Sharif University of Technology
Scientia Iranica
1026-3098
15
1
2008
02
01
Interpretation of Tensile Softening in Concrete, Using Fractal Geometry
2974
EN
H.
Khezrzadeh
Department of Civil Engineering,Sharif University of Technology
M.
Mofid
Department of Civil Engineering,Sharif University of Technology
Journal Article
2009
05
30
Concrete is a heterogeneous material with a wide variety of usage in structural design. Concrete
under tension exhibits strain softening, i.e., a negative slope in the stress{deformation diagrams.
Dierent softening curves have been proposed in the literature to interpret this phenomenon.
In current research, a new softening curve for concrete has been proposed by using the newly
introduced concept of fractal geometry. This new softening curve is denominated a 'Quasi-fractal'
softening curve and consists of two parts, a linear portion at the beginning and an exponential
portion in the rest of the curve. A comparison of a \Quasi-fractal" softening curve with a set of
proposed experimental softening curves has been performed, which reveals good agreement.
http://scientiairanica.sharif.edu/article_2974_01aff1279f00c1840e0fac2406d37852.pdf