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@ARTICLE{Ferrand:897342,
      author       = {Ferrand, Karine and Klinkenberg, Martina and Caes,
                      Sébastien and Poonoosamy, Jenna and Van Renterghem, Wouter
                      and Barthel, Juri and Lemmens, Karel and Bosbach, Dirk and
                      Brandt, Felix},
      title        = {{D}issolution {K}inetics of {I}nternational {S}imple
                      {G}lass and {F}ormation of {S}econdary {P}hases at {V}ery
                      {H}igh {S}urface {A}rea to {S}olution {R}atio in {Y}oung
                      {C}ement {W}ater},
      journal      = {Materials},
      volume       = {14},
      number       = {5},
      issn         = {1996-1944},
      address      = {Basel},
      publisher    = {MDPI},
      reportid     = {FZJ-2021-03742},
      pages        = {1254 -},
      year         = {2021},
      abstract     = {Static dissolution experiments were carried out with the
                      reference International Simple Glass under hyperalkaline pH
                      at 70 °C and very high SA/V ratio. Three aspects of glass
                      dissolution behavior were investigated, (1) the rate drop
                      regime and the residual rate (stage II), (2) the formation
                      of secondary phases including thermodynamic aspects, and (3)
                      the microstructure of the interface of altered glass and
                      secondary phases. A very low residual rate of 6 × 10−6
                      g/m2d was determined based on boron release, which was
                      several orders of magnitude lower than the initial rate
                      established between the start of the experiments and the
                      first sampling on day 59. The presence of a porous layer
                      with a thickness varying between 80 nm and 250 nm and a pore
                      size between 10 nm and 50 nm was observed. CSH phases with a
                      low Ca/Si ratio of 0.3–0.4 and zeolites were also visible
                      at the surface of the altered glass grains, but no glass
                      alteration resumption occurred, probably due to an important
                      pH decrease already at day 59. Thermodynamic calculations
                      assuming congruent glass dissolution and precipitation of
                      the dissolved aqueous species confirmed the precipitation of
                      CSH phases and zeolites},
      cin          = {ER-C-2 / IEK-6},
      ddc          = {600},
      cid          = {I:(DE-Juel1)ER-C-2-20170209 / I:(DE-Juel1)IEK-6-20101013},
      pnm          = {5353 - Understanding the Structural and Functional Behavior
                      of Solid State Systems (POF4-535) / 1411 - Nuclear Waste
                      Disposal (POF4-141)},
      pid          = {G:(DE-HGF)POF4-5353 / G:(DE-HGF)POF4-1411},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {33800843},
      UT           = {WOS:000628377300001},
      doi          = {10.3390/ma14051254},
      url          = {https://juser.fz-juelich.de/record/897342},
}