WO2007022852A3 - Accelerator for portland cement - Google Patents

Accelerator for portland cement Download PDF

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Publication number
WO2007022852A3
WO2007022852A3 PCT/EP2006/007569 EP2006007569W WO2007022852A3 WO 2007022852 A3 WO2007022852 A3 WO 2007022852A3 EP 2006007569 W EP2006007569 W EP 2006007569W WO 2007022852 A3 WO2007022852 A3 WO 2007022852A3
Authority
WO
WIPO (PCT)
Prior art keywords
portland cement
acid
accelerator
urea
alumina
Prior art date
Application number
PCT/EP2006/007569
Other languages
French (fr)
Other versions
WO2007022852A2 (en
Inventor
Cristiano Maltese
Carlo Pistolesi
Marco Squinzi
Original Assignee
Mapei Spa
Cristiano Maltese
Carlo Pistolesi
Marco Squinzi
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 Mapei Spa, Cristiano Maltese, Carlo Pistolesi, Marco Squinzi filed Critical Mapei Spa
Publication of WO2007022852A2 publication Critical patent/WO2007022852A2/en
Publication of WO2007022852A3 publication Critical patent/WO2007022852A3/en

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
    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/0028—Aspects relating to the mixing step of the mortar preparation
    • C04B40/0039—Premixtures of ingredients
    • 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
    • C04B2103/0004—Compounds chosen for the nature of their cations
    • C04B2103/0021—Compounds of elements having a valency of 3
    • 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
    • C04B2103/10—Accelerators; 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/10—Compositions or ingredients thereof characterised by the absence or the very low content of a specific material
    • C04B2111/1025—Alkali-free or very low alkali-content materials

Abstract

This invention discloses an accelerating admixture for Portland cement favouring high compressive strength development, in particular at early curing ages, and comprising: a) aluminium hydroxide or alumina and/or sodium aluminate; b) aluminium sulphate; c) hydrofluoric acid; and/or d) inorganic or organic phosphorus based acid or salts; and/or e) boric acid or a boron derivative; and/or f) ascorbic acid; and/or g) urea.
PCT/EP2006/007569 2005-08-23 2006-07-31 Accelerator for portland cement WO2007022852A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI20051589 ITMI20051589A1 (en) 2005-08-23 2005-08-23 ACCELERATING FOR CEMENT PORTLAND LOW COST
ITMI2005A001589 2005-08-23

Publications (2)

Publication Number Publication Date
WO2007022852A2 WO2007022852A2 (en) 2007-03-01
WO2007022852A3 true WO2007022852A3 (en) 2007-05-03

Family

ID=37177805

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/007569 WO2007022852A2 (en) 2005-08-23 2006-07-31 Accelerator for portland cement

Country Status (2)

Country Link
IT (1) ITMI20051589A1 (en)
WO (1) WO2007022852A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7152605B2 (en) 2018-10-01 2022-10-12 ロッテ精密化學株式会社 Additive for cement mortar containing hydrophobic silica and method for producing the same

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MX2010007596A (en) 2008-01-11 2010-08-03 Constr Res & Tech Gmbh Aqueous accelerator mixture.
EP2248780A1 (en) 2009-05-06 2010-11-10 BK Giulini GmbH Set- and hardening accelerator
ES2364937B1 (en) 2011-03-17 2012-08-22 Industrias Químicas Del Ebro, S.A. METHOD OF PREPARATION OF AN ACCELERATING PRODUCT OF FRAGUADO, PRODUCT OBTAINED AND USE.
CN107840593B (en) * 2017-11-17 2020-01-14 武汉理工大学 Early-strength liquid alkali-free accelerator for sprayed concrete and preparation method thereof
CN110066134A (en) * 2019-05-14 2019-07-30 山西恒泰伟业建材有限公司 A kind of alkali-free liquid setting accelerator mother liquor

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1167317A1 (en) * 2000-06-21 2002-01-02 Sika AG, vorm. Kaspar Winkler & Co. Alkali-free set and hardening accelerator
WO2003029163A2 (en) * 2001-09-28 2003-04-10 Construction Research & Technology Gmbh Accelerator composition
WO2004076382A1 (en) * 2003-02-25 2004-09-10 Construction Research & Technology Gmbh Accelerator admixture
WO2004106258A2 (en) * 2003-05-30 2004-12-09 Construction Research & Technology Gmbh Admixture for sprayaable cement compositions
WO2005028398A1 (en) * 2003-09-19 2005-03-31 Construction Research & Technology Gmbh Liquid accelerator
WO2006074739A1 (en) * 2005-01-14 2006-07-20 Construction Research & Technology Gmbh Liquid accelerator

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1167317A1 (en) * 2000-06-21 2002-01-02 Sika AG, vorm. Kaspar Winkler & Co. Alkali-free set and hardening accelerator
WO2003029163A2 (en) * 2001-09-28 2003-04-10 Construction Research & Technology Gmbh Accelerator composition
WO2004076382A1 (en) * 2003-02-25 2004-09-10 Construction Research & Technology Gmbh Accelerator admixture
WO2004106258A2 (en) * 2003-05-30 2004-12-09 Construction Research & Technology Gmbh Admixture for sprayaable cement compositions
WO2005028398A1 (en) * 2003-09-19 2005-03-31 Construction Research & Technology Gmbh Liquid accelerator
WO2006074739A1 (en) * 2005-01-14 2006-07-20 Construction Research & Technology Gmbh Liquid accelerator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7152605B2 (en) 2018-10-01 2022-10-12 ロッテ精密化學株式会社 Additive for cement mortar containing hydrophobic silica and method for producing the same

Also Published As

Publication number Publication date
ITMI20051589A1 (en) 2007-02-24
WO2007022852A2 (en) 2007-03-01

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