Mineral hydration

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Related publications (31)

The Atomic-Level Structure of Cementitious Calcium Aluminate Silicate Hydrate

David Lyndon Emsley, Karen Scrivener, Paul Bowen, Pierrick Berruyer, Brennan James Walder, Pinelopi Moutzouri, Aslam Kunhi Mohamed, Jirawan Siramanont, Maya Nicole Harris, Mattia Negroni

Despite use of blended cements containing significant amounts of aluminum for over 30 years, the structural nature of aluminum in the main hydration product, calcium aluminate silicate hydrate (C-A-S-H), remains elusive. Using first-principles calculations ...

2020

Hydration development and thermal performance of calcium sulphoaluminate cements containing microencapsulated phase change materials

Diana Londoño Zuluaga

Microencapsulated phase change materials (MPCM) incorporated in buildings walls can reduce indoor temperature fluctuations, conserving energy and enhancing thermal comfort. MPCM were incorporated in calcium sulphoaluminate cement (CSA) at high concentratio ...

Pergamon-Elsevier Science Ltd2020

Role of Iron Sulfide Phases in the Stability of Noncrystalline Tetravalent Uranium in Sediments

Rizlan Bernier-Latmani, Luca Loreggian

Uranium (U) in situ bioremediation has been investigated as a cost-effective strategy to tackle U contamination in the subsurface. While uraninite was believed to be the only product of bioreduction, numerous studies have revealed that noncrystalline U(IV) ...

AMER CHEMICAL SOC2020

Montmorillonite clay-modified disposable ink-jet-printed graphene electrode as a sensitive voltammetric sensor for the determination of cadmium(II) and lead(II)

Hubert Girault, Andreas Stephan Lesch, Milica Jovic, Victor Costa Bassetto, Léopoldine Guenang Sonfack

This work describes a new sensitive sensor for the simultaneous electrochemical determination by square wave anodic stripping voltammetry of Cd2+ and Pb2+ ions in aqueous solution, based on a disposable ink-jet-printed graphene electrode (IPGE) modifed by ...

2020

Microstructural modelling of autogenous shrinkage in Portland cement paste at early age

Karen Scrivener, Shashank Bishnoi, Quang Huy Do

Purpose ...

EMERALD GROUP PUBLISHING LTD2020

The effect of sodium hydroxide on Al uptake by calcium silicate hydrates (C S H)

Christian Ludwig, Barbara Lothenbach, Sonya Barzgar, Mohamed Tarik, Alessio Di Giacomo

To reduce the CO2 emissions from cement production, Portland cement (PC) is partially replaced by supplementary cementitious materials (SCM). Reactions of SCM with PC during hydration leads to the formation of CSH with more silicon and aluminum than in PC, ...

2020

Limestone 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

Basic creep of cement paste at early age - the role of cement hydration

Karen Scrivener, Pietro Lura

In this work, the uniaxial creep in compression during the first days of hydration is studied experimentally on cement pastes with w/c of 0.50. to order to assess the effect of the evolving microstructure on creep, the so-called equivalent systems are empl ...

Pergamon-Elsevier Science Ltd2019

Hydration reactions and stages of clinker composed mainly of stoichiometric ye'elimite

Karen Scrivener, Emmanuelle Boehm Courjault, Mohsen Ben Haha, Frank Bullerjahn

Ye'climitc (Ca4Al6O12SO4 or C(4)A(3)(S) over bar) is the main hydraulic mineral present in calcium sulfoaluminate cement (CSA). The hydration of ye'elimite is responsible for the early age cement properties. We identify 5 stages in the hydration of neat st ...

Pergamon-Elsevier Science Ltd2019

Quantification of amorphous siliceous fly ash in hydrated blended cement pastes by X-ray powder diffraction

Karen Scrivener, Ruben Anton Snellings, Xuerun Li

X-ray powder diffraction (XRPD)-based quantitative phase analysis is a common technique for studying the hydration of cementitious systems. Hydrated cements often comprise several amorphous or nanocrystalline phases. This paper presents a protocol for the ...

INT UNION CRYSTALLOGRAPHY2019

From Experiment to Kinetic and Thermodynamic Modelling of Precipitation: Examples of Calcium Silicate Hydrate (C-S-H) and Gold Nanoparticles

Mohammad Reza Andalibi

Precipitation is a process wherein a solid phase forms from a solution. Precipitation is at the heart of many industries producing pharmaceuticals, catalysts, ceramics, and nanoparticles. In addition to being a material synthesis route, precipitation has i ...

EPFL2019

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