Mortar on a board has started to stiffen late in the morning. The mason asks to add water repeatedly and keep it for the afternoon. What should the foreman require?
Correct Answer
B) Follow the retempering limits and discard mortar past them
Check the mix instructions, project specification, batch age and weather limits. Retempering can restore workability lost through evaporation within permitted limits; it cannot justify keeping mortar indefinitely or using mortar that has set. Do not alter the mix by adding lime without authorization. Source: https://masonrysociety.org/Masonry%20Lab/Lab%201/Lab-1-workability.html
Why This Is the Correct Answer
Check the mix instructions, project specification, batch age and weather limits. Retempering can restore workability lost through evaporation within permitted limits; it cannot justify keeping mortar indefinitely or using mortar that has set. Do not alter the mix by adding lime without authorization. Source: https://masonrysociety.org/Masonry%20Lab/Lab%201/Lab-1-workability.html
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