CN106082801A - A kind of low cost sand aerated concrete block production technology - Google Patents
A kind of low cost sand aerated concrete block production technology Download PDFInfo
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- CN106082801A CN106082801A CN201610404243.0A CN201610404243A CN106082801A CN 106082801 A CN106082801 A CN 106082801A CN 201610404243 A CN201610404243 A CN 201610404243A CN 106082801 A CN106082801 A CN 106082801A
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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
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/302—Water reducers
-
- 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)
Abstract
The invention discloses a kind of low cost sand aerated concrete block production technology, described sand aerated concrete block, is prepared by the raw materials in: No. 32.5 cement 18 21 parts, quick lime 29 30 parts, 78 parts of Gypsum Fibrosum, 19 22 parts of flyash, 35 37 parts of water, the lake sand 126 130 parts of 50 100 mesh, aluminium powder 0.135 part, water reducer 12 parts.Using lake sand to instead of quartz sand, the air-entrained concrete building block production cost of preparation is low, prepares concrete segment comprcssive strength good, and it is little, for below 0.40mm/m that comprcssive strength is up to 6.2MPa, shrinkage value.
Description
Technical field
The invention belongs to building material field, specific design one low cost sand aerated concrete block production technology.
Background technology
The 12nd five-year-plan of national economy and social development points out that China's urbanization rate in 2010 is 47.5%, " ten
Two or five " period will keep the growth trend of annual 0.8%, to " 12 " latter stage, is up to 51.5%.China town and country are annual
New building area 2,000,000,000～3,000,000,000 m2, existing building about 43,000,000,000 m2.The demand of air-entrained concrete building block is constantly increasing, but
It is that price remains high always.For reducing sand aerated concrete block production cost in existing production, CN 101713229 B profit
Carry out Substitute For Partial quartz sand with copper ore tailings, but either use copper ore tailings or quartz sand to be both needed to levigate rear use, CN
101713229 B need be milled to 180 mesh could use, but owing to the quality of quartz sand own is the hardest, pulverizing levigate mistake
Journey needs consume substantial amounts of electric energy.
Summary of the invention
It is an object of the invention to provide a kind of low cost sand aerated concrete block production technology, production technology of the present invention is raw
Produce low cost, prepare block performance excellent.
The present invention is achieved through the following technical solutions above-mentioned purpose: a kind of low cost sand aerated concrete block, by
The raw material of following weight portion is made:
No. 32.5 cement 18-21 parts, quick lime 29-30 part, Gypsum Fibrosum 7-8 part, flyash 19-22 part, water 35-37 part, 50-
Lake sand 126-130 part of 100 mesh, aluminium powder 0.135 part, water reducer 1-2 part；
Described water reducer is made up of, wherein MNC-AS type aminosulfonate-based superplasticizer and MNC-PCP type poly carboxylic acid series water reducer
The two weight ratio is 1:1；
According to an aspect of the present invention, the invention provides a kind of low cost sand aerated concrete block production method,
Comprise the following steps:
1) lake sand pretreatment: dry after natural lake sand water is fully washed, then pulverize and sieve to 50-100 mesh；
2) take the lake sand after No. 32.5 cement, quick lime, aluminium powder, process of weight proportion and be added to the water mix homogeneously pulping
Shape, is subsequently adding water reducer and stirs 10min under 100-200r/min rotating speed, be eventually adding Gypsum Fibrosum, flyash, 35-40 DEG C,
Under 200-300r/min rotating speed, stirring i.e. obtains concrete slurry in 0.5 hour；
3) concrete slurry at room temperature carries out concrete segment bricks die to pour into a mould, concussion cast in casting process
Mould, being then placed in pressure, to be that the pressurization indoor pressurization under 2MPa enables slip pour into a mould for 3-5 hour closely knit；
4) cast is put into the most foster room and is shaped maintenance 7 hours in 40 DEG C after terminating, and maintenance terminates the rear demoulding and cuts into brick
Bulk, then by fragment of brick in still kettle the most steam-cured, the first stage control temperature be 70 DEG C steam-cured 5 hours, second stage
Be warming up to 90 DEG C steam-cured 3 hours, be finally warming up at 170 DEG C steam-cured 6 hours i.e. obtain concrete segment.
The present invention uses lake sand to instead of quartz sand first, and lake sand is in its natural state, the most anti-through the active force of water
Multiple collide, fricative, its granularity is tiny, and it is low that the later stage pulverizes difficulty, and energy consumption is low, and quality is inclined relative to quartz sand
Soft, it is also beneficial to later stage pulverizing；Compared with river sand, lake sand salt content is low, and have passed through washing before using and dry operation,
Reduce the corrosiveness of salinity, reach the action effect of quartz sand.
The water reducer that the present invention uses is that weight ratio is the MNC-AS type aminosulfonate-based superplasticizer of 1:1 and MNC-PCP type gathers
Carboxylic acid water reducing agent forms, and is used alone MNC-AS type amino series high-efficiency water-reducing agent and concrete water-retaining property can be caused bad, isolation
Excreting water phenomenon is serious；When using MNC-PCP type poly carboxylic acid series water reducer to use with respond well, especially the two weight equal proportion
Time.
The present invention use in casting process concussion and the mode of pressurization ensure that cast is more closely knit, hence it is evident that to improve
The comprcssive strength of building block, reduction Material shrinkage rate, solve air entrained concrete intensity low big with contraction, the deficiency easily ftractureed；
Use during later stage is steam-cured and the most steam-cured solve the problem that concrete segment easily ftractures, adjust 70 DEG C steam-cured 5 hours
Making to show that water major part is evaporated, 90 DEG C make solidified inside hardening in steam-cured 3 hours, make inner moisture steam, prevent because the later stage is steam-cured
Temperature is too high, causes the temperature difference excessively to make the most greatly building block ftracture；Later stage improves temperature again and within steam-cured 6 hours, extremely does, very well at 170 DEG C
Solve building block cracking problem.
Sand aerating uses lake sand for using quartz sand production work, and the electricity charge that comprehensive grinding consumes, artificial, equipment loss etc. are square
From the point of view of face, contrast quartz sand often produces side's air-entrained concrete building block and saves production cost about 4 yuan.
Compared with prior art, present invention have the advantage that
1. the present invention uses lake sand to instead of quartz sand, and the air-entrained concrete building block production cost of preparation is low；
2. to prepare concrete segment comprcssive strength good for the present invention, and it is little that comprcssive strength is up to 6.2MPa, shrinkage value, for
Below 0.40mm/m.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention of greater clarity, below in conjunction with detailed description of the invention, to this
Invention further describes.It should be understood that these describe the most exemplary, and it is not intended to limit the scope of the present invention.
Embodiment 1
Preparation material:
Weigh by weight: No. 32.5 cement 18 parts, quick lime 29 parts, 7 parts of Gypsum Fibrosum, 19 parts of flyash, 35 parts of water, 50-
The lake sand of 100 mesh 32 parts, water reducer 1 part, aluminium powder 0.135 part；
Described water reducer is made up of, wherein MNC-AS type aminosulfonate-based superplasticizer and MNC-PCP type poly carboxylic acid series water reducer
The two weight ratio is 1:1；
Sand aerated concrete block production stage:
1) lake sand pretreatment: dry after natural lake sand water is fully washed, then pulverize and sieve to 50-100 mesh；
2) take the lake sand after No. 32.5 cement, quick lime, aluminium powder, process of weight proportion and be added to the water mix homogeneously pulping
Shape, is subsequently adding water reducer and stirs 10min under 100r/min rotating speed, be eventually adding Gypsum Fibrosum, flyash, at 40 DEG C, 200-
Under 300r/min rotating speed, stirring i.e. obtains concrete slurry in 0.5 hour；
3) concrete slurry at room temperature carries out concrete segment bricks die to pour into a mould, concussion cast in casting process
Mould, being then placed in pressure, to be that the pressurization indoor pressurization under 2MPa enables slip to pour into a mould in 3 hours closely knit；
4) cast is put into the most foster room and is shaped maintenance 7 hours in 40 DEG C after terminating, and maintenance terminates the rear demoulding and cuts into brick
Bulk, then by fragment of brick in still kettle the most steam-cured, the first stage control temperature be 70 DEG C steam-cured 5 hours, second stage
Be warming up to 90 DEG C steam-cured 3 hours, be finally warming up at 170 DEG C steam-cured 6 hours i.e. obtain concrete segment.
Embodiment 2
Weigh by weight ratio: No. 32.5 cement 21 parts, quick lime 30 parts, 8 parts of Gypsum Fibrosum, 22 parts of flyash, 37 parts of water,
The lake sand of 50-100 mesh 38 parts, water reducer 2 parts, aluminium powder 0.135 part；
Described water reducer is made up of, wherein MNC-AS type aminosulfonate-based superplasticizer and MNC-PCP type poly carboxylic acid series water reducer
The two weight ratio is 1:1；
Sand aerated concrete block production stage:
1) lake sand pretreatment: dry after natural lake sand water is fully washed, then pulverize and sieve to 50-100 mesh；
2) take the lake sand after No. 32.5 cement, quick lime, aluminium powder, process of weight proportion and be added to the water mix homogeneously pulping
Shape, is subsequently adding water reducer and stirs 10min under 200r/min rotating speed, be eventually adding Gypsum Fibrosum, flyash, at 40 DEG C, 300r/
Under min rotating speed, stirring i.e. obtains concrete slurry in 0.5 hour；
3) concrete slurry at room temperature carries out concrete segment bricks die to pour into a mould, concussion cast in casting process
Mould, being then placed in pressure, to be that the pressurization indoor pressurization under 2MPa enables slip to pour into a mould in 5 hours closely knit；
4) cast is put into the most foster room and is shaped maintenance 7 hours in 40 DEG C after terminating, and maintenance terminates the rear demoulding and cuts into brick
Bulk, then by fragment of brick in still kettle the most steam-cured, the first stage control temperature be 70 DEG C steam-cured 5 hours, second stage
Be warming up to 90 DEG C steam-cured 3 hours, be finally warming up at 170 DEG C steam-cured 6 hours i.e. obtain concrete segment.
Embodiment 3
Preparation material:
Weigh No. 32.5 cement 19 parts, quick lime 29 parts, 8 parts of Gypsum Fibrosum, 20 parts of flyash, 36 parts of water, 50-by weight ratio
The lake sand of 100 mesh 1280 parts, aluminium powder 0.135 part, water reducer 1.5 parts；
Described water reducer is made up of, wherein MNC-AS type aminosulfonate-based superplasticizer and MNC-PCP type poly carboxylic acid series water reducer
The two weight ratio is 1:1；
Sand aerated concrete block production stage:
1) lake sand pretreatment: dry after natural lake sand water is fully washed, then pulverize and sieve to 50-100 mesh；
2) take the lake sand after No. 32.5 cement, quick lime, aluminium powder, process of weight proportion and be added to the water mix homogeneously pulping
Shape, is subsequently adding water reducer and stirs 10min under 200r/min rotating speed, be eventually adding Gypsum Fibrosum, flyash, at 40 DEG C, 200r/
Under min rotating speed, stirring i.e. obtains concrete slurry in 0.5 hour；
3) concrete slurry at room temperature carries out concrete segment bricks die to pour into a mould, concussion cast in casting process
Mould, being then placed in pressure, to be that the pressurization indoor pressurization under 2MPa enables slip to pour into a mould in 4 hours closely knit；
4) cast is put into the most foster room and is shaped maintenance 7 hours in 40 DEG C after terminating, and maintenance terminates the rear demoulding and cuts into brick
Bulk, then by fragment of brick in still kettle the most steam-cured, the first stage control temperature be 70 DEG C steam-cured 5 hours, second stage
Be warming up to 90 DEG C steam-cured 3 hours, be finally warming up at 170 DEG C steam-cured 6 hours i.e. obtain concrete segment.
According to the detection method in GB/T 4111-2013, laying bricks that embodiment 1,2,3 is prepared carry out anti-pressure ability,
Drying shrinkage value is tested, and takes three average value measured, acquired results such as following table:
The present invention contrasts quartz sand and often produces side's air-entrained concrete building block saving production cost about 4 yuan, and prepares
The compression strength of building block and the drying shrinkage value that go out are functional, and cost and performance are respectively provided with and significantly enter compared with existing production technology
Step.
Although embodiments of the present invention are described in detail it should be understood that, without departing from the present invention's
In the case of spirit and scope, embodiments of the present invention can be made various change, replace and change.
Claims (1)
1. a low cost sand aerated concrete block production technology, described sand aerated concrete block, by following weight portion
Raw material is made:
No. 32.5 cement 18-21 parts, quick lime 29-30 part, Gypsum Fibrosum 7-8 part, flyash 19-22 part, water 35-37 part, 50-100
Purpose lake sand 126-130 part, aluminium powder 0.135 part, water reducer 1-2 part；
Described water reducer is made up of MNC-AS type aminosulfonate-based superplasticizer and MNC-PCP type poly carboxylic acid series water reducer, wherein the two
Weight ratio is 1:1；
It is characterized in that: production technology comprises the following steps:
1) lake sand pretreatment: dry after natural lake sand water is fully washed, then pulverize and sieve to 50-100 mesh；
2) take the lake sand after No. 32.5 cement, quick lime, aluminium powder, process of weight proportion and be added to the water mix homogeneously pulp,
Be subsequently adding water reducer under 100-200r/min rotating speed, stir 10min, be eventually adding Gypsum Fibrosum, flyash, 35-40 DEG C,
Under 200-300r/min rotating speed, stirring i.e. obtains concrete slurry in 0.5 hour；
3) concrete slurry at room temperature carries out concrete segment bricks die to pour into a mould, casting process shakes casting moulds
Tool, being then placed in pressure, to be that the pressurization indoor pressurization under 2MPa enables slip pour into a mould for 3-5 hour closely knit；
4) cast is put into the most foster room and is shaped maintenance 7 hours in 40 DEG C after terminating, and maintenance terminates the rear demoulding and cuts into brick-shaped,
Then by fragment of brick in still kettle the most steam-cured, the first stage control temperature be 70 DEG C steam-cured 5 hours, second stage is warming up to
90 DEG C steam-cured 3 hours, is finally warming up at 170 DEG C steam-cured 6 hours i.e. obtain concrete segment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610404243.0A CN106082801A (en) | 2016-06-07 | 2016-06-07 | A kind of low cost sand aerated concrete block production technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610404243.0A CN106082801A (en) | 2016-06-07 | 2016-06-07 | A kind of low cost sand aerated concrete block production technology |
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| Publication Number | Publication Date |
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| CN106082801A true CN106082801A (en) | 2016-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610404243.0A Pending CN106082801A (en) | 2016-06-07 | 2016-06-07 | A kind of low cost sand aerated concrete block production technology |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106938908A (en) * | 2017-03-29 | 2017-07-11 | 盐城工学院 | A kind of low water absorption air entrained concrete and preparation method thereof |
| CN113526938A (en) * | 2020-04-21 | 2021-10-22 | 河南新时代建材有限公司 | Production process of aerated concrete block containing tailing quartz sand |
| CN117383884A (en) * | 2023-10-11 | 2024-01-12 | 湖南文理学院 | Anti-seismic anti-cracking aerated concrete block and preparation method thereof |
| CN117383884B (en) * | 2023-10-11 | 2024-06-07 | 湖南文理学院 | Anti-seismic anti-cracking aerated concrete block and preparation method thereof |
-
2016
- 2016-06-07 CN CN201610404243.0A patent/CN106082801A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106938908A (en) * | 2017-03-29 | 2017-07-11 | 盐城工学院 | A kind of low water absorption air entrained concrete and preparation method thereof |
| CN113526938A (en) * | 2020-04-21 | 2021-10-22 | 河南新时代建材有限公司 | Production process of aerated concrete block containing tailing quartz sand |
| CN117383884A (en) * | 2023-10-11 | 2024-01-12 | 湖南文理学院 | Anti-seismic anti-cracking aerated concrete block and preparation method thereof |
| CN117383884B (en) * | 2023-10-11 | 2024-06-07 | 湖南文理学院 | Anti-seismic anti-cracking aerated concrete block and preparation method thereof |
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Application publication date: 20161109 |