TY JOUR TI The effect of flax fiber additives on the strength of gypsum-based construction composites KW gypsum KW linen fibre KW freeness KW construction composites KW reinforcing additive KW bending strength KW compressive strength JO Smart composite in construction AU Razgovorov, P.B. AU Dobrokhotov, V.B. AU Kozhukhov, V.A. AU Bakanov, M.O. AU Davydov, I.N. PY 2026 IS 7 PB Yaroslavl State Technical University