TY - JOUR
T1 - Microstructural packing- and rheology-based binder selection and characterization for Ultra-high Performance Concrete (UHPC)
AU - Arora, Aashay
AU - Aguayo, Matthew
AU - Hansen, Hannah
AU - Castro, Cesar
AU - Federspiel, Erin
AU - Mobasher, Barzin
AU - Neithalath, Narayanan
N1 - Funding Information:
The authors sincerely acknowledge the Arizona Department of Transportation (ADOT) for funding this research (Grant no: SPR 745 ). The materials used for this study were provided by BASF Corporation, Salt River Materials Group, Burgess Pigments, and Omya A.G., and their contributions are acknowledged. This research was conducted in the Laboratory for the Science of Sustainable Infrastructural Materials at Arizona State University and the support that has made this laboratory possible is acknowledged. 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 the funding agency, nor do the contents constitute a standard, specification, or a regulation.
PY - 2018/1
Y1 - 2018/1
N2 - This paper reports strategies to design the binder phase of ultra-high performance concretes (UHPC) from commonly available cement replacement (fly ash, slag, microsilica, metakaolin) and fine filler (limestone) materials. A packing algorithm is used to extract the number density, mean centroidal distance, and coordination number of the microstructure. Similarly, rheological studies on the pastes provide yield stress, plastic viscosity, and min-slump spread. The selection criteria involves using the three microstructural and three rheological parameters individually or in combination to define packing and flow coefficients. The selection criteria is flexible enough to allow users modify the constraints depending on the application. In this study, only ternary and quaternary blends, with a total cement replacement of 30% by mass are selected for further characterization. The highly efficient microstructural packing in these mixtures and better workability that facilitated dispersion of particles to enhance the reactivity results in beneficial pore structure and mechanical properties.
AB - This paper reports strategies to design the binder phase of ultra-high performance concretes (UHPC) from commonly available cement replacement (fly ash, slag, microsilica, metakaolin) and fine filler (limestone) materials. A packing algorithm is used to extract the number density, mean centroidal distance, and coordination number of the microstructure. Similarly, rheological studies on the pastes provide yield stress, plastic viscosity, and min-slump spread. The selection criteria involves using the three microstructural and three rheological parameters individually or in combination to define packing and flow coefficients. The selection criteria is flexible enough to allow users modify the constraints depending on the application. In this study, only ternary and quaternary blends, with a total cement replacement of 30% by mass are selected for further characterization. The highly efficient microstructural packing in these mixtures and better workability that facilitated dispersion of particles to enhance the reactivity results in beneficial pore structure and mechanical properties.
KW - Compressive strength
KW - Hydration
KW - Microstructure
KW - Rheology
KW - Ultra-high performance concrete
UR - http://www.scopus.com/inward/record.url?scp=85032579132&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85032579132&partnerID=8YFLogxK
U2 - 10.1016/j.cemconres.2017.10.013
DO - 10.1016/j.cemconres.2017.10.013
M3 - Article
AN - SCOPUS:85032579132
SN - 0008-8846
VL - 103
SP - 179
EP - 190
JO - Cement and Concrete Research
JF - Cement and Concrete Research
ER -