Limestone calcined clay cements (LC3): effect of raw material properties on hy- dration and strength

Author(s): Franco Zunino, Karen Scrivener
Paper category: Proceedings
Book title: Proceedings of the International Conference on Sustainable Materials, Systems and Structures (SMSS2019) New Generation of Construction Materials
Editor(s): Marijana Serdar, Nina Štirmer, John Provis
ISBN: 978-2-35158-217-6,
Vol 1. ISBN: 978-2-35158-223-7
e-ISBN: 978-2-35158-218-3
Publisher: RILEM Publications SARL
Publication year: 2019
Pages: 481-485
Total Pages: 5
Language : English

Abstract: Limestone calcined-clay cements (LC3) take advantage of the synergetic effects of calcium carbonate reaction with the additional aluminum provided by the calcined clay. Previous research showed that calcined kaolinite content is an important factor that governs the strength development of these materials. This study explores the effect of kaolinite content from 20 to 95% on mechanical properties of LC3-50 and LC3-65 (50% and 65% clinker factor respectively) systems by dilution of pure metakaolin. The effect of metakaolin dilution was coupled with other factors that were observed to have a significant impact on hydration kinetics and strength, such as limestone particle size. Compressive strength was monitored on mortar specimens in accordance with EN196 standard. Different strategies to increase the early-age strength (before 7 days) were explored. Chemical (alkali content adjustment) and physical (limestone particle size adjustment) approaches were tested and compared to control systems.

Online publication : 2019
Publication type : full_text
Public price (Euros) : 0.00