The Effect of Limestone on the Hydration and Workability of Ternary Blended Cement LC3: Limestone, Calcined Clays and Cement

Author(s): Aurélie R. Favier and Karen L. Scrivener
Paper category: Proceedings
Book title: Proceedings of International Conferences (ICACMS) Advances in Construction Materials and systems Vol 2
Editor(s): Manu Santhanam, Ravindra Gettu, Radhakrishna G. Pillai, Sunitha K. Nayar
ISBN: 978-2-35158-194-0
e-ISBN: 978-2-35158-191-9
Publisher: RILEM Publications SARL
Publication year: 2017
Pages: 134-141
Total Pages: 8
Language : English

Abstract: Our study is based on the replacement of 45% of clinker by calcined clay and limestone; the
cement is known as LC3 cement. It has been found that limestone accelerates hydration at
early ages while calcined clay has pozzolanic properties, also the reaction between limestone
and calcined clay contributes to strength development. The kinetics of these reactions are
closely linked to the particle size distribution and the BET specific surface of the raw
materials. It is widely accepted that the smaller the particle size and larger surface area, faster
the reaction. However, if the cement is too fine, the water demand will increase drastically.
Some previous work already showed that the calcined clays and the limestone are not 100%
reacted. In this study, we propose to optimize the size distribution of limestone by mixing
different grades of limestone (with different particle size). Finally, it will be found a
compromise between the strength development and the workability.

Online publication : 2017
Publication type : full_text
Public price (Euros) : 0.00