Argical M-1000 is a reactive pozzolan used to achieve a hydraulic set in traditional lime mortar.
Using a pozzolan is beneficial when using lime putty mixes in damp, frost prone or exposed locations. Adding Argical to lime mixes increases compressive strength, therefore offering additional protection during the slow carbonation period.
Historically, volcanic ash, brick dust and other forms of burnt clay were used as pozzolanic additives in lime mixes. Argical M-1000 is a metakaolin which we use today to have the same effect.
The term ‘pozzolan’ originates from the Italian city of Pozzuoli where volcanic ash was added during Roman times.
Add between 10% – 20% by volume depending on the time of year, exposure and use.
Ask one of our technical sales team for further advice.