Biaxial behavior of high-performance fiber-reinforced cementitious composite plates: Fid-Bau Portal

Biaxial behavior of high-performance fiber-reinforced cementitious composite plates

Foltz, Raymond R. / Lee, Deuck Hang / LaFave, James M.

Highlights•Structural behavior of HPFRCC materials under multi-axial loading was investigated.•Various mixture proportions, fiber types, and casting methods were considered.•Biaxial failure curves were constructed based on 127 plate specimen test results.•HPFRCCs can exhibit enhanced biaxial compression performance vs. plain concrete.•Modeling parameters were derived for nonlinear finite element analysis with HPFRCC.

AbstractA total of 127 plate specimens were fabricated and tested, of various mixture proportions, fiber types, and casting methods, in order to investigate the behavior of both plain concrete and high-performance fiber-reinforced cementitious composite (HPFRCC) specimens under multi-axial loading. The majority of the test specimens were initially fabricated as larger loaf specimens, to achieve proper fiber directionality in the out-of-plane direction, and then cut and trimmed, with steel brush platens used for loading to minimize friction between the testing machine and the plate specimens. The test results indicate that HPFRCC materials can exhibit enhanced biaxial compression performance, compared to plain concrete specimens, due to passive confinement provided by fibers in the out-of-plane direction. The multi-axial behavior of HPFRCC materials obtained from the tests was further used to construct biaxial failure curves, and several modeling parameters have then been derived for nonlinear finite element analysis of HPFRCC planar members subjected to biaxial stresses.