WO2009076913A1 - Mixture for controlling the set time of cements based on cement clinker, method of control and its use - Google Patents

Mixture for controlling the set time of cements based on cement clinker, method of control and its use Download PDF

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Publication number
WO2009076913A1
WO2009076913A1 PCT/CZ2007/000114 CZ2007000114W WO2009076913A1 WO 2009076913 A1 WO2009076913 A1 WO 2009076913A1 CZ 2007000114 W CZ2007000114 W CZ 2007000114W WO 2009076913 A1 WO2009076913 A1 WO 2009076913A1
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WIPO (PCT)
Prior art keywords
mass
mixture
cement
controlling
set time
Prior art date
Application number
PCT/CZ2007/000114
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French (fr)
Inventor
Miroslav Penkov
Original Assignee
Penpor S.R.O.
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 Penpor S.R.O. filed Critical Penpor S.R.O.
Priority to CZ200819593U priority Critical patent/CZ18784U1/en
Priority to PCT/CZ2007/000114 priority patent/WO2009076913A1/en
Publication of WO2009076913A1 publication Critical patent/WO2009076913A1/en

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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
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/0076—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials characterised by the grain distribution
    • C04B20/008—Micro- or nanosized fillers, e.g. micronised fillers with particle size smaller than that of the hydraulic binder
    • 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
    • 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
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/0068—Ingredients with a function or property not provided for elsewhere in C04B2103/00
    • C04B2103/0088—Compounds chosen for their latent hydraulic characteristics, e.g. pozzuolanes
    • 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
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/20—Retarders
    • C04B2103/22—Set retarders
    • 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

Definitions

  • Mixture for controlling the set time of cements based on cement clinker consisting of a particle material of latently hydraulically active substances.
  • admixtures for controlling the set time are known, where calcium sulphate is replaced with another system containing sulfonated polyphenolate or ligninsulfonate, alkaline carbonate, hydrogencarbonate, hydroxide or silicate or, as the case may be, other admixtures controlling the set time, such as, for example, sodium-potassium tartrate, boric acid (US 3 689 294, US 4 906 912, US 4 551 176 patents) .
  • the goal of this invention is to find a mixture for controlling the set time of cement with which it is possible to substitute/replace gypsum as for the amount added to the cement clinker and the time of setting and at the same time decreases the water-cement ratio of the fresh cement mixture.
  • the invention solves the problem by means of a mixture for controlling the set time of cement, which control the set of the cement in time.
  • the mixture consists of a particle material of latently hydraulically active substances containing 0.3% to 60% by mass CaO, 0.5% to 65% by - mass SiO 2 , 3% to 34% by mass Al 2 O 3 , 2% to 19% by mass Fe 2 O 3 , 0.5% to 10% by mass MgO, 0.5% to 36% by mass C, the material also contains TiO 2 , SO 3 , P 2 O 5 , K 2 O, Na 2 O in the amount from 0.04% to 11% by mass, the size of the particles is 1 ⁇ m to 450 ⁇ m , with more than 50% by mass of the mass particles of this mixture larger than 40 ⁇ m.
  • the amount of mixture used for controlling the set time is 0.01 to 50% by mass of the final cement mixture.
  • Cements based on cement clinker may contain constituents such as limestone and/or blast furnace slag and/or , fly ash and/or silica fume and/or natural and/or artificial pozzolanic materials and/or burnt shale.
  • the solution according to the invention is based on systematic experiments during which it was discovered that the mixture consisting of latently hydraulic substances prepared in chemically expressed ratios according to the invention and consisting only of particles larger than 40 ⁇ m has a surprising effect, i.e. if added to the ground cement clinker, it has the ability to regulate setting of the prepared mixture in time. These regulation properties are so significant that according to the invention, the mixture need not be used in great amount (10% by mass and more) to control the setting time of cement clinker.
  • the mixture prepared in chemically expressed ratios according to the invention consisting of particles l'ess than 40 ⁇ m and added in the same amount into the ground cement clinker, had only minimum or even, no regulation effect for controlling the set time.
  • the mixture for controlling the set time of cement has no side effects, does not affect any cement properties and fully substitute calcium sulphate or, as the case may be, increases the early cement strength .
  • a part of the particle material was selected containing 75% particles larger than 65 ⁇ m.
  • a part of the particle material was selected containing 75% particles larger than 65 ⁇ m.
  • the mixture formed is added in the amount of 3.5% by mass
  • a ,part of the particle material was selected containing 75% particles larger than 65 ⁇ m.
  • a part of the particle material was selected containing 95% particles larger than 45 ⁇ m.
  • a part of the particle material was selected containing 95% particles larger than 45 ⁇ m.
  • a part of the particle material was selected containing 95% particles larger than 45 ⁇ m.
  • the mixture formed is added in the amount of 8% by mass
  • the mixture formed is added in the amount of 4.5% by mass
  • the invention can be used primarily in the cement industry and (construction industry.

Landscapes

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

Abstract

The mixture for controlling the setting time of cemens based on clinker consists of the particle material of latently hydraulically active substances containing 0.3% to 60% by mass CaO, 0.5% to 65% by mass SiO2, 3% to 34% by mass Al2O3, 2% to 19% by mass Fe2O3, 0.5% to 10% by mass MgO, 0.5% to 36% by mass C, the material also contains TiO2, SO3, P2O5, K2O, Na2O in the amount from 0.04% to 11% by mass, the size of the particles is 1 μm to 450 μm, with more than 50% by mass of the particles larger than 40 μm. In the cement based on cement clinker, the amount of the mixture used for controlling the set time is 0.01 to 50% by mass of the final cement mixture, where the cements based on cement clinker may contain constituents such as limestone and/or blast furnace slag and/or fly ash and/or silica fumei and/or natural and/or artificial pozzolanic materials and/or burnt shale.

Description

Mixture for controlling the set time of cements based on cement clinker, method of control and its use
Technical Field
Mixture for controlling the set time of cements based on cement clinker, consisting of a particle material of latently hydraulically active substances.
Background Art
It is known that the control of the setting time and the determination of its beginning is carried out by adding calcium sulphate (CaSO4) in the amount of 5% by mass to other cement components when grinding clinker. Without CaSO4, the present mineral (CaO) 3 . AI2O3 (in brief C3A) starts to hydrate already when wetted with water.
The disadvantage of the application of calcium sulphate for controlling the set time is that it does not make it possible to decrease the water-cement ratio of the fresh concrete mixture, shorten the setting time and achieve faster growth of early strengths.
Other admixtures for controlling the set time are known, where calcium sulphate is replaced with another system containing sulfonated polyphenolate or ligninsulfonate, alkaline carbonate, hydrogencarbonate, hydroxide or silicate or, as the case may be, other admixtures controlling the set time, such as, for example, sodium-potassium tartrate, boric acid (US 3 689 294, US 4 906 912, US 4 551 176 patents) .
The use of such admixtures to control setting is not advantageous from the economical point of view and frequently causes lowering of the early (4 to 24 hours) strength of mixtures. This system also has a relatively short setting time or it is necessary to add it in a rather large amount. Their overall control of the setting time therefore does not fully substitute the use of calcium sulphate, primarily in the amount added and the time of setting.
The goal of this invention is to find a mixture for controlling the set time of cement with which it is possible to substitute/replace gypsum as for the amount added to the cement clinker and the time of setting and at the same time decreases the water-cement ratio of the fresh cement mixture.
Disclosure of the technical solution
● The invention solves the problem by means of a mixture for controlling the set time of cement, which control the set of the cement in time. The mixture consists of a particle material of latently hydraulically active substances containing 0.3% to 60% by mass CaO, 0.5% to 65% by - mass SiO2, 3% to 34% by mass Al2O3, 2% to 19% by mass Fe2O3, 0.5% to 10% by mass MgO, 0.5% to 36% by mass C, the material also contains TiO2, SO3, P2O5, K2O, Na2O in the amount from 0.04% to 11% by mass, the size of the particles is 1 μm to 450 μm , with more than 50% by mass of the mass particles of this mixture larger than 40 μm. According to the invention, in the cement based on cement clinker, the amount of mixture used for controlling the set time is 0.01 to 50% by mass of the final cement mixture. Cements based on cement clinker may contain constituents such as limestone and/or blast furnace slag and/or, fly ash and/or silica fume and/or natural and/or artificial pozzolanic materials and/or burnt shale. The solution according to the invention is based on systematic experiments during which it was discovered that the mixture consisting of latently hydraulic substances prepared in chemically expressed ratios according to the invention and consisting only of particles larger than 40 μm has a surprising effect, i.e. if added to the ground cement clinker, it has the ability to regulate setting of the prepared mixture in time. These regulation properties are so significant that according to the invention, the mixture need not be used in great amount (10% by mass and more) to control the setting time of cement clinker.
The mixture prepared in chemically expressed ratios according to the invention, consisting of particles l'ess than 40 μm and added in the same amount into the ground cement clinker, had only minimum or even, no regulation effect for controlling the set time.
According to the invention, the mixture for controlling the set time of cement has no side effects, does not affect any cement properties and fully substitute calcium sulphate or, as the case may be, increases the early cement strength .
The principle of the invention is described in the following examples (that do not restrict it) .
Examples
Example 1
From the latently hydraulically active particle material with the size of particles 1 μm to 450 μm and with the following composition expressed in terms of % by mass:
Figure imgf000005_0001
a part of the particle material was selected containing 75% particles larger than 65 μm. The mixture formed is added in the amount of 5% by mass (related to the clinker mass) to the finely milled cement clinker with a specific surface of 390 m2/kg and a slurry is prepared from the obtained cement with a water-cement ratio (ratio of water to the solid phase) w = 0.29 that starts to set after 150 minutes.
Figure imgf000005_0002
From the latently hydraulically active particle material; with the size of particles 1 μm to 450 μm and with the following composition, expressed in terms of %by mass :
Figure imgf000005_0003
a part of the particle material was selected containing 75% particles larger than 65 μm.
The mixture formed is added in the amount of 3.5% by mass
(related to the clinker mass) to t.he finely ground cement clinker with a specific surface of 390 m2/kg and a slurry is prepared from the obtained cement with a water-cement , ratio (ratio of water to the solid phase) w = 0.28 that starts to set after 130 minutes.
Example 3
From the latently hydraulically active particle material with the size of particles 1 μm to 450 μm and with the following composition expressed in terms of %by mass:
Figure imgf000006_0002
a ,part of the particle material was selected containing 75% particles larger than 65 μm.
The regulation mixture formed is added in the amount of 8% by mass (related to the clinker mass) to the finely ground cement clinker with a specific surface of 390 πr/kg and a slurry i,s prepared from the obtained cement with a water-cement ratio (ratio of water to the solid phase) w = 0.29 that starts to set after 190 minutes.
Example 4
From the latently hydraulically active particle material with the size of particles 1 μm to 450 μm and with the following composition expressed in terms of %by mass:
Figure imgf000006_0001
a part of the particle material was selected containing 95% particles larger than 45 μm.
The mixture formed is added in the amount of 5% by mass (related to the clinker mass) to the finely ground cement clinker with a specific surface of 360 rrr/kg and a slurry is prepared from the obtained cement with a water-cement ratio (ratio of water to the solid phase) w = 0.29 that starts to set after 140 minutes.
Example 5
From the latently hydraulically active particle material with the size of particles 1 μm to 450 μm and with the following composition expressed in terms of %by mass:
Figure imgf000007_0001
a part of the particle material was selected containing 95% particles larger than 45 μm.
The mixture formed is added in the amount of 3.5% by mass (related to the clinker mass) to the finely ground cement clinker with a specific surface of 360 mVkg and a slurry is prepared from the obtained cement with a water-cement ratio (ratio of water to the solid phase) w = 0.28 that starts to set after 120 minutes.
Example 6
From the latently hydraulically active particle material with the size of particles 1 μm to 450 μm and with the following composition expressed in terms of by mass:
Figure imgf000007_0002
a part of the particle material was selected containing 95% particles larger than 45 μm. The mixture formed is added in the amount of 8% by mass
(related to the clinker mass) to the finely ground cement clinker with a specific surface of 360 rrr/kg and a slurry is prepared from the obtained cement with a water-cement ratio
(ratio of water to the solid phase) w = 0.29 that starts to set after 170 minutes.
Example 7
From the latently hydraulically active particle material with the size of particles 1 μm to 450 μm and with the following composition expressed in terms of %by mass:
Figure imgf000008_0001
a part of the particle material was selected containing 85% particles larger than 45 μm.
The mixture formed is added in the amount of 4.5% by mass
(related to the clinker mass) to the finely ground cement clinker with a specific surface of 360 m2/kg and a slurry is prepared from the obtained cement with a water-cement ratio
(ratio of water to the solid phase) w = 0.29 that starts to set after 150 minutes.
Figure imgf000008_0002
The invention can be used primarily in the cement industry and (construction industry.

Claims

Claims
1. Mixture for controlling the set time of cements based on cement clinker characterized by that it consists of latently hydraulically active particle material with the size of particles 1 μm to 450 μm, where more than 50% of mass particles is larger than 40 μm and the amount of the mixture used for controlling the set time is 0.01 to 50% by mass of the final cement mixture.
2. Mixture for controlling the set time of cements based on cement clinker characterized by that it contains 0.3% to 60% by mass CaO, 0.5% to 65% by mass SiO2, 3% to 34% by mass Al2O3, 2% to 19% by mass Fe2O3, 0.5% to 10% by mass MgO, '0.5% to 36% by mass C, where the' mixture consists of particles with the size between 1 μm to 450 μm, where more than 50% of the mass particles is larger than 40 μm and the amount of the mixture used for controlling the set time is 0.01 to 50% by mass of the final cement mixture.
3. Mixture for controlling the set time of cements based on cement clinker according to claims 1 and 2, characterized by that it also contains components TiO2, SO3, P2O5, K2O and Na2O in the amount from 0.04% to 11% by mass.
4. Mixture for controlling the set time of cements based on cement clinker according to claims 1 through 3 characterized by that the amount of the mixture used for controlling the set time is 0.01 to 50% by mass of the final cement mixture, with the remaining part of the mixture formed by cements based on cement clinker that may particularly contain constituents such as limestone and/or blast furnace slag and/or fly ash and/or silica fume and/or natural and/or artificial pozzolanic materials and/or burnt shale.
5. Mixture for controlling the set time of cements based on cement clinker according to claims 1 through 4 characterized by that it contains maximally up to 10% mixture (with respect to the overall mass of the cement mixture) for controlling the set time of cement.
6. The method of control the time of setting of cement mixtures, characterized by that the latently hydraulically active material with the size of particles between 1 μm to 450 μm and more than 50% mass particles in this mixture larger than 40 μm is added to the final cement mixture in the amount of 0.01 to 50% by mass, where after the water is added the time of setting of the cement mixture is controlled.
7. Use of a mixture of latently hydraulically active particle material for controlling the set time of cements based on cement clinker.
PCT/CZ2007/000114 2007-12-18 2007-12-18 Mixture for controlling the set time of cements based on cement clinker, method of control and its use WO2009076913A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CZ200819593U CZ18784U1 (en) 2007-12-18 2007-12-18 Mixture - cement setting agent based on cement clinker
PCT/CZ2007/000114 WO2009076913A1 (en) 2007-12-18 2007-12-18 Mixture for controlling the set time of cements based on cement clinker, method of control and its use

Applications Claiming Priority (1)

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PCT/CZ2007/000114 WO2009076913A1 (en) 2007-12-18 2007-12-18 Mixture for controlling the set time of cements based on cement clinker, method of control and its use

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010040325A1 (en) * 2008-10-06 2010-04-15 Elmos Trading Spol. S R.O. A method of cement setting control
CN110776268A (en) * 2019-12-05 2020-02-11 亚泰集团伊通水泥有限公司 Cement clinker and preparation method and application thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2250107A (en) * 1939-09-02 1941-07-22 Detroit Edison Co Concrete
WO2002070247A1 (en) * 2001-03-02 2002-09-12 James Hardie Research Pty Limited A composite product
CZ20022505A3 (en) * 2002-07-18 2004-03-17 Karel Ling Binding agent based on cement clinker and with controllable start of setting
CZ20022504A3 (en) * 2002-07-18 2004-04-14 Karel Ling Setting regulator for all kinds of clinker-based cements
GB2396861A (en) * 2002-11-08 2004-07-07 Bj Services Co High strength cement for use in oil wells

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2250107A (en) * 1939-09-02 1941-07-22 Detroit Edison Co Concrete
WO2002070247A1 (en) * 2001-03-02 2002-09-12 James Hardie Research Pty Limited A composite product
CZ20022505A3 (en) * 2002-07-18 2004-03-17 Karel Ling Binding agent based on cement clinker and with controllable start of setting
CZ20022504A3 (en) * 2002-07-18 2004-04-14 Karel Ling Setting regulator for all kinds of clinker-based cements
GB2396861A (en) * 2002-11-08 2004-07-07 Bj Services Co High strength cement for use in oil wells

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
ERDOGDU, K. & TÜRKER, P.: "Effects of fly ash particle size on strength of Portland cement fly ash mortars", CEMENT & CONCRETE RESEARCH, vol. 28, no. 9, 1998, pages 1217 - 1222, XP002492329 *
JACKSON, PETER IN LEAS CHEMISTRY OF CEMENT & CONCRETE: "Raw materials", 1998, BUTTERWORTH HEINEMANN, 4TH EDITION OXFORD, XP002492331 *
RESCHKE, T., SIEBEL, E. & THIELEN, G.: "Influence of the granulometry and reactivity of cement and additions on the development of the strength and microstructure of mortar and concrete", VDZ: BETONTECHNISCHE BERICHTE, 2000, Düsseldorf, XP002492330, Retrieved from the Internet <URL:http://www.vdz-online.de/fileadmin/gruppen/vdz/3LiteraturRecherche/Betontechnische_Berichte/025-038_Einfl.s_Granulometr.pdf> [retrieved on 20080814] *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010040325A1 (en) * 2008-10-06 2010-04-15 Elmos Trading Spol. S R.O. A method of cement setting control
CN110776268A (en) * 2019-12-05 2020-02-11 亚泰集团伊通水泥有限公司 Cement clinker and preparation method and application thereof

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