CN103664117A - Autoclaved fly ash-lime brick for severe cold arid area - Google Patents

Autoclaved fly ash-lime brick for severe cold arid area Download PDF

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Publication number
CN103664117A
CN103664117A CN201210355186.3A CN201210355186A CN103664117A CN 103664117 A CN103664117 A CN 103664117A CN 201210355186 A CN201210355186 A CN 201210355186A CN 103664117 A CN103664117 A CN 103664117A
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CN
China
Prior art keywords
brick
fly ash
autoclaved fly
gypsum
lime brick
Prior art date
Application number
CN201210355186.3A
Other languages
Chinese (zh)
Inventor
韦展艺
姜曙光
Original Assignee
石河子大学
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 石河子大学 filed Critical 石河子大学
Priority to CN201210355186.3A priority Critical patent/CN103664117A/en
Publication of CN103664117A publication Critical patent/CN103664117A/en

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Abstract

The invention relates to an autoclaved fly ash-lime brick for a severe cold arid area, belonging to the technical field of building materials. The preparation method comprises the following steps: mixing coal ash, acetylene sludge, broken bricks, washed sands and gypsum, and uniformly stirring; putting the mixed material into a slaking silos to digest; forming by a brick machine after being milled; and finally steaming in a still kettle. The autoclaved fly ash-lime brick has the beneficial effects of saving the land resources, preventing the environmental pollution and effectively utilizing industrial residues and building wastes secondarily; the autoclaved fly ash-lime brick is strong in heat preserving performance, less in air shrinkage value, high in strength, light in weight and low in cost, and the weight of a wall is effectively alleviated.

Description

Autoclaved fly ash brick for cold and dry area
Technical field:
The invention provides a kind of autoclaved fly ash brick that is applicable to cold and dry area, specifically take the autoclaved fly ash brick that flyash, carbide slag, broken brick, washed-out sand makes as main raw material(s), belong to building wall material technical field.
Technical background:
Autoclaved fly ash brick is a kind of new wall materials, is widely used in the inner, external wall of all kinds of covil construction, utilities building and industrial premises, and the basis in house.It is the product that substitutes sintered clay brick, in cold and dry area, (as the Northwest) is higher to the requirement of materials for wall, for autoclaved fly ash brick, not only intensity will meet the demands, its frost resistance, solidity to corrosion, dry shrinkage etc. all will meet the requirement of standard gauge definite value, yet the dry shrinkage at the existing autoclaved fly ash brick in cold and dry area has but had a strong impact on autoclaved fly ash brick promoting the use of in these areas, how controlling and improve the drying shrinkage of autoclaved fly ash brick, is the key issue that autoclaved fly ash brick is promoted the use of in these areas.
Summary of the invention:
In order to reduce the drying shrinkage value of autoclaved fly ash brick, can suitably increase aggregate ratio in batching, improve grating, improve steam pressure intensity etc.The object of the present invention is to provide a kind of autoclaved fly ash brick that is applicable to cold and dry area, it utilizes flyash and carbide slag, broken brick, washed-out sand and gypsum to make the materials for wall that is applicable to cold and dry area.Substituted clay brick, saved land resources, reduced the dust pollution of atmosphere, and made industrial residue and construction waste be able to second stage employ.
Technical scheme of the present invention is: for the autoclaved fly ash brick of cold and dry area, its mainly fill a prescription (parts by weight) are: flyash 30-55, carbide slag 15-30, broken brick 10-30, washed-out sand 10-25, gypsum 1-3.
Processing step is:
(1) after being mixed according to a certain ratio, flyash, carbide slag, broken brick, washed-out sand, gypsum and water stirs;
(2) compound is put into slaking silos and digest, the time is 4 hours;
(3) brick pressing machine moulding after rolling, finally enters autoclave 1.0Mpa-1.3Mpa, temperature 180-200 ℃, and steam pressure system is 2-8-2h.
Positively effect of the present invention is: saved land resources, prevented the pollution of the environment, made industrial residue and construction waste be able to second stage employ; Extremely efficient in preserving heat, the thermal conductivity of autoclaved fly ash brick is 0.43w/ (mk), and the thermal conductivity of solid clay brick is 0.81w/ (mk).Frost resistance is good, and freeze-thaw resistance freezes 5 hours the cold district of subzero 20-25 ℃, melt 3 hours, and after circulation 30 times, result shows that the mass loss rate after freezing is 0.8%, in more than 10 ℃ water in standard technique index≤2.0%; Actual measurement ultimate compression strength is 24.6-30.5Mpa, meets 10 mean value >=20.0Mpa, monolithic minimum value >=16.0Mpa; And ultimate compression strength after freezing is that 25.6Mpa meets 10 mean value >=16.0Mpa of standard technique index; Drying shrinkage is little, surveys to such an extent that the drying shrinkage value of autoclaved fly ash brick is 0.57mm/m, meet that standard technique requires≤0.75mm/m.Lightweight, weather resistance is strong and cost is low, weight is compared light 20% left and right with solid clay brick.
Embodiment:
Below in conjunction with embodiment, the invention will be further described:
Embodiment 1:
For the autoclaved fly ash brick of cold and dry area, its processing step is:
(1) by weight by flyash 38, carbide slag 24, broken brick 22, washed-out sand 15, stirs after gypsum 1 mixes;
(2) compound is put into slaking silos and digest, the time is 4 hours;
(3) after rolling, enter brick pressing machine moulding, finally enter autoclave, its vapor pressure: 1.0Mpa, temperature: 180 ℃, steam pressure system 2-8-2h.
Embodiment 2:
For the autoclaved fly ash brick of cold and dry area, its processing step is:
(1) by weight by flyash 38, carbide slag 20, broken brick 25, washed-out sand 16, stirs after gypsum 1 mixes;
(2) compound is put into slaking silos and digest, the time is 4 hours;
(3) after rolling, enter brick pressing machine moulding, finally enter autoclave, its vapor pressure: 1.2Mpa, temperature: 190 ℃, steam pressure system 2-8-2h.
Embodiment 3:
For the autoclaved fly ash brick of cold and dry area, its processing step is:
(1) by weight by flyash 42, carbide slag 22, broken brick 20, washed-out sand 15, stirs after gypsum 1 mixes;
(2) compound is put into slaking silos and digest, the time is 4 hours;
(3) after rolling, enter brick pressing machine moulding, finally enter autoclave, its vapor pressure: 1.3Mpa, temperature: 200 ℃, steam pressure system 2-8-2h.

Claims (3)

1. for an autoclaved fly ash brick for cold and dry area, it is characterized in that: main formula (parts by weight) is: flyash 30-55, carbide slag 15-30, broken brick 10-30, washed-out sand 10-25, gypsum 1-3.
2. the autoclaved fly ash brick for cold and dry area according to claim 1, its feature is that described raw material is to substitute unslaked lime as excitation material with carbide slag; With broken brick and washed-out sand as aggregate, and the shared large percentage of aggregate; Gypsum is as additive.
3. the autoclaved fly ash brick for cold and dry area according to claim 1, is characterized in that: the processing step of described flyash brick is as follows:
(1) will after flyash, carbide slag, broken brick, washed-out sand, gypsum and water mixing, stir;
(2) compound is put into slaking silos and digest, the time is 4 hours;
(3) after rolling, enter brick pressing machine moulding, finally enter autoclave; Its vapor pressure is: 1.0-1.3Mpa, temperature 180-200 ℃, steam pressure system: 2-8-2h.
CN201210355186.3A 2012-09-11 2012-09-11 Autoclaved fly ash-lime brick for severe cold arid area CN103664117A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210355186.3A CN103664117A (en) 2012-09-11 2012-09-11 Autoclaved fly ash-lime brick for severe cold arid area

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210355186.3A CN103664117A (en) 2012-09-11 2012-09-11 Autoclaved fly ash-lime brick for severe cold arid area

Publications (1)

Publication Number Publication Date
CN103664117A true CN103664117A (en) 2014-03-26

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Country Status (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104310883A (en) * 2014-10-09 2015-01-28 白银银光双银安装防腐有限公司 Autoclaved fly ash brick
CN106316252A (en) * 2016-08-19 2017-01-11 中盐安徽红四方新型建材科技有限公司 Autoclaved self-insulation block and production method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101412611A (en) * 2007-10-17 2009-04-22 李学林 Utilize flyash and carbide slag to make the method for autoclaved brick
CN102180633A (en) * 2011-02-17 2011-09-14 上海大屯能源股份有限公司 Autoclaved fly ash brick

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101412611A (en) * 2007-10-17 2009-04-22 李学林 Utilize flyash and carbide slag to make the method for autoclaved brick
CN102180633A (en) * 2011-02-17 2011-09-14 上海大屯能源股份有限公司 Autoclaved fly ash brick

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104310883A (en) * 2014-10-09 2015-01-28 白银银光双银安装防腐有限公司 Autoclaved fly ash brick
CN106316252A (en) * 2016-08-19 2017-01-11 中盐安徽红四方新型建材科技有限公司 Autoclaved self-insulation block and production method thereof
CN106316252B (en) * 2016-08-19 2018-11-20 中盐安徽红四方新型建材科技有限公司 Steam pressure heat insulation building block and preparation method thereof

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Application publication date: 20140326

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