CN1173472A - Mixed material of flyash with cement - Google Patents

Mixed material of flyash with cement Download PDF

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Publication number
CN1173472A
CN1173472A CN97106835A CN97106835A CN1173472A CN 1173472 A CN1173472 A CN 1173472A CN 97106835 A CN97106835 A CN 97106835A CN 97106835 A CN97106835 A CN 97106835A CN 1173472 A CN1173472 A CN 1173472A
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CN
China
Prior art keywords
cement
flyash
coal ash
mixed material
kilogram
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.)
Granted
Application number
CN97106835A
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Chinese (zh)
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CN1070155C (en
Inventor
马文忠
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to CN97106835A priority Critical patent/CN1070155C/en
Publication of CN1173472A publication Critical patent/CN1173472A/en
Application granted granted Critical
Publication of CN1070155C publication Critical patent/CN1070155C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • C04B7/00—Hydraulic cements
    • C04B7/24—Cements from oil shales, residues or waste other than slag
    • C04B7/243—Mixtures thereof with activators or composition-correcting additives, e.g. mixtures of fly ash and alkali activators
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

A powdered coal ash material as additive of cement contains powdered coal ash (50-80 kg), alkaline trigger (calcium hydroxide, 19-40 kg), and additive (sodium silicate, 1-5 kg), and features high quantity to be mixed (up to 30%), high quality conforming GB175-92 and GB1344-92, and high technical specification comparable with ordinary silicon cement 425R. It can replace slag.

Description

A kind of coal ash and cement mixed material
The invention belongs to material of construction, exactly is a kind of coal ash and cement mixed material.
Cement is the important materials of the development of the national economy.Along with the development of China's modernization, the demand of cement increases year by year.Ore deposit as traditional water cement mixture main source is cut on the one hand, the resource critical shortage, and price rises steadily.On the other hand, Power Plant in China every year is waste material---the flyash of ten million ton of the number of discharge all, and pile up like a mountain again, both taken a large amount of soils, polluted environment again, becomes well-known public hazards.Adopt flyash to make cement mixture, both flyash can be turned waste into wealth, turn harm into good, can alleviate the contradiction of ore deposit quarrel shortage of resources again, promote the sound development of Cement industry at the existing phase of history of China.But, because flyash activity is lower, is incorporated in the cement as compound with flyash and uses, the amplitude of its strength degradation is bigger, and especially the early strength development is slow.Therefore, the incorporation of flyash is restricted, and generally can only mix 10-15%, and incorporation is low.
The object of the present invention is to provide and a kind ofly can substitute ore deposit quarrel, incorporation is big, early strength is high coal ash and cement mixed material.
The object of the present invention is achieved like this: a kind of coal ash and cement mixed material, form by flyash, alkali-activator (calcium hydroxide) and admixture (water glass), it is characterized in that being by weight ratio: flyash 50-80 kilogram, alkali-activator (calcium hydroxide) 19-40 kilogram, admixture (water glass) 1-5 kilogram.Behind batching, mix stir, roll, finished product.
Through testing by GB12957-91 " the industrial residue activity test way of cement mixture ", get 30 kilograms of this coal ash and cement mixed materials, 70 kilograms of 525R cement clinkers, its side test result is: 7 days ultimate compression strength is 42.9MPa, folding strength is 6.4MPa; 28 days ultimate compression strength is 46.6MPa, and folding strength is 7.1MPa; Initial set 2 hours, final set 3 and a half hours.Quality reaches GB175-92, the requirement of BG1344-92 technological standard; And its wear resisting property is good, and later strength also improves to some extent, and its basic mechanical design feature satisfies the service requirements of 425R ordinary portland cement.
Simultaneously, the present invention replaces the ore deposit quarrel as cement mixture, both can enlarge the source of cement mixture, alleviate the contradiction of ore deposit quarrel inadequate resource, can make full use of waste material---the flyash that discharge in the fuel-burning power plant again, reduce ash occupation of land and environmental pollution, also can reduce cement cost.Compare with shrend ore deposit quarrel, its cost descends 50%, has remarkable economic efficiency and social benefit.
In addition, production technique of the present invention is simpler, and facility investment is few, gathers materials on the spot in the power station that can be widely used in each firepower, produces the cement mixture of super quality and competitive price.
Embodiment:
75 kilograms in flyash, 24 kilograms of alkali-activators (calcium hydroxide), 1 kilogram of admixture (water glass), behind batching, mix stir, roll, finished product.

Claims (1)

1, a kind of coal ash and cement mixed material, form by flyash, alkali-activator (calcium hydroxide) and admixture (water glass), it is characterized in that being by weight ratio: flyash 50-80 kilogram, alkali-activator (calcium hydroxide) 19-40 kilogram, admixture (water glass) 1-5 kilogram.
CN97106835A 1997-01-29 1997-01-29 Mixed material of flyash with cement Expired - Fee Related CN1070155C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN97106835A CN1070155C (en) 1997-01-29 1997-01-29 Mixed material of flyash with cement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN97106835A CN1070155C (en) 1997-01-29 1997-01-29 Mixed material of flyash with cement

Publications (2)

Publication Number Publication Date
CN1173472A true CN1173472A (en) 1998-02-18
CN1070155C CN1070155C (en) 2001-08-29

Family

ID=5169042

Family Applications (1)

Application Number Title Priority Date Filing Date
CN97106835A Expired - Fee Related CN1070155C (en) 1997-01-29 1997-01-29 Mixed material of flyash with cement

Country Status (1)

Country Link
CN (1) CN1070155C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1081169C (en) * 1999-08-31 2002-03-20 石卫兵 High calcium flyash composite blending material
CN102092973A (en) * 2010-12-17 2011-06-15 南京工业大学 Flyash cement and preparation method thereof
CN106082753A (en) * 2016-06-12 2016-11-09 陕西建业环保科技有限公司 Superfine powder concrete admixture

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1081169C (en) * 1999-08-31 2002-03-20 石卫兵 High calcium flyash composite blending material
CN102092973A (en) * 2010-12-17 2011-06-15 南京工业大学 Flyash cement and preparation method thereof
CN106082753A (en) * 2016-06-12 2016-11-09 陕西建业环保科技有限公司 Superfine powder concrete admixture

Also Published As

Publication number Publication date
CN1070155C (en) 2001-08-29

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