Browsing SINTEF Open by Author "Geiker, Mette Rica"
Now showing items 1-14 of 14
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25 years of field exposure of pre-cracked concrete beams; combined impact of spacers and cracks on reinforcement corrosion
Geiker, Mette Rica; Danner, Tobias; Michel, Alexander; Belda Revert, Andres; Linderoth, Oskar; Hornbostel, Karla (Peer reviewed; Journal article, 2021)The state of corrosion of three pre-cracked concrete beams was investigated after 25 years of marine exposure (atmospheric, tidal and submerged). The influence of inadequate plastic spacers was found to overrule the possible ... -
Concluding destructive investigation of a nine-year-old marine-exposed cracked concrete panel
Geiker, Mette Rica; Robuschi, Samanta; Lundgren, Karin; Paraskevoulakos, Charilaos; Gundlach, Carsten; Danner, Tobias Alexander; Hjorth Jakobsen, Ulla; Michel, Alexander (Peer reviewed; Journal article, 2023)This study undertaken on a nine-year-old cracked concrete panel further investigates the impact of cracks on the corrosion performance of conventional steel reinforcement in marine-exposed concrete to explain observed ... -
Determining the free alkali metal content in concrete – Case study of an ASR-affected dam
Plusquellec, Gilles; Geiker, Mette Rica; Lindgård, Jan; De Weerdt, Klaartje (Journal article; Peer reviewed, 2018)In concrete affected by alkali–silica reaction (ASR), aggregates react in the high pH environment and cause deleterious expansion and cracking of the concrete. Leaching of alkali metals from the concrete might therefore ... -
Durability aspects of cracks in concrete: field observations
Geiker, Mette Rica; Danner, Tobias; Hornbostel, Karla; Michel, Alexander (Nordic Concrete Research;17, Chapter, 2019)The research presented in this paper briefly summarises findings from a project on impact of cracks on reinforcement corrosion within the Norwegian Public Roads Administration’s R&D program “Ferry-free coastal route E39”. ... -
Effect of leaching on the composition of hydration phases during chloride exposure of mortar
Machner, Alisa; Bjørndal, Marie Helene; Justnes, Harald; Hanžič, Lucija; Šajna, Aljoša; Gu, Yushan; Benoît, Bary; Ben Haha, Mohsen; Geiker, Mette Rica; De Weerdt, Klaartje (Peer reviewed; Journal article, 2022)Mortar specimens were exposed to either a 3% NaCl solution or a 3% NaCl+KOH solution for up to 180 days. Exposure to the NaCl solution provoked much more leaching than the NaCl+KOH exposure. Leaching strongly impacted the ... -
Field Station Sandnessjøen, Effect of cracks in concrete after 25 years - Data report
Danner, Tobias; Belda Revert, Andres; Geiker, Mette Rica (Statens vegvesens rapporter;374, Research report, 2020)Tre opprissede betongbjelker støpt med forskjellige bindemiddelsammensetninger ble undersøkt etter 25 års marin eksponering ved feltstasjon Sandnessjøen. Betongbjelkene ble undersøkt med tanke på effekten av riss på ... -
Mineralogical Sequence of Self-Healing Products in Cracked Marine Concrete
Danner, Tobias; Jakobsen, Ulla Hjorth; Geiker, Mette Rica (Journal article; Peer reviewed, 2019)Self-healing of cracked concrete beams after 25 years of marine exposure was investigated. The extent of self-healing and the chemical and mineralogical composition of the self-healing products were characterized, and ... -
Non-destructive Test Methods for Corrosion Detection in Reinforced Concrete Structures
Hornbostel, Karla; Danner, Tobias; Geiker, Mette Rica (Peer reviewed; Journal article, 2020)Several inspection methods can be used to assess the corrosion state of steel reinforcement in concrete. Especially for periodical field surveys and monitoring, non-destructive testing (NDT) methods are to be preferred as ... -
On the effect of calcium lignosulfonate on the rheology and setting time of cement paste
Colombo, Alessia; Geiker, Mette Rica; Justnes, Harald; Lauten, Rolf Andreas; De Weerdt, Klaartje (Journal article; Peer reviewed, 2017)The effect of softwood calcium lignosulfonate, LSs, on the rheology and setting time of cement paste has been investigated. Two Portland cements with different surface area and C3A content were used. The lignosulfonate was ... -
On the mechanisms of consumption of calcium lignosulfonate by cement paste
Colombo, Alessia; Geiker, Mette Rica; Justnes, Harald; Lauten, Rolf Andreas; De Weerdt, Klaartje (Journal article; Peer reviewed, 2017)The aim of this paper is to assess the mechanisms of consumption of softwood calcium lignosulfonate (LSs) by cement paste. The LSs consumption by two different cements (CX and ANL) and two reference materials (CaCO3 and ... -
Role of calcium on chloride binding in hydrated Portland cement–metakaolin–limestone blends
Shi, Zhenguo; Geiker, Mette Rica; De Weerdt, Klaartje; Østnor, Tone Anita; Lothenbach, Barbara; Winnefeld, Frank; Skibsted, Jørgen (Journal article; Peer reviewed, 2017)Chloride binding is investigated for Portland cement–metakaolin–limestone pastes exposed to CaCl2 and NaCl solutions. The phase assemblages and the amount of Friedel's salt are evaluated using TGA, XRD and thermodynamic ... -
Self-healing and Chloride Ingress in Cracked Cathodically Protected Concrete Exposed to Marine Environment for 33 Years
Danner, Tobias; Hornbostel, Karla; Strømme, Øyvind; Geiker, Mette Rica (NTNU report;R-1-2019, Research report, 2019-11-22)Cracks facilitate ingress of aggressive substances. Depending on the exposure, this might lead to early reinforcement corrosion initiation. Possible self-healing of cracks may reduce their long-term impact, and conditions ... -
The effect of calcium lignosulfonate on ettringite formation in cement paste
Colombo, Alessia; Geiker, Mette Rica; Justnes, Harald; Lauten, Rolf A; De Weerdt, Klaartje (Journal article; Peer reviewed, 2018)The effect of a softwood calcium lignosulfonate, LSs, on the ettringite formed in cement paste was investigated. Two Portland cements, mainly differing in surface area and C3A content, were used. The effect of LSs addition ... -
Workshop on Moisture in Concrete, Trondheim, Norway 6–7 February 2012. Measurement of moisture and relative humidity in concrete. FA 3 Technical performance. FA 3.2 Service life
De Weerdt, Klaartje; Geiker, Mette Rica (COIN Projet report;81, Research report, 2016)