Tests of Concrete Samples with Damping Additives on Dynamic Strength

Results of experiments on replacement of a part of the sand filler with an equivalent volume of damping additives with the purpose to study the changes in concrete properties caused under the action of dynamic loads are presented. Foam polystyrene, foam glass, crushed brick, and claydite are used as additives. Sample-cubes were subjected to the impact of different dynamic loads, after that their strength were measured and compared with results obtained for the control sample. The impact strength of samples of the compositions obtained was also tested at the vertical dynamic impact machine. On the basis of experimental studies, the possibility of increasing the impact strength of concrete due to introducing damping components in the composition of concrete mix is shown. At that, there was some reduction in other properties of concretes obtained. The optimum additive and its amount for application in concrete mixes subjected to dynamic loads have been determined.

M.V. KOROBKOVA, Engineer (This email address is being protected from spambots. You need JavaScript enabled to view it.)

Saint-Petersburg State University of Architecture and Civil Engineering (4, 2nd Krasnoarmeiskaya Street, St. Petersburg, 190005, Russian Federation)

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