CN104671716A - Method for producing aerated concrete blocks with recycled micropowder - Google Patents
Method for producing aerated concrete blocks with recycled micropowder Download PDFInfo
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- CN104671716A CN104671716A CN201510056931.8A CN201510056931A CN104671716A CN 104671716 A CN104671716 A CN 104671716A CN 201510056931 A CN201510056931 A CN 201510056931A CN 104671716 A CN104671716 A CN 104671716A
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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
The invention discloses a method for producing aerated concrete blocks with recycled micropowder. The method comprises the following steps: (a) selecting materials; (b) weighing the materials; (c) mixing; (d) feeding aluminum powder; (e) assembling and stripping; and (f) cutting and curing. According to the method, recycled fine aggregates are used for producing aerated concrete blocks, not only the application fields of the recycled fine aggregates is widened and the source conversion rate is improved, but also the recycled fine aggregates can replace a part of natural materials, the cost is reduced, and the environment is protected; through the novel design of the mix proportion of the materials, production of compliant recycled micropowder aerated concrete blocks is achieved through the non-autoclaved natural curing method, not only are the production cost and the production energy consumption reduced, but also the method disclosed by the invention is beneficial for improving the source conversion rate of building wastes and widening the application of the technology.
Description
Technical field
The present invention relates to a kind of manufacture method of regenerative micro powder air-entrained concrete building block.
Background technology
Autoclave aerated concrete building block has been the materials for wall generally used, existing autoclave aerated concrete building block product with cement, lime for major gelled material, be aided with breeze, fine sand etc. as packing material, with aluminium powder for material of getting angry, through grinding, stir, get angry, shaping and High Temperature High Pressure maintenance forms.Material that whole production process uses is natural materials, and natural materials is all the non-renewable material of short-term, and excessive exploitation can have a strong impact on physical environment, and produces equipment cost used and drop into huge, and production energy consumption is large.
Building castoff refers to construction unit, unit in charge of construction is newly-built, renovating and enlarging and remove the spoir, rejected material and other wastes that produce in all kinds of buildings, structures, pipe network etc. and resident's decorations house process.
Building castoff refers to construction unit, unit in charge of construction is newly-built, renovating and enlarging and remove the spoir, rejected material and other wastes that produce in all kinds of buildings, structures, pipe network etc. and resident's decorations house process.Along with the development of Process of Urbanization Construction, building castoff quantity discharged in engineering construction increases year by year, and its regeneration work progress is slow, cause its utilization ratio always all lower, landfill disposal rough at present occupies a large amount of land resources, not only wasting manpower and material resources carries out the maintenance of discharging place, also has an impact to vegetation, underground water, causes the secondary pollution of environment.Therefore how to expand the utilization orientation of building castoff, improve the utilization ratio of building castoff, and then solve the land resources and environmental problem that cause due to a large amount of discharge of building castoff, become the technical problem of government and enviromental protection enterprise's urgent need solution always.
Summary of the invention
The technical problem to be solved in the present invention is to overcome technological deficiency recited above, provides a kind of manufacture method of regenerative micro powder air-entrained concrete building block.
In order to solve technical problem recited above, the present invention takes following technical scheme:
A manufacture method for regenerative micro powder air-entrained concrete building block, comprises the following steps:
A () is selected materials: after first building castoff being carried out removal of impurities, fragmentation, filter out the regenerative powder that particle diameter is less than 0.15mm;
(b) weighing: weigh adulterant and admixture by weight the ratio being 3-4:1, adulterant includes the regenerative powder, flyash, cement, unslaked lime, breeze, silicon ash, white lime and the sodium sulfate that weigh by weight the ratio for 5-7:6-8:5-6:4.8-5.5:3-4:2-3:3.5-4.5:1; Admixture includes the xylogen, trolamine, sodium hydroxide, calcium hydroxide, magnesium sulfate, water reducer, suds-stabilizing agent and the retardant that weigh by weight the ratio for 1:1.5-2:2-2.5:3-3.5:1-1.2:0.23-0.35:0.5-0.8:0.1-0.15;
C () stirs: load weighted for step b adulterant is put into stirrer and stirs, be 0.3 ~ 0.68 add water by water cement ratio after stirring, and pour whole admixture into, continue to stir, stir 5 ~ 10min with the stirring velocity of 40-50r/min, obtain the glue material mixed;
D () adds aluminium powder: first the aluminium powder accounting for glue material gross weight 0.05% ~ 0.2% mixed with water and stir, the weight ratio of aluminium powder and water is 0.05 ~ 0.1:1, aluminium powder and water stir into aluminum paste aqueous time pour in stirrer lentamente again, stirrer is the slurries of falling aluminium powder while stirring;
(e) die-filling and demoulding: get out mould, aluminium powder slurries are poured into stirrer and stirs, until see when having bubble to come up from concrete mixture, die-filling immediately, after die-filling temperature be 15 DEG C ~ 30 DEG C, relative humidity be the ambient condition of 40% ~ 70% under maintenance, maintenance more than 12 hours, carries out form removal after reaching strength of mould stripping;
(f) cutting and maintenance: cut under the embryo block after the demoulding is placed on cutting machine, after cutting, be placed on that temperature is 15 DEG C ~ 30 DEG C, relative humidity is maintenance at least maintenance 28 days under the ambient condition of 40% ~ 70%, form regenerative micro powder air-entrained concrete building block.
In the admixture composition of step b of the present invention, xylogen is the aromaticity superpolymer containing oxo phenylpropyl alcohol or derivatives thereof structural unit in a kind of unbodied, molecular structure be extensively present in plant materials; Water reducer is the concrete admixture that can reduce mixing water amount under a kind of condition constant at maintenance concrete slump; Suds-stabilizing agent refers to and everyly can improve bubble stability, extends the material of bubble burst transformation period; Retardant is a kind of additive reducing cement or gypsum hydration rate and hydration heat, prolongation time of coagulation.Above-mentioned composition has no special requirements, can from purchasing any a use on the market.
The present invention is broken by building castoff, grind, screening, choose the regenerative powder that particle diameter is less than 0.15mm, to mix by corresponding proportioning to the other materials such as cement, water and stir together, and in whipping process, add aluminium powder slurries, and then carry out the die-filling demoulding, finally carry out cutting and maintenance, obtained regenerative micro powder air-entrained concrete building block.
This recycled fine aggregate for the production of air-entrained concrete building block, not only can be expanded its Application Areas by the present invention, improves resource conversion rate, and can Substitute For Partial natural materials, cost-saving, protection of the environment.
By the innovative design to mix proportion in the present invention, achieve by the natural curing mode production performance of non-evaporating pressure regenerative micro powder autoclaved lightweight concrete up to standard, not only reduce production cost and production energy consumption, and be conducive to the resource conversion rate improving building castoff, be conducive to the popularization of this technology.
Embodiment
Embodiment one:
A manufacture method for regenerative micro powder air-entrained concrete building block, comprises the following steps:
A () is selected materials: after first building castoff being carried out removal of impurities, fragmentation, filter out the regenerative powder that particle diameter is less than 0.15mm;
(b) weighing: weigh adulterant and admixture by weight the ratio being 3-4:1, adulterant includes the regenerative powder, flyash, cement, unslaked lime, breeze, silicon ash, white lime and the sodium sulfate that weigh by weight the ratio for 5-7:6-8:5-6:4.8-5.5:3-4:2-3:3.5-4.5:1; Admixture includes the xylogen, trolamine, sodium hydroxide, calcium hydroxide, magnesium sulfate, water reducer, suds-stabilizing agent and the retardant that weigh by weight the ratio for 1:1.5-2:2-2.5:3-3.5:1-1.2:0.23-0.35:0.5-0.8:0.1-0.15;
C () stirs: load weighted for step b adulterant is put into stirrer and stirs, be 0.3 ~ 0.68 add water by water cement ratio after stirring, and pour whole admixture into, continue to stir, stir 5 ~ 10min with the stirring velocity of 40-50r/min, obtain the glue material mixed;
D () adds aluminium powder: first the aluminium powder accounting for glue material gross weight 0.05% ~ 0.2% mixed with water and stir, the weight ratio of aluminium powder and water is 0.05 ~ 0.1:1, aluminium powder and water stir into aluminum paste aqueous time pour in stirrer lentamente again, stirrer is the slurries of falling aluminium powder while stirring;
(e) die-filling and demoulding: get out mould, aluminium powder slurries are poured into stirrer and stirs, until see when having bubble to come up from concrete mixture, die-filling immediately, after die-filling temperature be 15 DEG C ~ 30 DEG C, relative humidity be the ambient condition of 40% ~ 70% under maintenance, maintenance more than 12 hours, carries out form removal after reaching strength of mould stripping;
(f) cutting and maintenance: cut under the embryo block after the demoulding is placed on cutting machine, after cutting, be placed on that temperature is 15 DEG C ~ 30 DEG C, relative humidity is maintenance at least maintenance 28 days under the ambient condition of 40% ~ 70%, form regenerative micro powder air-entrained concrete building block.
Embodiment two:
A manufacture method for regenerative micro powder air-entrained concrete building block, comprises the following steps:
A () is selected materials: after first building castoff being carried out removal of impurities, fragmentation, filter out the regenerative powder that particle diameter is less than 0.15mm;
(b) weighing: weigh adulterant and admixture by weight the ratio being 169:50.8, adulterant includes the regenerative powder, flyash, cement, unslaked lime, breeze, silicon ash, white lime and the sodium sulfate that weigh by weight the ratio for 30:35:28:26:18:12:20:5; Admixture includes the xylogen, trolamine, sodium hydroxide, calcium hydroxide, magnesium sulfate, water reducer, suds-stabilizing agent and the retardant that weigh by weight the ratio for 5:8:11:16:5.3:1.4:3.5:0.6;
C () stirs: load weighted for step b adulterant is put into stirrer and stirs, be 0.3 ~ 0.68 add water by water cement ratio after stirring, and pour whole admixture into, continue to stir, stir 5 ~ 10min with the stirring velocity of 40-50r/min, obtain the glue material mixed;
D () adds aluminium powder: first the aluminium powder accounting for glue material gross weight 0.05% ~ 0.2% mixed with water and stir, the weight ratio of aluminium powder and water is 0.05 ~ 0.1:1, aluminium powder and water stir into aluminum paste aqueous time pour in stirrer lentamente again, stirrer is the slurries of falling aluminium powder while stirring;
(e) die-filling and demoulding: get out mould, aluminium powder slurries are poured into stirrer and stirs, until see when having bubble to come up from concrete mixture, die-filling immediately, after die-filling temperature be 15 DEG C ~ 30 DEG C, relative humidity be the ambient condition of 40% ~ 70% under maintenance, maintenance more than 12 hours, carries out form removal after reaching strength of mould stripping;
(f) cutting and maintenance: cut under the embryo block after the demoulding is placed on cutting machine, after cutting, be placed on that temperature is 15 DEG C ~ 30 DEG C, relative humidity is maintenance at least maintenance 28 days under the ambient condition of 40% ~ 70%, form regenerative micro powder air-entrained concrete building block.
The powder that the present invention utilizes building castoff to be formed after grinding, the alkaline environment formed is reacted in its natural state with the other materials such as water, cement, add aluminium powder again, aluminium powder and alkaline matter react, hydrogen is had to generate, under the pressure effect in the external world, there is hydrogen partial cannot overflow from concrete, thus generate the little perforated brick of airtight hole.
Claims (1)
1. a manufacture method for regenerative micro powder air-entrained concrete building block, is characterized in that: comprise the following steps:
A () is selected materials: after first building castoff being carried out removal of impurities, fragmentation, filter out the regenerative powder that particle diameter is less than 0.15mm;
(b) weighing: weigh adulterant and admixture by weight the ratio being 3-4:1, adulterant includes the regenerative powder, flyash, cement, unslaked lime, breeze, silicon ash, white lime and the sodium sulfate that weigh by weight the ratio for 5-7:6-8:5-6:4.8-5.5:3-4:2-3:3.5-4.5:1; Admixture includes the xylogen, trolamine, sodium hydroxide, calcium hydroxide, magnesium sulfate, water reducer, suds-stabilizing agent and the retardant that weigh by weight the ratio for 1:1.5-2:2-2.5:3-3.5:1-1.2:0.23-0.35:0.5-0.8:0.1-0.15;
C () stirs: load weighted for step b adulterant is put into stirrer and stirs, be 0.3 ~ 0.68 add water by water cement ratio after stirring, and pour whole admixture into, continue to stir, stir 5 ~ 10min with the stirring velocity of 40-50r/min, obtain the glue material mixed;
D () adds aluminium powder: first the aluminium powder accounting for glue material gross weight 0.05% ~ 0.2% mixed with water and stir, the weight ratio of aluminium powder and water is 0.05 ~ 0.1:1, aluminium powder and water stir into aluminum paste aqueous time pour in stirrer lentamente again, stirrer is the slurries of falling aluminium powder while stirring;
(e) die-filling and demoulding: get out mould, aluminium powder slurries are poured into stirrer and stirs, until see when having bubble to come up from concrete mixture, die-filling immediately, after die-filling temperature be 15 DEG C ~ 30 DEG C, relative humidity be the ambient condition of 40% ~ 70% under maintenance, maintenance more than 12 hours, carries out form removal after reaching strength of mould stripping;
(f) cutting and maintenance: cut under the embryo block after the demoulding is placed on cutting machine, after cutting, be placed on that temperature is 15 DEG C ~ 30 DEG C, relative humidity is maintenance at least maintenance 28 days under the ambient condition of 40% ~ 70%, form regenerative micro powder air-entrained concrete building block.
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Cited By (9)
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| CN106673592A (en) * | 2017-01-10 | 2017-05-17 | 盛丹 | Method for preparing concrete pavement brick by using recycled aggregate of construction waste |
| CN107445538A (en) * | 2017-07-19 | 2017-12-08 | 南京工业大学 | Non-autoclaved foam concrete material and preparation method thereof |
| CN107721286A (en) * | 2017-07-19 | 2018-02-23 | 深圳市华威环保建材有限公司 | A kind of manufacturing process of regenerative micro powder air-entrained concrete building block |
| CN107902936A (en) * | 2017-07-19 | 2018-04-13 | 深圳市华威环保建材有限公司 | A kind of production technology of building castoff regeneration aggregate |
| CN110642585A (en) * | 2019-10-09 | 2020-01-03 | 湖南工程学院 | Aerated concrete block and preparation process thereof |
| CN110734300A (en) * | 2019-10-09 | 2020-01-31 | 湖南工程学院 | aerated concrete blocks and preparation process thereof |
| CN111285655A (en) * | 2020-03-24 | 2020-06-16 | 安徽省高迪循环经济产业园股份有限公司 | Aerated concrete preparation method based on solid waste resource utilization |
| CN112062533A (en) * | 2020-08-07 | 2020-12-11 | 扬州大学 | Alkali-activated regenerated micro-powder foam concrete and preparation method thereof |
| CN112645656A (en) * | 2020-12-28 | 2021-04-13 | 深圳市华威环保建材有限公司 | Decoration waste base high-strength foam concrete and preparation method thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106673592A (en) * | 2017-01-10 | 2017-05-17 | 盛丹 | Method for preparing concrete pavement brick by using recycled aggregate of construction waste |
| CN106673592B (en) * | 2017-01-10 | 2019-04-30 | 盛丹 | The method for preparing concrete road pavement brick using construction refuse regenerated aggregate |
| CN107445538A (en) * | 2017-07-19 | 2017-12-08 | 南京工业大学 | Non-autoclaved foam concrete material and preparation method thereof |
| CN107721286A (en) * | 2017-07-19 | 2018-02-23 | 深圳市华威环保建材有限公司 | A kind of manufacturing process of regenerative micro powder air-entrained concrete building block |
| CN107902936A (en) * | 2017-07-19 | 2018-04-13 | 深圳市华威环保建材有限公司 | A kind of production technology of building castoff regeneration aggregate |
| CN110642585A (en) * | 2019-10-09 | 2020-01-03 | 湖南工程学院 | Aerated concrete block and preparation process thereof |
| CN110734300A (en) * | 2019-10-09 | 2020-01-31 | 湖南工程学院 | aerated concrete blocks and preparation process thereof |
| CN110642585B (en) * | 2019-10-09 | 2021-10-22 | 湖南工程学院 | Aerated concrete block and preparation process thereof |
| CN111285655A (en) * | 2020-03-24 | 2020-06-16 | 安徽省高迪循环经济产业园股份有限公司 | Aerated concrete preparation method based on solid waste resource utilization |
| CN112062533A (en) * | 2020-08-07 | 2020-12-11 | 扬州大学 | Alkali-activated regenerated micro-powder foam concrete and preparation method thereof |
| CN112645656A (en) * | 2020-12-28 | 2021-04-13 | 深圳市华威环保建材有限公司 | Decoration waste base high-strength foam concrete and preparation method thereof |
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Application publication date: 20150603 |