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Portlandite is a hydroxide-bearing
mineral typically included in the
oxide mineral class. It is the
naturally occurring form of
calcium hydroxide (Ca(OH)2)...
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constants pKa and pKb Petch, H. E. (1961). "The
hydrogen positions in
portlandite, Ca(OH)2, as
indicated by the
electron distribution". Acta Crystallographica...
- pyrometamorphic, and is
unstable in
moist air,
quickly turning into
portlandite (Ca(OH)2). Haynes,
William M., ed. (2011). CRC
Handbook of Chemistry...
- also, 2 OH− → O2− + H2O For
portlandite this
gives thus the
following m**** balance: Ca(OH)2 → CaO + H2O Thus
portlandite can be
written as CaO · H2O or...
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brucite like
calcium silicate hydrate, (C-S-H)
phases formed along with
portlandite (Ca(OH)2) in
hardened Portland cement paste after the
hydration of belite...
- of
Portland cement and
takes part in the
pozzolanic reaction with the
portlandite formed in the
hydration of the main
cement minerals (e.g. alite). Metakaolin...
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ultimate reaction with
portlandite,
because they are
continuously regenerated from the
cation exchange reaction with
portlandite. As a consequence, they...
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produce several other compounds. Thus,
these limes contain inclusions of
portlandite, brucite, magnesite, and
other magnesium hydroxycarbonate compounds....
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Dissolved 1784; 241
years ago (1784) Preceded by
Pittites Merged into
Portlandites Headquarters Northamptonshire Ideology Conservatism Parliamentarism Political position...
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temperature increases (ΔH < 0). This is also the case for
calcium hydroxide (
portlandite),
whose solubility at 70 °C is
about half of its
value at 25 °C. The...
