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Title: Actual Poisson Ratio of Concrete

Author(s): Sami A. Klink

Publication: Journal Proceedings

Volume: 82

Issue: 6

Appears on pages(s): 813-817

Keywords: compressive strength; concretes; deformation; density (mass/volume); lightweight concretes; Poisson ratio; strains; structural analysis; tests.

Date: 11/1/1985

Tests were carried out on specimens of several types of normal weight and lightweight concretes to determine for each type the Poisson ratio at the centers of the corresponding specimens. Internal strains were measured by means of embeddable strain gage units especially constructed for this investigation. The test results showed that this Poisson ratio, referred to as "actual" in this paper, is about 55 percent higher than that obtained by the recognized standard test method. The results also showed the existence of a definite relation between the actual Poisson ratio, density, and compressive strength of concrete. An empirical formula was derived for the actual Poisson ratio of concrete, which should prove useful for structural designers in estimating the deformations, displacements, and stresses in prestressed and ordinary reinforced concrete plates, shells, and other types of concrete structures.


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