Publication
Quantitative study of Portland cement hydration by X-ray diffraction/Rietveld analysis and independent methods
Publications associées (36)
Synthesis, crystal growth and physical properties of the frustrated spin ladder material BiCu2PO6
In recent years quantum antiferromagnets with an intrinsically disordered (“spin liquid”) ground state and an energy gap in the spin excitation spectrum have received a great deal of attention. In search for new experimental realizations of spin-ladder and ...
EPFL2013Cement substitution by a combination of metakaolin and limestone
Karen Scrivener, Mathieu Antoni, John Espen Rossen
This study investigates the coupled substitution of metakaolin and limestone in Portland cement (PC). The mechanical properties were studied in mortars and the microstructural development in pastes by X-ray diffraction, thermogravimetry analysis, mercury i ...
Pergamon-Elsevier Science Ltd2012Application of the Rietveld method to the analysis of anhydrous cement
Karen Scrivener, Vanessa Kocaba
X-ray powder diffraction allows direct measurement of the phase content in cement. More recently, whole pattern approaches such as the Rietveld method show an improvement in both within (repeatability) and between laboratory (reproducibility) precision. Th ...
2011The origin of early age expansions induced in cementitious materials containing shrinkage reducing admixtures
Karen Scrivener, Barbara Lothenbach, Patrick Juilland
Studies on the early-age shrinkage behavior of cement pastes, mortars, and concretes containing shrinkage reducing admixtures (SRAs) have indicated these mixtures frequently exhibit an expansion shortly after setting. While the magnitude of the expansion h ...
2011Development of X-Ray Powder Diffraction Methods for Biomolecules
The comparable order of magnitude between interatomic distances in a crystal and the wavelength of X-rays make X-ray crystallography the ideal analytical tool to gain insight into the structure of crystalline material, including biomolecules. Nevertheless, ...
EPFL2011Impact of chloride on the mineralogy of hydrated Portland cement systems
Chloride ion is in part bound into ordinary Portland cement paste and modifies its mineralogy. To understand this a literature review of its impacts has been made and new experimental data were obtained. Phase pure preparations of Friedel's salt, Ca4Al2(Cl ...
2010Early age strength enhancement of blended cement systems by CaCl2 and diethanol-isopropanolamine
The enhancement of the 1 day strength of cementinous systems by a combination of calcium chlonde (CaCl2) and diethanol-isopropanolamine (DEIPA) was studied, particularly in blended cement systems A combination of quantitative X-ray diffraction with Rietvel ...
2010Influence of self heating and Li2SO4 addition on the microstructural development of calcium aluminate cement
Karen Scrivener, Emmanuel Gallucci, Christophe Gosselin
Hydrated Calcium Aluminate Cement (CAC) is known to have a complex microstructure involving different phase assemblages strongly dependant on the temperature. This work presents an experimental approach to study the microstructure of CAC pastes from the fi ...
2010Development and evaluation of methods to follow microstructural development of cementitious systems including slags
Production of cementitious materials causes the emission of CO2 gas, which has detrimental impact on the environment augmenting the global warming process. Using by-products such as slags is a possible strategy to limit the environmental impact of cementit ...
EPFL2009