FIELD: instrumentation.
SUBSTANCE: invention relates to laboratory analysis of construction material characteristics, namely to determination of stress energy and linear expansion of the concrete prepared based on the expanded cement. Said device includes measuring device with movable element on post, support for sample, cylindrical shape for concrete sample, installed on the support, metal plate with low coefficient of stiffness and post. At that as the measuring device the strain sensor located on the metal plate is used, the driven rod is used as the movable element, at one side it is connected with the strain sensor, and from the another side has piston to limit the initial dimensions of the sample.
EFFECT: said device ensures possibility of determination of the linear expansion of samples with high accuracy and fixation of the stage of samples jamming.
1 dwg
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