Title:
Evaluation of Aggregate Properties on Tension Softening Behavior of High-Strength Concrete
Author(s):
Y. Sitsutaka, K. Kamimura, and S. Nakamura
Publication:
Symposium Paper
Volume:
149
Issue:
Appears on pages(s):
711-728
Keywords:
aggregates; cracking (fracturing); fracture mechanics; high-strength concretes; mix proportioning; models; tension; Structural Research
DOI:
10.14359/4182
Date:
10/1/1994
Abstract:
The influence of aggregate properties on the tension-softening behavior of high-strength concrete was studied. A new method to determine the tension-softening curve of concrete is proposed, based on the polylinear approximation analysis. The prediction method for the load-displacement relationships of concrete with cracks is developed by means of the fictitious crack model concept with the K-superposition method and constitutive law with the polylinear tension-softening curve. In this method, nonlinear crack equations were solved by the iteration program for evaluating softening inclinations. The polylinear approximation method for calculating the complete tension-softening curve from the actual load-displacement curve was established by using nonlinear crack equation analysis. Tension-softening curves of concrete with various aggregates and matrix strengths were measured, and their characteristics were discussed.