TY - JOUR
T1 - Mechanical properties of ultra-high-performance concrete enhanced with graphite nanoplatelets and carbon nanofibers
AU - Meng, Weina
AU - Khayat, Kamal H.
N1 - Publisher Copyright:
© 2016 Elsevier Ltd
PY - 2016/12/15
Y1 - 2016/12/15
N2 - Effects of graphite nanoplatelets (GNPs) and carbon nanofibers (CNFs) on mechanical properties of ultra-high-performance concrete (UHPC) are investigated. A non-proprietary UHPC mixture composed of 0.5% steel micro fibers, 5% silica fume, and 40% fly ash was used. The content of the nanomaterials ranged from 0 to 0.3% by weight of cementitious materials. The nanomaterials were dispersed using optimized surfactant content and ultra-sonification to ensure uniform dispersion in the UHPC mixture. As the content of nanomaterials is increased from 0 to 0.3%, the tensile strength and energy absorption capacity can be increased by 56% and 187%, respectively; the flexural strength and toughness can be increased by 59% and 276%, respectively. At 0.2% of GNPs, the UHPCs exhibited “strain-hardening” in tension and in flexure.
AB - Effects of graphite nanoplatelets (GNPs) and carbon nanofibers (CNFs) on mechanical properties of ultra-high-performance concrete (UHPC) are investigated. A non-proprietary UHPC mixture composed of 0.5% steel micro fibers, 5% silica fume, and 40% fly ash was used. The content of the nanomaterials ranged from 0 to 0.3% by weight of cementitious materials. The nanomaterials were dispersed using optimized surfactant content and ultra-sonification to ensure uniform dispersion in the UHPC mixture. As the content of nanomaterials is increased from 0 to 0.3%, the tensile strength and energy absorption capacity can be increased by 56% and 187%, respectively; the flexural strength and toughness can be increased by 59% and 276%, respectively. At 0.2% of GNPs, the UHPCs exhibited “strain-hardening” in tension and in flexure.
KW - Carbon nanofiber
KW - Graphite nanoplatelet
KW - Mechanical properties
KW - Ultra-high-performance concrete
UR - http://www.scopus.com/inward/record.url?scp=84988967729&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84988967729&partnerID=8YFLogxK
U2 - 10.1016/j.compositesb.2016.09.069
DO - 10.1016/j.compositesb.2016.09.069
M3 - Article
AN - SCOPUS:84988967729
SN - 1359-8368
VL - 107
SP - 113
EP - 122
JO - Composites Part B: Engineering
JF - Composites Part B: Engineering
ER -