NHL 5 Eminently Hydraulic lime is used for applications such as
building or repairing wall head copings, pointing and parging the
water table or foundation of a building and making lime concrete.
Sea-bearing walls can be built and repaired with NHL 5 since it has
only trace amounts of soluble salts such as Potassium Oxide, Sodium
Oxide and tri-calcium aluminates. This diminishes sulphate attack
which normally happens in mortars prepared with Portland cement or
where white cement has been introduced into synthetically created
hydraulic lime at the time of manufacturing to ensure a hydraulic
set. When Portland cement is present, you will find a high percentage
of tri-calcium aluminates which will react with the sulphates thus
producing an overall expansion and the eventual disintegration of
the mortar or concrete especially in marine environments.