Sika Technology Ag

Gilbert Mäder

Ueli Sulser

Christian Bürge

Franz Wombacher

Beat Marazzani

Christophe Kurz

An admixture for mineral binder compositions, in particular an after-treatment agent for mineral binder compositions, including at least one water-absorbing substance and at least one shrinkage reducer.

Additive for internal post treatment of mineral binder compositions

A hardening accelerator for mineral binder compositions, in particular for cementitious binder compositions, including at least one phosphoric acid ester of a polyvalent alcohol and at least one alkali metal carbonate.

Accelerator

A composition, in particular a setting accelerator for mineral binders, containing or being made of: a) calcium oxide in the particle form; b) an inhibitor for the reaction of calcium oxide with water and c) optionally water.

Composition based on calcium oxide

A method for preparing a setting and hardening accelerator for mineral binders including a step of: (i) reacting a calcium compound CV with a silica sol SL, a molar ratio of Si:Ca being less than 0.1 during the reaction.

Accelerator for mineral binders

A hardening accelerator for mineral binder compositions, in particular for cementitious binder compositions, is provided. The hardening accelerator contains a combination of a) a first amino alcohol (A) including at least one primary alcohol group, and b) a second amino alcohol (E) including at least one secondary alcohol group.

Hardening accelerator for mineral binder compositions

A hardening accelerator for mineral binders including an amino alcohol A and/or of a salt of said amino alcohol A, for example, cementitious binders, is provided. The amino alcohol A has a structure according to formula (I) where a) Rand R, independently of one another, each represent an alkanol group including 3-4 carbon atoms, b) Ris an organic group including 1-8 carbon atoms, and c) Ris different from Rand/or R.

Hardening accelerator for mineral binders

A process for preparing a setting and hardening accelerator for mineral binders includes the following steps: a) reacting a calcium compound CV with a silicon compound SV, and b) adding an acidic compound having a molecular weight of not more than 200 g/mol, more particularly 40-100 g/mol.

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Marthalen, Switzerland

Gilbert Mäder