A Numerical Approach to Multiscale Simulation of Cement Paste Strength

Michal Hlobil; Konstantinos Sotiriadis

doi:10.4028/www.scientific.net/SSP.325.3

Paper Titles

Preface

A Numerical Approach to Multiscale Simulation of Cement Paste Strength
p.3

Effect of Waste Glass on Portland Cement Hydration Process
p.9

The Influence of Chrysotile Nanofibers Dispersion on the Physical and Mechanical Properties of the Cement Matrix
p.21

Prediction of Sulfate Attack Products in Portland-Limestone Cements: The Effect of Cation Type and Concentration
p.28

New Possibilities of Determining the Resistance of Cement Composite to Abrasion by Fast Flowing Water
p.34

Characterization of Carbonatation Rate of Alkali-Activated Blast Furnace Slag in Various Environments
p.40

The Effect of Opal-Containing Rocks on the Properties of Lightweight Oil-Well Cement
p.47

Influence of the Chemical Composition of Bauxite on Mineral Formation and Properties of Sulfoaluminate-Ferrite Cement
p.53

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A Numerical Approach to Multiscale Simulation of Cement Paste Strength

Abstract:

Recent experimental investigations on the nanoscale of hardened cement paste revealed that the tensile strengths of the microstructural phases present amount to several hundreds of MPa. Confrontation with macroscopic tensile strength testing, by e.g. Brazilian splitting, shows a decrease over two orders of magnitude. A computational model based on a hierarchical representation of hardened cement paste microstructure is presented in this paper, attempting to shed light on the factors affecting the scaling of strength from the nanoscopic scale up to the macroscopic scale. The model is validated on a case study featuring a Portland-limestone cement paste subjected to an external sulfate attack. Such conditions compromise the nanoscopic integrity of the C-S-H gel as a consequence of the progressive decalcification and affect the overall load-bearing capacity of the macroscopic cement paste specimen.

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Periodical:

Solid State Phenomena (Volume 325)

Pages:

3-8

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.325.3

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Online since:

October 2021

Authors:

Michal Hlobil*, Konstantinos Sotiriadis

Keywords:

Cement Paste, C-S-H, Microstructure, Sulfate Attack, Tensile Strength

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* - Corresponding Author

References

[1] M. Hlobil, J. Kunecký, V. Koudelková, M. Drdácký, Torsional shear of mortar: experimental characterization and multiscale modeling, Cons Build Mater 254 (2020), p.119126.

DOI: 10.1016/j.conbuildmat.2020.119126

Google Scholar

[2] T. Powers and T. Brownyard, Studies of the physical properties of hardened portland cement paste, J Amer Con Inst Vol 43 (1947), pp.101-992.

Google Scholar

[3] P. Termkhajornkit, Q. Vu, R. Barbarulo, S. Daronnat, G. Chanvillard, Dependence of compressive strength on phase assemblage in cement pastes: Beyond gel–space ratio - Experimental evidence and micromechanical modeling, Cem Con Res 56 (2014), pp.1-11.

DOI: 10.1016/j.cemconres.2013.10.007

Google Scholar

[4] M. Hlobil, V. Šmilauer, G. Chanvillard, Micromechanical multiscale fracture model for compressive strength of blended cement pastes, Cem Con Res 83 (2016), pp.188-202.

DOI: 10.1016/j.cemconres.2015.12.003

Google Scholar

[5] J. Němeček, V.Králík, V. Šmilauer, L. Polívka, A. Jäger, Tensile strength of hydrated cement paste phases assessed by micro-bending tests and nanoindentationCem Con Comp 73 (2016), pp.164-173.

DOI: 10.1016/j.cemconcomp.2016.07.010

Google Scholar

[6] K. Sotiriadis, M. Hlobil, A. Viani, P. Mácová, M. Vopálenský, submitted to Cem Con Res (2021).

Google Scholar