TY - JOUR
T1 - Investigating the flexural resistance of fiber reinforced cementitious composites under biaxial condition
AU - Kim, Jihwan
AU - Kim, Dong Joo
AU - Park, Seung Hun
AU - Zi, Goangseup
N1 - Funding Information:
We acknowledge the financial support of the New & Renewable Energy Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), funded by the Ministry of Trade, Industry and Energy, Republic of Korea (No. 20133010021770), and the project titled “Development of design basis and concrete technologies for offshore wind turbine support structures/20120093”, funded by the Ministry of Land, Transport and Maritime Affairs, Republic of Korea. This work is also partially supported by a Korea University Grant.
Publisher Copyright:
© 2014 Elsevier Ltd.
PY - 2015/4/1
Y1 - 2015/4/1
N2 - The flexural resistance of fiber reinforced cementitious composites (FRCCs) under biaxial condition was investigated by using two different types of biaxial bending test methods: the biaxial flexural test (BFT) and the centrally loaded round panel test (RPT). The flexural responses of FRCCs under biaxial condition were then compared with those of FRCCs under uniaxial condition; i.e. four-points bending test (4PBT). The test results, including the equivalent biaxial strength and normalized energy absorption capacity of the RPT, were found to be clearly higher than those of the BFT, and completely different cracking behavior was observed between the two biaxial test methods; the BFT generated numerous randomly distributed micro-cracks at the bottom of specimens, whereas the RPT mostly showed three major cracks, with minor radial cracks around them. In addition, the equivalent flexural tensile strength and normalized energy absorption capacity of the FRCCs under biaxial condition were found to be higher than those under uniaxial condition. The energy absorption capacity and the ratio of flexural tensile strength to the direct tensile strength of FRCCs are dependent on the stress state.
AB - The flexural resistance of fiber reinforced cementitious composites (FRCCs) under biaxial condition was investigated by using two different types of biaxial bending test methods: the biaxial flexural test (BFT) and the centrally loaded round panel test (RPT). The flexural responses of FRCCs under biaxial condition were then compared with those of FRCCs under uniaxial condition; i.e. four-points bending test (4PBT). The test results, including the equivalent biaxial strength and normalized energy absorption capacity of the RPT, were found to be clearly higher than those of the BFT, and completely different cracking behavior was observed between the two biaxial test methods; the BFT generated numerous randomly distributed micro-cracks at the bottom of specimens, whereas the RPT mostly showed three major cracks, with minor radial cracks around them. In addition, the equivalent flexural tensile strength and normalized energy absorption capacity of the FRCCs under biaxial condition were found to be higher than those under uniaxial condition. The energy absorption capacity and the ratio of flexural tensile strength to the direct tensile strength of FRCCs are dependent on the stress state.
KW - Bending behavior
KW - Biaxial flexural resistance
KW - Biaxial flexure test
KW - Biaxial stress condition
KW - Energy absorption capacity
KW - Fiber reinforced cementitious composites
UR - http://www.scopus.com/inward/record.url?scp=84919756212&partnerID=8YFLogxK
U2 - 10.1016/j.compstruct.2014.11.055
DO - 10.1016/j.compstruct.2014.11.055
M3 - Article
AN - SCOPUS:84919756212
SN - 0263-8223
VL - 122
SP - 198
EP - 208
JO - Composite Structures
JF - Composite Structures
ER -