(10) WO 2012/045401 A1
(22) 23. September 2011
(43) 12. April 2012
(71) INGENIEURBÜRO SCHIESSL GEHLEN SODEII~AT GMBH [DE/DE]; Landsherger Str. 370, 80687 München (DE)
(57) Dark discolored 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...