Title (en)

METHOD FOR ATTENUATING DARK DISCOLORATIONS ON FACING CONCRETE SURFACES, READY-MIX WHICH CURES TO CONCRETE, AND CEMENT FOR PRODUCING CONCRETE

Title (de)

VERFAHREN ZUM VERMINDERN VON DUNKELVERFÄRBUNGEN AN SICHTBETONOBERFLÄCHEN, ZU BETON AUSHÄRTENDE FERTIGMISCHUNG SOWIE ZEMENT ZUR HERSTELLUNG VON BETON

Title (fr)

PROCÉDÉ POUR RÉDUIRE DES COLORATIONS SOMBRES SUR DES SURFACES DE BÉTON APPARENT, MÉLANGE PRÊT À L'EMPLOI DURCISSABLE EN BÉTON ET CIMENT POUR FABRIQUER DU BÉTON

Publication

EP 2625013 A1 20130814 (DE)

Application

EP 11764107 A 20110923

Priority

• DE 102010047923 A 20101008
• EP 2011004778 W 20110923

Abstract (en)

[origin: WO2012045401A1] Dark discoloured specks on facing concrete surfaces can be avoided by the addition to the facing concrete prior to its curing, at least in its region that forms the facing concrete surface after curing, of a discoloration attenuator comprising cations of alkali metals and inorganic and/or organic anions, and/or by the use, for producing at least that region of the facing concrete that forms the facing concrete surface after curing, of a cement having an Na2O equivalent of at least 0.7% by mass, this being achieved through addition of soluble alkalis.

IPC 8 full level

B28B 7/38 (2006.01); C04B 7/42 (2006.01); C04B 7/52 (2006.01); C04B 22/14 (2006.01); C04B 28/02 (2006.01); C04B 41/45 (2006.01)

CPC (source: EP)

B28B 7/384 (2013.01); C04B 7/421 (2013.01); C04B 7/52 (2013.01); C04B 22/147 (2013.01); C04B 28/02 (2013.01); C04B 41/458 (2013.01); C04B 2111/2076 (2013.01)

Citation (search report)

See references of WO 2012045401A1

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

DE 102010047923 A1 20120412; DE 102010047923 B4 20140911; EP 2625013 A1 20130814; WO 2012045401 A1 20120412

DOCDB simple family (application)

DE 102010047923 A 20101008; EP 11764107 A 20110923; EP 2011004778 W 20110923