| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Bishnoi, Shashank
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2024Performance of cementitious systems containing calcined clay in a chloride-rich environment : A review by TC-282 CCLcitations
- 2023Comparative study of mechanical properties of limestone calcined clay cement, ordinary Portland cement, and pozzolana Portland cement
- 2022Durability performance of binary and ternary blended cementitious systems with calcined claycitations
- 2022Multiscale modelling of uniaxial compressive stress-strain behaviour of concrete using analytical homogenisation and damage mechanicscitations
- 2022Report of RILEM TC 267-TRM : improvement and robustness study of lime mortar strength test for assessing reactivity of SCMscitations
- 2022Report of RILEM TC 267-TRM : improvement and robustness study of lime mortar strength test for assessing reactivity of SCMscitations
- 2022Report of RILEM TC 267-TRM phase 2: Optimization and testing of the robustness of the R3 reactivity tests for supplementary cementitious materialscitations
- 2022Report of RILEM TC 267-TRM phase 2: optimization and testing of the robustness of the R3 reactivity tests for supplementary cementitious materialscitations
- 2022Report of RILEM TC 267-TRM phase 2: optimization and testing of the robustness of the R3 reactivity tests for supplementary cementitious materialscitations
- 2022Report of RILEM TC 267—TRM: Improvement and robustness study of lime mortar strength test for assessing reactivity of SCMscitations
- 2021Clay calcination technology: state-of-the-art review by the RILEM TC 282-CCL
- 2018Reactivity tests for supplementary cementitious materials RILEM TC 267-TRM phase 1citations
- 2018Reactivity tests for supplementary cementitious materials: RILEM TC 267-TRM phase 1citations
- 2017Numerical benchmark campaign of cost action tu1404 – microstructural modellingcitations
- 2011Modeling and simulation of cement hydration kinetics and microstructure developmentcitations
Places of action
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article
Multiscale modelling of uniaxial compressive stress-strain behaviour of concrete using analytical homogenisation and damage mechanics
Abstract
Heterogeneities in concrete manifest at various scales, from aggregates and its interfacial transition zone (ITZ) at macroscale to various hydration products at the microscale. On the application of load, cracks initiate from ITZ and propagate to the bulk cement paste (BCP), leading to the nonlinear stress-strain behaviour of concrete. This paper proposes a novel multiscale analytical approach to simulate the uniaxial stress-strain behaviour of concrete. Initially, the heterogeneous microstructure of ITZ and BCP is simulated using a cement hydration microstructure model (μic). Considering the gradient of phases in ITZ, aggregate gradation and aggregate volume fraction, stresses in the different phases in the ITZ and BCP are calculated by step-wise stress downscaling using continuum micromechanics. The initiation and propagation of cracks in the ITZ and BCP are modelled using damage mechanics. The efficacy of the current analytical approach is validated by comparing with the experimentally observed stress-strain curve. The current model investigates the relation between the macroscopic strain increment with the distribution of strain and the progression of damage in different ITZ layers. Through a parametric study, the influence of w/c ratio (0.30–0.50), aggregate volume fraction (30% and 50%), and aggregate size distribution on the stress-strain behaviour of concrete are discussed.