Sika Technology Ag

Sika Ag, Vorm. Kaspar Winkler & Co.

Sika Schweiz Ag

Beat Marazzani

Christian Bürge

Christophe Kurz

Franz Wombacher

Gilbert Mäder

Thomas Müller

Theodor A B&uuml;rge

Urs Mäder

Urs M&auml;der

Ueli Sulser

Dieter Honert

Christian Buerge

Urs Maeder

Giuseppe Colaiacovo

Gilbert Maeder

Theodor A Buerge

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 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

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

The invention relates to additives for hydraulic binders and systems produced from them, such as concrete and mortar. In particular, the present invention relates to a setting and hardening accelerator for hydraulic binders produced by means of reaction of a calcium compound CV with a silicon compound SV and addition of a phosphonic acid derivative, as well as its production.

Accelerator for hydraulic binders

The invention relates to a use of a composition containing polyorganosiloxane S and a method of reducing corrosion on steel reinforcement in reinforced concrete constructions, and also a concrete structure which is produced using such compositions. It is highly suitable for the renovation of old concrete but also for inhibition of corrosion of reinforcing iron in fresh concrete.

Use and method for reduction of corrosion

Disclosed is a hydraulically setting composition containing phosphorus-oxygen acid esters or ester salts which comprise alkoxy groups. Also disclosed is a surface-modifying agent for structural steel, which contains or consists of phosphorus-oxygen acid esters or ester salts comprising alkoxy groups. The hydraulically setting composition and the surface-modifying agent are suitable for protecting reinforced concrete.

Use of phosphorus-oxygen acid esters containing alkoxy groups as corrosion inhibitors for reinforced concrete

Method for rehabilitative and/or protective corrosion-inhibition of reinforcing steel embedded in a hardened concrete structure by means of surface-applied corrosion-inhibiting compositions

Method for rehabilitative and/or protective corrosion-inhibition of reinforcing steel embedded in a hardened structure by means of surface-applied corrosion-inhibiting compositions

The invention relates to a setting- and hardening-accelerator for hydraulic binders containing at least a nitrate- or sulfite component, at least a thio-cyanate component, at least an alkanolamine component and at least a carboxylic acid component, as well as a method of setting- and hardening-acceleration of hydraulic binders or mixtures containing hydraulic binders.

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Oberengstringen, Switzerland

Beat Marazzani