Title: Portland Limestone Cement Equivalent Strength Explained

Author(s): Laurent Barcelo, Michael D.A. Thomas, Kevin Cail, Anik Delagrave, Bruce Blair

Publication: Concrete International

Volume: 35

Issue: 11

Appears on pages(s): 41-47

Keywords: clinker, fineness, hydration, particle size

DOI:

Date: 11/1/2013

Abstract:
This article reports on the mechanisms that allow portland limestone cement (PLC) mixtures to maintain the same levels of strength as portland cement (PC) mixtures. Mechanisms discussed include the filler effect, increased cement paste volume, heterogeneous nucleation, faster kinetics of hydration, and production of calcium carboaluminates. The performance of two PLCs produced on two different milling circuits are compared against a control PC produced on one of the same circuits.