Comparison of Methods of Testing the Modulus of Elasticity of Concrete According to Russian and Foreign Normative Documents

The main approaches to conducting short-term tests to determine the modulus of elasticity of concrete, which are regulated by GOST 24452–80, which is in force on the territory of the Russian Federation, as well as foreign standards ISO 1920-10:2010, ASTM C469-14, BS EN 12390-10, are analyzed. To determine the fundamental differences in testing to determine the modulus of elasticity of concrete according to Russian and foreign standards. The values of the modulus of elasticity one of the main parameters, obtained from the tests carried out in accordance with the specified standards, are laid down as initial data when performing spatial calculations and given in regulatory documents such as SP, ModelCode, EuroCod, etc., the analysis of which shows the difference in the values of the elastic moduli for the corresponding strength classes of concrete. Materials and methods: the article discusses the dimensions and shapes of the tested samples, the parameters of the measurement base and the type of measuring equipment, loading modes. The analysis of the main stages of testing to determine the modulus of elasticity of concrete given in the article revealed serious differences in the approaches of the Russian GOST 24452–80 and foreign standards (all foreign standards are relatively harmonized among themselves, although there are also differences). The main differences in the parameters of the samples and loading modes. For further harmonization of domestic and foreign regulatory documents, it is necessary to conduct extensive comparative tests of samples of different shapes and sizes with loading modes for each of the standards for each type of samples.

S.B. KRYLOV, Doctor of Sciences (Engineering),
P.D. ARLENINOV, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
P.S. KALMAKOVA, Engineer

Research, Design and Technological Institute of Concrete and Reinforced Concrete – NIIZhB named after A.A. Gvozdev, JSC “Research Center “Construction” (building 5, 6, 2nd Institutskaya Street, Moscow, 109428, Russian Federation)

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