A binder for building materials comprising cement and mineral grinding additives, said grinding additives containing ash of burned refuse. Relative to the binder, the ash of burned refuse has a weight percent of 0.005 to 0.4 and a Blaine specific surface area of 1500 cm.sup.2/g to 6000 cm.sup.2/g. Also, a process and to a plant for carrying out the process for production of a binder for building materials comprising cement and mineral grinding additives, the grinding additives containing ash of burned refuse, the process including: preparing the ash of burned refuse provided as grinding additive by separating out the fraction having a particle size less than 1 mm and the oversize particles having a particle size greater than 40 mm; pre-crushing the ash of burned refuse which has been freed from the undersize particles and the oversize particles; removing ferrous and non-ferrous metals; further crushing of the pre-crushed ash of burned refuse which has been substantially freed from metals, in order to achieve a Blaine specific surface area from 1500 cm.sup.2/g to 6000 cm.sup.2/g, adding the ash of burned refuse prepared in this way to the cement before and/or after the further crushing of the ash of burned refuse which has been pre-crushed and substantially freed from metals.

The use of a grinding additive during the dry grinding of steel making slag, characterized in that the grinding additive is selected from the group consisting of alkanolamines, glycols, glycerol, sugars, sugar acids, carboxylic acids or their salts, superplasticizers, superabsorbent polymers, or mixtures thereof. Also, ground steelmaking slag including the additives and the use of the ground steel making slag in construction materials.

A low-cost four-element system cementitious material, a preparation method and an application thereof are provided by the present disclosure, and the cementitious material is used in the fields of mine cementing filling and building materials. The four-element system cementitious material includes the following raw materials in percentage by mass: 20-60% of water-quenched blast furnace slag, 10-40% of waste incineration bottom ash, 20% of pretreated waste incineration fly ash and the balance of desulfurization gypsum. The low-cost four-element system cementitious material is used to replace cement to prepare mine cementing filling materials, and is also used to prepare concrete materials for construction industry.

Provided herein are methods and compositions utilizing one or more cementitious replacement materials, one or more alkaline activating materials, and, optionally one or more bonding materials and/or one or more setting time enhancer materials. The one or more cement precursors comprises one or more of non-radioactive nuclear waste; swarf, insoluble hydroxide of carbonate salts, radioactive wastes, petroleum coke, spent solvent wastes, electroporating and other metal finishing wastes, dioxin-bearing wastes, chlorinated aliphatic hydrocarbons production, wood preserving wastes, petroleum refinery wastewater treatment sludges, multisource leachate, organic chemicals manufacturing waste, pesticide manufacturing waste, petroleum refining waste, human pharmaceuticals manufacturing waste; veterinary pharmaceuticals manufacturing waste; inorganic pigment manufacturing waste; inorganic chemicals manufacturing waste; explosives manufacturing waste; iron and/or steel production waste; primary aluminum production waste; secondary lead processing waste; ink formulation waste; coking waste; or a combination thereof. The one or more alkaline activating agents comprises potassium silicate, potassium hydroxide, sodium hydroxide, sodium silicate, calcium hydroxide, magnesium hydroxide, reactive magnesium oxide, calcium chloride, sodium carbonate, silicone dioxide, sodium aluminate, calcium sulfate, sodium sulfate, or dolomite, or a combination thereof. The system comprises a vertical impact mill.

The invention provides methods and 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.

A binder composition in dry weight percentage comprising a) between 1% and 30% of Portland cement, lime or a mixture thereof, b) between 1% and 40% of ground granulated blast furnace slag, c) between 20% and 50% of at least one pozzolanic material, d) between 20% and 65% of at least one filler, e) between 0.5% and 10%, relative to the total weight of components a, b, c, and d, of at least one activator, f) between 0.05% and 1.5%, relative to the total weight of components a, b, c and d, of at least one water reducer polymer, the filler being a mixture between 10% and 90% in weight of particles having a d.sub.50?0.05 ?m and <8 ?m, and between 10% and 90% in weight of particles having a d.sub.50?8 ?m and <200 ?m, the filler mixture weight percentages in respect to total weight of the filler.

A building product is made from granular material and a binder that includes steel slag. A process for making the building product includes combining the granular material and the binder and then curing the combined granular material and binder with carbon dioxide. A building material includes a mixture of steel slag and a silica-rich material. The steel slag and silica-rich material is treated by heating. The silica-rich material may be waste glass and/or fly ash. A process for making the building material includes mixing the steel slag and silica-rich material and further heating the mixture.

A building product is made from granular material and a binder that includes steel slag. A process for making the building product includes combining the granular material and the binder and then curing the combined granular material and binder with carbon dioxide. A building material includes a mixture of steel slag and a silica-rich material. The steel slag and silica-rich material is treated by heating. The silica-rich material may be waste glass and/or fly ash. A process for making the building material includes mixing the steel slag and silica-rich material and further heating the mixture.

The present invention relates to a curable binder composition comprising: a) at least one organic binder comprising a polyisocyanate and a polyol, and b) at least 50% by weight of a filler in the form of quartz and/or slag, based on 100% by weight of binder composition.

Accelerators and binders including steelmaking slag and their use in construction materials, wherein the accelerators for the reaction of steelmaking slag with water are being selected from the group consisting of alkanolamines, reducing agents, sugars, sugar acids, carboxylic acids or their salts, amino acids or their salts, sulfamic acid, glyoxal, acetylacetone, pyrocatechol, nitrilotri(methylphosphonic acid), etidronic acid, mineral salts, or mixtures thereof.