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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Extended Use of Limestone Fines in Various Concretes
Author(s)
Gilson R. Lomboy1, Fatih Bektas1, 2 and Kejin Wang1
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DOI:10.17265/1934-7359/2016.09.003
Affiliation(s)
1. Department of Civil, Construction and Environmental Engineering, Iowa State University, Ames, IA 50011, USA
2. Institute for Transportation, Iowa State University, Ames, IA 50010, USA
ABSTRACT
Limestone fines are increasingly used in cement and concrete for
improved material properties and sustainability. This paper presents recent
research at Iowa State University on utilization of
limestone fines in concrete. It includes the beneficial uses of limestone fines in: (1) limestone
blended Portland cement; (2) SFSCC (semi-flowable
self-consolidating concrete); and (3) HPC (high performance
concrete). The research results show that using 5%~10% of limestone fines to replace for Type IP cement (with 25% fly ash)
increased mortar strength. Well-designed SFSCC with 25% limestone fines (by
mass of cementitious materials) displayed desirable rheological and mechanical
properties required for slip-forming construction. The newly developed
limestone fines-based HPC reached the one-day compressive strength of over 28
MPa.
KEYWORDS
Limestone fines, semi-flowable self-consolidating concrete, high performance concrete.
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