Publication
Composition, silicate anion structure and morphology of calcium silicate hydrates (C-S-H) synthesised by silica-lime reaction and by controlled hydration of tricalcium silicate (C3S)
Publications associées (36)
Atomic-Level Structure and Thermodynamic and Kinetic Modelling of Zinc-Modified C-S-H
The most promising solution towards cementitious materials with a lower carbon footprint is the partial substitution of the clinker by supplementary cementitious materials (SCMs) such as fly ash, blast furnace slag, limestone and calcined clays. The produc ...
EPFL2023Going Below 50% Clinker Factor in Limestone Calcined Clay Cements (LC3): A Comparison with Pozzolanic Cements from the South American Market
Karen Scrivener, Franco Alberto Zunino Sommariva
Limestone calcined clays are a promising technology as they offer similar performance to OPC from 7 days onwards, while enabling a reduction of the clinker content of 50%. In some regions of the world like South America, pozzolanic cements (i.e., blended c ...
SPRINGER INTERNATIONAL PUBLISHING AG2023Atomistic modeling of C-S-H: bulk and surface
By replacing part of Portland cement with so-called supplementary cementitious materials (SCMs) it is possible to reduce the CO2 footprint of the cement industry. These SCMs are commonly limestone, calcined clay, slag and fly ash. While doing so the early ...
EPFL2023Atomic-Level and Surface Structure of Calcium Silicate Hydrate Nanofoils
Karen Scrivener, Paul Bowen, Aslam Kunhi Mohamed, Ziga Casar
Deciphering the calcium silicate hydrate (C-S-H) surface is crucial for unraveling the mechanisms of cement hydration and property development. Experimental observations of C-S-H in cement systems suggest a surface termination which is fundamentally differ ...
AMER CHEMICAL SOC2023Reactive dicalcium silicate binders: Microstructure and transport properties
The calcium silicate hydrates (C-S-H) are without doubt one of the most important hydration products in a hardened cement paste. Giving the complexity of the microstructure that forms by hydration of ordinary Portland cement (OPC) and the more recently use ...
EPFL2022Effect of alkali, aluminium and equilibration time on calcium-silicate-hydrates
Calcium silicate hydrate (C-S-H) is the main hydration product in Portland and blended cements, and greatly affects durability and mechanical properties of the hydrated cement. In the presence of Al-rich supplementary cementitious materials (SCMs), C-(A-)S ...
EPFL2022Hydration and durability of fast hardening binders incorporating supplementary cementitious materials
The use of supplementary cementitious materials (SCMs) is widely considered the most promis-ing approach to reduce CO2 emissions relative to cement production. SCMs are not commonly present in binders used for special applications. On the other hand, due t ...
EPFL2022Report of RILEM TC 267-TRM: Improvement and robustness study of lime mortar strength test for assessing reactivity of SCMs
Karen Scrivener, Mathieu Antoni, Ruben Anton Snellings, Mohsen Ben Haha, Shashank Bishnoi, Xuerun Li, Pawel Tadeusz Durdzinski, Anuj Parashar, Yuvaraj Dhandapani
RILEM TC 267-TRM is studying tests for the reactivity supplementary cementitious materials (SCMs). In the first phase, the lime reactivity (LR) test, which is standardised in Indian standard (IS)-1727, gave promising correlations with 90-days cement mortar ...
SPRINGER2022The effect of alkali hydroxides and equilibration time on Al uptake by calcium silicate hydrates (C-S-H)
Cement production accounts for approximately 8% of man-made CO2 emissions. Lowering these CO2 emissions is currently one of the most important and urgent research topics within the cement community. To reduce these emissions, the Portland cement (PC) is pa ...
EPFL2021Limestone calcined clay cements (LC3): raw material processing, sulfate balance and hydration kinetics
Franco Alberto Zunino Sommariva
Limestone calcined clay cements (LC3) are blended cements that combine clinker, limestone, calcined clay and gypsum. The availability of the materials required to produce LC3 and the good performance that it achieves, makes LC3 suitable as a sustainable re ...
EPFL2020