A preparation method of a supplementary cementitious material based on electrostatic adsorption for high-efficiency CO.sub.2 sequestration is provided. The preparation method of the present disclosure includes the following steps: placing ultrafine carbide slag powder into an electrostatic field to make the ultrafine carbide slag powder have electrostatic charge, and obtaining ultrafine carbide slag powder with electrostatic charge; and uniformly mixing low-calcium fly ash and the ultrafine calcium carbide slag powder with electrostatic charge, followed by adding into a rotary packed bed; continuously introducing industrial waste gas containing CO.sub.2 and water vapor into the rotary packed bed; after a reaction, collecting a material and drying to obtain the supplementary cementitious material based on electrostatic adsorption for high-efficiency CO.sub.2 sequestration.

A preparation method of a supplementary cementitious material based on electrostatic adsorption for high-efficiency CO.sub.2 sequestration is provided. The preparation method of the present disclosure includes the following steps: placing ultrafine carbide slag powder into an electrostatic field to make the ultrafine carbide slag powder have electrostatic charge, and obtaining ultrafine carbide slag powder with electrostatic charge; and uniformly mixing low-calcium fly ash and the ultrafine calcium carbide slag powder with electrostatic charge, followed by adding into a rotary packed bed; continuously introducing industrial waste gas containing CO.sub.2 and water vapor into the rotary packed bed; after a reaction, collecting a material and drying to obtain the supplementary cementitious material based on electrostatic adsorption for high-efficiency CO.sub.2 sequestration.

Disclosed are dry methods of making a composite concrete material using a water-free precursor composition. Also disclosed herein are composite concrete materials.

Geopolymer compositions incorporating slag or other alumino-silicate and calcium containing binder components are described. The geopolymer compositions incorporate C-(N)-A-S-H/C-A-S-H gels providing improved adhesion strength and resistance to chemical attack. Methods of methods of making and using the geopolymers are further described, with the embodied geopolymers being compatible with multiple conventional application processes, including pouring, spraying, screeding, and troweling.

Method for manufacturing a concrete from activated slag, comprising at least the steps consisting of: a) arranging a premixture P of water and granulates, the temperature of the premixture P being at least equal to 10 C., b) arranging an activation system A comprising at least a co-binder, a chelating agent, an alkali metal carbonate and a carbonated material different from the alkali metal carbonate, c) incorporating the activation system A and a slag S by mixing them into the premixture P, the activation system A and slag S being introduced successively and/or simultaneously, d) continuing the mixing until a fresh concrete is obtained, and e) allowing the fresh concrete to cure.

A method for producing supplementary cementitious material. The method comprises contacting a mineral stream with an acid to form an activated mineral stream; reducing the moisture content of the mineral stream; and comminuting the mineral stream to form a supplementary cementitious material. A method of extracting a metal from a mineral stream. The method comprises contacting a mineral stream with an acid to form an activated mineral stream; filtering the activated mineral stream to extract leach liquor comprising the metal; and neutralizing the acid.

A method for producing supplementary cementitious material. The method comprises contacting a mineral stream with an acid to form an activated mineral stream; reducing the moisture content of the mineral stream; and comminuting the mineral stream to form a supplementary cementitious material. A method of extracting a metal from a mineral stream. The method comprises contacting a mineral stream with an acid to form an activated mineral stream; filtering the activated mineral stream to extract leach liquor comprising the metal; and neutralizing the acid.

The present invention relates to a layered formed sheet comprising two or more formed sheets each formed from a curable composition comprising (A) an aluminosilicate source, (B) an alkaline metal hydroxide, (C) cellulose-based fibers and (D) alkali-resistant fibers other than cellulose-based fibers, in which the aluminosilicate source (A) comprises a blast furnace slag, and the content of a blast furnace slag having a specific surface area of 1000 cm.sup.2/g or more and 9000 cm.sup.2/g or less is more than 55% by mass and 90% by mass or less related to a total solid content in the curable composition.

The present invention relates to a layered formed sheet comprising two or more formed sheets each formed from a curable composition comprising (A) an aluminosilicate source, (B) an alkaline metal hydroxide, (C) cellulose-based fibers and (D) alkali-resistant fibers other than cellulose-based fibers, in which the aluminosilicate source (A) comprises a blast furnace slag, and the content of a blast furnace slag having a specific surface area of 1000 cm.sup.2/g or more and 9000 cm.sup.2/g or less is more than 55% by mass and 90% by mass or less related to a total solid content in the curable composition.

In one embodiment, a building material derived from a geopolymer formulation comprises sand, ground granulated blast furnace slag (GGBFS), fly ash, sodium tetraborate, boric acid, zeolite, sodium caseinate, and SC-9. Optionally, the formulation also comprises additional constituents like sodium metasilicate, sodium hydroxide, magnesium oxide, hemp, basalt fibers, aggregates, and fillers. The building materials have high compressive strength, flexural strength, tensile strength, impact resistance, and thermal resistance.