The present invention relates to an admixture composition for the production of lightweight concretes containing polystyrene beads, which comprises a mixture of organic and inorganic substances which consists of the reaction products of polyurethane resin, tetraethyl orthosilicate, a glycol compound, an aromatic vinyl compound containing an unsaturated double bond, preferably styrene, and an inorganic silicate compound and preferably comprises the following components: glycol copolymer type compounds, in an amount of 15-10 w/w %, glycol polymer-silica type compounds, in an amount of 45-50 w/w %, polyurethane-based resin, in an amount of 13-22 w/w % polystyrene in an amount of 2-3% w/w %, and foam glass beads in an amount of 25-15 w/w %, and a) for the production of a liquid product, based on the total mass of the above composition, organic solvents in an amount of 15-20 w/w %, and water in an amount of 10-5 w/w %; or b) for the production of a solid preparation, based on the total mass of the above composition, polyvinyl acetate or polyvinyl alcohol in an amount of 10-5 w/w %; aluminium hydroxide in an amount of 2-5 w/w %, and calcined limestone powder in an amount of 8-10 w/w %. The invention also relates to the production and use of the above admixture composition.

A non-polar reaction resin mixture can be used to improve the adhesion of a mortar composition based on radically polymerizable compounds, in particular based on urethane (meth)acrylates, on the surface of semi-cleaned and/or damp boreholes in mineral substrates. The use of a non-polar reaction resin mixture in the corresponding mortar composition reduced the sensitivity thereof to dampness and inadequate cleaning conditions, so that mortar compositions are obtained overall which are characterized by improved robustness against external influences.

A non-polar reaction resin mixture can be used to improve the adhesion of a mortar composition based on radically polymerizable compounds, in particular based on urethane (meth)acrylates, on the surface of semi-cleaned and/or damp boreholes in mineral substrates. The use of a non-polar reaction resin mixture in the corresponding mortar composition reduced the sensitivity thereof to dampness and inadequate cleaning conditions, so that mortar compositions are obtained overall which are characterized by improved robustness against external influences.

A fire-proof material, in particular a fire-proof thermal insulation material containing water glass, which is composed of a compound which contains 34 to 49.9 wt % of inorganic non-flammable fibres, 50 to 65 wt % of an aqueous silicate solution, and 0.1 to 1 wt % of water glass stabiliser, while it further contains a water glass hardener and the aqueous silicate solution has a density in the range of 1370 to 1400 kg/m.sup.3 and a molar ratio of SiO.sub.2 to Na.sub.2O in the range of 3.2 to 3.4.

A fire-proof material, in particular a fire-proof thermal insulation material containing water glass, which is composed of a compound which contains 34 to 49.9 wt % of inorganic non-flammable fibres, 50 to 65 wt % of an aqueous silicate solution, and 0.1 to 1 wt % of water glass stabiliser, while it further contains a water glass hardener and the aqueous silicate solution has a density in the range of 1370 to 1400 kg/m.sup.3 and a molar ratio of SiO.sub.2 to Na.sub.2O in the range of 3.2 to 3.4.

Disclosed is an aqueous bonding composition comprising: (A) a modified saccharide which is a product of (a) a saccharide and (b) a radical initiator. The composition further preferably comprises a structure based on (c) an amine. The composition further preferably comprises (B) an inorganic acid salt. The formaldehyde-free aqueous bonding composition can contribute to an improvement in mechanical properties such as strength and elastic modulus of a molded article, compared to a formaldehyde-containing phenol resin composition.

Disclosed is an aqueous bonding composition comprising: (A) a modified saccharide which is a product of (a) a saccharide and (b) a radical initiator. The composition further preferably comprises a structure based on (c) an amine. The composition further preferably comprises (B) an inorganic acid salt. The formaldehyde-free aqueous bonding composition can contribute to an improvement in mechanical properties such as strength and elastic modulus of a molded article, compared to a formaldehyde-containing phenol resin composition.

The present invention relates to the use of a soluble magnesium compound for adjusting, in particular reducing, the viscosity of an aluminum sulfate suspension.

The present invention relates to the use of a soluble magnesium compound for adjusting, in particular reducing, the viscosity of an aluminum sulfate suspension.

The invention relates to a product and method for repair of roadway or pavement damage such as potholes, concrete/asphalt joints, and other damage to paved surfaces. The product can be adjusted in terms of the cure time of the product, allowing the user to customize the product for best use in the particular repair being made. Fast cures can be obtained of 5 minutes or less, suitable for quick repair of a small defect in pavement, or the cure time can be extended to 60 or more minutes, suitable for larger projects that can take many hours to complete. The product, when mixed, handles like easily pourable concrete mix, but acts like a hot mix repair when cured.