TY JOUR TI THE GROUTH OF STRENGTH THE MATRIX OF FOAM CONCRETE WITH SURFACE ACTIVE MATTER KW non-autoclaved aerated concrete KW durability of foam concrete KW foam concrete matrix KW surface active substances JO Scientific Papers Collection of the Angarsk State Technical University AU Savenkov, A.I. AU Gorbach, P.S. PY 2019 IS 2019 PB Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University»