Abstract
Upon carrying out the studies, the authors identified the features of strength and elastic modulus variation of different layers of vibration centrifuged fiber-concrete tubular columns. They provide rationalization for the variational nature of test structures, i.e. combinations of layers, the properties and characteristics of which are different. To reveal the trends of changes in the physical and mechanical properties of a structure by layers, the authors performed a through ultrasonic scanning using a Pulsar 2.2 device. The authors verified the applicability of the described technique for the variational vibration centrifuged structures. Three test cubes used for compression strength determination were produced from each the inner, middle, and outer layers. Confirming theoretical data on centrifugal molding, the authors revealed that the outer layer of the structure, which experienced the maximum centrifugal force, had the greatest strength, and the inner layer had the minimal strength. Substantiation of the fact that the variational vibration centrifuged structure is three-layered was confirmed experimentally.
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