Civil Engineering Reference
In-Depth Information
Prompt Natural Cement is mixed with citric acid to extend its work-
ing time.
Pozzolans and formulated limes
Throughout history, wherever hydraulic limes were not available, people have added a
range of other substances to air limes that react with the calcium in the presence of water
to give the mortar or render a degree of hydraulic set, where this was desirable or neces-
sary. The properties of such 'pozzolans' or 'pozzolanic additives' were probably originally
discovered by accident, perhaps through the inclusion of swept-up waste materials on a
building site into the mix for a mortar.
Search WWH ::
Custom Search