Blar i NTNU Open på forfatter "Leemann, Andreas"
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CO2 storage in cement and concrete by mineral carbonation
Winnefeld, Frank; Leemann, Andreas; German, Alexander; Lothenbach, Barbara (Peer reviewed; Journal article, 2022)The production of cement is responsible for about 8% of man-made CO2 emissions. CO2 fixation by mineral carbonation in Ca- and Mg-rich raw materials such as cement-based concrete in various stages of its lifetime and ... -
Formation of shlykovite and ASR-P1 in concrete under accelerated alkali-silica reaction at 60 and 80 °C
Shi, Zhenguo; Park, Solmoi; Lothenbach, Barbara; Leemann, Andreas (Peer reviewed; Journal article, 2020)Three types of alkali-silica reaction (ASR) products, i.e., crystalline K-shlykovite, Na-shlykovite and nano-crystalline ASR-P1, have recently been synthesized at 80 °C. It is critical to verify the formation of these ASR ... -
Predicting damage in aggregates due to the volume increase of the alkali-silica reaction products
Gallyamov, E.R.; Leemann, Andreas; Lothenbach, Barbara; Molinari, J.-F. (Peer reviewed; Journal article, 2022)Volume increase between the reactants and the products of alkali-silica reaction could reach up to 100%. Taking place inside the aggregates, ASR imposes internal pressure on the surrounding material. In the current paper, ... -
Predicting damage in aggregates due to the volume increase of the alkali-silica reaction products
Gallyamov, E.R.; Leemann, Andreas; Lothenbach, Barbara; Molinari, J.-F. (Peer reviewed; Journal article, 2022)Volume increase between the reactants and the products of alkali-silica reaction could reach up to 100%. Taking place inside the aggregates, ASR imposes internal pressure on the surrounding material. In the current paper, ... -
Synthesis of alkali-silica reaction product structurally identical to that formed in field concrete
Shi, Zhenguo; Leemann, Andreas; Rentsch, Daniel; Lothenbach, Barbara (Peer reviewed; Journal article, 2020)Alkali-silica reaction (ASR) can cause expansion and cracking of concrete. Despite significant progress over the past 80 years, the molecular structures of the ASR products remain poorly understood. These reaction products ...