 8-10% of quicklime. The construction waste is crushed and screened to obtain the powder the particle size of which is smaller than 3 mm; the effective CaO content of the quicklime is greater than or equal to 60%; and the screen residues of a hole sizer of 0.08 mm is smaller than or equal to 15%. The strength of the waste autoclaved brick exceeds the related standard requirements in Chinese Standard MU15; the autoclaved brick has the advantages of good quality, simple production method and environmental protection, uses more than 85% of construction waste, and is suitable for large-scale industrial production.

Description

A kind of environment-friendly high-strength construction waste autoclaved brick and production method thereof
Technical field
The present invention is a kind of method of effectively utilizing of building waste, is specifically related to a kind of environment-friendly high-strength construction waste autoclaved brick and production method thereof, belongs to the environmental-friendly construction material technical field.
Background technology
Protection land resources is important fundamental state policy of China; China's per capita area of cultivated farmland is less than 2/5 of world average level; per capita area of cultivated farmland is 0.09 hectare; and conventional clay production will consume the land resources of a large amount of preciousnesses; aggravation is to the pressure of ecotope, and has a strong impact on the Sustainable development of economic society.Therefore, by eliminating clay brick, the development novel wall material, make full use of industrial solid wastes, building waste, can optimize building materials industry effectively, development " green industry " promotes resource, environment, social development coordinated development, realizes the organic unity of economic benefit, social benefit, ecological benefits.
Building waste is meant the solid waste that produces in construction at buildings or structures, maintenance, the demolishing process.At present, the quantity of China's building waste has accounted for the 30%-40% of municipal wastes total amount.Standard with 500-600 ton/ten thousand square metre calculates that to the year two thousand twenty, China also will increase about 30,000,000,000 square metres of floor area of building newly, and the new building waste that produces will be a shocking numeral.Yet, overwhelming majority building waste is without any processing, just transported to countryside or rural area by unit in charge of construction, air storage or landfill, consume pork barrels such as a large amount of land acquisitions takes, refuse collection expense, simultaneously, clear with stacking process in drop with problems such as dust, sand-lime fly upward and caused the serious environmental pollution again.Press building brick with being used for producing after the screening of depleted construction waste crushing steaming, replace traditional sintered clay brick at present, both reached and reduced ecological resources destructive purpose, reach the purpose of made from construction refuse resource recycle, minimizing environmental pollution again, have good society, economy, environmental benefit.
The complicated cost of existing building refuse brick or building block production technology process is too high, and the building waste utilization ratio is low, and is of low quality, and these have all limited its market application foreground.A kind of building refuse brick and manufacture method thereof are disclosed as Chinese patent application 200510011401, it is made up of building waste major ingredient and caking agent auxiliary material, described building waste major ingredient is waste concrete, useless brick and tile, useless mortar sheet, useless sandy soil, its particle diameter waste concrete≤15 millimeter, useless brick and tile≤10 millimeters, mortar sheet or useless sandy soil≤3 millimeter; Described caking agent is metasilicate sintering material, breeze, flying dust, gypsum, promotor, toughener, thinner, its particle diameter≤0.1 millimeter; The ratio of weight and number of described major ingredient and caking agent auxiliary material is 4~5: 1; Can choose wantonly wherein a kind of or several by arbitrary proportion in the described major ingredient; The weight ratio of described auxiliary material each component is: metasilicate sintering material 50~80%, breeze 5~30%, flying dust 5~30%, gypsum 5~10%, promotor 1~3%, toughener 1~3%, thinner 0.1~0.5%, send into shaper moulding after being mixed evenly to building waste and caking agent, under the natural condition maintenance 3-10 days.This building refuse brick feed composition complexity, the intensity of product is low, is unsuitable for large-scale industrial production and use.
Summary of the invention
Purpose of the present invention is exactly the problems referred to above that exist at prior art, provides that a kind of intensity reaches the relevant above standard-required of GB MU15, quality is good, technological process is simple, is suitable for the environment-friendly high-strength construction waste autoclaved brick of large-scale industrial production.
Another object of the present invention provides the production method of above-mentioned environment-friendly high-strength construction waste autoclaved brick.
For realizing above-mentioned purpose of the present invention, a kind of environment-friendly high-strength construction waste autoclaved brick of the present invention is realized by the following technical solutions.
A kind of environment-friendly high-strength construction waste autoclaved brick of the present invention is to be prepared from by building waste, cement, unslaked lime, and each component content (quality) scope is:
Building waste 85%-92%;
Cement 0-5%;
Unslaked lime 8%-10%;
Described construction waste crushing sieves into particle diameter less than the 3mm powder; Described unslaked lime effective CaO content 〉=60%, 0.08mm hole sizer tails over≤and 15%.
Described cement is No. 325 ordinary Portland cements.
Described building waste is a kind of or its mixture of useless common brick, discarded concrete, useless ceramic tile, waste mortar.
The present invention also provides a kind of production method of environment-friendly high-strength construction waste autoclaved brick, and it is to be undertaken by following technology, step:
1) burden process: prepare burden according to following component content (quality): building waste 85%-92%; Cement 0-5%; Unslaked lime 8%-10%.
Described construction waste crushing sieves into particle diameter less than the 3mm powder; Described unslaked lime effective CaO content 〉=60%, 0.08mm hole sizer tails over≤and 15%.
Described cement is No. 325 ordinary Portland cements.
2) adding water stirs: the ratio according to dry mix total mass 12~14% adds water, makes it to mix by stirring.
3) clear up: the raw material that stirs enters to be cleared up the storehouse and reacts, and the reaction times is 2~3h.
4) rolling: material has been cleared up laggard road wheel and has been ground, and the material compacting degree is increased, and plasticity-strengthens, and the rolling time is 2~4min.
5) compression moulding: through the compound of above step process through automatic hydraulic press compression moulding, pressing pressure 20MPa.
The big I of adobe is changed by die size, standard brick size 240 * 115 * 53mm.
6) steam press maintenance: the autoclave steam press maintenance brick that gets product is advanced in the adobe that suppresses, and saturated-steam temperature is controlled at 175-180 ℃, and constant temperature time 5-7 hour, Best Times was 6 hours.
The present invention adopts above technical solution, has following advantage:
(1) the solid waste utilization of building refuse brick of the present invention is big, and the volume of building waste can reach about 90%, in the actual implementation process not admixture cement also can guarantee the high strength of finished bricks, technological process is simple, realizes suitability for industrialized production easily.
(2) the present invention adopts automatic hydraulic press compression moulding, brick body degree of compactness height, and the shape of brick body can realize by mold exchange more, can be solid brick and Brick with blind hole.
(3) the present invention adopts steam press maintenance, guarantees quality of item, saves the production cycle.
(4) the whole technical indicators of building refuse brick of the present invention all meet or exceed the standard of JC/T422-2007 " non-sintering rubbish tailing-bricks " MU15.
Description of drawings
Fig. 1 is the technological process of production figure of a kind of environment-friendly high-strength construction waste autoclaved brick of the present invention.
Embodiment
For further describing the present invention, a kind of environment-friendly high-strength construction waste autoclaved brick of the present invention and production method thereof are further described below in conjunction with drawings and Examples.
Technological process of production figure by a kind of environment-friendly high-strength construction waste autoclaved brick of the present invention shown in Figure 1 finds out, a kind of environment-friendly high-strength construction waste autoclaved brick of the present invention be by feed proportioning, mix stir, clear up ageing, roll mixing, compression moulding, steam press maintenance, finished product stacks explained hereafter and forms.
Embodiment 1:
The proportioning raw materials of this example is by mass percentage:
Building waste: 85%
Cement: 5%
Unslaked lime: 10%
Construction waste crushing sieves into particle diameter less than the 3mm aggregate.Enter stirrer according to the said ratio batching and stir, add 13% (accounting for dry mix total mass per-cent) moulding water simultaneously, the compound that stirs is cleared up the laggard road wheel of 3h and is ground rolling time 3min; Material behind the rolling advances the compression moulding of KDQ1300 automatic hydraulic press, pressing pressure 20MPa, adobe size 240 * 115 * 53mm; Formed green brick is sent into the autoclave steam press maintenance, and saturated-steam temperature is controlled at 175 ℃, constant temperature 6h; Promptly obtain finished bricks after steam-cured.
The every technical indicator of construction waste autoclaved brick in this example reaches the standard of JC/T 422-2007 " non-sintering rubbish tailing-bricks " MU25.
Embodiment 2:
The proportioning raw materials of this example is by mass percentage:
Building waste: 90%
Unslaked lime: 10%
Construction waste crushing sieves into particle diameter less than the 3mm aggregate.Enter stirrer according to the said ratio batching and stir, add 13% (accounting for dry mix total mass per-cent) moulding water simultaneously, the compound that stirs is cleared up the laggard road wheel of 3h and is ground rolling time 3min; Material behind the rolling advances the compression moulding of KDQ1300 automatic hydraulic press, pressing pressure 20MPa, adobe size 240 * 115 * 53mm; Formed green brick is sent into the autoclave steam press maintenance, and saturated-steam temperature is controlled at 180 ℃, constant temperature 6h; Promptly obtain finished bricks after steam-cured.
The every technical indicator of construction waste autoclaved brick in this example reaches the standard of JC/T 422-2007 " non-sintering rubbish tailing-bricks " MU20.
Embodiment 3:
The proportioning raw materials of this example is by mass percentage:
Building waste: 92%
Unslaked lime: 8%
Construction waste crushing sieves into particle diameter less than the 3mm aggregate.Enter stirrer according to the said ratio batching and stir, add 13% (accounting for dry mix total mass per-cent) moulding water simultaneously, the compound that stirs is cleared up the laggard road wheel of 3h and is ground rolling time 3min; Material behind the rolling advances the compression moulding of KDQ1300 automatic hydraulic press, pressing pressure 20MPa, adobe size 240 * 115 * 53mm; Formed green brick is sent into the autoclave steam press maintenance, and saturated-steam temperature is controlled at 180 ℃, constant temperature 6h; Promptly obtain finished bricks after steam-cured.
The every technical indicator of construction waste autoclaved brick in this example reaches the standard of JC/T 422-2007 " non-sintering rubbish tailing-bricks " MU15.

Claims (5)

1. an environment-friendly high-strength construction waste autoclaved brick is characterized in that it is to be prepared from by building waste, cement, unslaked lime, and each component content (quality) scope is:
Building waste 85%-92%;
Cement 0-5%;
Unslaked lime 8%-10%;
Described construction waste crushing sieves into particle diameter less than the 3mm powder; Described unslaked lime effective CaO content 〉=60%, 0.08mm hole sizer tails over≤and 15%.
2. a kind of environment-friendly high-strength construction waste autoclaved brick as claimed in claim 1 is characterized in that: described cement is No. 325 ordinary Portland cements.
3. a kind of environment-friendly high-strength construction waste autoclaved brick as claimed in claim 1 or 2 is characterized in that: described building waste is a kind of or its mixture of useless common brick, discarded concrete, useless ceramic tile, waste mortar.
4. the production method of an environment-friendly high-strength construction waste autoclaved brick is characterized in that it is to be undertaken by following technology, step:
1) burden process: prepare burden: building waste 85%-92%, cement 0-5%, unslaked lime 8%-10% according to following component content (quality); Described construction waste crushing sieves into particle diameter less than the 3mm powder, and described unslaked lime effective CaO content 〉=60%, 0.08mm hole sizer tails over≤and 15%;
2) adding water stirs: the ratio according to dry mix total mass 12~14% adds water, makes it to mix by stirring;
3) clear up: the raw material that stirs enters to be cleared up the storehouse and reacts, and the reaction times is 2~3h;
4) rolling: material has been cleared up laggard road wheel and has been ground, and the material compacting degree is increased, and plasticity-strengthens, and the rolling time is 2~4min;
5) compression moulding: through the compound of above step process through automatic hydraulic press compression moulding, pressing pressure 20MPa;
6) steam press maintenance: the autoclave steam press maintenance brick that gets product is advanced in the adobe that suppresses, and saturated-steam temperature is controlled at 175-180 ℃, constant temperature time 5-7 hour.
5. the production method of a kind of environment-friendly high-strength construction waste autoclaved brick as claimed in claim 4, it is characterized in that: described cement is No. 325 ordinary Portland cements, the constant temperature time in the steam press maintenance stage is 6 hours.
CN2010102655404A 2010-08-23 2010-08-23 Environment-friendly high-strength construction waste autoclaved brick and production method thereof Pending CN101921095A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103172326A (en) * 2013-03-21 2013-06-26 广西大学 Method for preparing MU5 regenerated solid brick by building waste
CN103896524A (en) * 2014-03-10 2014-07-02 山东建筑大学 Method for producing autoclaved bricks from artificial stone plate wastes
CN103922679A (en) * 2014-04-16 2014-07-16 浙江浦江江合新型建筑材料有限公司 Autoclaved sand-lime bricks manufactured by using building waste materials and crystal glass solid waste and manufacturing method thereof
CN104876519A (en) * 2014-04-17 2015-09-02 王长龙 Method for preparing autoclaved sand-lime brick from lead-zinc tailings and recycled concrete aggregate
CN105439521A (en) * 2015-11-24 2016-03-30 河南誉金技术服务有限公司 Method for preparing autoclaved bricks from silicone-series iron alloy dust
CN105837147A (en) * 2016-03-25 2016-08-10 刘建荣 Casting used sand composite brick and preparation method
CN108002754A (en) * 2017-11-13 2018-05-08 江苏中路工程技术研究院有限公司 Tail gas degradation-type environmental protection acoustic tile and preparation method thereof and tail gas degradation-type environmental protection sound barrier

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101306929A (en) * 2008-07-04 2008-11-19 华中科技大学 Autoclaved Brick from high content construction garbage and production process thereof
CN101734895A (en) * 2008-11-18 2010-06-16 福建工程学院 Process for producing regenerated building waste autoclaved brick

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101306929A (en) * 2008-07-04 2008-11-19 华中科技大学 Autoclaved Brick from high content construction garbage and production process thereof
CN101734895A (en) * 2008-11-18 2010-06-16 福建工程学院 Process for producing regenerated building waste autoclaved brick

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103172326A (en) * 2013-03-21 2013-06-26 广西大学 Method for preparing MU5 regenerated solid brick by building waste
CN103896524A (en) * 2014-03-10 2014-07-02 山东建筑大学 Method for producing autoclaved bricks from artificial stone plate wastes
CN103896524B (en) * 2014-03-10 2015-07-08 山东建筑大学 Method for producing autoclaved bricks from artificial stone plate wastes
CN103922679A (en) * 2014-04-16 2014-07-16 浙江浦江江合新型建筑材料有限公司 Autoclaved sand-lime bricks manufactured by using building waste materials and crystal glass solid waste and manufacturing method thereof
CN103922679B (en) * 2014-04-16 2016-03-30 浙江浦江江合新型建筑材料有限公司 A kind of autoclaved lime-sand brick utilizing construction waste and crystal glass solid waste to manufacture and preparation method thereof
CN104876519A (en) * 2014-04-17 2015-09-02 王长龙 Method for preparing autoclaved sand-lime brick from lead-zinc tailings and recycled concrete aggregate
CN104876519B (en) * 2014-04-17 2018-05-15 河北工程大学 A kind of Pb-Zn tailings and Aggregate of recycled concrete prepare autoclaved lime-sand brick method
CN105439521A (en) * 2015-11-24 2016-03-30 河南誉金技术服务有限公司 Method for preparing autoclaved bricks from silicone-series iron alloy dust
CN105837147A (en) * 2016-03-25 2016-08-10 刘建荣 Casting used sand composite brick and preparation method
CN108002754A (en) * 2017-11-13 2018-05-08 江苏中路工程技术研究院有限公司 Tail gas degradation-type environmental protection acoustic tile and preparation method thereof and tail gas degradation-type environmental protection sound barrier

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Address after: 243041 Anhui city in Ma'anshan province north of the revitalization of economic and Technological Development Zone, Road No. 555

Applicant after: Anhui Keda Electromechanical Co., Ltd.

Applicant after: Guangdong Keda Electromechanical Co., Ltd.

Address before: 243041 Anhui city in Ma'anshan province north of the revitalization of economic and Technological Development Zone, Road No. 555

Applicant before: Ma Anshan Keda Industrial Co., Ltd.

Applicant before: Guangdong Keda Electromechanical Co., Ltd.

C53 Correction of patent for invention or patent application
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Free format text: CORRECT: APPLICANT; FROM: MA ANSHAN KEDA INDUSTRIAL CO., LTD. TO: KEDA (MAS)INDUSTRIAL CO., LTD.

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Application publication date: 20101222

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