Sika Technology Ag

Letizia Caderas

Patrick Juilland

Arnd Eberhardt

Emmanuel Gallucci

Luis Pegado

Denise Schönenberger

Lukas Frunz

A combination of retarders and regulators for hydration reaction of cementitious binders including clinkers based on Ye'elimite. Set retarders are calcium complexing agents, consisting of sugar acids, sugars, sugar alcohols, hydroxycarboxylic acids, phosphates, phosphonates, borates and amines. Regulator general formula (I) is where M is H, NHor chosen from monovalent or divalent metal of groups Ia, IIa, IIIa, Ib, IIb, IVb, VIb, VIIb or VIIIb of periodic table of elements, where M is a divalent metal, a second equivalent of R—SOis present, and M is chosen from group consisting of H, NH, Li, Na, K, MgX, CaX, or NiX with X═RSO, and R is chosen from H, NH, OH or from hydrocarbon chain with 1-18 C atoms which may be substituted by N and/or O and/or which may be linear or branched and/or which contain one or more unsaturated bonds and/or cycloaliphatic and/or aromatic moieties.

Additives for cements comprising Ye'elimite

A method for the kinetic regulation of cementitious binders and/or cementitious binder compositions, the method including the steps of providing a cementitious binder, admixing at least one borate mineral to said cementitious binder, and optionally admixing an activator selected from the group consisting of CaO, Ca(OH), and/or CaSO.

Method for the kinetic regulation of cementitious binders

Growing community of inventors

Basel, Switzerland

Letizia Caderas