Sika Technology Ag

Sika Schweiz Ag

Christian Bürge

Ueli Sulser

Christophe Kurz

Franz Wombacher

Beat Marazzani

Gilbert Mäder

Ulf Velten

Urs Mäder

Thomas Müller

Irene Schober

Jürg Widmer

Theodor A Bürge

André Peter

Lukas Frunz

Patrick Juilland

Arnd Eberhardt

Alexander Bleibler

Emmanuel Gallucci

Patrik Kuhn

Dieter Honert

Alexander Stücheli

Giuseppe Colaiacovo

Marc Schmutz

Ralf Beissel

Beat Schnider

Oliver Blask

Annette Weinkauf

Christoph Kurz

Small sand aggregate splitter

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

The use of an amine compound and/or of a salt of the amine compound to inert clay minerals with respect to dispersants in a mineral binder composition containing clay minerals and/or to improve or increase the effect of a dispersant in a mineral binder composition containing clay minerals, wherein the amine compound has a structure according to formula I:HN&#x2014;(CHR)&#x2014;[NR&#x2014;(CHR)]&#x2014;[NR&#x2014;(CHR)]&#x2014;NH&#x2003;&#x2003;(I)and wherein: each s and t, independently of each other, has a value of 0-2; each e, f, and g, independently of each other, has a value of 2-10; each R, R, R, R, and R, independently of each other, represents hydrogen or &#x2014;CH.

Inerting clay minerals and improving the effect of liquefiers in clay-containing 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

An adjuvant combination composed of a milling assistant and a concrete admixture for a composition including cement, for accelerating cement hydration, wherein the milling assistant includes at least one amino alcohol and at least one cement hydration accelerator selected from chlorides, thiocyanates, nitrates, nitrites and hydroxides, and the concrete admixture includes a reaction product of at least one calcium compound with at least one silicon compound selected from a silicon dioxide compound, a silica compound and a silicate compound. Using the adjuvant combination produces a significant acceleration in the hardening of a composition including cement, after the addition of water. This is an advantage especially in the production of prefabricated concrete components, allowing quicker deshuttering.

Adjuvant combination of a milling assistant and a concrete admixture for accelerated hydration of cementitious binders

An air void-forming agent, more particularly for cementitious systems, contains at least one air void-forming material with foaming effect, at least one air void-forming material with defoaming effect, and water.

Air void-forming material for cementitious systems

The present invention relates to an accelerator for hydraulic binding agents, comprising at least one phosphoric acid ester of a multivalent alcohol and at least one calcium compound. The accelerator according to the invention is capable of producing a very fast-curing mortar or concrete composition which has a high early strength and, nevertheless, very favorable processing properties and thus allows early dismantling or early loading and does not cause any losses in the final strength.

Accelerator for hydraulic binding agents with long processing time and very early strength

The invention relates to the use of caramelized sugar as a liquefier for mineral binding agent compositions.

Caramelized sugar as liquefier for mineral binding agent compositions

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.

Process for producing hardening accelerators for mineral binder compositions

The present disclosure relates to the use of an amino alcohol A and/or of a salt of the amino alcohol A as an additive when grinding at least one solid. The amino alcohol A has a structure according to formula I where: Rand R, independently of one another, each present an alkanol group including 2-4 carbon atoms, and b) Ris a hydrocarbon group including 1-8 carbon atoms, and c) Ris different from Rand/or R.

Dialkanolamines as additives for grinding solids

Aqueous polymer dispersions, which, in addition to water and a dispersed copolymer composed of at least two monomers selected from the group consisting of ethylene, propylene, butylene, isoprene, butadiene, styrene, acrylonitrile, acrylic acid, methacrylic acid, acrylic acid alkyl ester, methacrylic acid alkyl ester, vinyl ester, and vinyl chloride, also comprises a comb polymer having side chains that are bound to the main chain by ester or ether groups. The aqueous polymer dispersions are particularly suited for use together with hydraulic and latently hydraulic binding agents. The aqueous polymer dispersions are extremely efficient and result in a strong increase in the mechanical values and a relevant decrease in the porosity and the water absorption property.

Growing community of inventors

Schafisheim, Switzerland

Christian Bürge