FLOORING SLAB PRODUCTION METHOD Russian patent published in 2005 - IPC

FIELD: building, particularly roof coverings of composite prefabricated slabs.

SUBSTANCE: method involves successive producing concrete, vented and water-proof layers and rolling on water-proof layer. On the first stage of flooring slab production concrete and vented layers are produced simultaneously from concrete mix separated into layers and including cement, water, superplasticizing admix, keramzit sand and keramzit filler taken in the following mass ratio: 76.37:48.53:1.00:114.53:285.89. On the second stage water-proof layer is made of organomineral mix including bitumen and limestone powder taken in mass ratio of 1.5:1. For lower and central vented layer production keramzit sand having 0.315 mm size and claydite granules having 10-40 mm size are taken. Limestone powder used for water-proof layer forming has size of not more than 0.14 mm.

EFFECT: increased strength, service life and labor productivity for slab production.

1 cl, 1 ex, 1 tbl