A composition including: a first component A, includes: between 68 and 99.9 wt.-% of an aqueous dispersion of at least one polymer, the aqueous dispersion including the polymer with an amount of between 20 and 90 wt.-%; between 0 and 2 wt.-% of a nonionic or ionic dispersing agent; a second component B, includes: between 10 and 30 wt.-% of a nonionic, non-aqueous liquid carrier, between 0 and 20 wt.-% of calcium sulfate, between 10 and 89.9 wt.-% of at least one hydraulic binder, between 0 and 10 wt.-% of a thixotropy agent; wherein both components A and B are prepared and stored separately and mixed directly before application; and with the proviso that the first component A furthermore includes: between 0.1 and 15 wt.-% of a monovalent metal salt, and the second component B furthermore comprises: between 0.1 and 25 wt.-% of a polyamine.

A method of using a gas control additive to provide gas migration control in a wellbore includes the steps of mixing the gas control additive with a cement to form a cement slurry, where the gas control additive includes a semi-permeable membrane and a scrubbing agent, such that the semi-permeable membrane forms a shell around a core such that the scrubbing agent is in the core, introducing the cement slurry to the wellbore, and reacting the scrubbing agent with an antagonistic gas to produce a helper byproduct, where the antagonistic gas migrates from a hydrocarbon-bearing formation into the wellbore and permeates through the semi-permeable membrane to the core of the gas control additive.

An article according to an exemplary embodiment of this disclosure includes a substrate and a bond coat disposed on the substrate. The bond coat includes a matrix. The matrix includes regions of ?-cristobalite. The article also includes a plurality of gettering particles disposed in the matrix, a plurality of diffusive particles disposed in the matrix, and an additive operable to stabilize the regions of ?-cristobalite at ambient temperatures dispersed in the matrix. An article and a method of coating an article are also disclosed.

An article according to an exemplary embodiment of this disclosure includes a substrate and a bond coat disposed on the substrate. The bond coat includes a matrix. The matrix includes regions of ?-cristobalite. The article also includes a plurality of gettering particles disposed in the matrix, a plurality of diffusive particles disposed in the matrix, and an additive operable to stabilize the regions of ?-cristobalite at ambient temperatures dispersed in the matrix. An article and a method of coating an article are also disclosed.

A soluble alkali metal compound for adjusting, in particular reducing, the viscosity of an aluminum sulfate suspension, the alkali metal being selected from among sodium, potassium and/or lithium.

A soluble alkali metal compound for adjusting, in particular reducing, the viscosity of an aluminum sulfate suspension, the alkali metal being selected from among sodium, potassium and/or lithium.

The present invention relates to a binder composition comprising Portland cement clinker, calcium sulfate, an inorganic sulfate source having a solubility higher than 100 g/l at 20 C. polyalcohol and/or metal salts thereof, a carbonate selected of the group consisting of organic carbonate, alkali carbonate, and mixtures thereof, a component F), and dispersant having a charge density of more than 0.80 eq/g.

It is to provide a powdered-state geopolymer composition comprising an active filler comprising a carbonated slag fine powder and a pozzolanic material powder, an alkali source in a powdered-state comprising at least one selected from alkali metal silicate powder, alkali metal carbonate powder, wherein the carbonated slag fine powder comprises 0.1 mass % or more and 2.0 mass % or less of CO.sub.2, and comprises 0.26 mass % or more and 1.0 mass % or less of bonding water.

A method for synthesizing metakaolin-based alkali-activated composites with improved fresh and mechanical properties over previous methods. This can be achieved, for example, by employing waste from the steel production industry, i.e., the metakaolin in the composites can be replaced by electric-arc furnace dust (EAFD) at high replacement levels (up to 90%). The replacement by EAFD (1-90%) can elongate the setting time, improve the mix flowability/workability, enhance the compressive strength, reduce the water to binder content and/or alkaline solution needed for the binder activation of alkali-activated composites. Additionally, another embodiment relates to a procedure for producing alkali-activated composites with 100% EAFD. In addition to solving issues related to the manufacturing of metakaolin-based alkali-activated composites, or similar composites thereof, the present subject matter provides a way to dispose of hazardous EAFD in large quantities.

A method for synthesizing metakaolin-based alkali-activated composites with improved fresh and mechanical properties over previous methods. This can be achieved, for example, by employing waste from the steel production industry, i.e., the metakaolin in the composites can be replaced by electric-arc furnace dust (EAFD) at high replacement levels (up to 90%). The replacement by EAFD (1-90%) can elongate the setting time, improve the mix flowability/workability, enhance the compressive strength, reduce the water to binder content and/or alkaline solution needed for the binder activation of alkali-activated composites. Additionally, another embodiment relates to a procedure for producing alkali-activated composites with 100% EAFD. In addition to solving issues related to the manufacturing of metakaolin-based alkali-activated composites, or similar composites thereof, the present subject matter provides a way to dispose of hazardous EAFD in large quantities.