| Records |
| Author |
Külls, C.; Schwarz, O. |
| Title |
Grundwasseranreicherung in den Waldbeständen der Teninger Allmend bei Freiburg im Breisgau |
Type |
Book Chapter |
| Year |
2000 |
Publication  |
Beiträge zur Physischen Geographie |
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Pages |
67 - 78 |
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Fachbereich Geowissenschaften der Johann Wolfgang Goethe-Universität Frankfurt am Main |
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| Publisher |
Werner-F. Bär |
Place of Publication |
Frankfurt am Main |
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| Call Number |
THL @ christoph.kuells @ |
Serial |
72 |
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| Author |
Külls, C. |
| Title |
Rekonstruktion hydrologischer Extreme in der Namibwüste |
Type |
Journal Article |
| Year |
2011 |
Publication |
Berichte der naturforschenden Gesellschaft zu Freiburg im Breisgau |
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Issue |
101 |
Pages |
69-81 |
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no |
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THL @ christoph.kuells @ |
Serial |
71 |
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| Author |
Dávila, P.; Külls, C.; Weiler, M. |
| Title |
A toolkit for groundwater mean residence time interpretation with gaseous tracers |
Type |
Journal Article |
| Year |
2013 |
Publication |
Computers & Geosciences |
Abbreviated Journal |
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| Volume |
61 |
Issue |
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Pages |
116-125 |
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Pergamon |
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no |
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THL @ christoph.kuells @ Davila2013toolkit |
Serial |
22 |
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| Author |
Emparanza, A.R.; Kampmann, R.; Caso, F.D.; Morales, C.; Nanni, A. |
| Title |
Durability assessment of GFRP rebars in marine environments |
Type |
Journal Article |
| Year |
2022 |
Publication |
Construction and Building Materials |
Abbreviated Journal |
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| Volume |
329 |
Issue |
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Pages |
127028 |
| Keywords |
Composite FRP rebar, Durability, Service life, Marine structures, Reinforced concrete |
| Abstract |
Technologies developed over the last two decades have facilitated the use of glass fiber reinforced polymer (GFRP) bars as internal reinforcement for concrete structures, specially in coastal environments, mainly due to their corrosion resistance. To-date, most durability studies have focused on a single mechanical parameter (tensile strength) and a single aging environment (exposure to high alkalinity). However, knowledge gaps exists in understanding how other mechanical parameters and relevant conditioning environments may affect the durability of GFRP bars. To this end, this study assesses the durability for different physio-mechanical properties of GFRP rebars, post exposure to accelerated conditioning in seawater. Six different GFRP rebar types were submerged in seawater tanks, at various temperatures (23°C, 40°C and 60°C) for different time periods (60, 120, 210 and 365 days). In total six different physio-mechanical properties were assessed, including: tensile strength, E-modulus, transverse and horizontal shear strength, micro-structural composition and lastly, bond strength. It was inferred that rebars with high moisture absorption resulted in poor durability, in that it affected mainly the tensile strength. Based on the Arrhenius model, at 23°C all the rebars that met the acceptance criteria by ASTM D7957 are expected to retain 85% of the tensile strength capacity. |
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| ISSN |
0950-0618 |
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no |
| Call Number |
THL @ christoph.kuells @ Ruizemparanza2022127028 |
Serial |
83 |
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| Author |
Jin, Z.; Külls, C. |
| Title |
FDM based OA-ICOS for high accuracy 13C quantification in gaseous CO2 |
Type |
Journal Article |
| Year |
2020 |
Publication |
Earth and Environmental Science |
Abbreviated Journal |
EES |
| Volume |
446 |
Issue |
3 |
Pages |
032061 |
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IOP Conference Series |
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no |
| Call Number |
THL @ christoph.kuells @ Jin2020fdm |
Serial |
16 |
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| Author |
Krüger, N.; Külls, C.; Bruggeman, A.; Eliades, M.; Christophi, C.; Rigas, M.; Eracleous, T. |
| Title |
Groundwater recharge estimates with soil isotope profiles-is there a bias on coarse-grained hillslopes? |
Type |
Conference Article |
| Year |
2020 |
Publication |
EGU General Assembly Conference Abstracts |
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Issue |
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Pages |
9840 |
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no |
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THL @ christoph.kuells @ Krueger2020groundwater |
Serial |
42 |
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| Author |
Tziritis, E.; Aschonitis, V.; Balacco, G.; Daras, P.; Doulgeris, C.; Fidelibus, M.D.; Gaubi, E.; Gueddari, M.; Güler, C.; Hamzaoui, F.; others |
| Title |
MEDSAL Project-Salinization of critical groundwater reserves in coastal Mediterranean areas: Identification, risk assessment and sustainable management with the use of integrated modelling and smart ICT tools |
Type |
Conference Article |
| Year |
2020 |
Publication |
EGU General Assembly Conference Abstracts |
Abbreviated Journal |
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Issue |
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Pages |
2326 |
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no |
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THL @ christoph.kuells @ Tziritis2020medsal |
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43 |
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| Author |
Doulgeris, C.; Tziritis, E.; Pisinaras, V.; Panagopoulos, A.; Külls, C. |
| Title |
Prediction of seawater intrusion to coastal aquifers based on non-dimensional diagrams |
Type |
Conference Article |
| Year |
2020 |
Publication |
EGU Geophysical Abstracts |
Abbreviated Journal |
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Pages |
4073 |
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no |
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THL @ christoph.kuells @ Doulgeris2020prediction |
Serial |
41 |
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| Author |
Gaj, M.; Beyer, M.; Hamutoko, J.; Uugulu, S.; Wanke, H.; Koeniger, P.; Külls, C.; Lohe, C.; Himmelsbach, T. |
| Title |
How do soil types affect stable isotope ratios of 2H and 18O under evaporation: A Fingerprint of the Niipele subbasin of the Cuvelai-Etosha basin, Namibia |
Type |
Conference Article |
| Year |
2014 |
Publication |
EGU Geophysical Abstracts |
Abbreviated Journal |
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Issue |
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Pages |
5890 |
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no |
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THL @ christoph.kuells @ Gaj2014soil |
Serial |
44 |
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| Author |
Joseph, J.; Külls, C. |
| Title |
Calibration of 13C and 18O measurements in CO2 using Off-axis Integrated Cavity Output Spectrometer (ICOS) |
Type |
Conference Article |
| Year |
2014 |
Publication |
EGU Geophysical Abstracts |
Abbreviated Journal |
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| Volume |
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Pages |
659 |
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no |
| Call Number |
THL @ christoph.kuells @ Joseph2014calibration |
Serial |
45 |
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