The present invention relates to a polymer latex obtained by aqueous emulsion polymerization of a mixture of ethylenically unsaturated monomers comprising a) vinyl aromatic compounds; b) conjugated dienes; c) hydroxyalkyl esters of ethylenically unsaturated acids in an amount of 2 to 10 wt.-% based on the total weight of monomers; and d) ethylenically unsaturated carboxylic acids or salts thereof in an amount of 0 to 0.15 wt.-% based on the total weight of monomers;
wherein the weight ratio of vinyl aromatic compounds to conjugated dienes is at least 1.3:1 and the polymer latex comprises 2 to 10 wt.-% based on total weight of monomers of non-ionic surfactants having an HLB of 17 to 19 and to constructions materials, preferably cementitious compositions comprising same.

The present invention relates to a polymer latex obtained by aqueous emulsion polymerization of a mixture of ethylenically unsaturated monomers comprising a) vinyl aromatic compounds; b) conjugated dienes; c) hydroxyalkyl esters of ethylenically unsaturated acids in an amount of 2 to 10 wt.-% based on the total weight of monomers; and d) ethylenically unsaturated carboxylic acids or salts thereof in an amount of 0 to 0.15 wt.-% based on the total weight of monomers;
wherein the weight ratio of vinyl aromatic compounds to conjugated dienes is at least 1.3:1 and the polymer latex comprises 2 to 10 wt.-% based on total weight of monomers of non-ionic surfactants having an HLB of 17 to 19 and to constructions materials, preferably cementitious compositions comprising same.

The invention relates to a method (100) for selecting the composition of a construction material including an excavated clay soil, said construction material composition to include deflocculating agent and activating agent quantities adapted to the excavated clay soil, said method including a step of receiving (130) a measured value of at least one physicochemical property of an excavated clay soil, and a step of selecting (170) a deflocculating agent quantity and an activating agent quantity adapted to the excavated clay soil. In addition, the invention also relates to a method (200) for calibrating a calculation algorithm for determining the composition of a site construction material, to a construction material formed from an excavated clay soil, and to a system (400) for preparing a construction material including an excavated clay soil.

The invention relates to a method (100) for selecting the composition of a construction material including an excavated clay soil, said construction material composition to include deflocculating agent and activating agent quantities adapted to the excavated clay soil, said method including a step of receiving (130) a measured value of at least one physicochemical property of an excavated clay soil, and a step of selecting (170) a deflocculating agent quantity and an activating agent quantity adapted to the excavated clay soil. In addition, the invention also relates to a method (200) for calibrating a calculation algorithm for determining the composition of a site construction material, to a construction material formed from an excavated clay soil, and to a system (400) for preparing a construction material including an excavated clay soil.

The invention provides a pourable composition comprising calcium sulfate hemihydrate; optionally, cement; one or more anionic surfactants selected from alkyl anionic surfactants, alkyl ether anionic surfactants, alkyl aryl anionic surfactants, and combinations thereof; one or more set accelerator additives; and water.

The invention provides a pourable composition comprising calcium sulfate hemihydrate; optionally, cement; one or more anionic surfactants selected from alkyl anionic surfactants, alkyl ether anionic surfactants, alkyl aryl anionic surfactants, and combinations thereof; one or more set accelerator additives; and water.

A gypsum slurry includes water, a hydraulic component including calcium sulfate hemihydrate and a linear polycarboxylate dispersant. The linear polycarboxylate anionic dispersant includes a first monomeric repeating unit and a second monomeric repeating unit. The first repeating unit of the linear polycarboxylate dispersant is an olefinic unsaturated carboxylic acid repeating unit or salt thereof. The second repeating unit of the linear polycarboxylate dispersant is a vinyl sulfonate. The slurry can be made into a gypsum panel. Methods of making gypsum slurry and a gypsum panel are also disclosed.

The object of the present invention is a method for producing oil-in-water (O/W) emulsions from self-emulsifying O/W gel concentrates without agitation, such as stirring, or in a laminar flow field.

The object of the present invention is a method for producing oil-in-water (O/W) emulsions from self-emulsifying O/W gel concentrates without agitation, such as stirring, or in a laminar flow field.

The invention relates to a method (100) for selecting the composition of a construction material including an excavated clay soil, said construction material composition to include deflocculating agent and activating agent quantities adapted to the excavated clay soil, said method including a step of receiving (130) a measured value of at least one physicochemical property of an excavated clay soil, and a step of selecting (170) a deflocculating agent quantity and an activating agent quantity adapted to the excavated clay soil. In addition, the invention also relates to a method (200) for calibrating a calculation algorithm for determining the composition of a site construction material, to a construction material formed from an excavated clay soil, and to a system (400) for preparing a construction material including an excavated clay soil.