TY - JOUR
T1 - Feasibility of reducing the fiber content in ultra-high-performance fiber-reinforced concrete under flexure
AU - Park, Jung Jun
AU - Yoo, Doo Yeol
AU - Park, Gi Joon
AU - Kim, Sung Wook
N1 - Publisher Copyright:
© 2017 by the authors.
PY - 2017
Y1 - 2017
N2 - In this study, the flexural behavior of ultra-high-performance fiber-reinforced concrete (UHPFRC) is examined as a function of fiber length and volume fraction. Straight steel fiber with three different lengths (lf) of 13, 19.5, and 30 mm and four different volume fractions (vf) of 0.5%, 1.0%, 1.5%, and 2.0% are considered. Test results show that post-cracking flexural properties of UHPFRC, such as flexural strength, deflection capacity, toughness, and cracking behavior, improve with increasing fiber length and volume fraction, while first-cracking properties are not significantly influenced by fiber length and volume fraction. A 0.5 vol % reduction of steel fiber content relative to commercial UHPFRC can be achieved without deterioration of flexural performance by replacing short fibers (lf of 13 mm) with longer fibers (lf of 19.5 mm and 30 mm).
AB - In this study, the flexural behavior of ultra-high-performance fiber-reinforced concrete (UHPFRC) is examined as a function of fiber length and volume fraction. Straight steel fiber with three different lengths (lf) of 13, 19.5, and 30 mm and four different volume fractions (vf) of 0.5%, 1.0%, 1.5%, and 2.0% are considered. Test results show that post-cracking flexural properties of UHPFRC, such as flexural strength, deflection capacity, toughness, and cracking behavior, improve with increasing fiber length and volume fraction, while first-cracking properties are not significantly influenced by fiber length and volume fraction. A 0.5 vol % reduction of steel fiber content relative to commercial UHPFRC can be achieved without deterioration of flexural performance by replacing short fibers (lf of 13 mm) with longer fibers (lf of 19.5 mm and 30 mm).
UR - http://www.scopus.com/inward/record.url?scp=85013840494&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85013840494&partnerID=8YFLogxK
U2 - 10.3390/ma10020118
DO - 10.3390/ma10020118
M3 - Article
AN - SCOPUS:85013840494
SN - 1996-1944
VL - 10
JO - Materials
JF - Materials
IS - 2
M1 - 118
ER -