CN103232261A - Vitrified microsphere aerated concrete preparation method - Google Patents

Vitrified microsphere aerated concrete preparation method Download PDF

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Publication number
CN103232261A
CN103232261A CN2013101302841A CN201310130284A CN103232261A CN 103232261 A CN103232261 A CN 103232261A CN 2013101302841 A CN2013101302841 A CN 2013101302841A CN 201310130284 A CN201310130284 A CN 201310130284A CN 103232261 A CN103232261 A CN 103232261A
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CN
China
Prior art keywords
glass bead
gas concrete
aerated concrete
metering
concrete
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Pending
Application number
CN2013101302841A
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Chinese (zh)
Inventor
尹明干
奚新国
朱华
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Yangcheng Institute of Technology
Yancheng Institute of Technology
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Yangcheng Institute of Technology
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Application filed by Yangcheng Institute of Technology filed Critical Yangcheng Institute of Technology
Priority to CN2013101302841A priority Critical patent/CN103232261A/en
Publication of CN103232261A publication Critical patent/CN103232261A/en
Pending legal-status Critical Current

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Abstract

The present invention discloses a vitrified microsphere aerated concrete preparation method, which comprises the following steps: sequentially carrying out dewatering, grinding, slurry storage and measurement on fly ash; measuring cement; crushing quicklime and gypsum, measuring, carrying out a mixing grinding treatment, and measuring; carrying out aluminum powder measurement; carrying out vitrified microsphere measurement; carrying out bubble stabilizer measurement; and stirring, pouring, standing, cutting, curing at a temperature of 195 DEG C with an autoclave, carrying out autoclaving under 1.2 MPa, heating for 3 h, carrying out constant temperature maintaining for 8 h, and cooling for 3 h. According to the present invention, the vitrified microsphere with a good thermal insulation effect is added to the aerated concrete so as to reduce a thermal conductivity coefficient of the aerated concrete, and improve a thermal insulation performance of the aerated concrete; the quicklime and the gypsum are added so as to further increase a strength of the vitrified microsphere aerated concrete, and well solve the problem of the poor thermal insulation effect of the existing aerated concrete; and the preparation method has characteristics of easy operation and low production cost, and the vitrified microsphere aerated concrete with good thermal insulation performance and high strength is provided.

Description

A kind of preparation method of glass bead gas concrete
Technical field
The invention belongs to concrete preparing technical field, relate in particular to a kind of preparation method of glass bead gas concrete.
Background technology
The concept gas concrete of gas concrete is with siliceous material (sand, flyash and contain silicon tailings etc.) and calcareous material (lime, cement) be main raw material, admixture foaming agent (aluminium powder), by batching, stir, cast, precuring, cutting, steam and press, the light porous silicate product that technological processs such as maintenance are made, because it contains a large amount of even and tiny pores after getting angry, so name gas concrete, the gas concrete sharpest edges economize the land resource exactly, need not waste a large amount of arable lands, and the source of its raw material very extensively, dust and sand, slag, flyash and coal gangue etc. all are the starting material of doing gas concrete, and very superior of the performance characteristics of gas concrete, but extraordinary working ability and heat insulation and insulated capacity are arranged, and very strong of plasticity-, but Bao can saw, extraordinary processing characteristics is arranged.
Glass bead is that surperficial vitreous forms certain granule strength; physicochemical property is very stable; ageing-resistant weathering resistance is strong, has excellent thermal insulation, fire prevention, sound absorption qualities, is fit to do in the numerous areas lightweight filler aggregate and thermal insulation, fire prevention, sound-absorbing, lagging material; in building material industry; with glass bead as aglite, can improve mortar with easy mobility and anti-certainly intensity, reduce the wood property shrinking percentage; improve the product over-all properties, reduce comprehensive production cost.
At present, existing gas concrete heat insulation effect is not good, has influenced people's normal use.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of preparation method of glass bead gas concrete, is intended to solve the not good problem of existing gas concrete heat insulation effect.
The embodiment of the invention is achieved in that a kind of preparation method of glass bead gas concrete, and the preparation method of described glass bead gas concrete may further comprise the steps:
To flyash dewater, levigate, slip stores, metering;
Cement-weighting;
Unslaked lime, gypsum fragmentation, metering, mix grinding is handled then, measures;
The aluminium powder metering;
The glass bead metering;
The bubble stabilizer metering;
Stirring, cast, quietly stop, cut, 195 ℃ of autoclave maintenances are steamed among the 1.2MPa and are pressed, intensification 3h, constant temperature 8h, cooling 3h.
Further, the benchmark proportioning of glass bead gas concrete: the production volume density is 500kg/m 3The proportioning of aerated coal ash concrete: cement 10%, unslaked lime 20%, gypsum 10%, flyash 70%, aluminium powder account for total mass 0.6 ‰, and bubble stabilizer accounts for total mass 0.6 ‰, ratio of water to material 0.6~0.7.
Further, the benchmark proportioning of glass bead gas concrete is because the different water-absorbents with bed material of glass bead virgin material are also different, along with glass bead volume increase water requirement also becomes big thereupon.
The preparation method of glass bead gas concrete of the present invention by add the good glass bead of heat insulation effect in gas concrete, has reduced the thermal conductivity of gas concrete, has improved the heat-insulating property of gas concrete; In addition, the adding of unslaked lime and flyash has further improved the intensity of glass bead gas concrete, preferably resolves the not good problem of existing gas concrete heat insulation effect.In addition, the present invention is easy to operate, and cost of manufacture is low, provides good heat insulating and intensity high glass bead gas concrete.
Description of drawings
Fig. 1 is the preparation method's of the glass bead gas concrete that provides of the embodiment of the invention schema;
Fig. 2 is the preparation method's of the glass bead gas concrete that provides of the embodiment of the invention particular flow sheet.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the present invention, and be not used in restriction the present invention.
Fig. 1 shows the preparation method of glass bead gas concrete provided by the invention.For convenience of explanation, only show part related to the present invention.
The preparation method of glass bead gas concrete of the present invention, the preparation method of this glass bead gas concrete may further comprise the steps:
To flyash dewater, levigate, slip stores, metering;
Cement-weighting;
Unslaked lime, gypsum fragmentation, metering, mix grinding is handled then, measures;
The aluminium powder metering;
The glass bead metering;
The bubble stabilizer metering;
Stirring, cast, quietly stop, cut, 195 ℃ of autoclave maintenances are steamed among the 1.2MPa and are pressed, intensification 3h, constant temperature 8h, cooling 3h.
As a prioritization scheme of the embodiment of the invention, the benchmark proportioning of glass bead gas concrete: the production volume density is 500kg/m 3The proportioning of aerated coal ash concrete: cement 10%, unslaked lime 20%, gypsum 10%, flyash 70%, aluminium powder account for total mass 0.6 ‰, and bubble stabilizer accounts for total mass 0.6 ‰, ratio of water to material 0.6~0.7.
As a prioritization scheme of the embodiment of the invention, the benchmark proportioning of glass bead gas concrete also becomes big because the different water-absorbents with bed material of glass bead virgin material are also different along with the glass bead volume increases water requirement thereupon.
Below in conjunction with drawings and the specific embodiments application principle of the present invention is further described.
As depicted in figs. 1 and 2, the preparation method of the glass bead gas concrete of the embodiment of the invention may further comprise the steps:
S101: to flyash dewater, levigate, slip stores, metering;
S102:: cement-weighting;
S103: unslaked lime, gypsum fragmentation, metering, mix grinding is handled then, measures;
S104: aluminium powder metering;
S105: glass bead metering;
S106: bubble stabilizer metering;
S107: stirring, cast, quietly stop, cut, 195 ℃ of autoclave maintenances are steamed among the 1.2MPa and are pressed, intensification 3h, constant temperature 8h, cooling 3h.
Principle of the present invention is: for the ultimate compression strength of glass bead gas concrete, the influence of each factor is in proper order: unslaked lime (B) → flyash (C) → glass bead (A); Wherein the ultimate compression strength size of the glass bead gas concrete of unslaked lime volume after to moulding influences highly significant; The ultimate compression strength size influence of the glass bead gas concrete of flyash after to moulding significantly; Glass bead its concrete test block intensity after to moulding has certain influence; The factor that influences material thermal conductivity is a lot, wherein mainly is the kind of material, and the structure of material and physical condition also have the temperature of material, humidity, factors such as density in addition; With reference in the preparation of B05 level gas concrete and the thermal technology's analysis thereof it being prepared the measured thermal conductivity of test block; Be row with the good air-entrained concrete building block of heat-insulating property, unit weight 400kg/m 3-700kg/m 3The gas concrete thermal conductivity be generally 0.09W/ (mK)-0.22W/ (mK), insulated capacity be clay brick 3-4 doubly, the 4-8 of normal concrete is doubly; Because admixture all is ceramic in the glass bead gas concrete, also having added thermal conductivity is the glass bead of 0.032-0.045W/ (mK); Steam and press glass bead gas concrete inside to contain a large amount of bubbles and micropore equally; Thereby can predict that unit weight is at 400kg/m 3-500kg/m 3It is lower that glass bead gas concrete and common gas concrete are compared thermal conductivity, has better heat insulation effect.
1, the glass bead volume is more big, and the water yield required in its moulding process is also wanted corresponding increase;
2, the slip denseness of injection molding can not be too rare can not be too thick, cross rare meeting and cause bubble floating, in skin breakage, make the inside concrete bubble very few and inhomogeneous; Feeding-up test block internal voids is too much, can't get angry, and adds after the water stage should add water to the slip injection molding, and injection molding test block surface strikes off the rear surface with trowel has one deck water stain;
3, mix an amount of glass bead in the concrete, its thermal conductivity significantly reduces than simple concrete test block, and heat insulation effect obviously improves;
4, each component to the ultimate compression strength size influence of glass bead gas concrete is in proper order: influence is in proper order: glass bead>flyash>unslaked lime to glass bead air-entrained concrete shaping test block unit dry weight size for unslaked lime>flyash>glass bead, each component;
5, the glass bead volume is not more big just more good to intensity of test block; the 3rd group of intensity of test block is the highest in the experiment proportioning; can suppose to work as the glass bead volume about 20%, suitably adjust the Wingdale volume, glass bead gas concrete intensity of test block aspect can obtain the raising in a nearly step.
The preparation method of glass bead gas concrete of the present invention, production volume density are 500kg/m 3The proportioning of (B05 level) aerated coal ash concrete: cement (No. 42.5 silicate cements) 10%, unslaked lime 20%, dihydrate gypsum 10%, flyash 70%, aluminium powder 0.6 ‰ (accounting for total mass), suds-stabilizing agent (selecting LAB30 dodecanamide propyl trimethyl-glycine for use) is a small amount of, ratio of water to material 0.6~0.7.
It is as shown in the table to consider horizontal factor:
Test block is organized in the moulding in early stage more, and by getting angry, intensity, water requirement and test block quality are through repeatedly moulding test, and it is as shown in the table finally to determine to prepare the gas concrete proportioning by glass bead:
Table glass bead gas concrete proportioning
Indicate: 1. because the different water-absorbents with bed material of glass bead virgin material are also different; Along with increasing water requirement, the glass bead volume also becomes big, so ratio of water to material is adjusted according to circumstances thereupon
Experimental data and analysis
Experiment early stage, it was mainly the debug phase, therefrom obtained experience adjustments experiment proportioning and grasped skill in some moulding processes with precaution, and it is as shown in the table thereby finish test block one to nine data smoothly.
Table orthogonal test scheme and result
Table range analysis result:
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.

Claims (3)

1. the preparation method of a glass bead gas concrete is characterized in that, the preparation method of described glass bead gas concrete may further comprise the steps:
To flyash dewater, levigate, slip stores, metering;
Cement-weighting;
Unslaked lime, gypsum fragmentation, metering, mix grinding is handled then, measures;
The aluminium powder metering;
The glass bead metering;
The bubble stabilizer metering;
Stirring, cast, quietly stop, cut, 195 ℃ of autoclave maintenances are steamed among the 1.2MPa and are pressed, intensification 3h, constant temperature 8h, cooling 3h.
2. the preparation method of glass bead gas concrete as claimed in claim 1 is characterized in that, the benchmark proportioning of glass bead gas concrete: the production volume density is 500kg/m 3The proportioning of aerated coal ash concrete: cement 10%, unslaked lime 20%, gypsum 10%, flyash 70%, aluminium powder account for total mass 0.6 ‰, and bubble stabilizer accounts for total mass 0.6 ‰, ratio of water to material 0.6~0.7.
3. the preparation method of glass bead gas concrete as claimed in claim 1; it is characterized in that; the benchmark proportioning of glass bead gas concrete also becomes big because the different water-absorbents with bed material of glass bead virgin material are also different along with the glass bead volume increases water requirement thereupon.
CN2013101302841A 2013-04-07 2013-04-07 Vitrified microsphere aerated concrete preparation method Pending CN103232261A (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
CN2013101302841A CN103232261A (en) 2013-04-07 2013-04-07 Vitrified microsphere aerated concrete preparation method

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103833310A (en) * 2014-01-06 2014-06-04 山西省第二建筑工程公司 Novel thermal-insulation building block
CN103922788A (en) * 2014-03-19 2014-07-16 江苏华伟佳建材科技有限公司 Expanded vitrified micro-bead aerated thermal insulation product and production method thereof
CN105924113A (en) * 2016-04-18 2016-09-07 盐城工学院 Self-heat insulation aerated concrete building block and mortar for construction of building blocks
CN106187295A (en) * 2016-07-04 2016-12-07 吉林建筑大学 The powder ash air-entrained concrete building block of a kind of low heat conduction and production method
CN109250991A (en) * 2018-11-19 2019-01-22 遵义景程环保材料有限公司 With the method for superfinishing fine powdered coal production air entrained concrete
CN109665859A (en) * 2018-09-19 2019-04-23 贵州师范大学 The production method of rice-straw fibre air entrained concrete

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CN102757256A (en) * 2012-07-18 2012-10-31 公安部四川消防研究所 Incombustible organic/inorganic porous waterproof thermal-insulation composite material and preparation method thereof

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CN102757256A (en) * 2012-07-18 2012-10-31 公安部四川消防研究所 Incombustible organic/inorganic porous waterproof thermal-insulation composite material and preparation method thereof

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李珠: "《玻化微珠保温材料的系列研究与"城市窑洞"式绿色建筑》", 31 December 2011, 北京邮电大学出版社 *
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103833310A (en) * 2014-01-06 2014-06-04 山西省第二建筑工程公司 Novel thermal-insulation building block
CN103922788A (en) * 2014-03-19 2014-07-16 江苏华伟佳建材科技有限公司 Expanded vitrified micro-bead aerated thermal insulation product and production method thereof
CN103922788B (en) * 2014-03-19 2015-08-05 江苏华伟佳建材科技有限公司 A kind of expanded and vitrified small ball aerated insulation goods and production method
CN105924113A (en) * 2016-04-18 2016-09-07 盐城工学院 Self-heat insulation aerated concrete building block and mortar for construction of building blocks
CN106187295A (en) * 2016-07-04 2016-12-07 吉林建筑大学 The powder ash air-entrained concrete building block of a kind of low heat conduction and production method
CN109665859A (en) * 2018-09-19 2019-04-23 贵州师范大学 The production method of rice-straw fibre air entrained concrete
CN109250991A (en) * 2018-11-19 2019-01-22 遵义景程环保材料有限公司 With the method for superfinishing fine powdered coal production air entrained concrete

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Application publication date: 20130807