Extended Use of Limestone Fines in Various Concretes

File

2016-WangKejin-ExtendedUse.pdf (718.49 KB)

Date

2016

Authors

Wang, Kejin
Bektas, Faith
Wang, Kejin

Publisher

David Publishing

Altmetrics

Authors

Wang, Kejin

Person

Professor

Organizational Units

Civil, Construction and Environmental Engineering

Organizational Unit

Department

Civil, Construction and Environmental Engineering

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.

Comments

This article is published as Lomboy, Gilson R., Fatih Bektas, and Kejin Wang. "Extended Use of Limestone Fines in Various Concretes." Journal of Civil Engineering and Architecture 10 (2016): 995-1005. DOI:10.17265/1934-7359/2016.09.003. Copyright 2016 The Author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. Posted with permission.

Keywords

Limestone fines, semi-flowable self-consolidating concrete, high performance concrete