Title:
Mechanical Behavior of Steel Fiber-Cement Mortar in Tension and Flexure Interpreted by Means of Statistics
Author(s):
K. Boudewijn Lub and Ton Padmoes
Publication:
Materials Journal
Volume:
86
Issue:
1
Appears on pages(s):
16-28
Keywords:
box beams; cracking (fracturing); crack width and spacing; flexural tests; metal fibers; mortars (material); statistical analysis; tension tests; Materials Research
DOI:
10.14359/1812
Date:
1/1/1989
Abstract:
The behavior of thin-walled steel fiber-cement mortar in uniaxial tension is related to its behavior in pure flexure by means of statistics. The stress-crack width diagram of uniaxial tension can, by means of regression analysis, be approximated by a straight line, as well as for the average upper and lower limits. With these data, a lower limit moment-rotation (Mí) diagram, which is in good agreement with the test data, is analyzed in pure flexure for nine box beams. The load-deflection diagrams are converted to moment-rotation diagrams. To detect the influence of the fiber alignment, two types of box beams differing only in the alignment of the fibers in the bottom flange were made. Although the test results of the two types differ considerably, hypotheses testing showed that the difference in the behavior of the two types was not significant.