TY - JOUR
T1 - The rheological properties of ternary binders containing Portland cement, limestone, and metakaolin or fly ash
AU - Vance, Kirk
AU - Kumar, Aditya
AU - Sant, Gaurav
AU - Neithalath, Narayanan
N1 - Funding Information:
The authors gratefully acknowledge the National Science Foundation (CMMI 1068985), Arizona State University (ASU) , and the University of California, Los Angeles (UCLA) for support of this research. The materials for this research provided by U.S. Concrete, OMYA A.G, Headwaters Resources, and Burgess Pigments, are acknowledged. K.V. also acknowledges the Dean's Fellowship from the Ira A. Fulton Schools of Engineering at ASU. This research was conducted in the Laboratory for the Science of Sustainable Infrastructural Materials (LS-SIM) and LeRoy Eyring Center for Solid State Science at ASU, and the Laboratory for the Chemistry of Construction Materials (LC 2 ) and Molecular Instrumentation Center (MIC) at the University of California, Los Angeles. The authors gratefully acknowledge the support that has made these laboratories possible. 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.
Copyright:
Copyright 2013 Elsevier B.V., All rights reserved.
PY - 2013
Y1 - 2013
N2 - The influence of limestone particle size and the type and extent of (partial) cement replacement on the yield stress and plastic viscosity of ternary pastes are studied. Interpretations based on Bingham model indicate: (i) for binary/ternary blends containing coarse limestone, the yield stress and plastic viscosity remain unchanged or decrease with increasing cement replacement, (ii) in ternary blends, plastic viscosity increases with the fine limestone content, and (iii) the yield stress in ternary blends containing fly ash is dependent on the limestone content and fineness whereas in blends containing metakaolin, the yield stress reduces with an increase in limestone content, irrespective of the limestone particle size. These are attributed to: particle packing, water demand, and the interparticle spacing and contacts which are quantified using microstructural simulations. The yield stress and plastic viscosity show strong direct correlations to the specific surface area and inverse correlations to the water film thickness.
AB - The influence of limestone particle size and the type and extent of (partial) cement replacement on the yield stress and plastic viscosity of ternary pastes are studied. Interpretations based on Bingham model indicate: (i) for binary/ternary blends containing coarse limestone, the yield stress and plastic viscosity remain unchanged or decrease with increasing cement replacement, (ii) in ternary blends, plastic viscosity increases with the fine limestone content, and (iii) the yield stress in ternary blends containing fly ash is dependent on the limestone content and fineness whereas in blends containing metakaolin, the yield stress reduces with an increase in limestone content, irrespective of the limestone particle size. These are attributed to: particle packing, water demand, and the interparticle spacing and contacts which are quantified using microstructural simulations. The yield stress and plastic viscosity show strong direct correlations to the specific surface area and inverse correlations to the water film thickness.
KW - Fly ash (D)
KW - Limestone
KW - Metakaolin (D)
KW - Particle size distribution (B)
KW - Rheology (A)
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U2 - 10.1016/j.cemconres.2013.07.007
DO - 10.1016/j.cemconres.2013.07.007
M3 - Article
AN - SCOPUS:84882268190
SN - 0008-8846
VL - 52
SP - 196
EP - 207
JO - Cement and Concrete Research
JF - Cement and Concrete Research
ER -