The present application provides a gas-generating aqueous fluid containing a gas-generating compound like an azo compound, and an organic amine like a primary, secondary or tertiary amine, a hydrazine, a hydrazide, or a semicarbazide. The aqueous fluid may also a viscosifier, and a foaming surfactant. The present application also provides a method of using the gas-generating composition to modulate density of a wellbore fluid for use in downhole applications. The method optionally includes adding an oxidizer to the wellbore fluid.

Provided is a concrete hardener composition. The concrete hardener composition includes a sodium silicate compound, an acid compound and a balance amount of solvent. The sodium silicate compound includes sodium silicate or a mixture of sodium silicate and sodium methylsilicate. The acid compound includes acetic acid, glycolic acid, ethylenediaminetetraacetic acid, tartaric acid, nitric acid, boric acid or a combination thereof. The solvent includes water or a mixed solution of water and polyol. Based on the total weight of the concrete hardener composition, the content of silicon is between 5 wt % and 15 wt %, and the content of the acid compound is between 2 wt % and 30 wt %.

Provided is a concrete hardener composition. The concrete hardener composition includes a sodium silicate compound, an acid compound and a balance amount of solvent. The sodium silicate compound includes sodium silicate or a mixture of sodium silicate and sodium methylsilicate. The acid compound includes acetic acid, glycolic acid, ethylenediaminetetraacetic acid, tartaric acid, nitric acid, boric acid or a combination thereof. The solvent includes water or a mixed solution of water and polyol. Based on the total weight of the concrete hardener composition, the content of silicon is between 5 wt % and 15 wt %, and the content of the acid compound is between 2 wt % and 30 wt %.

Provided herein are compositions and their methods of use to adhere (e.g., in wet and dry environments) a variety of materials together.

The present disclosure discloses an oil shale semicoke adsorption inhibitor and use thereof in concrete preparation. The adsorption inhibitor is prepared by the following steps: sequentially adding 50-52.5 weight parts of an anti-corrosion rheological agent, 5-20 weight parts of methanol, 0.5-2 weight parts of sulfonated melamine, 2-5 weight parts of EDTA, 20-30 weight parts of an organosilicon compound, and 5-10 weight parts of stearate into a mixing container, and performing stirring well. The anti-corrosion rheological agent is a microbead. The adsorption inhibitor solves problems of strong water absorption, high adsorption of a water reducing agent, etc. of oil shale semicoke, reduces the use amount of the water reducing agent in concrete production, and can also reduce power consumption during grinding, thereby realizing high-value resource utilization of the oil shale semicoke.

The present disclosure provides polymeric systems that exhibit enhanced viscosity and proppant transport properties while providing enhanced particle dispersion capabilities.

The present disclosure provides polymeric systems that exhibit enhanced viscosity and proppant transport properties while providing enhanced particle dispersion capabilities.

Method for manufacturing a concrete from activated slag, comprising at least the steps consisting of: a) arranging a premixture P of water and granulates, the temperature of the premixture P being at least equal to 10° C., b) arranging an activation system A comprising at least a co-binder, a chelating agent, an alkali metal carbonate and a carbonated material different from the alkali metal carbonate, c) incorporating the activation system A and a slag S by mixing them into the premixture P, the activation system A and slag S being introduced successively and/or simultaneously, d) continuing the mixing until a fresh concrete is obtained, and e) allowing the fresh concrete to cure.

Method for manufacturing a concrete from activated slag, comprising at least the steps consisting of: a) arranging a premixture P of water and granulates, the temperature of the premixture P being at least equal to 10° C., b) arranging an activation system A comprising at least a co-binder, a chelating agent, an alkali metal carbonate and a carbonated material different from the alkali metal carbonate, c) incorporating the activation system A and a slag S by mixing them into the premixture P, the activation system A and slag S being introduced successively and/or simultaneously, d) continuing the mixing until a fresh concrete is obtained, and e) allowing the fresh concrete to cure.

A bituminous emulsion that is capable of being used as a penetrating prime emulsion. The penetrating prime emulsion may be capable of penetrating compacted soil without the use of solvent, and may toughen quickly to allow early application of a paved layer on the surface. The bituminous emulsion may comprise bituminous material and an emulsifier comprising octylphenol ethoxylates, and optionally further comprising tallow diamine betaines or other betaines.