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The article presents the results of measurements of the strength of concrete foundations, pumping units, operated in the ground with partial impregnation with oil, in conditions of high vibration exposure for more than 30 years. The research was carried out during the examination of designs of the bases pumping units located in the main oil pumping stations. The analysis of the fundamental articles in the studied direction from the experience of examination of such objects. On the basis of visual inspection when measuring concrete strength the presence of the impregnation of concrete with oil. In the majority of cases examined impregnation of designs of the bases of the oil occurred through the soil. Considered the strength of concrete as the aerial parts of the foundations (with the opening facing) and the underground part of the Foundation (with the pits to the soles).Given the use of two methods for the determination of concrete strength: the separation of chipping and shock-pulse method. In this study the measurement of concrete strength at 20 the foundations of the pumping units by the method of "separation with shear fracture" – no less than 5 of the test object and the shock-pulse method – at least 20 trials per object. Shows the dependencies of the measurement results and the other method depending on the impregnation of concrete with oil. The analysis of factors affecting the strength of concrete when saturated with oil. A comparison of the conclusions of the study with data from other studies shows the presence of different results, which demonstrates the relevance of the complex work including the testing of various types of concrete, taking into account temperature regimes, the type of impregnating oil, vibration exposure, the concentration of oil products, the time of exposure to petroleum products on concrete, massive structures and methods for determining concrete strength.

THE STRENGTH OF CONCRETE FOUNDATIONS, PUMPING UNITS IN THE IMPREGNATION OF THEIR OILS AND OIL