IT1274718B - Cementi esenti da cromati e un procedimento per la loro preparazione - Google Patents

Cementi esenti da cromati e un procedimento per la loro preparazione

Info

Publication number
IT1274718B
IT1274718B ITMI941756A ITMI941756A IT1274718B IT 1274718 B IT1274718 B IT 1274718B IT MI941756 A ITMI941756 A IT MI941756A IT MI941756 A ITMI941756 A IT MI941756A IT 1274718 B IT1274718 B IT 1274718B
Authority
IT
Italy
Prior art keywords
preparation
procedure
cements
chrome free
free cements
Prior art date
Application number
ITMI941756A
Other languages
English (en)
Inventor
Luigi Cassar
Graziano Castaldi
Fabio Corazza
Original Assignee
Italcementi Spa
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 Italcementi Spa filed Critical Italcementi Spa
Priority to ITMI941756A priority Critical patent/IT1274718B/it
Publication of ITMI941756A0 publication Critical patent/ITMI941756A0/it
Priority to EP95202166A priority patent/EP0697380B1/en
Priority to DE69524310T priority patent/DE69524310D1/de
Publication of ITMI941756A1 publication Critical patent/ITMI941756A1/it
Application granted granted Critical
Publication of IT1274718B publication Critical patent/IT1274718B/it

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
    • C04B7/36—Manufacture of hydraulic cements in general
    • C04B7/48—Clinker treatment
    • 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
    • C04B2103/0096—Reducing agents
    • 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
    • C04B2111/1075—Chromium-free or very low chromium-content materials
    • C04B2111/1081—Chromium VI, e.g. for avoiding chromium eczema

Landscapes

  • 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)
  • Saccharide Compounds (AREA)

Abstract

La presente invenzione riguarda cementi sostanzialmente esenti da cromati e un procedimento per la loro preparazione. L'eliminazione dei cromati solubili viene condotta durante la preparazione dei cementi per azione di derivati riducenti aldeidici.
ITMI941756A 1994-08-19 1994-08-19 Cementi esenti da cromati e un procedimento per la loro preparazione IT1274718B (it)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ITMI941756A IT1274718B (it) 1994-08-19 1994-08-19 Cementi esenti da cromati e un procedimento per la loro preparazione
EP95202166A EP0697380B1 (en) 1994-08-19 1995-08-09 Chromate free cements and a process for preparing them
DE69524310T DE69524310D1 (de) 1994-08-19 1995-08-09 Chromatfreie Zemente und Verfahren zu deren Herstellung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI941756A IT1274718B (it) 1994-08-19 1994-08-19 Cementi esenti da cromati e un procedimento per la loro preparazione

Publications (3)

Publication Number Publication Date
ITMI941756A0 ITMI941756A0 (it) 1994-08-19
ITMI941756A1 ITMI941756A1 (it) 1996-02-19
IT1274718B true IT1274718B (it) 1997-07-24

Family

ID=11369483

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI941756A IT1274718B (it) 1994-08-19 1994-08-19 Cementi esenti da cromati e un procedimento per la loro preparazione

Country Status (3)

Country Link
EP (1) EP0697380B1 (it)
DE (1) DE69524310D1 (it)
IT (1) IT1274718B (it)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19750894C2 (de) * 1997-11-17 2001-02-15 Fraunhofer Ges Forschung Verfahren zur Verringerung des löslichen Chromatgehaltes von Holzaschen
EP0960865A1 (de) * 1998-05-25 1999-12-01 Chemische Werke Zell-Wildshausen GMBH Mittel zur Reduzierung von Chrom (VI)-Ionen in einer hydraulisch abbindenden Masse
DE59810424D1 (de) * 1998-07-29 2004-01-22 Holderbank Financ Glarus Verfahren zum herstellen von chromatfreien anorganischen bindemitteln
ITMI20120764A1 (it) 2012-05-07 2013-11-08 Mapei Spa Additivo per cemento portland costituito da un riducente incapsulato in una matrice polimerica
CN113060948A (zh) * 2021-04-01 2021-07-02 重庆康尼睿能商贸有限公司 一种水泥生料及水泥的制备方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH534643A (fr) * 1971-02-16 1973-03-15 Service Neuchatelois De Medeci Procédé de fabrication d'un ciment
US4161409A (en) * 1978-03-06 1979-07-17 Louis Schiffman Corrosion inhibitive pigment
IS1443B6 (is) * 1980-12-17 1990-12-14 Aalborg Portland A/S thurr sementsblanda
DD246983A1 (de) * 1986-02-03 1987-06-24 Zementind Rationalisierung Verfahren zur herstellung von chromatarmen zementen
DD262852A1 (de) * 1987-08-03 1988-12-14 Zementind Rationalisierung Verfahren zur verringerung des chromatgehaltes im zementklinker
DE3800985A1 (de) * 1988-01-15 1989-07-27 Wolman Gmbh Dr Verfahren zur entgiftung eines durch chromat belasteten bodens

Also Published As

Publication number Publication date
ITMI941756A0 (it) 1994-08-19
ITMI941756A1 (it) 1996-02-19
EP0697380A2 (en) 1996-02-21
EP0697380B1 (en) 2001-12-05
EP0697380A3 (en) 1997-05-02
DE69524310D1 (de) 2002-01-17

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970828