The present invention relates to a quick and low-stress setting chemical formulation for construction, containing at least one binding agent on the basis of calcium sulfate, at least an ettringite-forming agent, at least one activator, at least one filler, at least one redispersable dispersion powder and optionally additives and to the use of the chemical formulation for construction for producing thin-layered balancing masses, self running and solid fillers, screed binding agents or screed mortars, tile adhesive mortars, jointing mortars and sealing sludges.

Construction chemical formulation

The present invention relates to a construction chemical formulation which cures rapidly and with low stress and which comprises calcium sulfate, an ettringite former, an activator, an aggregate and a polymeric binder, and also to the use of the construction chemical formulation for producing sealants, coatings, adhesives, screeds, or leveling compositions.

The invention relates to the technical field of furniture decoration, in particular to a GRG decorative board. The GRG decorative board is formed by curing gypsum slurry, wherein the gypsum slurry comprises, by weight, 4000-5000 parts of gypsum powder, 1200-1400 parts of water, 3-4 parts of delay agents and 0.3-0.5 part of a defoaming agent. Compared with the prior art, ingredients of gypsum raw material of the GRG decorative board are reasonable, the overall performance of the prepared GRG decorative board is ensured, and the GRG decorative board has the characteristics of being small in linear variable, good in forming performance, light in weight and low in cost, and can be used for high-grade building decoration, handicraft materials and the like. The invention further provides a preparation method of the GRG decorative board.

GRG decorative board and preparation method thereof

A composition for waterproofing a building substrate is disclosed. The composition comprises a cementitious mixture comprising calcium sulphoaluminate and at least one other cementitious material. The composition further comprises latex in a ratio with the cementitious mixture of at least 1.2:1. A method of forming a waterproofing membrane on a building substrate is further disclosed. In addition, methods of application of the composition to a surface are disclosed, including by spraying of the composition onto the surface.

Waterproofing compositions and methods

The invention provides a composite shotcrete material for an underground coal mine and a using method of the composite shotcrete material, and belongs to the technical field of coal mine safety protection and building materials. The composite shotcrete material comprises, by weight, 1-2 parts of cement, 2-4 parts of sand, 2-4 parts of crushed stone, 0.05-5 parts of aluminum oxide, 4-8 parts of calcium carbonate, 0.07-3 parts of sodium hydroxide and 0.12-3 parts of dry powder accelerator. The using method comprises the steps of uniformly stirring the materials to obtain a mixture, placing the mixture into a bag, transporting the mixture to the working surface of an underground roadway of the mine, mixing the mixture with water to obtain slurry, and spraying the slurry to the wall surface ofthe well wall and the roof of the mine. The adhesive property of the mixture is good, condensation is rapid, the strength is increased at the later stage, rebound of the slurry can be avoided, the functions of wind prevention and water control of the well wall and support reinforcement are achieved, transportation and carrying are convenient, the labor intensity of underground personnel can be reduced, and generation of silicosis can be prevented. The slurry does not hurt the skin of the body and hands, and is green and environment-friendly mixed spray slurry.

Composite shotcrete material for underground coal mine and using method thereof

Die vorliegende Erfindung betrifft ein mineralisches Bindemittelsystem, umfassend ein mineralische Bindemittel B1 von Calciumaluminaten, welche ein Verhaltnis C/A von Calciumoxid C zu Aluminiumoxid A von 0,7 bis 1,1 hat, ein mineralisches Bindemittel B 2 von Calciumaluminaten, welche ein Verhaltnis C/A von Calciumoxid C zu Aluminiumoxid A von 1,2 bis 2,7 hat, und mindestens einen Sulfattrager, einen Trockenmortel, welcher dieses mineralische Bindemittelsystem umfasst, einen feuchten Mortel auf Basis dieses Trockenmortels sowie die Verwendung des Trockenmortels als Fliesenklebemortel, Spachtelmasse, Dichtschlamme, Fugenmortel, Estrichbindemittel, Estrichmortel, Reparaturklebstoff und/oder Verbundabdichtung. The present invention relates to a mineral binder system comprising a mineral binder B1 of calcium, which has a ratio C / A of calcium C to alumina A of 0.7 to 1.1, a mineral binder B 2 of calcium, which is a ratio of C / A of calcium oxide C has to alumina A 1.2 to 2.7, and at least one sulfate carrier, a dry mortar comprising this mineral binder system, a wet mortar based on this dry mortar and the use of the dry mortar as tile adhesive mortar, putty, Dichtschlamme , tile grout, screed binders screeds, repair adhesive and / or bonded waterproofing.

Ternary binding agent system based on calcium aluminates

A mineral binder system that includes a mineral binder B1 of calcium aluminates having a ratio C/A of calcium oxide C to aluminum oxide A of 0.7 to 1.1, a mineral binder B2 of calcium aluminates having a ratio C/A of calcium oxide C to aluminum oxide A of 1.2 to 2.7, and at least one sulfate carrier is provided. Also provided are a dry mortar which includes this mineral binder system, a wet mortar based on the disclosed dry mortar, and the use of the dry mortar as tile adhesive mortar, levelling compound, waterproofing slurry, grout mortar, screed binder, screed mortar, repair adhesive, and/or damp proof membrane.

Markus Gretz

Papers

Construction chemical formulation

Ternary binding agent system based on calcium aluminates

Ternary binder system

Chemical formulation for construction

Système de liant ternaire à base des aluminates de calcium