Methods and compositions for treating a subterranean formation with salt-tolerant cement slurries including treating a salt-containing subterranean formation having sodium salts, potassium salts, magnesium salts, calcium salts, or any combination thereof comprising: providing a salt-tolerant cement slurry comprising: a base fluid, a cementitious material, a pozzolanic material, a salt-tolerant fluid loss additive, a salt additive, and optionally, an elastomer, a weight additive, a fluid loss intensifier, a strengthening agent, a dispersant, or any combination thereof; introducing the salt-tolerant cement slurry into the subterranean formation; and allowing the salt-tolerant cement slurry to set.

Beneficial use structures are disclosed that include coal combustion residuals (CCR) mixed with water and a binder to form a structural material and adapted to be compacted for use in the formation of the beneficial use structure. Various structures having beneficial uses described, including survival bunkers, composting pits, mine reclamation encapsulation and carbon sequestration facilities, water storage facilities, compressed air storage facilities, carbon sequestration/mineral carbonation facilities and a pumped hydroelectric facility adapted for use with a lock system of a waterway.

A cementitious binder, includes a hydraulic binder; a first siliceous based material, which has a (SiO.sub.2)/(Al.sub.2O.sub.3) ratio by weight greater than 2.5; a second siliceous based material, which is different from the first siliceous based material and has (a) a (SiO.sub.2)/(Al.sub.2O.sub.3) ratio by weight greater than 10 and (b) a BET specific surface area greater than 5 m.sup.2/g; and an aluminum based material, which has a (SiO.sub.2)/(Al.sub.2O.sub.3) ratio by weight lower than 2.5, wherein 0.09<Al.sub.EFF/(Al.sub.EFF+Si.sub.EFF)<0.28, where Al.sub.EFF=molar content of alumina in the hydraulic binder, and Si.sub.EFF=molar content of silica in the first siliceous based material for particles having a size lower than 3 m+molar content of silica in the second siliceous based material.

A dry mortar composition includes cement and biomass ashes, in a total amount of 10 to 50 wt %, and aggregates in a total amount of 50 to 90 wt %, wherein the weight ratio of biomass ashes to cement ranges from 40:60 to 90:10. The mortar is especially useful as a tile adhesive.

A batch composition for concrete includes a cementious material and aggregate material, the cementious material including at least 50% Portland cement and at least 1% of a dolomite mineral filler. The batch composition may be mixed with sufficient water to cause the cementious material in the batch composition to set and bind the entire mass to form a concrete.

A magnesium oxychloride cement (MOC) incorporating an emulsion of active cationic organo-silane and method of making same.

A magnesium oxychloride cement (MOC) incorporating an emulsion of active cationic organo-silane and method of making same.

The invention comprises a product. The product comprises a carbonation aid or a microporous material or a combination thereof and a carbonatable mineral containing one or more of un-carbonated Ca, Mg, Na, K, Fe, wherein the carbonation aid facilitates the conversion of one or more of CaO, MgO, Na.sub.2O, K.sub.2O or FeO to a carbonate or a CO.sub.3 containing mineral in the presence of CO.sub.2, wherein the carbonatable mineral has a volume-based mean particle size of less than or equal to 100 m and wherein one or more of the carbonation aid or a microporous material or a combination thereof or the carbonatable mineral has carbon dioxide bound thereto at a concentration greater than its atmospheric concentration.

A method for preparing an ettringite binder from an aluminosilicate source, a calcium sulfate source and a calcium hydroxide (or slaked lime, CH) source, the binder including a catalyst and/or an activator. Also the use of the ettringite binder produced by the method for producing cement, masonry cement, mortar, concrete, road binders and/or formulated lime.

A density controlled cold fusion concrete cementitious spray applied fireproofing material including a mixture of water, one or more of silicon dioxide, expanded glass, vermiculite, bottom ash, perlite, expanded shale, or other lightweight aggregates of various diameter sizes ranging from about 0.025 mm to about 12.5 mm in diameter; anhydrous or hydrous sodium or potassium metasilicate; waste from steel production consisting of Granulated Ground Blast Furnace Slag (GGBFS); high calcium or low calcium waste from coal combustion (fly ash or bottom ash); sodium tetraborate, sodium citrate dihydrate, citric acid, or boric acid; and an alkali-resistant micro-.