Browsing NTNU Open by Author "Winnefeld, Frank"

Now showing items 1-9 of 9

    • CemGEMS – An easy-to-use web application for thermodynamic modelling of cementitious materials 

      Kulik, Dmitrii A.; Winnefeld, Frank; Kulik, Anton; Miron, George Dan; Lothenbach, Barbara (Journal article; Peer reviewed, 2021)
      Thermodynamic equilibrium calculations for cementitious materials enable predictions of stable phases and solution composition. In the last two decades, thermodynamic modelling has been increasingly used to understand the ...

    • 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 ...

    • Effect of alkali hydroxide on calcium silicate hydrate (C-S-H) 

      Yan, Yiru; Yang, Shen-Yu; Miron, G. Dan; Colings, Ines E.; L'Hôpital, Emilie; Skibsted, Jorgen; Winnefeld, Frank; Scrivener, Karen; Lothenbach, Barbara (Peer reviewed; Journal article, 2022)
      This paper investigates the effect of KOH and NaOH on C-S-H structure and solubility. Both KOH and NaOH have a similar effect, they increase pH values and silicon concentrations, and decrease calcium concentrations. At ...

    • Effect of temperature curing on properties and hydration of wollastonite blended magnesium potassium phosphate cements 

      Xu, Biwan; Winnefeld, Frank; Lothenbach, Barbara (Peer reviewed; Journal article, 2021)
      K-struvite, the main hydrate of magnesium potassium phosphate (MKP) cements, dehydrates at ~50 °C, thus elevated temperatures at service conditions could affect cement properties and durability. In this study, properties ...

    • Influence of aluminum sulfate on properties and hydration of magnesium potassium phosphate cements 

      Xu, Biwan; Winnefeld, Frank; Ma, Bin; Rentsch, Daniel; Lothenbach, Barbara (Peer reviewed; Journal article, 2022)
      Aluminum sulfate shows a positive effect on preventing efflorescence of magnesium potassium phosphate (MKP) cements. Its influence on the MKP cement properties and hydration is explored in this study. Compared to a reference ...

    • The influence of calcium sulfate content on the hydration of belite-calcium sulfoaluminate cements with different clinker phase compositions 

      Mrak, Maruša; Winnefeld, Frank; Lothenbach, Barbara; Dolenec, Sabina (Peer reviewed; Journal article, 2021)
      The influence of different amounts of gypsum on the hydration of a belite-rich and a ye'elimite-rich belite-calcium sulfoaluminate clinker (BCSA) was investigated. The hydration kinetics, phase assemblages and compressive ...

    • Influence of wollastonite on hydration and properties of magnesium potassium phosphate cements 

      Xu, Biwan; Lothenbach, Barbara; Winnefeld, Frank (Journal article; Peer reviewed, 2020)

    • Reactivity tests for supplementary cementitious materials: RILEM TC 267-TRM phase 1 

      Li, Xuerun; Snellings, Ruben; Antoni, Mathieu; Alderete, Natalia Mariel; Ben Haha, Mohsen; Bishnoi, Shashank; Cizer, Özlem; Cyr, Martin; De Weerdt, Klaartje; Dhandapani, Yuvaraj; Duchesne, Josée; Haufe, Johannes; Hooton, Doug; Juenger, Maria; Kamali-Bernard, Siham; Kramar, Sabina; Marroccoli, Milena; Joseph, Aneeta Mary; Parashar, Anuj; Patapy, Cedric; Provis, John L.; Sabio, Sergio; Santhanam, Manu; Steger, Laurent; Sui, Tongbo; Telesca, Antonio; Vollpracht, Anya; Vargas, Felipe; Walkley, Brant; Winnefeld, Frank; Ye, Guang; Zajac, Maciej; Zhang, Shizhe; Scrivener, Karen L. (Journal article; Peer reviewed, 2018)
      A primary aim of RILEM TC 267-TRM: “Tests for Reactivity of Supplementary Cementitious Materials (SCMs)” is to compare and evaluate the performance of conventional and novel SCM reactivity test methods across a wide range ...

    • 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 ...