Publications de Shashank Bishnoi

Characterisation and hydration kinetics of beta-C2S synthesised with K2SO4 as dopant

Karen Scrivener, Shashank Bishnoi, Franco Alberto Zunino Sommariva, Sreejith Krishnan

In this study, a protocol for synthesising beta-C2S using K2SO4 as a dopant has been reported. Quantitative X-Ray diffraction was used to characterise synthesised samples. It was observed that it is possible to synthesise beta-C2S with high purity (>96 wt% ...

Pergamon-Elsevier Science Ltd2023

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

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

Limestone calcined clay cement and concrete: A state-of-the-art review

Karen Scrivener, Shashank Bishnoi, Meenakshi Sharma

This article reviews the rapidly developing state-of-the-art literature available on the subject of the recently developed limestone calcined clay cement (LC3). An introduction to the background leading to the development of LC3 is first discussed. The che ...

Pergamon-Elsevier Science Ltd2021

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

Karen Scrivener, Shashank Bishnoi, Quang Huy Do

Purpose ...

EMERALD GROUP PUBLISHING LTD2020

Reactivity tests for supplementary cementitious materials: RILEM TC 267-TRM phase 1

Mohsen Ben Haha, Mathieu Antoni, Karen Scrivener, Shashank Bishnoi, Ruben Anton Snellings, Xuerun Li, Anuj Parashar, Yuvaraj Dhandapani

A primary aim of RILEM TC 267-TRM: Tests for Reactivity of Supplementary Cementitious Materials (SCMs) is to compare and evaluate the performance of conventional and novel SCM reactivity test methods across a wide range of SCMs. To this purpose, a round ro ...

SPRINGER2018

Calcined clay limestone cements (LC3)

Karen Scrivener, Shashank Bishnoi

The use of supplementary cementitious materials (SCMs) to replace part of the clinker in cement is the most successful strategy to reduce CO2 emissions in the global cement industry. However, limited supplies of conventional SCMs make it difficult to take ...

Pergamon-Elsevier Science Ltd2018

Changes in in microstructure characteristics of cement paste on carbonation

Karen Scrivener, Shashank Bishnoi, Vineet Pawan Shah

Pergamon-Elsevier Science Ltd2018

Microstructural Modeling of Early-Age Creep in Hydrating Cement Paste

Karen Scrivener, Shashank Bishnoi

This paper presents a new approach to model the creep behavior of cement paste at early ages. The creep behavior is simulated by applying a time-varying generalized Maxwell model on the individual elements of a finite-element mesh of a simulated three-dime ...

Asce-Amer Soc Civil Engineers2016

Microstructural modelling of the elastic properties of tricalcium silicate pastes at early ages

Karen Scrivener, Shashank Bishnoi, Quang Huy Do

This paper describes the numerical calculation of elastic properties of a simulated microstructure of cement paste from very early age, when most previous models fail to give accurate results. The development of elastic properties of tricalcium silicate pa ...

Techno-Press2015

Numerical Simulation of Porosity in Cements

Karen Scrivener, Shashank Bishnoi, Quang Huy Do

The pores in cementitious materials, their sizes and connectivity have an important influence on the durability of concrete. Several microstructural models have been developed to simulate the three-dimensional pore network in cement pastes. In this article ...

Springer Netherlands2013

Modelling early age hydration kinetics of alite

Karen Scrivener, Shashank Bishnoi, Aditya Kumar

The modelling platform mu ic [1] has been used to investigate the mechanisms occurring during the hydration of alite. It is shown that it is possible to obtain a good simulation of the hydration kinetics through the implementation of two mechanisms: a diss ...

Pergamon-Elsevier Science Ltd2012

Discussion of the paper "Accelerated growth of calcium silicate hydrates" by Luc Nicoleau

Karen Scrivener, Shashank Bishnoi

Some of the limitations of the model recently used by Nicoleau in a recent article [Accelerated growth of calcium silicate hydrates: experiments and simulations, Cement Concr. Res. 21 (2011) 1339 - 1348.] are discussed. (C) 2012 Elsevier Ltd. All rights re ...

Pergamon-Elsevier Science Ltd2012

Studying nucleation and growth kinetics of alite hydration using μic

Karen Scrivener, Shashank Bishnoi

This paper investigates the applicability of nucleation and growth mechanisms to the hydration of alite. Various possible mechanisms of nucleation and growth were simulated using the recently-developed microstructural modelling platform mu ic. Comparison w ...

Pergamon-Elsevier Science Ltd2009

μic: A new platform for modelling the hydration of cements

Karen Scrivener, Shashank Bishnoi

A new modelling platform, called mu ic has been developed to model the microstructural evolution of hydrating cement paste. The platform uses the vector approach and can be used for modelling particulate reactions including the hydration of many different ...

Pergamon-Elsevier Science Ltd2009

Vector modelling of hydrating cement microstructure and kinetics

Shashank Bishnoi

A new modelling framework, called μic, has been developed to enable simulations of complex particulate growths, in particular the microstructural evolution of hydrating cement paste. μic has been developed using the vector approach, which preserves the mul ...

EPFL2008