Abstract: A process to prepare a solid cement composition; includes adding a meltable compound to an aqueous slurry of cement and; mixing until a homogeneous dispersion is obtained. The dispersion is placed in a mould, where the dispersion is set by hydration. Part of the meltable compound is melted at a temperature range of which the maximum is above the melting point of the meltable compound and a minimum below the melting point of the meltable compound. A material, either still as a dispersion or an already setting cement is exposed to heat development or a temperature gradient such that the temperature is at least above the congealing point of the meltable compound to obtain a solid cement composition.

Abstract: A method of treating a subterranean formation via well bore may include introducing a plurality of particles into the subterranean formation via the well bore, each particle having a substrate and a layer of cement on the substrate. The cement may be in a state of suspended hydration and the method may include introducing moisture to the subterranean formation via the well bore. The method may also include allowing the particles and the moisture to contact one another. Contact between the particles and the moisture may cause the cement to move from a state of suspended hydration to a state of secondary hydration.

Abstract: A method of treating a subterranean formation via well bore may include introducing a plurality of particles into the subterranean formation via the well bore, each particle having a substrate and a layer of cement on the substrate. The cement may be in a state of suspended hydration and the method may include introducing moisture to the subterranean formation via the well bore. The method may also include allowing the particles and the moisture to contact one another. Contact between the particles and the moisture may cause the cement to move from a state of suspended hydration to a state of secondary hydration.

Abstract: Method of reducing the odor of sulphur-bound products, in particular modified sulphur or sulphur concrete, comprising contacting the sulphur-bound products with a bleaching agent, like e.g. sodium hydrochloride or hydrogen peroxide. The resulting sulphur-bound products emit reduced levels of sulphur-containing gases such as H2S and SO2 and have a reduced odor.

Abstract: Method of reducing the odour of sulphur-bound products, in particular modified sulphur or sulphur concrete, comprising contacting the sulphur-bound products with a bleaching agent, like e.g. sodium hydrochloride or hydrogen peroxide. The resulting sulphur-bound products emit reduced levels of sulphur-containing gases such as H2S and SO2 and have a reduced odour.

Abstract: The present invention provides a modified sulphur composition comprising: a first modified sulphur prepared by admixing molten elemental sulphur with one or more olefinic sulphur modifiers selected from, for example, the group consisting of norbornenes, dicyclopentadiene, cyclopentadiene, oligomers of dicyclopentadiene; and a second modified sulphur prepared by admixing molten elemental sulphur with one or more olefinic sulphur modifiers selected from styrene and derivatives thereof, dicyclopentadiene, cyclopentadiene, dipentene, oligomers of dicyclopentadiene, naphthalene and limonene. The first modified sulphur is different than the second modified sulphur.