TY JOUR TI Analysis of hydraulic concrete strength test methods KW concrete KW concrete strength testing KW concrete testing methods KW compression KW stretching KW compression load JO Vestnik of Astrakhan State Technical University. Series: Marine engineering and technologies AU Pichugin, D.. AU Surikova, A.A. AU Surikov, V.. PY 2022 IS PB Astrakhan State Technical University