CN102092998A - Sand aerated concrete building block produced from carbide slag instead of cement and production method thereof - Google Patents

Sand aerated concrete building block produced from carbide slag instead of cement and production method thereof Download PDF

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Publication number
CN102092998A
CN102092998A CN2010105729908A CN201010572990A CN102092998A CN 102092998 A CN102092998 A CN 102092998A CN 2010105729908 A CN2010105729908 A CN 2010105729908A CN 201010572990 A CN201010572990 A CN 201010572990A CN 102092998 A CN102092998 A CN 102092998A
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CN
China
Prior art keywords
cement
carbide slag
aerated concrete
sand aerated
building block
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN2010105729908A
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Chinese (zh)
Inventor
李斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HEFEI DONGKAI NEW BUILDING MATERIALS CO Ltd
Original Assignee
HEFEI DONGKAI NEW BUILDING MATERIALS CO Ltd
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 HEFEI DONGKAI NEW BUILDING MATERIALS CO Ltd filed Critical HEFEI DONGKAI NEW BUILDING MATERIALS CO Ltd
Priority to CN2010105729908A priority Critical patent/CN102092998A/en
Publication of CN102092998A publication Critical patent/CN102092998A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • C04B28/02—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 containing hydraulic cements other than calcium sulfates
    • 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)
  • Processing Of Solid Wastes (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

The invention discloses a sand aerated concrete building block produced from carbide slag instead of cement and a production method thereof. The sand aerated concrete building block is characterized by being prepared from the following materials in percentage by weight: 30-60% of the carbide slag, 0.2-0.7% of aluminite powder paste, 20-50% of quartz sand, 10-20% of cement, 5-17% of lime, 0.8-1.5% of gypsum, and added water accounting for 10-40wt% of the total weight of materials. A finished product is prepared by the steps of adding water to the materials, uniformly stirring and curing with steam. The sand aerated concrete building block can be widely applied to inner and outer walls and bearing walls of high-rise frame structure, and the carbide slag obtained after carbide hydrolyzation is fully utilized to realize environmental friendless and can be used to replace cement to reduce production cost.

Description

Sand aerated concrete block and production method thereof with the production of carbide slag place of cement
Technical field
The present invention relates to a kind of sand aerated concrete block and production method thereof of producing with the carbide slag place of cement.
Background technology
Sand aerated concrete block is to be main raw material with sand, lime, cement, gypsum, and add an amount of foaming agent, through the stirring of starting material processing batching, cast, quietly stop, technological process such as cutting and high-pressure steaming and cultivating and a kind of material of construction of making is mainly used in the interior exterior wall of building etc.In the prior art, the main raw material cement in the sand aerated concrete block accounts for 10%～20% of gross weight percentage, and this makes product cost high.
Carbide slag is that the calcium carbide hydrolysis obtains behind the acetylene gas is the waste residue of main component with calcium hydroxide, is commonly called as carbide slag.At present, for carbide slag locate to be equipped with fill out the sea, fill out ditch, regular stacking, natural subsidence; Utilization to carbide slag has replacing lime cement made of stones, production unslaked lime to be used as carbide raw material, to produce material of construction and be used for environmental improvement etc.The existing problem of this existing mode is:
The mode floor space of 1, fill out the sea, filling out ditch and regular stacking is big, seriously polluted.
2, natural sedimentation treatment effect instability is influenced by environment and meteorological conditions.Particularly in south, amount of rainfall is big, and steam output is little, and throw out water content height can't excavate and utilize at all rainy season.
3, calcium carbide waste slag replacing lime cement made of stones: because cement project technology is complicated, energy consumption is high, floor space is big, investment greatly, market saturation, competitive power again a little less than, limited the development of enterprise.
4, produce unslaked lime as carbide raw material: energy consumption is big, reclaims lime recast carbide raw material and also can only mix 20% of carbide raw material, and is too much unsuitable because reclaim sulfur-bearing in the lime, phosphorus impurities is many, will influence the calcium carbide quality.
5, production lightweight clinker brick: in the production process, calcium carbide waste slag adds as calcareous raw material, and its add-on is limited, generally is no more than 15%～35%, for the big enterprise of bed drain purge, is to be difficult to digestion completely.
Summary of the invention
The present invention is for avoiding above-mentioned existing in prior technology weak point, a kind of sand aerated concrete block and production method thereof of producing with the carbide slag place of cement is provided, utilize the spent material calcium carbide slag production aerating of chemical plant hydrolysis calcium carbide to mix building block, the hydrolysis calcium carbide residue that solves the chemical plant on the one hand pollutes and a reluctant difficult problem, reaches utilization of waste material, reduces the purpose of polluting; Also for reducing the cost of building block, simplify production technique on the other hand.
The present invention adopts following technical scheme for the technical solution problem:
The characteristics of the sand aerated concrete block that the present invention produces with the carbide slag place of cement are that by weight percentage material constitutes:
Carbide slag: 30～60%; Aluminium powder cream: 0.2～0.7%; Quartz sand: 20～50%;
Cement: 10～20%; Lime: 5～17%; Gypsum: 0.8～1.5%;
Other adds water, and by weight percentage, the water yield of adding is 10%～40% of a material total amount.
The characteristics of the production method of sand aerated concrete block of the present invention are to carry out as follows:
A, by each component in the proportioning weighing material, and be equipped with water according to quantity;
B, all each components and water are added stirrer jointly, the stirring through 6～8 minutes mixes and is blank;
C, step 2 gained blank is imported mould, and cut into block base;
D, with the block base of step 3 gained with vapor cure, vapor pressure P is 1.2～1.35Mpa, temperature is 195 ℃～200 ℃, curing time is 8～9 hours; Finish after the maintenance depanning.
Carbide slag is with Ca (OH) 2Be the waste residue of major ingredient, contain a small amount of sulfide and phosphide, carbide slag itself has higher basicity, through with after siliceous material mixes, tentatively carry out hydration reaction, number of gels is more, is that the silicate concrete goods of main raw material are only by CaO and SiO with lime and sand 2The sand grains gluing that the hydrated product that generates will not participated in reaction obtains intensity, the Ca in the carbide slag (OH) together 2Reacting with going ahead of the rest of brick pledge material, thereby the hydrated product in the mixture is rolled up, helping the sclerosis of base substrate and the intensity of raising goods.
Compared with the prior art, beneficial effect of the present invention is embodied in:
1, the present invention utilizes the waste carbide slag of chemical plant hydrolysis calcium carbide, and utilization of waste material is beneficial to environmental protection, reduces production costs.
2, the present invention passes through to add quartz sand at the material compatibility, and through vapor cure, makes product reach the intensity of like product.
3, the present invention adopts vapor cure, enough for a long time abundant maintenance makes its product need not to hang after vapor cure and can directly use, the ultimate compression strength of product can reach 3.5～5.0Mpa, can satisfy the requirement of ultimate compression strength of the interior exterior wall of high-rise, skeleton construction.
Embodiment
Embodiment 1:
Carbide slag 22kg; Lime 12kg; Gypsum 1.1kg; Quartz sand 22kg; Aluminium powder cream 450g;
Above-mentioned all materials are poured in the stirrer, added water 20kg, the back that stirs imports die cuts and is slit into 600 * 240 * 150 calibrated bolck, vapor cure, and vapor pressure P is set to 1.25MPa, curing time 9 hours.
Through surveying, the ultimate compression strength of product is 3.5～5.5MPa.
Embodiment 2:
Carbide slag 24kg; Lime 10kg; Gypsum 0.9kg; Quartz sand 19kg; Aluminium powder 450g;
Above-mentioned described component to going in the stirrer, is added water 20kg, and the back that stirs imports die cuts and is slit into 600 * 240 * 150 calibrated bolcks, vapor cure, and vapor pressure P is 1.25MPa, curing time 9 hours.
Through surveying, product ultimate compression strength is 3.7～5.2MPa.
Embodiment 3:
Carbide slag 20kg; Lime 12kg; Gypsum 1.4kg; Quartz sand 24kg; Aluminium powder cream 450g
Above-mentioned all components are poured in the stirrer, added water 25kg, the back that stirs imports die cuts and is slit into into 600 * 240 * 150 calibrated bolcks, vapor cure, and vapor pressure P is 1.25MPa, curing time 9 hours.
Through surveying, the ultimate compression strength of product is 4.2～5.6MPa.
Embodiment 4:
Carbide slag 18kg; Lime 12kg; Gypsum 2kg; Quartz sand 28kg; Aluminium powder cream 400g
Above-mentioned all materials are poured in the stirrer, added water 40kg, the back that stirs imports die cuts and is slit into 600 * 240 * 150 calibrated bolck, vapor cure, and vapor pressure P is set to 1.25MPa, curing time 9 hours.
Through surveying, the ultimate compression strength of product is 4.1-5.2MPa.
Embodiment 5:
Carbide slag 35kg; Lime 8kg; Gypsum 1.3kg; Quartz sand 14kg; Aluminium powder cream 580g;
Above-mentioned all materials are poured in the stirrer, added water 40kg, the back that stirs imports die cuts and is slit into 600 * 240 * 150 calibrated bolck, vapor cure, and vapor pressure P is set to 1.25MPa, curing time 9 hours.
Through surveying, the ultimate compression strength of product is 3.5-4.7MPa.

Claims (2)

1. sand aerated concrete block of producing with the carbide slag place of cement is characterized in that material by weight percentage constitutes:
Carbide slag: 30～60%; Aluminium powder cream: 0.2～0.7%; Quartz sand: 20～50%;
Cement: 10～20%; Lime: 5～17%; Gypsum: 0.8～1.5%;
Other adds water, and by weight percentage, the water yield of adding is 10%～40% of a material total amount.
2. the production method of the described sand aerated concrete block of claim 1 is characterized in that carrying out as follows:
A, by each component in the proportioning weighing material, and be equipped with water according to quantity;
B, all each components and water are added stirrer jointly, the stirring through 6～8 minutes mixes and is blank;
C, step 2 gained blank is imported mould, and cut into block base;
D, with the block base of step 3 gained with vapor cure, vapor pressure P is 1.2～1.35Mpa, temperature is 195 ℃～200 ℃, curing time is 8～9 hours; Finish after the maintenance depanning.
CN2010105729908A 2010-12-03 2010-12-03 Sand aerated concrete building block produced from carbide slag instead of cement and production method thereof Pending CN102092998A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010105729908A CN102092998A (en) 2010-12-03 2010-12-03 Sand aerated concrete building block produced from carbide slag instead of cement and production method thereof

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Application Number Priority Date Filing Date Title
CN2010105729908A CN102092998A (en) 2010-12-03 2010-12-03 Sand aerated concrete building block produced from carbide slag instead of cement and production method thereof

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103755378A (en) * 2013-12-23 2014-04-30 武汉理工大学 Aerated concrete building block and preparation method thereof
CN103979878A (en) * 2014-05-29 2014-08-13 中国建材检验认证集团厦门宏业有限公司 Waste residue aerated concrete block and production technology thereof
CN104909819A (en) * 2015-06-19 2015-09-16 湖北神州建材有限责任公司 Energy-saving environment-friendly high-performance walling material and production method thereof
CN106587867A (en) * 2016-12-05 2017-04-26 湖北工业大学 Building block made of river sand as raw material and preparation method of building block
CN110372270A (en) * 2019-07-25 2019-10-25 河南环泰建材有限公司 A kind of production technology of the steam-pressing aero-concrete containing carbide slag

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101244912A (en) * 2007-10-31 2008-08-20 汤建新 Production of autoclaved aerated building block material with crystal calcarea lime to partially partial substitute unslacked lime and method thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101244912A (en) * 2007-10-31 2008-08-20 汤建新 Production of autoclaved aerated building block material with crystal calcarea lime to partially partial substitute unslacked lime and method thereof

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103755378A (en) * 2013-12-23 2014-04-30 武汉理工大学 Aerated concrete building block and preparation method thereof
CN103755378B (en) * 2013-12-23 2015-12-02 武汉理工大学 A kind of air-entrained concrete building block and preparation method thereof
CN103979878A (en) * 2014-05-29 2014-08-13 中国建材检验认证集团厦门宏业有限公司 Waste residue aerated concrete block and production technology thereof
CN103979878B (en) * 2014-05-29 2015-12-30 中国建材检验认证集团厦门宏业有限公司 A kind of waste residue air-entrained concrete building block and production technology thereof
CN104909819A (en) * 2015-06-19 2015-09-16 湖北神州建材有限责任公司 Energy-saving environment-friendly high-performance walling material and production method thereof
CN106587867A (en) * 2016-12-05 2017-04-26 湖北工业大学 Building block made of river sand as raw material and preparation method of building block
CN106587867B (en) * 2016-12-05 2019-02-05 湖北工业大学 The building block and preparation method thereof prepared using river sand as raw material
CN110372270A (en) * 2019-07-25 2019-10-25 河南环泰建材有限公司 A kind of production technology of the steam-pressing aero-concrete containing carbide slag

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Application publication date: 20110615