FIRE-RESISTANT MASONRY ADMIXTURE Russian patent published in 2012 - IPC C04B28/08 C04B28/26 C04B111/28 

FIELD: construction.

SUBSTANCE: fire-resistant masonry admixture containing cambrian clay, granulated blast-furnace slag, silicate slab, crocks, water, additionally contains fire-resistant clay, sand and limestone, specified solid components are exposed to grinding until the 0.08 sieve remainder is not more than 1 %, at the following ratio of components, wt %: silicate slab 1.0-1.5, granulated blast-furnace slag 36.0-38.0, cambrian clay 15.8-16.2, fire-resistant clay 7.8-8.2, crocks 1.9-2.1, sand 7.8-8.2, limestone 5.8-6.2, water - balance.

EFFECT: higher refractory property and reduced hardening time.

1 ex, 3 tbl