CN1187473A - Low-clinker high-early setting slag cement - Google Patents

Low-clinker high-early setting slag cement Download PDF

Info

Publication number
CN1187473A
CN1187473A CN97100114A CN97100114A CN1187473A CN 1187473 A CN1187473 A CN 1187473A CN 97100114 A CN97100114 A CN 97100114A CN 97100114 A CN97100114 A CN 97100114A CN 1187473 A CN1187473 A CN 1187473A
Authority
CN
China
Prior art keywords
cement
slag
low
clinker
early
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
CN97100114A
Other languages
Chinese (zh)
Inventor
郭茂胜
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CN97100114A priority Critical patent/CN1187473A/en
Publication of CN1187473A publication Critical patent/CN1187473A/en
Pending legal-status Critical Current

Links

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
    • C04B7/14—Cements containing slag
    • C04B7/147—Metallurgical slag
    • C04B7/153—Mixtures thereof with other inorganic cementitious materials or other activators
    • 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
    • C04B7/14—Cements containing slag
    • C04B7/147—Metallurgical slag
    • C04B7/153—Mixtures thereof with other inorganic cementitious materials or other activators
    • C04B7/21—Mixtures thereof with other inorganic cementitious materials or other activators with calcium sulfate containing 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

Landscapes

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

Abstract

A low-clinker, early-solidifying, early-strengthening slag cement is prepared from large-quantity slag, less clinker, appropriate gypsum and micro CaCl2 as catalyst through pulverizing, and conforms with the standards GB1344-92 and GBJ50204-92. It features environmental protection, saving energy, low cost, high output and better physical performance, and can be used for non-prestressed, non-steam-cured concrete structure.

Description

Low-clinker high-early setting slag cement
The present invention system belongs to building material field, is the improvement to slag cement.
In present slag cement was produced, GB1344-92 requires: the slag addition content was 20～70) %, in actual production, be subjected to the restriction of work in-process clinker quality, produce 425 #, 325 #Slag cement, its addition content is generally 20～50%.If slag addition content height, the slag cement setting and harden of making is slow, and bleeding is big, and early strength is low, and the label fall is big.When the slag addition content is low, easily cause the higher soundness of cement of fCaO defective; Therefore, still have some shaft kiln cement plants now, can not in a planned way produce 425 #Slag cement.
And singly the mixing or the compound activator technology of vitriol such as calcined gypsum of being invented in recent years and alunite, aluminate class slag cement, although can shorten 1.5～2.0 hours time of coagulation relatively, folding strength improved 35～40% in 3 days, 7 days; Ultimate compression strength improved 20～25% in 28 days; It is low still to exist length time of coagulation (general initial set 3.5 hours, final set 6.5 hours) big, the scoriaceous volume of bleeding, and exciting agent processing investment is big, the cement production process complexity, and source of pollution increase, and overall benefit is low, the problem of poor practicability.Relevant activated slag technology, majority is to contain K +, Na +Alkaline matter, though this invention can increase substantially the slag addition content, improved the slag cement physicals.But, in concrete works, existing alkali---the problem of aggregate reaction and workability poor (requiring Na2O. 0.6%) has a strong impact on buildings life-span and construction quality.Simultaneously, the slag specific surface area of this invention technical requirements is big, mixes the method for homogenizing behind employing slag, the grog difference grinding, and it is big that this technology exists facility investment, the energy consumption height, and the metering process complexity, comprehensive benefit is poor, produces the problem of implementing difficulty.
It is simple to the purpose of this invention is to provide a kind of production technique, and raw material mostly is the low-clinker high-early setting slag cement of waste residue.Its fast solidifying, good water-retaining property, intensity height, cost are low, the concrete grade height of preparation, good endurance, environmental protection, energy-saving benefit are remarkable.
Low-clinker high-early setting slag cement of the present invention is to be ground jointly by general grog, gypsum, slag and catalyzer to form.The weight percent of its composition is: slag 50～70, gypsum 5～8, grog 22～45, catalyzer CaCl 20.5～0.8 wherein: clinker strength R 28 53MPa, fCaO 3.5%, C 3A  5.5.Catalyzer is to be the Chemicals or the industry byproduct of major ingredient so that water or Calcium Chloride Powder Anhydrous to be arranged.
The present invention is theoretical and electrolytical catalytic theory according to germ nucleus, in low clinker slag cement, adds 0.5～0.8% CaCl 2Catalyzer all is ionized into ion, Cl after this material is water-soluble --Be adsorbed in the C in the cement 3S, C 2The S surface has increased the dispersity of cement granules, quickens the formation and the growth of cement initial stage hydration reaction and hydrate nucleus, thereby has played katalysis.Simultaneously, CaCl 2Also with cement in C 3A, C 3AF, CaO, Ca (OH) 2Act on, form the calcium chloroaluminate (C of a large amount of non-active types 3ACaCl 210H 2O) and oxychlorination calcium (3CaOCaCl12H 2O) sosoloid complex compound and new CaCl 2, make solid phase ratio increase in the cement slurry.This ionogen has promoted C again 3A and C 3SO 4Reaction, form ettringite (C 3A3C 3SO 43H 2O) double salt, and the degree of compactness acceleration that volumetric expansion makes cement takes place, both actings in conjunction promote the raising of setting and harden, early strength and the water-retentivity of low clinker slag cement.At C 3Cl 2Effect under, the C in the cement 4AH 13Have precedence over C 3AH 6Generate, also impel low clinker slag cement to obtain higher-strength.
Low-clinker high-early setting slag cement of the present invention aborning, the highest 70% the abandoned mine slag of mixing has been saved the grog consumption, has improved the soundness of cement qualification rate, has reduced energy consumption and production cost.Under the condition of not extending raw material, firing system, tap the latent power or increase slag drying, cement grinding equipment, cement output is doubled.CaCl at trace 2Under the catalyst action, cement of the present invention, good water-retaining property, fast solidifying, can be controlled within 1.0～3.0 hours its time of coagulation.Intensity can reach 50～80% of grog in 3 days, 7 days, and cement mark is approaching or surpass grog, is shaft kiln cement plant stably manufactured 425 #Structural Engineering cement has been opened up new way.The CaCl that present technique is selected for use 2Catalyzer, aborning can with itself and slag, sulfate slag, grog, Wingdale, flyash, coal ash slag respectively or mixed preparing form, its cement consumption is 3～5% admixture, mixes common grinding in the cement component raw material, so the present invention has good practicality and operability.
The micro-C that the present invention mixes in cement 3Cl 2, 80% is non-active type Cl in 28 days cement sands slurry and concrete -So low-clinker high-early setting slag cement of the present invention, remove and to reach significant points (as crane girder, roof truss etc.), special engineering greatly (as close high-voltage power supply, direct supply in high humidity, change of level, potroom), use in the prestressed reinforced concrete outside, this cement all can use in usually going up the reinforced concrete works of building structure, but necessary vibration compacting can not adopt vapor cure.
Examples comparative:
Numbering Component % Specific surface area cm2/g Mark level amount denseness % uses Sulphur trioxide % Time of coagulation h:min Folding strength mpa Ultimate compression strength mpa
Grog Slag Gypsum Catalyzer CaCl 2 Initial set Final set 3 days 7 days 28 days 3 days 7 days 28 days
Clinker strength ?94 ??6 ??3000 ??25.50 ??2.80 ?2：20 ??3：40 ???5.2 ???6.1 ??7.4 ??30.1 ??40.7 ??53.0
Prior art preparation sample ?44 ?50 ??6 ??3100 ??26.00 ??3.05 ?5：45 ??8：50 ???2.9 ???4.7 ??7.5 ??10.8 ??18.8 ??40.2
?34 ?60 ??6 ??3200 ??25.50 ??3.20 ?7：55 ??11：10 ???2.1 ???3.3 ??6.2 ???8.5 ??14.4 ??34.2
The technology of the present invention sample D1 ?44 ?50 ??6 ????0.60 ??3200 ??24.60 ??3.05 ?1：20 ??2：10 ???5.3 ???6.7 ??9.1 ??21.1 ??35.3 ??54.2
D2 ?34 ?60 ??6 ????0.65 ??3100 ??24.40 ??3.30 ?1：30 ??2：20 ???4.7 ???5.9 ??8.9 ??18.1 ??29.8 ??50.1
D3 ?24 ?70 ??6 ????0.75 ??3200 ??24.10 ??3.51 ?1：25 ??2：30 ??3.9 ???6.1 ??8.6 ??16.2 ??28.8 ??49.3
This shows that adopting the present invention is 53mp in intensity aGrog in, add 50～70% slag, can produce 425 #Slag cement, and this cement has that high-early, good water-retaining property, cost are low, energy-conserving and environment-protective, characteristics that cement total output is high.

Claims (1)

  1. A kind of is the low-clinker high-early setting slag cement of major ingredient with the slag, contains grog, gypsum, it is characterized in that: the CaCl that also adds trace 2Catalyzer.It is characterized in that: low-clinker high-early setting slag cement is by weight ratio: slag 50～70%, grog 22～45%, gypsum 5～8%, CaCl 20.5～0.8%.
CN97100114A 1997-01-06 1997-01-06 Low-clinker high-early setting slag cement Pending CN1187473A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN97100114A CN1187473A (en) 1997-01-06 1997-01-06 Low-clinker high-early setting slag cement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN97100114A CN1187473A (en) 1997-01-06 1997-01-06 Low-clinker high-early setting slag cement

Publications (1)

Publication Number Publication Date
CN1187473A true CN1187473A (en) 1998-07-15

Family

ID=5164787

Family Applications (1)

Application Number Title Priority Date Filing Date
CN97100114A Pending CN1187473A (en) 1997-01-06 1997-01-06 Low-clinker high-early setting slag cement

Country Status (1)

Country Link
CN (1) CN1187473A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100453488C (en) * 2005-06-07 2009-01-21 上海第三航务工程局科学研究所 Silicate cement
CN101462864B (en) * 2007-12-21 2012-01-25 同济大学 Novel composite gel material and preparation
CN102491655A (en) * 2011-11-21 2012-06-13 武汉理工大学 Portland cement made from self-pulverized clinker and slag and preparation method for Portland cement
CN115286268A (en) * 2022-08-23 2022-11-04 辛集市钢信新型建材有限公司 Slag recycled cement with high compressive strength and preparation method thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100453488C (en) * 2005-06-07 2009-01-21 上海第三航务工程局科学研究所 Silicate cement
CN101462864B (en) * 2007-12-21 2012-01-25 同济大学 Novel composite gel material and preparation
CN102491655A (en) * 2011-11-21 2012-06-13 武汉理工大学 Portland cement made from self-pulverized clinker and slag and preparation method for Portland cement
CN102491655B (en) * 2011-11-21 2013-06-12 武汉理工大学 Portland cement made from self-pulverized clinker and slag and preparation method for Portland cement
CN115286268A (en) * 2022-08-23 2022-11-04 辛集市钢信新型建材有限公司 Slag recycled cement with high compressive strength and preparation method thereof

Similar Documents

Publication Publication Date Title
CN101182143B (en) Preparation of composite high-expansion cementing material by using industrial slag and preparation technique thereof
CN111689752A (en) Multi-source solid waste base grouting cementing material and preparation method and application thereof
CN106316326B (en) The method for preparing construction material using desulfurized gypsum
CN113135727B (en) Red mud-based material for roadbed water stabilization layer and preparation method thereof
CN101269942B (en) Phosphor slag power concrete mortar
CN101423355A (en) Sulphoaluminates expansion agent prepared by industrial residue used in cement or concrete
CN102765893B (en) Method for preparing sulphoaluminate special cement clinker from waste residue fluorine gypsum and red mud
CN112456946A (en) Nano micro-expansion inorganic grouting material and preparation method thereof
CN109399975B (en) Red mud sulfur fixation ash steel slag powder coupling excitation cementing material and application thereof
CN101885589A (en) Compound sulfate cement
CN102167536B (en) Secondary ettringite type expanding agent and preparation method and application thereof
CN114804807B (en) Full-solid waste soft foundation sludge solidified powder and preparation method thereof
CN101352893B (en) Method for producing dry-mixed masonry motar using semidry desulfurized gypsum and blast-furnace slag
CN102515585B (en) Method for utilizing semidry desulfurization waste residues to prepare masonry cement
CN102643107B (en) Calcination-free desulfurized gypsum-based ceramsite concrete perforated brick
CN105481321A (en) Modified gypsum base screed and preparation and application thereof
CN103113078A (en) Pre-mixed building mortar making full use of solid wastes
CN1061328C (en) Method for preparing composite concrete additive by using ultrafine fly ash
CN1092747A (en) High-efficiency concrete expansion admixture and manufacture method thereof
CN1187473A (en) Low-clinker high-early setting slag cement
CN106587817A (en) Preparation method of high-adaptability concrete
CN101215110B (en) Integral utilization treatment method for aerating concrete waste material
CN108585575A (en) Cement retarder and its preparation method and application
CN1101790C (en) Process for preparing cement by wet grinding of waste slags
CN111348849B (en) Hydraulic lime and preparation method thereof

Legal Events

Date Code Title Description
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C06 Publication
PB01 Publication
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication