The present invention relates to an inorganic binder system comprising blast furnace slag, and at least one solid alkali metal silicate, wherein the inorganic binder system is obtainable by co-grinding a mixture comprising the blast furnace slag and the at least one solid alkali metal silicate.

Building construction materials containing inorganic hydraulically settable binder(s) and at least one protective colloid-stabilized polyvinyl acetate copolymer having specific ranges of vinyl acetate, vinyl chloride, and ethylene show improved adhesion under widely varying conditions when used in hydraulically setting construction materials, especially after thermal storage conditions.

A colored composition including a resin system, and a colorized filler. The colorized filler includes particles including a polymer. The particles have a density less than 2.6 g/cc and an average particle size from 100 microns to 600 microns.

A grout material for heat transfer according to the present invention comprises a sand particle; and an outer layer coated on the surface of individual sand particle, wherein the outer layer is composed of a mixture of graphite powder and a hydraulic inorganic binder.

A method for producing the grout material for heat transfer according to the present invention comprises the steps of: mixing graphite powder and a hydraulic inorganic binder; coating the mixture of graphite powder and the hydraulic inorganic binder on the outer surface of the sand particles while stirring the sand particles by spraying water; curing the hydraulic inorganic binder on the sand particles on which the mixture of graphite powder and the hydraulic inorganic binder is coated; and drying the sand particles on which the mixture of graphite powder and the hydraulic inorganic binder is coated.

The grout material for heat transfer is mixed with the mixture of water and bentonite powder to form a slurry and is used for a grouting process in which the prepared slurry is injected to give water-proof property to the grout material for heat transfer.

A cementitious composition with accelerated curing at low temperatures particularly at temperatures <5° C., especially at temperatures <0° C. The cementitious composition consists of 2 components with a first component A including at least one ordinary Portland cement, at least one cement selected from calcium aluminate cement and/or calcium sulfoaluminate cement, a powder P, selected from the group consisting of carbonates or hydrogen carbonates of alkali and/or alkaline earth metals, optionally aggregates, optionally other additives and a second component B comprising at least one accelerator, an anti-freeze agent, water, and optionally other additives. The composition shows increased development of compressive strength, maintain good workability, and have particularly low shrinkage, also when cured at temperatures <5° C., especially <0° C., and as low as −10° C.

Methods are disclosed in which an additive is used for controlling the flexibility of a hydraulic binder composition, where the additive includes a silane-functional polymer, the silane-functional polymer being a silane-functional polyurethane polymer and/or a silane-functional polyether.

Bentonite-based grout fluids and methods of using the grout fluids are provided. A method of using a grout fluid includes placing a geothermal conduit in at least one hole in the earth, providing a grout fluid consisting essentially of water and a bentonite-based grout, wherein the bentonite-based grout consists essentially of calcium carbonate, a bentonite, one or more grout-setting modifiers, and one or more thermally conductive materials, introducing the grout fluid into a space between the geothermal conduit and sidewalls of the at least one hole so that the grout fluid is in contact with the geothermal conduit, and after introducing the grout fluid, allowing the grout fluid to set to fix the geothermal conduit to the at least one hole, wherein after setting, the grout fluid has a hydraulic conductivity of between about 1×10.sup.−7 cm/s and about 1×10.sup.−9 cm/s.

The present invention relates to the use of a sequenced polymer as an agent for monitoring the filtrate and the rheology of a fluid injected under pressure into an oil rock, wherein the fluid comprises solid particles and/or is brought into contact with solid particles within the oil rock after being injected, the polymer comprising: a first block which is adsorbed onto at least some of the particles; and a second block having a composition other than that of the first block and a mean molecular weight of more than 10,000 g/mol, for example more than 100,000 g/mol, and which is soluble in the fluid.

The present invention relates to a composition for manufacturing methylene malonate cementitious hybrid systems. Particularly, the invention relates to a composition comprising at least one methylene malonate monomer (A), at least one methylene malonate polymer (B), at least one acidic stabilizer (C), and cement (D), to the preparation thereof, and to the use of the composition in construction, particularly as a surface protection material, a structural consolidation material or as a material used in underground constructions.

Cementitious compositions include: a) 4-80 wt.-%, preferably 26-75 wt.-%, especially 30-66 wt.-% of a cementitious binder, especially of Ordinary Portland Cement, b) 5-95 wt.-%, preferably 20-73 wt.-% more preferably 33-66 wt.-%, of aluminum oxide, and c) 1-15 wt.-% preferably 2-10 wt.-%, more preferably 3-6 wt.-% of fibers. Such cementitious compositions have a very high strength and are used for example for concrete repair or as grouting materials.