A blended composition for use as an admixture for cementitious materials, compressing polystyrene dissolved in a cyclic terpene, and capable of modifying the strength, plasticity, and water-permeability of the cement.

Hydrophobic shaped silica bodies having low density and low thermal conductivity are produced by forming a dispersion of silica in a solution of binder and organic solvent, and removing the solvent and shaping to form a shaped body. The shaped bodies retain their hydrophobicity, are stable with regards to shape, and are useful in acoustic and thermal insulation.

Hydrophobic shaped silica bodies having low density and low thermal conductivity are produced by forming a dispersion of silica in a solution of binder and organic solvent, and removing the solvent and shaping to form a shaped body. The shaped bodies retain their hydrophobicity, are stable with regards to shape, and are useful in acoustic and thermal insulation.

Compositions may include a calcium lignosulfonate salt having a chemical structure (I), wherein a total number of guaiacyl groups is 2 to 10. The compositions may further include an alcohol, an aldehyde, and water. Cement slurries may include a lignosulfonate-based cement dispersant including a calcium lignosulfonate salt having a chemical structure (I), an alcohol, an aldehyde, and water, wherein a total number of guaiacyl groups in the chemical structure (I) is 2 to 10. The cement slurries may further include a cement and water. Methods may include introducing a cement slurry into a wellbore penetrating a subterranean formation, wherein the cement slurry comprises a lignosulfonate-based cement dispersant, a cement, and water, and allowing the cement slurry to set to a concrete in a downhole zone of interest.

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A method for producing a floor construction on a substrate by applying a screed to the substrate and then applying a seal to the screed. The screed is based on a screed composition which includes an aluminate binder, a calcium sulfate binder and fillers, where the amount of filler is 30 to 80 wt % and the total amount of aluminate binder and calcium sulfate binder is 20 to 70 wt % and the weight ratio of aluminate binder to calcium sulfate binder is in the range from 1:1 to 1:5. The method enables a short production time and at the same time improved adhesion between screed and seal.

A method for producing a floor construction on a substrate by applying a screed to the substrate and then applying a seal to the screed. The screed is based on a screed composition which includes an aluminate binder, a calcium sulfate binder and fillers, where the amount of filler is 30 to 80 wt % and the total amount of aluminate binder and calcium sulfate binder is 20 to 70 wt % and the weight ratio of aluminate binder to calcium sulfate binder is in the range from 1:1 to 1:5. The method enables a short production time and at the same time improved adhesion between screed and seal.

The present invention relates to an aerogel composite and a preparation method thereof. The preparation method of the aerogel composite of the present invention comprises the following steps; preparing a hydrophobic gel (step 1); dispersing fiber in a solvent to prepare a solution (step 2); adding the hydrophobic gel above in the solution of step 2 and stirring the mixture to prepare a fiber and hydrophobic gel mixed solution (step 3); separating floc from the mixed solution of step 3 (step 4); and drying the floc (step 5). According to the preparation method of the aerogel composite of the present invention, a high performance aerogel composite having various shapes can be prepared.

The present invention relates to an aerogel composite and a preparation method thereof. The preparation method of the aerogel composite of the present invention comprises the following steps; preparing a hydrophobic gel (step 1); dispersing fiber in a solvent to prepare a solution (step 2); adding the hydrophobic gel above in the solution of step 2 and stirring the mixture to prepare a fiber and hydrophobic gel mixed solution (step 3); separating floc from the mixed solution of step 3 (step 4); and drying the floc (step 5). According to the preparation method of the aerogel composite of the present invention, a high performance aerogel composite having various shapes can be prepared.

Provided herein are cementitious compositions comprising a non-aqueous fluid and an alkali-activated material. The non-aqueous fluid can include a natural oil, a synthetically derived oil, one or more surfactants, or a combination thereof. In some embodiments, the non-aqueous fluid can include an oil based mud, a synthetic based mud, or a mixture thereof. The alkali-activated material in the cementitious composition can be derived from an aluminosilicate material and an alkaline activator. In some embodiments, the aluminosilicate material includes fly ash. The alkaline activator can be selected from an alkali-hydroxide, an alkali-silicate, an alkali carbonate, an alkali bicarbonate, an alkali sulfate, and a mixture thereof. Provided herein are also wellbore servicing composition, such as compositions to reduce lost circulation of drilling fluids or cement a casing into the borehole, comprising the cementitious compositions and methods for preparing and using the cementitious compositions.

Provided herein are cementitious compositions comprising a non-aqueous fluid and an alkali-activated material. The non-aqueous fluid can include a natural oil, a synthetically derived oil, one or more surfactants, or a combination thereof. In some embodiments, the non-aqueous fluid can include an oil based mud, a synthetic based mud, or a mixture thereof. The alkali-activated material in the cementitious composition can be derived from an aluminosilicate material and an alkaline activator. In some embodiments, the aluminosilicate material includes fly ash. The alkaline activator can be selected from an alkali-hydroxide, an alkali-silicate, an alkali carbonate, an alkali bicarbonate, an alkali sulfate, and a mixture thereof. Provided herein are also wellbore servicing composition, such as compositions to reduce lost circulation of drilling fluids or cement a casing into the borehole, comprising the cementitious compositions and methods for preparing and using the cementitious compositions.