Lithium, Potassium and Sodium Additions to Cement Pastes.
Lithium, Potassium and Sodium Additions to Cement
Pastes.
(1032 K)
Bentz, D. P.
Adances in Cement Research, Vol. 18, No. 2, 65-70,
2006.
Keywords:
cement pastes; lithium; potassium; sodium; additives;
hydration; calorimetry; ignition measurements; low
temperature; alkalis
Abstract:
In the present study the influence of three alkali
cations, namely lithium, potassium and sodium, on the
hydration rates and the developing capillary pore
structures of hydrating cement pastes was investigated.
A quantitative examination of these effects was obtained
by applying a set of experimental techniques that
included isothermal calorimetry, loss-on-ignition
measurements and low temperature calorimetry. Low
temperature calorimetry was used specifically to assess
the percolation (connectivity) of pore networks with
various size entryways. Differences amongst the
influences of the alkalis are highlighted and discussed
in terms of their intrinsic atomic characteristics.
