G - Physics – 01 – N
Patent
G - Physics
01
N
73/81
G01N 33/38 (2006.01) G01N 3/24 (2006.01) G01N 1/28 (2006.01) G01N 3/00 (2006.01) G01N 33/00 (2006.01)
Patent
CA 1268054
ABSTRACT OF THE DISCLOSURE A method and apparatus are disclosed for measuring the compactibility of a fresh concrete mass or the purpose of obtaining information as to the applicability of the mass with respect to the strength properties of the cast product. A sample having a determined weight (m) is taken from the mass and compressed in two opposite directions with a constant force (P) and planes which extend in parallel with each other and alter their positions through rotation. The volume (V, Vt) of the sample is determined at the beginning of the compaction and after a predetermined compaction work, after which the volume change of the sample is compared with experimentally defined limit values. The apparatus comprises a compacting device for subjecting the sample in a container to a shearing compaction, and means for maintaining the sample under compression during the compaction.
505265
G. Ronald Bell & Associates
Paakkinen Ilmari
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