CN102173627A - Composite blending material of slag powder and use method - Google Patents

Composite blending material of slag powder and use method Download PDF

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Publication number
CN102173627A
CN102173627A CN2011100426778A CN201110042677A CN102173627A CN 102173627 A CN102173627 A CN 102173627A CN 2011100426778 A CN2011100426778 A CN 2011100426778A CN 201110042677 A CN201110042677 A CN 201110042677A CN 102173627 A CN102173627 A CN 102173627A
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CN
China
Prior art keywords
slag
cement
concrete
calcined gypsum
composite blend
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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
CN2011100426778A
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Chinese (zh)
Inventor
蒋元海
Original Assignee
蒋元海
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Application filed by 蒋元海 filed Critical 蒋元海
Priority to CN2011100426778A priority Critical patent/CN102173627A/en
Publication of CN102173627A publication Critical patent/CN102173627A/en
Pending legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B40/00Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/0028Aspects relating to the mixing step of the mortar preparation
    • C04B40/0039Premixtures of ingredients
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Abstract

The invention relates to a composite blending material of slag power and a use method. Slag, quick lime and calcined gypsum are mixed according to a certain proportion, and then, are finely ground into the composite blending material with specific surface area of 400m<2>/kg to 600m<2>/kg. When the composite blending material is used for producing cement concrete products with a steam curing process, the composite blending material can replace 10-40% of cement with the strength grade above 32.5 in an equal quantity manner; and by using the composite blending material, the production cost of the cement concrete products is lowered, resources are saved, and favorable economic benefits and social benefits are achieved.

Description

A kind of slag powders composite blend and using method
Technical field
The present invention relates to a kind of making and using method of concrete admixture.
Background technology
In the prior art, it is silicate cement or ordinary Portland cement or the composite Portland cement of strength grade more than 32.5 that cement concrete product is produced used gelling material, patent of invention ZL 95116762.6, ZL 03112836.X, ZL 03113366.5, the levigate building sand of admixture is proposed among the ZL 03113256.1, ground slag, ground steel slag, levigate high silica sands etc. are a kind of or two kinds of materials are compound and through the latter made concrete admixture of levigate processing existing application in pile tube is produced, but with slag powders and unslaked lime, calcined gypsum three components are with certain proportion preparation and levigate to certain fineness, be developed into a kind of slag powders composite blend, and under the vapor cure condition, do not see that with the technology of certain proportion equivalent replacement part silicate cement or ordinary Portland cement or composite Portland cement production cement concrete product report is arranged.
Summary of the invention
The object of the present invention is to provide a kind of slag powders composite blend and using method, when producing cement concrete product with this slag powders composite blend at the silicate cement more than 32.5 grades or ordinary Portland cement or composite Portland cement that can equivalent substitution 10%~40% under the vapor cure condition.
Technical scheme of the present invention is: a kind of slag powders composite blend and using method, prepare slag and unslaked lime, calcined gypsum back levigate with certain proportion to specific surface area 400m 2/ kg~600m 2/ kg; Wherein, the proportioning of slag, unslaked lime, three kinds of components of calcined gypsum is 85%~93%: 1%~5%: 6%~10% by mass percentage, and the content of the CaO in the unslaked lime is not less than 80%; Make the SO in the slag powders composite blend behind the calcined gypsum admixture 3Be 3%~6%; The slag powders composite blend can the admixture grinding aid when grinding, and the addition content of grinding aid is not more than 1 ‰ of three constituent materials gross weights; With this composite blend instead of part cement and when steam curing process is produced cement concrete product, can silicate cement or ordinary Portland cement or the composite Portland cement of equivalent substitution 10%~40% strength grade more than 32.5.
The principle of present technique method is: when slag powders substitutes part manufacture of cement cement concrete product, at the unit cement consumption that reduces the concrete preparation simultaneously, caused that the basicity in the concrete reduces; Along with the raising of vapor cure temperature, the quickening of hydrated reaction of cement speed, the hydration reaction speed in the concrete is along with its hydrated cementitious speed of reduction of concrete basicity slows down, and the hydrated product growing amount reduces, and the rate of growth of early age strength of concrete slows down.The slag powders composite blend of the present patent application in levigate production admixture behind the unslaked lime, the levigated lime powder dissolves fast when the maintenance of concrete steam, the fast hydration reaction of lime takes place, when being improved fast, the basicity in concrete also improved concrete hydration temperature, improved the speed of the hydration reaction of cement and slag powders thus, increase the generation quantity of hydrated product, improved concrete early strength; While is along with the raising of vapor cure temperature, after adding a certain proportion of calcined gypsum, the dissolution rate of levigated calcined gypsum is accelerated greatly, can play higher activity excitation effect to the early hydration of slag powders, the activation of calcined gypsum is more much bigger than dihydrate gypsum, and the reaction under the vapor cure condition than in natural curing the time is strong, and its quantity that generates the hydrated product of early-strength type increases greatly, has improved concrete early strength thus.Because scoriaceous grindability is poor, admixture grinding aid during grinding can improve mill efficiency, reduces grinding pow consumption.
The present invention compared with prior art has the following advantages: a kind of slag powders composite blend and using method, substitute part silicate cement or ordinary Portland cement or composite Portland cement with this slag powders composite blend, and when taking steam curing process to produce cement concrete product, can improve the early age strength of concrete and the 28d intensity of cement concrete product, reduce the production cost of cement mixing content and concrete product, economize on resources, have good technical economic benefit and social benefit.
Embodiment
A kind of slag powders composite blend and using method are prepared slag and unslaked lime, calcined gypsum back levigate to specific surface area 400m with certain proportion 2/ kg~600m 2/ kg; Wherein, the proportioning of slag, unslaked lime, three kinds of components of calcined gypsum is 85%~93%: 1%~5%: 6%~10% by mass percentage, and the content of the CaO in the unslaked lime is not less than 80%; Make the SO in the slag powders composite blend behind the calcined gypsum admixture 3Be 3%~6%; The slag powders composite blend can the admixture grinding aid when grinding, and the addition content of grinding aid is not more than 1 ‰ of three constituent materials gross weights; With this composite blend instead of part cement and when steam curing process is produced cement concrete product, can silicate cement or ordinary Portland cement or the composite Portland cement of equivalent substitution 10%~40% strength grade more than 32.5.
Embodiment 1. is preparation in 90%: 2.5%: 7.5% with slag and unslaked lime, calcined gypsum three components by mass percentage, and wherein the content of the CaO of unslaked lime is 91%; It is levigate to specific surface area 430m that three constituent materialss mix the back 2/ kg, SO in the slag powders composite blend 3Be 5.0%; The addition content of grinding aid tri-isopropanolamine is 0.06 ‰ of three constituent materials gross weights during grinding.Replacing 30% strength grade with this slag powders composite blend is that 42.5 ordinary Portland cement is produced concrete drain tile, concrete is after stirring and feeding, carry out the centrifugal forming operation, the quiet again 1.5h that stops, adopt atmospheric steam curing technology, the thermostat temperature of atmospheric steam curing is 90 ℃, always curing time is 6h; Carry out stripping operation behind the atmospheric steam curing, detecting concrete demoulding ultimate compression strength is 35MPa; Water shoot behind the stripping operation is placed on the finished product stockyard, detects its concrete crushing strength behind the 28d and reach 48MPa, requirement is up to state standards.

Claims (1)

1. slag powders composite blend and using method are with slag and unslaked lime, calcined gypsum is levigate to specific surface area 400m with certain proportion preparation back 2/ kg~600m 2/ kg, the addition content of grinding aid is not more than 1 ‰ of three constituent materials gross weights during grinding; It is that 10%~40% manufacture of cement cement concrete product should adopt steam curing process more than 32.5 that the slag powders composite blend replaces strength grade; Its described feature is: the proportioning of slag, unslaked lime, three kinds of components of calcined gypsum is 85%~93%: 1%~5%: 6%~10% by mass percentage, the content of CaO in the unslaked lime is not less than 80%, makes the SO in the slag powders composite blend behind the calcined gypsum admixture 3Be 3%~6%.
CN2011100426778A 2011-02-16 2011-02-16 Composite blending material of slag powder and use method Pending CN102173627A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011100426778A CN102173627A (en) 2011-02-16 2011-02-16 Composite blending material of slag powder and use method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011100426778A CN102173627A (en) 2011-02-16 2011-02-16 Composite blending material of slag powder and use method

Publications (1)

Publication Number Publication Date
CN102173627A true CN102173627A (en) 2011-09-07

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CN2011100426778A Pending CN102173627A (en) 2011-02-16 2011-02-16 Composite blending material of slag powder and use method

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CN (1) CN102173627A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104529213A (en) * 2014-12-17 2015-04-22 河北金泰成建材股份有限公司 Method for preparing high-class concrete admixture with composite powder of steel slag and mineral slag
CN105293966A (en) * 2014-06-05 2016-02-03 镇江市船山第二水泥厂 Sulfoaluminate cement mixing admixture

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1749197A (en) * 2004-09-13 2006-03-22 西安祁连山水泥有限责任公司 Concrete active blending material
CN101041566A (en) * 2007-02-28 2007-09-26 嘉兴学院管桩应用技术研究所 Producing method of three-component composite doping material for high-strength pipe pile production
CN101215137A (en) * 2008-01-01 2008-07-09 桂林工学院 Ferromanganese ore slag concrete blending material and producing method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1749197A (en) * 2004-09-13 2006-03-22 西安祁连山水泥有限责任公司 Concrete active blending material
CN101041566A (en) * 2007-02-28 2007-09-26 嘉兴学院管桩应用技术研究所 Producing method of three-component composite doping material for high-strength pipe pile production
CN101215137A (en) * 2008-01-01 2008-07-09 桂林工学院 Ferromanganese ore slag concrete blending material and producing method thereof

Non-Patent Citations (4)

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Title
《上海大学学报(自然科学版)》 20020630 方军良 等 "粉煤灰的活性激发技术及机理研究进展" 第255-260页 1 第8卷, 第3期 *
《粉煤灰综合利用》 19991231 王智 等 "石灰对粉煤灰活性激发作用的研究进展" 第27-30页 1 , 第1期 *
方军良 等: ""粉煤灰的活性激发技术及机理研究进展"", 《上海大学学报(自然科学版)》, vol. 8, no. 3, 30 June 2002 (2002-06-30), pages 255 - 260 *
王智 等: ""石灰对粉煤灰活性激发作用的研究进展"", 《粉煤灰综合利用》, no. 1, 31 December 1999 (1999-12-31), pages 27 - 30 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105293966A (en) * 2014-06-05 2016-02-03 镇江市船山第二水泥厂 Sulfoaluminate cement mixing admixture
CN104529213A (en) * 2014-12-17 2015-04-22 河北金泰成建材股份有限公司 Method for preparing high-class concrete admixture with composite powder of steel slag and mineral slag
CN104529213B (en) * 2014-12-17 2016-08-24 金泰成环境资源股份有限公司 A kind of preparation method of slag composite powder quality concrete admixture

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Application publication date: 20110907