RU2748328 (C1)

Method for preparing Portland cement binder with addition
of high-calcium ash from thermal power plants

(22) 14.09.2020

(43) 24.05.2021

(57) Field: building materials. Substance: invention relates to the field of building materials and can be used in the production of various concrete and mortar mixtures. A method for preparing a Portland cement binder with the addition of high-calcium ash from thermal power plants includes joint grinding of Portland cement clinker, gypsum stone, granular blast-furnace slag, adding high-calcium ash to the binder at the time of preparation of a concrete or mortar mixture, before adding high-calcium ash, the content of free lime in it is preliminarily determined, after which ash to binder in the following ratio, wt.% of the weight of cement: the content of free lime in high-calcium ash is equal to or less than 11%, but more than 7% to 20, or the content of free lime in high-calcium ash is equal or less than 7%, but more than 5% up to 30, or the content of free lime in high-calcium ash is equal to or less than 5% up to 40. Effect: invention is aimed at reducing the consumption of cement, reducing the cost of Portland cement binder, simplifying the technology for the manufacture of cement and concrete mixtures while maintaining strength and deformability of concrete.

(71) Ovcharenko Gennadij Ivanovich (RU)


Related articles:

Issue 2023-5 WO 2023/072983 A1

Binder and mortar compositions

(22) 26.10.2022 (43) 04.05.2023 (57) The present invention relates to a pulverulent binder for a mortar comprising: a) glass particles, b) at least one slag, and c) an activation system comprising at...

Issue 2014-12

Innovative binder based on activated fly ash for products with chemical and corrosive load

1 Conventional systems By using cement in a binder system for dry mortars or concrete the hydration of the different clinker phases provides the strength and the resistance of the matrix. To improve...

Issue 2021-8 WO 2021/180594 A1

Slag-based hydraulic binder, dry mortar composition comprising same and system for activating a slag-based binder

(22) 05.03.2021 (43) 16.09.2021 (57) The aim of the invention is to provide a hydraulic binder based on ground granulated blast-furnace slag, devoid of Portland cement, which enables improved setting...


Raw materials for calcium sulfate flowing screeds

One outstanding property of calcium sulfate flowing screeds is that large floor screed areas can be laid with virtually no joints in a free-flow consistency that can be placed easily and by machine....

Issue 2022-8 WO 2022/207036 A1

Binder for building materials, method for production thereof and plant for carrying out this method

(22) 28.03.2022 (43) 06.10.2022 (57) The invention relates to a binder for building materials consisting of cement and mineral grinding additives, said grinding additives containing ash of burned...