693.932 PEOPLE
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| Naji, M. |
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| Petrov, R. H. | Madrid |
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Van Tittelboom, Kim
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (36/36 displayed)
- 2024Early-age shrinkage assessment of cementitious materials : a critical reviewcitations
- 2024Non-destructive evaluation of ductile-porous versus brittle 3D printed vascular networks in self-healing concretecitations
- 2023Assessment of pore structure characteristics and tortuosity of 3D printed concrete using mercury intrusion porosimetry and X-ray tomographycitations
- 2023Assessment of pore structure characteristics and tortuosity of 3D printed concrete using mercury intrusion porosimetry and X-ray tomography
- 2023Production of calcium carbonate-precipitating biomass powder as self-healing additive in concrete and performance evaluation in mortarcitations
- 2023Development of a calcium sulfoaluminate-Portland cement binary system for twin-pipe 3D concrete printingcitations
- 2023Recent progress and technical challenges in using calcium sulfoaluminate (CSA) cementcitations
- 2023Bacteria-based self-healing concrete exposed to frost salt scalingcitations
- 2023Extending 3D concrete printing to hard rock tunnel linings : adhesion of fresh cementitious materials for different surface inclinationscitations
- 2023Influence of retarders on the hydration and rheology of calcium sulfo aluminate cement
- 2022Properties and testing of printed cement-based materials in hardened statecitations
- 2022Influence of 3D printed vascular networks in self-healing cementitious materials on water absorption studied via neutron imaging
- 2022Mechanical and microstructural properties of 3D printable concrete in the context of the twin-pipe pumping strategycitations
- 2022Stiffening controllable concrete modified with redispersible polymer powder for twin-pipe printingcitations
- 2022Stiffening controllable concrete modified with redispersible polymer powder for twin-pipe printingcitations
- 2022Transport properties of 3D printed cementitious materials with prolonged time gap between successive layerscitations
- 2022Transport properties of 3D printed cementitious materials with prolonged time gap between successive layerscitations
- 2022Adhesive properties of fresh cementitious materials as measured by the tack test
- 2022Using limestone powder as a carrier for the accelerator in extrusion-based 3D concrete printingcitations
- 2021An investigation of suitable healing agents for vascular-based self-healing in cementitious materialscitations
- 2021Manual application versus autonomous release of water repellent agent to prevent reinforcement corrosion in cracked concretecitations
- 20213D printing of cementitious materials with superabsorbent polymers : a durable solution?
- 2021Treatment with nano-silica and bacteria to restore the reduced bond strength between concrete and repair mortar caused by aggressive removal techniquescitations
- 2021Evaluation of test methods for self-healing concrete with macrocapsules by inter-laboratory testing
- 2021Evaluation of test methods for self-healing concrete with macrocapsules by inter-laboratory testing
- 2020Addressing the need for standardization of test methods for self-healing concrete : an inter-laboratory study on concrete with macrocapsulescitations
- 2020Effect of limestone powder substitution on fresh and hardened properties of 3D printable mortarcitations
- 2020Addressing the need for standardization of test methods for self-healing concrete: an inter-laboratory study on concrete with macrocapsules.
- 2020Addressing the need for standardization of test methods for self-healing concrete: an inter-laboratory study on concrete with macrocapsulescitations
- 2019Microstructural characterization of 3D printed cementitious materialscitations
- 2019Microstructural characterization of 3D printed cementitious materialscitations
- 2019Bond improvement between concrete substrates and repair systems by bacterial CaCO3 precipitation
- 2019Stiffening control of printable cement paste with flash setting admixture
- 2018Effect of Polyurethane Viscosity on Self-Healing Efficiency of Cementitious Materials Exposed to High Temperatures from Sun Radiationcitations
- 2018Poly(methyl methacrylate) capsules as an alternative to the ‘’proof-of-concept’’ glass capsules used in self-healing concrete
- 2016The microstructure of capsule containing self-healing materials: A micro-computed tomography studycitations
Places of action
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article
Transport properties of 3D printed cementitious materials with prolonged time gap between successive layers
Abstract
3D concrete printing is a promising additive manufacturing technique, integrated in construction industry to improve the geometrical complexity without expensive formworks. Due to the layered extrusion of the material, the porosity increases. This makes the component more prone to shrinkage and crack formation and increases the preferential ingress paths for aggressive substances. This can affect the durability and microstructure of the printed elements in a negative way. To assess the durability of 3D printed materials, three deterioration mechanisms (i.e. chloride ingress, carbonation and freeze/thaw) are investigated, considering different time gaps (i.e. 0 and 30 min) in between the layers and a comparison with traditional cast specimens was made. It was found that the resistance of 3D printed specimens against the penetration of chemical substances decreases with an increasing time gap. Compared with cast specimens, a higher saturated mass after frost attack could be observed in case of printed specimens.