Technical properties of the tile made of technogenic raw with pyrite drosses

It is shown that the introduction of up to 15% pyrite cinders into ceramic masses significantly improves the frost resistance of tiles, while water absorption decreases disproportionately to frost resistance. A significant increase in frost resistance is facilitated by a uniform distribution of pores with a size of 10 ^-6 -10 ^-7 m. 4, ill. 2, bibliography: 8 titles.