Browsing NTNU Open 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 (Chapter, 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 (Peer reviewed; Journal article, 2020)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 (Peer reviewed; Journal article, 2021)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 ... -
Load effects of alkali-silica reaction in reinforced concrete beam bridges - Material testing, Constitutive modelling and Numerical simulation
Kongshaug, Simen Sørgaard (Doctoral theses at NTNU;2023:20, Doctoral thesis, 2023)Alkali-silica reaction (ASR) is a deterioration process in concrete that was discovered in the mid-1930s, and which still affects concrete structures all over the world. ASR is considered a multi-scale phenomenon; it is a ... -
The effect of accelerated ASR on the mechanical properties and degree of damage of concrete over time - with and without uniaxial compressive stress
Oseland, Oddbjørn (Master thesis, 2018)The aim of this master thesis is to investigate the effect on mechanical properties and degree of damage in concrete exposed to accelerated Alkali-silica reaction (ASR) and uniaxial com-pressive stress, and test if the ... -
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 (Peer reviewed; Journal article, 2022)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 ...