TY JOUR TI PREDICTION OF THE CREEP COEFFICIENT OF MODIFIED GLASS-COMPOSITE PIPES KW glass-composite pipes KW creep KW creep coefficient KW ring stiffness KW service life KW A.A. Askadsky molecular-kinetic theory KW relaxation kernel KW GOST R 55077-2012 JO Technique and technology of silicates AU Shashkin, S.V. AU Matseevich, T.A. PY 2026 IS 33 PB Individual Entrepreneur Svetlana Vasilievna Samchenko