Experimental Investigation on the Effect of Specimen Size in Determining Fracture Parameters of Concrete
Abstract: This paper presents
the experimental results in investigating the effect of specimen size (ratio of
beam width to aggregate size) on the value of stress intensity factor (KIC) and
fracture energy (GF) using three-point bend (TPB). A test method recommended by
RILEM was chosen to measure the KIC and the GF as fracture parameters. Three
different specimen sizes of concrete beam with water/binder ratio of 0.2 and
0.30 were engaged in the experiments. Both qualitative and quantitative
analyses based on the normalized stress against deflection curve, and the KIC
and the GF were employed. Statistical analysis was carried out based on coefficient
of variation of the measured value of fracture parameters in order to
investigate the variability of corresponding results. It was found that
specimen size have a relatively insensitive influence on the value of KIC,
however, have a significant effect on the value of GF.
Author: Atur P. N. Siregar, M.
I. Rafiq, M. Mulheron
Journal Code: jptsipilgg160070
