CLINKER-FREE BINDER Russian patent published in 2015 - IPC C04B7/34 

FIELD: construction.

SUBSTANCE: invention relates to construction materials, particularly, to binders and can be used for production of dry construction mixes, mortars and concretes as well as other construction materials. This binder comprises the following components: annealed at 800-900°C mix of magnesium-bearing carbonates and clays, magnesium sulphate and mineral additive, i.e. zeolite-bearing carbonate-silicic rock, plasticising agent SP-1 and gardening promoter, i.e. sodium sulphate, at the following ratio of said components, wt %: said mix - 58-85, magnesium sulphate - 3-6, zeolite-bearing carbonate-silicic rock - 10-30, plasticising agent SP-1 - 1-2, sodium sulphate - 1-4. Note here that magnesium-bearing carbonate rock-to-clay ratio makes (2.7-10):1.

EFFECT: higher strength under normal conditions.

2 cl, 2 tbl