Biomaterials, in particular bone foams, a process for preparing such materials as well as an applicator for applying the biomaterials directly to the patient's application site, and the use of a composition comprising water, a surfactant and a propellant in the preparation of a bone foam for the preparation of a calcium phosphate foam wherein the foam is obtainable by the mixture of at least two phases, a first phase comprising water and optionally a propellant, a second phase comprising one or more sources for calcium and/or phosphate, and wherein the foaming is performed during the mixture of the at least two phases to provide an improved calcium phosphate foam, process for the preparation of a calcium phosphate foam, use of a composition, solid state structure, calcium phosphate cement foam and bone foam applicator.

A method for producing ultra-lightweight concrete (ULWC), includes: generating CO.sub.2 foam including nanobubbles; forming a brine paste including nanocrystals and nanopores by mixing the nanobubbles with a brine solution; generating the CO.sub.2 foam including microbubbles, where pore sizes of the microbubbles are larger than pore sizes of the nanobubbles; mixing the microbubbles into the brine paste, where the nanocrystals comprised in the brine paste distributes along a surface of each microbubble; and mixing fiber hairs into the brine paste and the microbubbles. Ultra-lightweight aggregate (ULWA) may be formed using the ULWC. A method for producing ULWC panels, includes: printing creases on alkali-resistant fiber paper sheets; folding the fiber paper sheets along the creases; affixing the folded fiber paper sheets into a 3D structure with open channels; injecting atomized brine water into surfaces of the open channels; and injecting CO.sub.2 gas into the open channels until filled with carbonate crystals.

A manufacturing method of a ceramic formed body, including: a mixing step in which a raw material for forming a ceramic formed body is dryly mixed, and then, a liquid is added to the obtained dry mixture to wetly mix the mixture; a kneading step in which a mixture obtained in the mixing step is kneaded; an injection step in which supercritical carbon dioxide in the state of supercritical fluid is injected into a kneaded product obtained in the kneading step; and a forming step in which a forming raw material containing the supercritical carbon dioxide obtained in the kneading step and the injection step is extruded to form the ceramic formed body.

The present invention relates to a low water content plastic composition comprising hydraulic cement and a method for manufacturing the same. The present invention provides a low water content plastic composition comprising hydraulic cement and a method for manufacturing the same, the composition being characterized by losing flowability and having plasticity since from a flowable, uniform mixture state of hydraulic cement and water with polyol and isocyanate compounds which are raw materials for forming foamed polyurethane, part of the water used in the mixture is separated and removed due to foaming in the course of formation of the foamed polyurethane.

The present invention relates to a low water content plastic composition comprising hydraulic cement and a method for manufacturing the same. The present invention provides a low water content plastic composition comprising hydraulic cement and a method for manufacturing the same, the composition being characterized by losing flowability and having plasticity since from a flowable, uniform mixture state of hydraulic cement and water with polyol and isocyanate compounds which are raw materials for forming foamed polyurethane, part of the water used in the mixture is separated and removed due to foaming in the course of formation of the foamed polyurethane.

A cement composition including an aqueous fluid, inorganic cement, a foaming agent, a gas generating agent, and a stabilizer composition comprising graphene oxide. The cement composition is placed in a subterranean well and allowed to set and form a set cement. The presence of the graphene oxide results in the set cement having a greatest percent deviation from a measured slurry density of less than about 1.5%.

A cement composition including an aqueous fluid, inorganic cement, a foaming agent, a gas generating agent, and a stabilizer composition comprising graphene oxide. The cement composition is placed in a subterranean well and allowed to set and form a set cement. The presence of the graphene oxide results in the set cement having a greatest percent deviation from a measured slurry density of less than about 1.5%.

Cementitious compositions comprising lime, which may be foamed or non-foamed compositions, may increase carbon dioxide uptake of the cementitious compositions. Said cementitious compositions may be used in various cementing methods including pre-casting methods, cast-in-place methods, and primary or secondary cementing operations in a wellbore. The carbon dioxide may be added to the cementitious compositions during mixing, during pre-conditioning, during curing, or any combination thereof. Further, the carbon dioxide may be delivered as a gas (e.g., a gas that includes 1 vol % to 100 vol % carbon dioxide) or as a gas-entrained admixture that includes the gas, water, and a foaming agent.

Cementitious compositions comprising lime, which may be foamed or non-foamed compositions, may increase carbon dioxide uptake of the cementitious compositions. Said cementitious compositions may be used in various cementing methods including pre-casting methods, cast-in-place methods, and primary or secondary cementing operations in a wellbore. The carbon dioxide may be added to the cementitious compositions during mixing, during pre-conditioning, during curing, or any combination thereof. Further, the carbon dioxide may be delivered as a gas (e.g., a gas that includes 1 vol % to 100 vol % carbon dioxide) or as a gas-entrained admixture that includes the gas, water, and a foaming agent.

A method for producing a foamed mineral binder composition includes the steps of: a) separately providing: (i) an aqueous foam; and (ii) an aqueous slurry including a mineral binder and a dispersed polymer; (b) mixing the slurry of the mineral binder with the aqueous foam to obtain the foamed mineral binder composition; whereby during the production of the foamed mineral binder composition, carbon dioxide and/or a carbonate is provided such that it is incorporated in the foamed mineral binder composition.