| 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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Stephan, Dietmar
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (38/38 displayed)
- 2024The development of a fly ash-based geopolymer for extrusion-based 3D printing, along with a printability prediction method
- 2024Factors influencing thermal conductivity and compressive strength of natural fiber-reinforced geopolymer foams
- 2024Effect of resting time on rheological properties of glass bead suspensions: Depletion and bridging force among particles
- 2024Tailored rheological development in OPC systems by controlled ettringite precipitation and its effect on compressive strength
- 2024Use of residues as fillers in alkali‐activated binders
- 2024Investigation of the interface of fungal mycelium composite building materials by means of low‐vacuum scanning electron microscopycitations
- 2023Interlaboratory study on rheological properties of cement pastes and reference substances: comparability of measurements performed with different rheometers and measurement geometries
- 2023Presenting SLAMD – A Sequential Learning Based Software for the Inverse Design of Sustainable Cementitious Materialscitations
- 2023Seawater-Mixed Lightweight Aggregate Concretes with Dune Sand, Waste Glass and Nanosilica: Experimental and Life Cycle Analysis
- 2023Seawater-Mixed Lightweight Aggregate Concretes with Dune Sand, Waste Glass and Nanosilica: Experimental and Life Cycle Analysiscitations
- 2023Penetration test as a fast method to determine yield stress and structural build-up for 3D printing of cementitious materials
- 2023Data driven design of alkali-activated concrete using sequential learningcitations
- 2023Effect of resting time on rheological properties of glass bead suspensions: Depletion and bridging force among particlescitations
- 2023Provenancing of cement using elemental analyses and isotope techniques – the state-of-the-art and future perspectives
- 2022Xonotlite and hillebrandite as model compounds for calcium silicate hydrate seeding in cementitious materials
- 2022The Influence of Long-Term Autoclaving on the Properties of Ultra-High Performance Concretecitations
- 2022Insight into the microstructural and durability characteristics of 3D printed concrete: Cast versus printed specimens
- 2022Printable Cement-Based Materials: Fresh Properties Measurements and Controlcitations
- 2022Boosting Portland cement-free composite performance via alkali-activation and reinforcement with pre-treated functionalised wheat strawcitations
- 2021Early performances of cement paste in the presence of triethanolamine: Rheology, setting and microstructural development
- 2021The performance of ultra-lightweight foamed concrete incorporating nanosilica
- 2021Xonotlite and Hillebrandite as Model Compounds for Calcium Silicate Hydrate Seeding in Cementitious Materialscitations
- 2021Reaction of calcium carbonate minerals in sodium silicate solution and its role in alkali-activated systemscitations
- 2021Factors influencing thermal conductivity and compressive strength of natural fiber-reinforced geopolymer foamscitations
- 2021The effects of seawater and nanosilica on the performance of blended cements and composites
- 2021Evaluation of the effects of bismuth oxide (Bi2O3) micro and nanoparticles on the mechanical, microstructural and γ-ray/neutron shielding properties of Portland cement pastes
- 2021The effects of seawater on the hydration, microstructure and strength development of Portland cement pastes incorporating colloidal silica
- 2021Evaluating the effects of nanosilica on the material properties of lightweight and ultra-lightweight concrete using image-based approaches
- 2021Influence of foreign ions on calcium silicate hydrate under hydrothermal conditions: a reviewcitations
- 2020Interlaboratory study on rheological properties of cement pastes and reference substances: comparability of measurements performed with different rheometers and measurement geometries
- 2020Interlaboratory study on rheological properties of cement pastes and reference substances: comparability of measurements performed with different rheometers and measurement geometries
- 2020A Systematic Study on Polymer-Modified Alkali-Activated Slag−Part II: From Hydration to Mechanical Properties
- 2020Interlaboratory study on rheological properties of cement pastes and reference substances : comparability of measurements performed with different rheometers and measurement geometries
- 2020Interaction of Different Charged Polymers with Potassium Ions and Their Effect on the Yield Stress of Highly Concentrated Glass Bead Suspensionscitations
- 2019Preparation and Characterization of Ultra-Lightweight Foamed Concrete Incorporating Lightweight Aggregates
- 2019Influence of Nanosilica on Mechanical Properties, Sorptivity, and Microstructure of Lightweight Concrete
- 2019Relating Ettringite Formation and Rheological Changes during the Initial Cement Hydration: A Comparative Study Applying XRD Analysis, Rheological Measurements and Modelingcitations
- 2018The influence of nanomaterials on the thermal resistance of cement-based composites – a review
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article
The Influence of Long-Term Autoclaving on the Properties of Ultra-High Performance Concrete
Abstract
Thermal energy storage is a key component in harnessing renewable resources, compensating for the energy variations across time scales. A popular strategy for thermal energy storage is storing thermal energy in hot water tanks, which are generally made of copper, stainless steel, and vitreous enamel-lined carbon steel. However, these materials usually suffer a high production cost and short life cycle. UHPC with superior strength and durability holds the potential as a construction material for hot water tanks, which are commercially available and affordable for large-scale applications. During the charging process of hot water tanks, the UHPC structures are thus loaded by a long-term temperature-pressure load (autoclaving condition). However, the influence of long-term autoclaving on UHPC is still unclear. Therefore, the influence of long-term autoclaving at 200°C on the mechanical properties and microstructure of UHPC is studied here. The effect of the long-term autoclaving depends on the UHPC compositions. The compressive strength can stay robust owing to the accelerated formation of hydrates, while the flexural strength is vulnerable to the long-term autoclaving. Katoite, hydroxylellestadite, and scawtite are identified as the new hydrates in the autoclaved UHPC with typical components. The transformation of amorphous C-S-H into more ordered phases results in the low flexural strength and the undensified interface between the matrix and steel fibres. The partial replacement of cement by fly ash mitigates the detrimental effect of the long-term autoclaving. The incorporation of fly ash provides additional silica and increases the ratio of silica to cement, leading to more poorly crystallized C-S-H with a low Ca/Si ratio, which benefits microstructure densification and mechanical strength. The decrease of Ca/Si ratio and the increase of Al by fly ash accelerate the decomposition of katoite and hydroxylellestadite and formation of tobermorite. This study clarifies the influence of the long-term autoclaving on ...