The Architecture Puzzler
Created by Dave Guadagni
Solution to Last Week's Puzzler
Architecture Puzzler #546
Are you likely to get stronger concrete (at 28 days and later) from concrete poured during hot or cold weather?
Concrete poured during cold weather has slower strength gain (during the first few days after the pour) but usually higher ultimate strength than warm-weather concrete. This is because of the improved quality of the hardened cement paste formed more slowly under cooler conditions. Note, however, that early freezing must be prevented.
Dave Guadagni, AIA, is an architect with Robertson/Sherwood/Architects
Quizzical Pursuit is Copyright 2012, Dave Guadagni.
Lots of concrete was used in building the Yale Center for British Art in New Haven, Connecticut, designed by Louis Kahn.
Photo: Jan Martin