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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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Hay, Rotana
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (5/5 displayed)
- 2022Shrinkage, hydration, and strength development of limestone calcined clay cement (LC3) with different sulfation levelscitations
- 2022Phase evolution, micromechanical properties, and morphology of calcium (alumino)silicate hydrates C-(A-)S-H under carbonationcitations
- 2020Influencing factors on micromechanical properties of calcium (alumino) silicate hydrate C-(A-)S-H under nanoindentation experimentcitations
- 2020Hydration, carbonation, strength development and corrosion resistance of reactive MgO cement-based compositescitations
- 2019Effect of volcanic ash pozzolan or limestone replacement on hydration of Portland cementcitations
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article
Effect of volcanic ash pozzolan or limestone replacement on hydration of Portland cement
Abstract
<p>The replacement of Portland cement (PC) with either supplementary cementitious material (SCM) or fillers, such as natural pozzolans (NP) or limestone powder (LP) respectively, is known to affect the chemical properties of concrete, thus influencing its fresh and hardened properties. This study investigated the effects of volcanic ash NP or LP on setting time, normal consistency, hydration, and strength properties of cement paste and mortar while following the chemical changes that were a direct result of the substitution. While both materials were found to increase water demand, NP at 30% and 50% replacement levels increased setting time while LP at 15% replacement level insignificantly influenced the property. At a proportion lower than their replacement levels, both materials reduced the ultimate compressive strength of mortar. Thermal, chemical and microstructural analyses confirmed the participatory roles of NP and LP in controlling reaction kinetics and forming new hydration products.</p>