Browsing ODA Open Digital Archive by Author "Kongshaug, Simen Sørgaard"
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Challenges related to structural modelling and assessment of concrete structures affected by alkali-silica reactions
Kongshaug, Simen Sørgaard; Kanstad, Terje; Hendriks, Max; Kioumarsi, Mahdi; Markeset, Gro (Journal article; Peer reviewed, 2017)Alkali-Silica Reaction (ASR) in concrete is a chemical process between dissolved alkali and hydroxyl ions from pore solutions in the cement paste, and reactive (amorphous) silica within the aggregates. The product of the ... -
Experimental investigation of ASR-affected concrete – The influence of uniaxial loading on the evolution of mechanical properties, expansion and damage indices
Kongshaug, Simen Sørgaard; Oseland, Oddbjørn Wathne; Kanstad, Terje; Hendriks, Max; Rodum, Eva; Markeset, Gro (Construction and Building Materials;Volume 245, 10 June 2020, 118384, Journal article; Peer reviewed, 2020-02-19)The alkali silica reaction (ASR) in concrete causes internal localized swelling and micro cracking, which result in expansion and correlated deterioration of the concrete material. The stress state of the concrete is known ... -
Load effects in reinforced concrete beam bridges affected by alkali–silica reaction—Constitutive modelling including expansion, cracking, creep and crushing
Kongshaug, Simen Sørgaard; Larssen, Rolf Magne; Hendriks, Max; Markeset, Gro; Kanstad, Terje (Engineering structures;Volume 245, 15 October 2021, 112945, Peer reviewed; Journal article, 2021-08-13)Material modelling, from the micro to the macro level, of concrete affected by alkali–silica reaction (ASR) has been devoted a lot of research. However, the application of the material models in structural analyses of ... -
Structural analysis of reinforced concrete beams affected by alkali-silica reaction with focus on material models for concrete
Tairi, Albian; Nesheim, Leonard-Johan (MABY;2020, Master thesis, 2020)Alkali-silica reaction (ASR) is a chemical reaction that occurs in concrete between the alkalized cement and silica within the aggregates. ASR produces a gel around the aggregates which absorbs water, expands, results in ... -
Toward identifying the ASR-induced stresses from displacement measurements and crack observations—Demonstration on a beam bridge in Norway
Kongshaug, Simen Sørgaard; Markeset, Gro; Kanstad, Terje; Hendriks, Max (Engineering structures;Volume 263, 15 July 2022, 114337, Peer reviewed; Journal article, 2022-05-24)Alkali–silica reaction (ASR) in concrete causes expansion and degradation of the material, which might give adverse structural consequences. From the structural engineer point view, the greatest concern is if ASR leads to ...