TY - JOUR
T1 - Flexural fracture response of a novel iron carbonate matrix - Glass fiber composite and its comparison to Portland cement-based composites
AU - Das, Sumanta
AU - Hendrix, Alyson
AU - Stone, David
AU - Neithalath, Narayanan
N1 - Funding Information:
The authors sincerely acknowledge the support from National Science Foundation (CMMI: 1353170 ) towards the conduct of this study. The contents of this paper reflect the views of the authors who are responsible for the facts and accuracy of the data presented herein, and do not necessarily reflect the views and policies of NSF, nor do the contents constitute a standard, specification or a regulation. We gratefully acknowledge the use of facilities within the Laboratory for the Science of Sustainable Infrastructural Materials (LS-SIM) and the LeRoy Eyring Center for Solid State Sciences (LE-CSSS) at Arizona State University. Raw materials were provided by Schuff Steel, Iron Shell LLC, Omya AG, Headwaters Inc., and Burgess Pigments, which are acknowledged.
Publisher Copyright:
© 2015 Elsevier Ltd. All rights reserved.
PY - 2015/6/16
Y1 - 2015/6/16
N2 - This paper explores the fracture properties of a novel and sustainable glass-fiber reinforced composite, the matrix for which is formed through the aqueous, anoxic, room-temperature carbonation of (waste) metallic iron powder along with other minor ingredients. A comparison of the properties of this binder with Ordinary Portland Cement pastes, which constitutes one of the most common and economic ceramic matrices is also provided. The iron-based binder system exhibits fracture parameters (fracture toughness, KICS and critical crack tip opening displacement, CTODC, determined using two parameter fracture model, TPFM) that are significantly higher when compared to those of the OPC systems in both the unreinforced and glass fiber reinforced states. The beneficial influence of the unreacted metallic iron particles of large aspect ratio, on the fracture parameters of iron-based binders are elucidated. The strain energy release rates show trends that are in line with the fracture parameters from TPFM. The elastic and inelastic components of strain energy release rate are separated in an effort to capture the fundamental toughening mechanisms in these systems. The fracture parameters determined using a non-contact, digital image correlation technique are found to relate well to those obtained from TPFM.
AB - This paper explores the fracture properties of a novel and sustainable glass-fiber reinforced composite, the matrix for which is formed through the aqueous, anoxic, room-temperature carbonation of (waste) metallic iron powder along with other minor ingredients. A comparison of the properties of this binder with Ordinary Portland Cement pastes, which constitutes one of the most common and economic ceramic matrices is also provided. The iron-based binder system exhibits fracture parameters (fracture toughness, KICS and critical crack tip opening displacement, CTODC, determined using two parameter fracture model, TPFM) that are significantly higher when compared to those of the OPC systems in both the unreinforced and glass fiber reinforced states. The beneficial influence of the unreacted metallic iron particles of large aspect ratio, on the fracture parameters of iron-based binders are elucidated. The strain energy release rates show trends that are in line with the fracture parameters from TPFM. The elastic and inelastic components of strain energy release rate are separated in an effort to capture the fundamental toughening mechanisms in these systems. The fracture parameters determined using a non-contact, digital image correlation technique are found to relate well to those obtained from TPFM.
KW - Digital image correlation
KW - Fibers
KW - Fracture toughness
KW - Iron carbonate
KW - Particle reinforcement
UR - http://www.scopus.com/inward/record.url?scp=84935850352&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84935850352&partnerID=8YFLogxK
U2 - 10.1016/j.conbuildmat.2015.06.011
DO - 10.1016/j.conbuildmat.2015.06.011
M3 - Article
AN - SCOPUS:84935850352
SN - 0950-0618
VL - 93
SP - 360
EP - 370
JO - Construction and Building Materials
JF - Construction and Building Materials
ER -