Publications de Karen Scrivener

Greenhouse Gas Emissions and Decarbonization Potential of Global Fired Clay Brick Production

Fired clay bricks (FCBs) are a dominant building material globally due to their low cost and simplicity of production, especially in low- and middle-income countries. With a projected rising housing demand, commensurate growth in brick demand is anticipate ...

AMER CHEMICAL SOC2025

CementFF4: Formal atomic charge polarizable force field for cementitious systems – Bulk and surface

Karen Scrivener, Paul Bowen, Manuel Cordova, Ziga Casar

A general-purpose formal charge polarizable force field for cementitious systems, CementFF4, is presented. The force field includes the following species: Ca, Si, O, H, Al, Zn, OH− and H2O. The force field is a significant extension of previous force field ...

Pergamon-Elsevier Science Ltd2025

Suitability of Excavated London Clay from Tunnelling Operations as a Supplementary Cementitious Material and Expanded Clay Aggregate

Karen Scrivener, Franco Alberto Zunino Sommariva

London Clay is a marine geological formation that is relatively abundant in the London Basin area in the United Kingdom. It primarily originates from reworked Jurassic shale, greensand and chalk and lateritic Eocene soils with a mineralogy consisting of ka ...

2025

Quantification of nano-crystalline C-S-H in hydrated tricalcium silicate, Portland cement and fly ash cement using PONKCS method

Karen Scrivener, Xuerun Li

X-ray powder diffraction (XRD) was used to characterize and quantify nano-crystalline C-S-H in hydrated tricalcium silicate (C3S), Portland cement, and siliceous fly ash blended cement using Rietveld analysis with partial or no known crystal structure (PON ...

PERGAMON-ELSEVIER SCIENCE LTD2025

A Novel Uniaxial Penetration Approach to Investigate Sulfate Attack on Cement-Based Materials

Karen Scrivener, Qiao Wang

The sodium sulfate crystallization attack in cementitious materials is addressed in this paper. Portland cement, sulfate-resisting cement, and calcined clay limestone cement were compared by the evolution of expansion, sulfate ingress property, and suscept ...

Springer Science and Business Media B.V.2025

Towards the Design of an Industry-Suitable Technique to Assess Overcalcination of Kaolinitic Clays

Karen Scrivener, Franco Alberto Zunino Sommariva

It is well known that kaolinite dehydroxylate between 600 and 850 °C, and the maximum reactivity is achieved for calcination temperatures of about 800 °C. From an industrial perspective, controlling undercalcination is an easy task, as XRD or TGA could be ...

Springer Science and Business Media B.V.2025

Influence of Calcium Aluminate Cement Addition on the Hydration and Strength of Limestone Calcined Clay Cement

Karen Scrivener

Limestone calcined clay cement (LC3) is an alternative cement that allows reduction by up to 40% of the CO2 emissions per ton of cement produced. With this green binder, it is possible to replace 50% or more of Portland cement (PC) while maintaining simila ...

Springer Science and Business Media B.V.2025

Hydration and phase assemblage of limestone calcined clay cements (LC3) with clinker content below 50 %

Karen Scrivener, Franco Alberto Zunino Sommariva

Limestone calcined clay cement (LC3) is a promising material for producing cement with low CO2 emissions and properties similar to, or superior to, those of Portland cement (PC), but at 50 % clinker content (LC3-50). In many applications, lower strengths t ...

Pergamon-Elsevier Science Ltd2024

pyCSH: Automated atomic-level structure generation of bulk C-S-H and investigation of their intrinsic properties

Karen Scrivener, Paul Bowen, Ziga Casar

A new Python code for the automated generation of realistic bulk calcium silicate hydrate (C-S-H) structures is introduced. The code was used to generate 400 structures with Ca/Si of 1.3, 1.5, 1.7, and 1.9. The generated structures are in excellent agreeme ...

Pergamon-Elsevier Science Ltd2024

Studies on Assemblies. Mass Made Units

Karen Scrivener, Anja Fröhlich, Martin Fröhlich, Alia Kenza Bengana, Clemens Waldhart, Marlène Audrey Bertille Leroux, Francis Jacquier, Hisham Tarek Mohamed Hafez

In light of increased demands for resource-saving, long-lasting, and low-maintenance buildings, the potential of solid construction methods is coming back into focus. This publication takes a closer look at building with solid, serially produced components ...

Triest Verlag2024