Methods for producing compositions that prevent, mitigate or delay the onset of corrosion of iron or steel (e.g., plain carbon steel) components used as reinforcement or otherwise at least partially embedded in carbonated concrete composite materials and objects based on carbonatable calcium silicate cement are disclosed.

A composition comprising: (a) fly ash cementitious binder; and (b) a chemical activator selected from sodium silicate, potassium silicate, sodium sulfate, sodium phosphate, calcium sulfate, potassium sulfate, potassium phosphate, CaO, Fe.sub.2O.sub.3, sodium chloride, calcium chloride, fine fraction of concrete waste from construction or demolition, cement kiln dust, or a combination thereof, wherein the fly ash is the only cementitious binder present in the composition and the CaO activator, if present, is present in an amount 10 weight percent, based on the total dry weight of the composition.

Systems and methods for detecting or monitoring treatment fluids in subterranean formations are provided. In certain embodiments, the methods comprise: providing an enhanced treatment fluid that comprises at least a base fluid and one or more contrast enhancement agents, which may include dielectric materials, magnetic materials, dispersive materials, and/or any combination thereof; and introducing the enhanced treatment fluid into at least a portion of a well bore penetrating a portion of a subterranean formation in the course of certain operations in the well bore.

Systems and methods for detecting or monitoring treatment fluids in subterranean formations are provided. In certain embodiments, the methods comprise: providing an enhanced treatment fluid that comprises at least a base fluid and one or more contrast enhancement agents, which may include dielectric materials, magnetic materials, dispersive materials, and/or any combination thereof; and introducing the enhanced treatment fluid into at least a portion of a well bore penetrating a portion of a subterranean formation in the course of certain operations in the well bore.

Disclosed is to a calcium aluminate cement, including a calcium aluminate with a first crystallised mineralogical phase of calcium dialuminate CA2 including one calcium oxide CaO for two aluminium oxides Al.sub.2O.sub.3 and/or a second crystallised mineralogical phase of dicalcium alumina silicate C2AS including two calcium oxides CaO for one aluminium oxide Al.sub.2O.sub.3 and one silicon dioxide SiO.sub.2. The mass fraction of all of the first and second mineralogical phases in the calcium aluminate is greater than or equal to 80%.

The invention relates to a new concrete admixture based on metal silicate hydrates and ettringite for improving the strength development at both early and longer ages of low-carbon cementitious compositions based on Portland cement and supplementary cementitious materials SCMs, including fly ash, slag, natural pozzolans, silica fume, calcined clays and fillers, such as limestone powder.

To provide a dental temporary calcined body including an inside colored by a coloring material wherein, the inside of the dental temporary calcined body is colored by a coloring liquid containing the coloring material and a penetrant containing a permeating liquid.

To provide a dental temporary calcined body including an inside colored by a coloring material wherein, the inside of the dental temporary calcined body is colored by a coloring liquid containing the coloring material and a penetrant containing a permeating liquid.

A traceable cement mixture includes a volume of cementitious material, a plurality of taggants disposed within the volume of cementitious material according to a taggant mix ratio that is specified based on a quality of the cementitious material, and a volume of an additional material mixed with the volume of cementitious material according an additional material mix ratio.

A traceable cement mixture includes a volume of cementitious material, a plurality of taggants disposed within the volume of cementitious material according to a taggant mix ratio that is specified based on a quality of the cementitious material, and a volume of an additional material mixed with the volume of cementitious material according an additional material mix ratio.