| 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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Jensen, Ole Mejlhede
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (17/17 displayed)
- 2020Air void analysis of hardened concrete without colour enhancementcitations
- 2020Variation in phase quantification of white portland cement by XRD
- 2016Proceedings of the International RILEM Conference Materials, Systems and Structures in Civil Engineering 2016
- 2016Can superabsorbent polymers mitigate shrinkage in cementitious materials blended with supplementary cementitious materials?
- 2016Can superabsorbent polymers mitigate shrinkage in cementitious materials blended with supplementary cementitious materials?
- 2015The influence of superabsorbent polymers on the autogenous shrinkage properties of cement pastes with supplementary cementitious materialscitations
- 2015The influence of superabsorbent polymers on the autogenous shrinkage properties of cement pastes with supplementary cementitious materialscitations
- 2015Superabsorbent Polymers as a Means of Improving Frost Resistance of Concretecitations
- 2013Thermal analysis of cement pastes with superabsorbent polymers
- 2013Use of Superabsorbent Polymers in Concrete
- 2012The Pozzolanic reaction of silica fumecitations
- 2009Synthesis of pure Portland cement phasescitations
- 2007Standard Test Method for Autogenous Strain of Cement Paste and Mortar
- 2005Micro-crack detection in high-performance cementitious materials
- 2004Mitigation strategies for autogenous shrinkage cracking
- 2003Autogenous shrinkage in high-performance cement paste: An evaluation of basic mechanisms
- 2003A thermal comparator sensor for measuring autogenous deformation in hardening Portland cement paste
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article
Autogenous shrinkage in high-performance cement paste: An evaluation of basic mechanisms
Abstract
In this paper, various mechanisms Suggested to cause autogenous shrinkage are presented. The mechanisms are evaluated from the point of view of their soundness and applicability to quantitative modeling of autogenous shrinkage. The capillary tension approach is advantageous, because it has a sound mechanical and thermodynamical basis. Furthermore, this mechanism is easily applicable in a numerical model when dealing with a continuously changing microstructure. In order to test the numerical model, autogenous deformation and internal relative humidity (RH) of a Portland cement paste were measured during the first week of hardening. The isothermal heat evolution was also recorded to monitor the progress of hydration and the elastic modulus in compression was measured. RH change, degree of hydration and elastic modulus were used as input data for the calculation of autogenous deformation based on the capillary tension approach. Because a part of the RH drop in the cement paste is due to dissolved salts in the pore solution, a method is suggested to separate this effect from self-desiccation and to calculate the actual stress in the pore fluid associated with menisci formation.