Abstract: 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.

Abstract: 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.

Abstract: 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.

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

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

Abstract: A method for producing a mineral binder composition, in particular a concrete or mortar composition. At least one mineral binder is prepared using water, and an air entraining agent is added prior to and/or during the preparation of the mineral binder composition. The air entraining agent includes a particulate reducing agent with an average particle size of at least 25 ?m.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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) R1 and R2, independently of one another, each represent an alkanol group including 3-4 carbon atoms, b) R3 is an organic group including 1-8 carbon atoms, and c) R3 is different from R1 and/or R2.

Abstract: 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.

Abstract: 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: R1 and R2, independently of one another, each present an alkanol group including 2-4 carbon atoms, and b) R3 is a hydrocarbon group including 1-8 carbon atoms, and c) R3 is different from R1 and/or R2.

Abstract: 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.

Abstract: The invention relates to additives for hydraulic binders and systems such as concrete and mortar produced therefrom. More particularly, the present invention relates to a setting and curing accelerator for hydraulic binders produced by reacting a calcium compound CV with a silica sol SL.

Abstract: 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.

Abstract: 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: R1 and R2, independently of one another, each present an alkanol group including 2-4 carbon atoms, and b) R3 is a hydrocarbon group including 1-8 carbon atoms, and c) R3 is different from R1 and/or R2.

Abstract: 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.

Abstract: 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) R1 and R2, independently of one another, each represent an alkanol group including 3-4 carbon atoms, b) R3 is an organic group including 1-8 carbon atoms, and c) R3 is different from R1 and/or R2.

Abstract: 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.

Abstract: 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.