The present invention comprises a product. The product comprises a first mineral in particulate form and having a first pozzolanic reactivity and a second mineral in particulate form and having a second pozzolanic reactivity greater than the first reactivity, wherein the surface of at least some of the particles of the first mineral is at least partially covered with particles of the second mineral. A method of making the composition of the present invention is also disclosed.

The present invention comprises a product. The product comprises a first mineral in particulate form and having a first pozzolanic reactivity and a second mineral in particulate form and having a second pozzolanic reactivity greater than the first reactivity, wherein the surface of at least some of the particles of the first mineral is at least partially covered with particles of the second mineral. A method of making the composition of the present invention is also disclosed.

A composition configured to be mixed with cement, and associated systems and methods are disclosed herein. In some embodiments, the composition includes at least 10% by weight lime particles, and at least 35% by weight pozzolan particles. Properties of the composition can include a magnesium oxide concentration of at least 0.5%, and an iron oxide concentration of at least 0.5-2.0%, an aluminum oxide concentration of 2-8%, a silicon dioxide concentration of 20-40%, a potassium oxide concentration of 20,000-30,000 ppm, and a sodium oxide concentration of 10,000-20,000 ppm. In some embodiments, the lime-based cement extender composition, or product, is combined with cement to produce a cement blend for use in the mining industry as mine backfill.

A cement clinker composition incorporates calcium fluoride and iron oxide to reduce firing temperatures and increase strength. High fly ash, aluminum dross, aluminum scrap, high aluminum clays and combinations thereof may also be substituted for bauxite in the cement clinker composition

A method for preparing a carbonated mineral for use in cement is provided; wherein a mineral component with a (CaO+MgO)/SiO.sub.2 weight ratio of 1.2 to 5.0 is ground to a powder; mixed with water to form a paste; the paste is placed in a reactor in an atmosphere containing CO.sub.2; the paste is carbonated in the reactor; and the resulting material is dried to constant weight; or the mineral component is ground to a Blaine fineness between 3000 cm2/g and 10000 cm2/g to obtain a powder; during grinding a CO2 rich gas is injected so that the component carbonates; the powder is mixed with water at a weight ratio between 0.3 and 1.5 to obtain a paste, or pre-humidified by adding water at a weight ratio between 0.03 and 0.2; the resulting material is dried to constant weight at 60-85 C.; and the resulting material is deagglomerated and sieved.

A method for manufacturing supplementary cementitious material includes the steps of: providing a starting material containing clay and fly ash or a mixture of fly ash and bottom ash, wherein at least 70 wt.-% of the starting material are clay, fly ash and bottom ash, homogenization of the starting material, thermal treatment of the starting material at a temperature from 700 to 1000 C. to provide a heat treated material, cooling the heat treated material to provide a cooled product, and grinding the cooled product to provide the supplementary cementitious material, and use of the supplementary cementitious material obtainable through the method for manufacturing hydraulic building materials, as well as supplementary cementitious material obtained.

A composition configured to be mixed with cement, and associated systems and methods are disclosed herein. In some embodiments, the composition includes at least 10% by weight lime particles, and at least 35% by weight pozzolan particles. Properties of the composition can include a magnesium oxide concentration of at least 0.5%, and an iron oxide concentration of at least 0.5-2.0%, an aluminum oxide concentration of 2-8%, a silicon dioxide concentration of 20-40%, a potassium oxide concentration of 20,000-30,000 ppm, and a sodium oxide concentration of 10,000-20,000 ppm. In some embodiments, the lime-based cement extender composition, or product, is combined with cement to produce a cement blend for use in the mining industry as mine backfill.

Disclosed are a hydraulic binder composition containing at least 50% by weight of ground granulated blast furnace slag and a system for activating the slag, the system containing at least calcium sulphate, at least one product chosen from a source of Portland clinker and lime, at least one aluminum derivative and at least one alkali metal or alkaline earth metal salt; containing a ready-to-mix building material composition comprising such a hydraulic binder and aggregates of inert material capable of being agglomerated in the presence of an aqueous phase; and a process for employing the ready-to-mix composition containing a stage of mixing the said composition with water for the purpose of the preparation of a building material, such as a concrete or mortar, and in particular an adhesive mortar, pointing mortar or levelling mortar or coating.

In order to address the technical problem of allowing an unshaped refractory material using a spinel-containing alumina cement to provide further improved corrosion resistance and slag infiltration resistance while reducing the occurrence of crack/peeling, an unshaped refractory material is provided which comprises a refractory raw material mixture having a particle size of 8 mm or less, with the refractory raw material mixture having an alumina cement at least a part of which is a spinel-containing alumina cement, and, with respect to 100 mass % of the refractory raw material mixture, the alumina cement contains CaO in an amount of 0.5 to 2.5 mass %, and the spinel-containing alumina cement contains spinel in an amount of 3.5 to 10.5 mass %.

A mineral binder system that includes a mineral binder B1 of calcium aluminates having a ratio C/A of calcium oxide C to aluminum oxide A of 0.7 to 1.1, a mineral binder B2 of calcium aluminates having a ratio C/A of calcium oxide C to aluminum oxide A of 1.2 to 2.7, and at least one sulfate carrier is provided. Also provided are a dry mortar which includes this mineral binder system, a wet mortar based on the disclosed dry mortar, and the use of the dry mortar as tile adhesive mortar, levelling compound, waterproofing slurry, grout mortar, screed binder, screed mortar, repair adhesive, and/or damp proof membrane.