CLAY-PHOSPHATE MATERIAL Russian patent published in 2004 - IPC

FIELD: building materials.

SUBSTANCE: invention can be used in strengthening grounds. Invention provides delaying time for seizing for hardening materials due to sorption processes in petroleum products influencing on the formation of final phosphate compounds in retaining water resistance property. Clay-phosphate material including loam, iron-containing waste from metallurgic manufacture with residue 5-7% on sieve № 008 containing ferric oxide Fe (III) and ortho-phosphoric acid of density 1.24-1.25 g/cm³ comprises additionally loam containing petroleum products in the amount 5-7% and indicated iron-containing waste of the following composition, wt.-%: Fe₂O₃, 96; CuO, 0.1; Al₂O₃, 0.4; Mo₃O₄, 0.1; NiO, 0.2; SiO₂, 2.0; Cr₂O₃, 0.3; carbon, 0.3 in the following ratio of components, wt.-%: indicated loam, 71-74; indicated iron-containing waste, 8-11; indicated ortho-phosphoric acid, the balance.

EFFECT: valuable properties of material.

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