Full list of Nuggets
Generally, it is not a good idea to add extra water to ready-mixed concrete once it has arrived on site.
However, under certain circumstances, it may be permissible for water to be added to a load of stiff ready-mixed concrete in order to achieve the specified consistence class.
This is in accordance with BS 8500 and applies when:
Acknowledgement: the concrete Society
Concrete Bookshop - Members receive 40% discount on Concrete Society publications