A method for recycling a used rotor blade of a wind turbine includes processing the used rotor blade into a plurality of material fragments. The method also includes treating the plurality of material fragments to remove at least a portion of the at least one composite material and expose the at least one fiber material of the used rotor blade. Further, the method includes mixing the treated plurality of material fragments with, at least, an alkali activator to form a usable geopolymer concrete.

A concrete marine habitat substrate tile that is portable for a human and which provides an increased calcium carbonate content and interstitial spaces for feeding and providing a habitat for developing oysters is described. Specifically provided is a reef restoration and oyster growing tile comprising: a concrete tile comprising at least 25% by weight calcium carbonate; wherein the concrete tile comprises a base and a surface disposed on the base and comprising a plurality of spaced projections and interstitial spaces; and wherein the plurality of spaced projections and interstitial spaces provide a 3-dimensional surface.

A concrete marine habitat substrate tile that is portable for a human and which provides an increased calcium carbonate content and interstitial spaces for feeding and providing a habitat for developing oysters is described. Specifically provided is a reef restoration and oyster growing tile comprising: a concrete tile comprising at least 25% by weight calcium carbonate; wherein the concrete tile comprises a base and a surface disposed on the base and comprising a plurality of spaced projections and interstitial spaces; and wherein the plurality of spaced projections and interstitial spaces provide a 3-dimensional surface.

A briquette for use as a mineral charge in a cupola furnace for the production of mineral wool fibres is produced by combining: a) recycled waste mineral wool selected from i) waste mineral wool comprising uncured sugar containing binder, ii) waste mineral wool comprising cured binder, iii) waste mineral wool without binder and iv) combination thereof, b) cement, and c) additional sugar(s) to form a mouldable mixture and moulding and curing the mouldable mixture to form the briquette.

Multi-solid waste activated concretes with high-silicon iron ore tailings and preparation methods thereof are disclosed. In at least some embodiments, the concrete is prepared from raw materials including 360-380 kg/m.sup.3 of a cement, 30-40 kg/m.sup.3 of fly ash, 30-40 kg/m.sup.3 of a modified ultrafine sand of high-silicon iron ore tailings, 930-950 kg/m.sup.3 of a waste stone of tailings, 870-930 kg/m.sup.3 of a fine sand of tailings, 160-170 kg/m.sup.3 of water, and 4-8 kg/m.sup.3 of an additive.

A composition that controls and delays generation of foam in geopolymer pastes, mortars and concretes. Embodiments include a one-part anhydrous formula for the production of geopolymer foam that requires only the addition of water. The formula includes specific and variably designed admixtures that manage a time release delivery of alkali activation components, foaming agents, and blends thereof.

A briquette for use as a mineral charge in a cupola furnace for the production of mineral wool fibres is produced by combining: a) recycled waste mineral wool selected from i) waste mineral wool comprising uncured sugar containing binder, ii) waste mineral wool comprising cured binder, iii) waste mineral wool without binder and iv) combination thereof, b) cement, and c) additional sugar(s) to form a mouldable mixture and moulding and curing the mouldable mixture to form the briquette.

The present disclosure relates to an oyster settlement substrate technology, and particularly relates to a settlement substrate of Portland cement concrete and lightweight concrete for oyster and a preparation method thereof. According to the settlement substrate for inducing marine sessile organisms, an inducer is mixed to greatly improve the capability of rapid induction of settlement and metamorphosis of sessile organisms and promotion of long-term growth, and other properties of concrete are basically not affected; and the settlement substrate for inducing the marine sessile organisms can be used for construction of marine ecological engineering and corrosion prevention of marine concrete engineering.

The present application discloses various cementitious compositions that incorporate waste materials therein. In some embodiments, the waste materials incorporated in the compositions are mixed construction and demolition fines, including but not limited to small pieces of glass, wood, metal, drywall, cardboard, masonry, and other architectural material and waste materials. Various methods for using said compositions are also disclosed.

The present application discloses various cementitious compositions that incorporate waste materials therein. In some embodiments, the waste materials incorporated in the compositions are mixed construction and demolition fines, including but not limited to small pieces of glass, wood, metal, drywall, cardboard, masonry, and other architectural material and waste materials. Various methods for using said compositions are also disclosed.