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Karen Scrivener

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Publications associées (271)

Atomic-Level Structure of Zinc-Modified Cementitious Calcium Silicate Hydrate

Paul Bowen, Karen Scrivener, Manuel Cordova, David Lyndon Emsley, Anna Morales Melgares, Pinelopi Moutzouri, Ziga Casar, Amrit Venkatesh

It has recently been demonstrated that the addition of zinc can enhance the mechanical strength of tricalcium silicates (C3S) upon hydration, but the structure of the main hydration product of cement, calcium silicate hydrate (C-S-H), in zinc modified form ...

AMER CHEMICAL SOC2022

The role of cavitation in drying cementitious materials

Mohsen Ben Haha, Karen Scrivener, Monisha Rastogi

This study examines the role of cavitation in drying cementitious materials. Classical nucleation theory is used to understand and study the parameters that influence cavitation pressures. The water desorption isotherms indicate that both heterogeneous and ...

Pergamon-Elsevier Science Ltd2022

Report of RILEM TC 267-TRM: Improvement and robustness study of lime mortar strength test for assessing reactivity of SCMs

Mohsen Ben Haha, Mathieu Antoni, Karen Scrivener, Shashank Bishnoi, Pawel Tadeusz Durdzinski, Ruben Anton Snellings, Xuerun Li, 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 ...

SPRINGER2022

Microstructural developments of limestone calcined clay cement (LC3) pastes after long-term (3 years) hydration

Karen Scrivener, Franco Alberto Zunino Sommariva

LC3 is one of the most promising alternatives for a high-performance blended cement with a significantly lower clinker content and with potential for worldwide adoption. For this reason, understanding its long-term performance is relevant to ensure service ...

Pergamon-Elsevier Science Ltd2022

The effect of paste composition, aggregate mineralogy and temperature on the pore solution composition and the extent of ASR expansion

Karen Scrivener, Barbara Lothenbach, Mahsa Bagheri

The reaction kinetics of the alkali silica reaction depends on the composition of the pore solution. The evolution of the pore solution composition in different cement pastes and concretes was studied. Pastes containing silica fume or metakaolin had the lo ...

SPRINGER2022

Investigation of phase formation, microstructure and mechanical properties of LC3 based autoclaved aerated blocks

Karen Scrivener

This study investigates the microstructure, phase formation, and mechanical properties of LC3-50 based auto-claved aerated blocks. The microstructure and phase formation is studied using SEM-EDS and X-ray diffraction techniques. The fresh and hardened prop ...

ELSEVIER SCI LTD2022

The Challenge of Grinding Ternary Blends Containing Calcined Clays and Limestone

Karen Scrivener, Franco Alberto Zunino Sommariva, Juan Alberto Ribalta Quesada

The inclusion of high specific surface materials such as calcined clays in cementitious systems enhances the hydration of clinker products at very early ages, but it may also increase water demand; thus, the pursuit of a flowing concrete may demand an incr ...

MDPI2022

A method for the reliable and reproducible precipitation of phase pure high Ca/Si ratio (>1.5) synthetic calcium silicate hydrates (C-S-H)

Paul Bowen, Karen Scrivener, Maya Nicole Harris, Grace Simpson

Various methods have been developed to synthesize C-S-H; however, these methods have only allowed for the successful production of pure-phase C-S-H with Ca:Si of 1.5 or less. Attempts to form higher Ca:Si ratios by these methods gives C-S-H (Ca:Si 1.5 or l ...

Pergamon-Elsevier Science Ltd2022

Hydration and mixture design of calcined clay blended cements: review by the RILEM TC 282-CCL

Mohsen Ben Haha, Karen Scrivener, François Henri Avet, Franco Alberto Zunino Sommariva, Anuj Parashar, Sreejith Krishnan, Yuvaraj Dhandapani

The RILEM technical committee 282-CCL: Calcined Clays as Supplementary Cementitious Materials, investigates all the aspects related to calcined clays, from clay exploration and characterization to calcination process, hydration reactions and concrete prope ...

SPRINGER2022

Report of RILEM TC 267-TRM phase 2: optimization and testing of the robustness of the R3 reactivity tests for supplementary cementitious materials

Mohsen Ben Haha, Karen Scrivener, Shashank Bishnoi, François Henri Avet, Pawel Tadeusz Durdzinski, Ruben Anton Snellings, Xuerun Li, Anuj Parashar, Diana Londoño Zuluaga, Alastair Thomas Matthew Marsh

The results of phase 1 of an interlaboratory test, coordinated by the RILEM TC 267-TRM "Tests for Reactivity of Supplementary Cementitious Materials" showed that the R-3 (rapid, relevant, reliable) test method, by measurement of heat release or bound water ...

SPRINGER2022

Clay calcination technology: state-of-the-art review by the RILEM TC 282-CCL

Mohsen Ben Haha, Karen Scrivener, Shashank Bishnoi, François Henri Avet, Adrian Alujas Diaz, Franco Alberto Zunino Sommariva, Anuj Parashar, Alastair Thomas Matthew Marsh

The use of calcined clays as supplementary cementitious materials provides the opportunity to significantly reduce the cement industry's carbon burden; however, use at a global scale requires a deep understanding of the extraction and processing of the cla ...

SPRINGER2022

Interlaboratory Test Program to Determine the Precision of the R3 Test Method (ASTM C1897-20) for Measuring Reactivity of Supplementary Cementitious Materials

Karen Scrivener, Ruben Anton Snellings, Diana Londoño Zuluaga

The substitution of portland clinker by supplementary cementitious materials (SCMs) is one of the main avenues for the further decarbonization of cement production. To secure future SCM supplies, generic and performance-related test methods for SCMs are re ...

AMER SOC TESTING MATERIALS2022

Multi-scale investigation on mechanical behavior and microstructural alteration of C-S-H in carbonated Alite paste

Karen Scrivener

Carbonation treatment is a promising option to enhance recycled concrete aggregate (RCA) quality and eventually improve concrete performance. This study investigated the multi-scale mechanical properties of calcium silicate hydrates (C-S-H) in a mature ali ...

Pergamon-Elsevier Science Ltd2021

Strength-promoting mechanism of alkanolamines on limestone-calcined clay cement and the role of sulfate

Karen Scrivener, François Henri Avet, Wilasinee Hanpongpun, Xuerun Li, Hong Huang

This paper reports the strength-promoting mechanism of alkanolamines on limestone-calcined clay cement (LC3). The hydration kinetics, phase formation and microstructure of LC3 with triethanolamine (TEA) or triisopropanolamine (TIPA) were investigated. TEA ...

Pergamon-Elsevier Science Ltd2021

Understanding the carbonation of concrete with supplementary cementitious materials: a critical review by RILEM TC 281-CCC (vol 53, 136, 2020)

Karen Scrivener, Barbara Lothenbach

A correction to this paper has been published: https://doi.org/10.1617/s11527-020-01558-w ...

SPRINGER2021

Effect of a liquid-type temperature rise inhibitor on cement hydration

Karen Scrivener

A liquid-type temperature rise inhibitor (L-TRI) based on modified sorbitol was developed to solve the thermal cracking issue by modulating the heat release from cement hydration during the early age. Both the exothermic process and phase evolution of ceme ...

Pergamon-Elsevier Science Ltd2021

The impact of calcite impurities in clays containing kaolinite on their reactivity in cement after calcination (vol 53, 44, 2020)

Karen Scrivener, Emmanuelle Boehm Courjault, Franco Alberto Zunino Sommariva

SPRINGER2021

Understanding of the factors slowing down metakaolin reaction in limestone calcined clay cement (LC3) at late ages

Paul Bowen, Mohsen Ben Haha, Karen Scrivener, François Henri Avet, Yosra Briki

Factors which could explain the slowing down of the metakaolin reaction in LC3 blends are investigated. Portlandite availability and the presence of aluminium ions in the pore solution are shown not to be limiting factors. ...

Pergamon-Elsevier Science Ltd2021

Alite-ye'elimite clinker: Hydration kinetics, products and microstructure

Karen Scrivener, Ruben Anton Snellings, Xuerun Li

This paper presents the hydration kinetics, products and microstructure of an alite-ye'elimite clinker containing 4 wt% of ye'elimite to boost the early strength development. Isothermal calorimetry, X-ray diffraction, backscattered scanning electron micros ...

ELSEVIER SCI LTD2021

Impact of limestone fineness on cement hydration at early age

Mohsen Ben Haha, Karen Scrivener, Yosra Briki

This study compares the influence of two limestone fineness on strength development and cement hydration. The replacement of clinker by 20% of fine limestone (d(v,50) = 2 mu m and SSA = 4,21 m(2)/g) gives similar strength development to PC up to 7 days. Fi ...

Pergamon-Elsevier Science Ltd2021

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