Microcracking Effect on Flexural Strength of Concrete After Repeated Loading

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Title: Microcracking Effect on Flexural Strength of Concrete After Repeated Loading

Author(s): Akira Yoshimotot, Shoji Ogino, and Masashi Kawakami

Publication: Journal Proceedings

Volume: 69

Issue: 4

Appears on pages(s): 233-240

Keywords: bond (paste to aggregate);cement pastes;concretes;crack propagation;cyclic loads;fatigue (materials);flexural strength;fracture mechanics;Griffith crack; microcracking;microscopy;microstructure;research.

Date: 4/1/1972

Abstract:
The purpose of this investigation was to study the flexural strength of concrete beam specimens after repeated loading. The test results showed that some specimens produced an increase in flexural strength after repeated loading. An attempt is made to explain this strength increase. It appears likely that microcracking propagation is responsible for this increase in flexural strength.