CN104909689A - Autoclaved fly ash aerated concrete building block and preparation method thereof - Google Patents
Autoclaved fly ash aerated concrete building block and preparation method thereof Download PDFInfo
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- CN104909689A CN104909689A CN201510263908.6A CN201510263908A CN104909689A CN 104909689 A CN104909689 A CN 104909689A CN 201510263908 A CN201510263908 A CN 201510263908A CN 104909689 A CN104909689 A CN 104909689A
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- building block
- concrete building
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- aerated concrete
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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
Abstract
The invention relates to an autoclaved fly ash aerated concrete building block and a preparation method thereof, and relates to the technical field of autoclaved aerated concrete building blocks. According to the invention, fly ash, cement, silica sand, quicklime, gypsum, aluminum powder, sodium hydroxide, sodium carbonate and clear water are subjected to the steps of crushing, stirring, heating and pressurizing, sieving, casting, hot chamber static placement, and the like, such that the autoclaved fly ash aerated concrete building blocks are prepared. According to the preparation method provided by the invention, autoclaved aerated concrete building block preparation cost and raw material cost are reduced; fly ash utilization rate is improved; and the quality of the prepared concrete building blocks is same as that of traditional autoclaved aerated concrete building blocks. Various raw materials are developed while the quality is ensured.
Description
Technical field:
The present invention relates to autoclave aerated concrete building block technical field field, be specifically related to a kind of aerated coal ash concrete building block and preparation method thereof.
Background technology:
Autoclave aerated concrete building block is for raw material with siliceous material and calcareous material, through batching cast, expansion of getting angry, cut the New Building Materials of the light heat-insulating that the technique such as steam-cured is made, production and the applicating history in more than 60 years is had in China, owing to having feature that is lightweight, good heat insulating, being widely used in industry with covil construction, is the novel wall material that production technology and utilisation technology are the most ripe at present.
Autoclave aerated concrete building block is lightweight, is divided into 300 ~ 800kg/m3 by different stage, is only about 1/3 of clay brick, can simplify basis to the Highrise buildings in earth bearing strength district lower, improves shock resistance, reduces buildings deadweight.Because air-entrained concrete building block has good thermal and insulating performance, heating and energy consumption for cooling can also be saved, when there is identical heat insulation effect with clay brick, greatly can reduce thickness of wall body, save material usage, reduce construction investment, increase the usable floor area of building simultaneously, also because air-entrained concrete building block is lightweight, block shape large, construction and conveying efficiency can be improved, shorten construction period, reduce construction costs.
Flyash, be receive to catch the thin ash got off from the flue gas after coal combustion, flyash is the primary solids refuse that coal-burning power plant discharges.Flyash is one of industrial residue that the current discharge capacity of China is larger, and along with the development of power industry, the flyash quantity discharged of coal-burning power plant increases year by year.A large amount of flyash does not add process, will produce airborne dust, river can be caused to silt up, and toxic chemical substance wherein also can work the mischief if atmosphere pollution enters water system to human body and biology.At present general all using flyash as concrete adulterant, in order to increase operation rate further, now work out a kind of coal ash autoclaved air-entrained concrete building block and preparation method thereof, the range of application of the flyash being is more wide.
Summary of the invention:
Technical problem to be solved by this invention is to provide a kind of aerated coal ash concrete building block and preparation method thereof, the coal ash concrete blocks that the method makes reduces cost of manufacture and the raw materials cost of autoclave aerated concrete building block, improve the utilization ratio of flyash, and the concrete segment be made into is identical with traditional autoclave aerated concrete building block qualitatively.
Technical problem to be solved by this invention adopts following technical scheme to realize:
A kind of aerated coal ash concrete building block, according to the mass fraction, is prepared from by following component:
Flyash 100-150 part
Cement 20-30 part
Silica sand 15 ~ 20 parts
Unslaked lime 10 ~ 35 parts
Gypsum 10-15 part
Aluminium powder 0.1 ~ 0.3 part
Sodium hydroxide 0.1-0.2 part
Sodium carbonate 0.1-0.3 part
Clear water 180-230 part
Wherein preferred version is further:
Flyash 120-150 part
Cement 20-25 part
Silica sand 15 ~ 20 parts
Unslaked lime 10 ~ 25 parts
Gypsum 10-15 part
Aluminium powder 0.1 ~ 0.25 part
Sodium hydroxide 0.1-0.15 part
Sodium carbonate 0.1-0.3 part
Clear water 200-230 part.
A preparation method for aerated coal ash concrete building block, comprises the following steps:
(1) get flyash, silica sand and gypsum by proportioning for subsequent use, wearing into fineness is 0.05mm, after add said ratio 1/2 water to stir into mortar for subsequent use;
(2) mortar being poured into order number is filter in 100 object screen clothes, and the macrobead thing that filtering is sticked together, has greatly improved to the density of later stage building block;
(3) be poured in sealed vessel after filtering and heat, pressurize, temperature is set to 100-120 DEG C, pressure is set to 1.4atm, pressurize after 2 hours and takes out, can increase the intensity of raw material like this, also can play the effect of raising hardness to the building block of post-production;
(4) mortar of taking-up is put in stirrer, and add remaining water and stir together;
(5) another preparing quick lime, broken, pulverize thing is for subsequent use, fineness controls between 0.05-0.08mm;
(6) by mortar, calcium lime powder and cement mixing, stir, when temperature reaches 80 DEG C, admixture aluminium powder, sodium hydroxide and sodium carbonate, stir;
(7) then pour into a mould, through hot cell is quiet stop after cutting, namely obtain coal ash autoclaved air-entrained concrete building block after steam press maintenance.
The invention has the beneficial effects as follows: the cost of manufacture and the raw materials cost that reduce autoclave aerated concrete building block, improve the utilization ratio of flyash, and the concrete segment be made into, identical with traditional autoclave aerated concrete building block qualitatively, develops plurality of raw materials under the prerequisite of ensuring the quality of products.
Embodiment:
The technique means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete example, setting forth the present invention further.
Embodiment 1: choose 150 parts, flyash, cement 20 parts, silica sand 15 parts, unslaked lime 25 parts, 15 parts, gypsum, aluminium powder 0.2 part, 0.15 part, sodium hydroxide, 0.15 part, sodium carbonate and 220 parts, clear water by mass fraction;
Flyash, silica sand and gypsum are mixed, wear into the powder that fineness is 0.05mm, it is for subsequent use that the water then adding 110 parts stirs into mortar; Mortar being poured into order number is filter in 100 object screen clothes, and the macrobead thing that filtering is sticked together, has greatly improved to the density of later stage building block; Be poured in sealed vessel after filtration and heat, pressurize, temperature is set to 100 DEG C, pressure is set to 1.4atm, pressurizes after 2 hours and takes out, can increase the intensity of raw material like this, also can play the effect improving hardness to the building block of post-production; The mortar of taking-up is put in stirrer, and the water adding 110 parts stirs together; Another preparing quick lime, broken, pulverize thing is for subsequent use, fineness is 0.06mm; By mortar, calcium lime powder and cement mixing, stir, when temperature reaches 80 DEG C, admixture aluminium powder, sodium hydroxide and sodium carbonate, stir; Then pour into a mould, quietly through hot cell stop cutting after 10 hours, namely steam press maintenance obtained coal ash autoclaved air-entrained concrete building block after 5 hours.
Embodiment 2: choose 120 parts, flyash, cement 25 parts, silica sand 20 parts, unslaked lime 25 parts, 10 parts, gypsum, aluminium powder 0.2 part, 0.1 part, sodium hydroxide, 0.2 part, sodium carbonate and 200 parts, clear water by mass fraction;
Flyash, silica sand and gypsum are mixed, wear into the powder that fineness is 0.05mm, it is for subsequent use that the water then adding 100 parts stirs into mortar; Mortar being poured into order number is filter in 100 object screen clothes, and the macrobead thing that filtering is sticked together, has greatly improved to the density of later stage building block; Be poured in sealed vessel after filtration and heat, pressurize, temperature is set to 110 DEG C, pressure is set to 1.4atm, pressurizes after 2 hours and takes out, can increase the intensity of raw material like this, also can play the effect improving hardness to the building block of post-production; The mortar of taking-up is put in stirrer, and the water adding 110 parts stirs together; Another preparing quick lime, broken, pulverize thing is for subsequent use, fineness is 0.08mm; By mortar, calcium lime powder and cement mixing, stir, when temperature reaches 80 DEG C, admixture aluminium powder, sodium hydroxide and sodium carbonate, stir; Then pour into a mould, quietly through hot cell stop cutting after 10 hours, namely steam press maintenance obtained coal ash autoclaved air-entrained concrete building block after 5 hours.
Embodiment 3: choose 110 parts, flyash, cement 25 parts, silica sand 20 parts, unslaked lime 25 parts, 10 parts, gypsum, aluminium powder 0.3 part, 0.2 part, sodium hydroxide, 0.3 part, sodium carbonate and 180 parts, clear water by mass fraction;
Flyash, silica sand and gypsum are mixed, wear into the powder that fineness is 0.05mm, it is for subsequent use that the water then adding 90 parts stirs into mortar; Mortar being poured into order number is filter in 100 object screen clothes, and the macrobead thing that filtering is sticked together, has greatly improved to the density of later stage building block; Be poured in sealed vessel after filtration and heat, pressurize, temperature is set to 110 DEG C, pressure is set to 1.4atm, pressurizes after 2 hours and takes out, can increase the intensity of raw material like this, also can play the effect improving hardness to the building block of post-production; The mortar of taking-up is put in stirrer, and the water adding 90 parts stirs together; Another preparing quick lime, broken, pulverize thing is for subsequent use, fineness is 0.05mm; By mortar, calcium lime powder and cement mixing, stir, when temperature reaches 80 DEG C, admixture aluminium powder, sodium hydroxide and sodium carbonate, stir; Then pour into a mould, quietly through hot cell stop cutting after 10 hours, namely steam press maintenance obtained coal ash autoclaved air-entrained concrete building block after 5 hours.
More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (2)
1. an aerated coal ash concrete building block, according to the mass fraction, is prepared from by following component:
Flyash 100-150 part, cement 20-30 part, silica sand 15 ~ 20 parts, unslaked lime 10 ~ 35 parts, gypsum 10-15 part, aluminium powder 0.1 ~ 0.3 part, sodium hydroxide 0.1-0.2 part, sodium carbonate 0.1-0.3 part and clear water 180-230 part;
Wherein preferred version is further: flyash 120-150 part, cement 20-25 part, silica sand 15 ~ 20 parts, unslaked lime 10 ~ 25 parts, gypsum 10-15 part, aluminium powder 0.1 ~ 0.25 part, sodium hydroxide 0.1-0.15 part, sodium carbonate 0.1-0.3 part and clear water 200-230 part.
2. a preparation method for aerated coal ash concrete building block, is characterized in that: comprise the following steps:
(1) get flyash, silica sand and gypsum by proportioning for subsequent use, wearing into fineness is 0.05mm, after add said ratio 1/2 water to stir into mortar for subsequent use;
(2) mortar being poured into order number is filter in 100 object screen clothes, and the macrobead thing that filtering is sticked together, has greatly improved to the density of later stage building block;
(3) be poured in sealed vessel after filtering and heat, pressurize, temperature is set to 100-120 DEG C, pressure is set to 1.4atm, pressurize after 2 hours and takes out, can increase the intensity of raw material like this, also can play the effect of raising hardness to the building block of post-production;
(4) mortar of taking-up is put in stirrer, and add remaining water and stir together;
(5) another preparing quick lime, broken, pulverize thing is for subsequent use, fineness controls between 0.05-0.08mm;
(6) by mortar, calcium lime powder and cement mixing, stir, when temperature reaches 80 DEG C, admixture aluminium powder, sodium hydroxide and sodium carbonate, stir;
(7) then pour into a mould, through hot cell is quiet stop after cutting, namely obtain coal ash autoclaved air-entrained concrete building block after steam press maintenance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510263908.6A CN104909689A (en) | 2015-05-21 | 2015-05-21 | Autoclaved fly ash aerated concrete building block and preparation method thereof |
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| CN201510263908.6A CN104909689A (en) | 2015-05-21 | 2015-05-21 | Autoclaved fly ash aerated concrete building block and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112521078A (en) * | 2020-12-21 | 2021-03-19 | 泰安欧士达环保材料有限公司 | Production method of autoclaved aerated concrete block and autoclaved aerated concrete block |
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2015
- 2015-05-21 CN CN201510263908.6A patent/CN104909689A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112521078A (en) * | 2020-12-21 | 2021-03-19 | 泰安欧士达环保材料有限公司 | Production method of autoclaved aerated concrete block and autoclaved aerated concrete block |
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