| 摘要 |
FIELD: construction.SUBSTANCE: gypsum composition includes gypsum, dry oxidised starch, technical lignosulfonate, a foaming agent, water and pre-watered (from 15% to 40%) swollen perlite sand of fine fraction from 0.16 mm to 1.25 mm.EFFECT: increased resistance to temperature effect, namely increased time to damage of samples under high temperatures, which makes it possible to increase time for evacuation.4 cl, 2 tbl, 2 ex |
