Title:
Mechanical Properties of Concrete in Uniaxial Compression
Author(s):
Y. H. Lee and K. William
Publication:
Materials Journal
Volume:
94
Issue:
6
Appears on pages(s):
457-471
Keywords:
concretes; cylinders; deformation; loads (forces); specimens;
strength; tests;
DOI:
10.14359/329
Date:
11/1/1997
Abstract:
Pre- and post-peak response phenomena are examined when cylindrical concrete specimens are loaded under deformation control in uniaxial compression. The experiments focus on degradation of stiffness and strength during unloading and reloading cycles considering cylindrical specimens of different height. Fracture energy concepts are used to interpret the post-peak response as a function of specimen height in order to extract a characteristic length measure. In conclusion, the existence of a unique focal point (pole) is explored for the secant modulus description of elastic stiffness degradation and permanent (plastic) deformation.*