TY JOUR TI UV activation building sand with the dehydration factor KW ultraviolet irradiation KW particle surface KW concrete mix KW concrete strength JO Construction and Architecture AU Pavlov, A.N. AU Gol'tsov, Y.I. AU Mailyan, L.R. AU Stel'makh, S.A. AU Shcherban', E.M. AU El'shaeva, D.M. PY 2021 IS 8 PB Publishing Center RIOR