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Pro118-2

Temporal Evolution of Microstructure, Chemical and Mechanical Properties of Tricalcium Silicate



Author(s): Aleena Alex and Pijush Ghosh
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: 622-627
Total Pages: 6
Language : English


Abstract: Hydration of cement clinkers, tricalcium and dicalcium Silicates (C3S and C2S) play a major role in determining the final strength and durability of concrete. Both these minerals contain molecules such as calcium oxide and silicon dioxide in varying proportions and contribute to the strength development. However, they differ in terms of crystal structure, hydraulic activity and mechanical properties. Hence in this work, temporal evolution of physical and mechanical properties of one of these cement clinkers (tricalcium silicate/C3S) and its hydration products are monitored over time and quantified at nano scale. To assess the individual contributions to mechanical strength pure form of the mineral is used. Mechanical properties of the hydrating phases are determined using Nano indentation. Scanning Electron Microscopy (SEM) is used for imaging and microstructure analysis. The chemical reactions taking place in the mix and the various product formations are tracked over time via Raman Spectroscopy. The study aims at exploring the fundamental mechanisms governing the different stages of hydration and evaluating the influence of these mechanisms in determining the final strength. This understanding is crucial in engineered cement design with enhanced
properties.


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


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