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Towards ternary binders involving limestone additions — A review by Yuvaraj Dhandapani; Manu Santhanam; Gopakumar Kaladharan; Sivakumar Ramanathan is a Engineering article available to read on EtoBox.

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The review summarises literature to examine the transition from portland limestone cement system to composite ternary binder systems involving limestone. Interest in limestone addition as an ideal component in multicomponent binder systems has surged as evident from the large volume of literature published in the recent past. A ternary blended system, with co-substitution of limestone, has the potential to complement the reaction of the supplementary cementitious materials (SCMs). The direct addition of limestone powder helps to attain higher substitution levels of portland cement clinker, improve early age properties, and supplement SCM's reactivity. However, the dilution of hydrates could hamper the long-term benefits. In this review, the interaction of fine limestone is classified and elaborated under two broad umbrellas: physical and chemical interactions. The physical interactions can manifest in three ways, namely, filler action, shearing action and improved packing, which alters reaction rate and extent at early ages. The chemical interactions also modify the reaction kinetics and phase assemblage due to nucleation of C-S-H on calcite surfaces, preservation of the ettringite

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Author

Yuvaraj Dhandapani; Manu Santhanam; Gopakumar Kaladharan; Sivakumar Ramanathan

Publisher

Elsevier BV

Published

2021

Language

EN

Field

Engineering (Physical Sciences)