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Main purpose of the present research is creating a new rapid method for the determination of frost resistance of concrete that is characterized by small labor input, high efficiency and a wide scope. During this research, the theoretical analysis of the dependence of frost resistance of a sample of concrete and the energy, which is emitted by a sample at destruction, was carried out. The offered method includes measurement of residual deformation of a sample after one cycle of freezing-defrosting, measurement of long strength and measurement of short-term strength. Based on the experimental data, calculation of the energy emitted by a sample after one cycle of freezing-defrosting, and the emitted energy necessary for relative decreasing in strength of a sample by 15% is carried out. Frost resistance of a sample is expressed as a mathematical relation of these energies, and the frost resistance of concrete is calculated as arithmetic mean on samples. The offered method does not demand long tests, it has high efficiency and wide scope, but special laboratory equipment is necessary.

Possible rapid method for the determination of concrete frost resistance