-
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)...
- 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...
-
ultimate reaction with
portlandite,
because they are
continuously regenerated from the
cation exchange reaction with
portlandite. As a consequence, they...
-
constants pKa and pKb Petch, H. E. (1961). "The
hydrogen positions in
portlandite, Ca(OH)2, as
indicated by the
electron distribution". Acta Crystallographica...
- the Na2Oeq
content of cement) also
contributes to the
carbonation of
portlandite by
atmospheric CO2 in
concrete although the rate of
propagation of the...
- alkali–aggregate
reaction (AAR) is also
known as alkali–carbonate reaction.
Portlandite –
calcium hydroxyde: Ca(OH) 2 Patnaik,
Pradyot (2003).
Handbook of inorganic...
-
reaction stands a
simple acid-base
reaction between calcium hydroxide (as
Portlandite) and
silicic acid.
Ancient Roman use as
underwater cement Caesarea Maritima...
- and
portlandite (Ca(OH)2)
according to the reaction: 2 Ca 2 SiO 4 ⏟
Belite + 4 H 2 O ⏟
Water ⟶ 3 CaO ⋅ 2 SiO 2 ⋅ 3 H 2 O + Ca ( OH ) 2 ⏟
Portlandite {\displaystyle...
-
chemical environment provided by the
alkali reserve (KOH, NaOH) and the
portlandite (calcium hydroxide)
contained in the
hardened cement paste causes a p****ivating...
-
concrete from its
external surface, they
react with
calcium hydroxide (
portlandite, Ca(OH)2) and the pH of the
concrete pore
water progressively decreases...
