The Architecture Puzzler
Created by Dave Guadagni
Solution to Last Week's Puzzler
Architecture Puzzler #72
Most commercially produced adobe bricks are "stabilized" by adding asphalt emulsion (3 to 5 percent by weight) or Portland cement (5 to 10 percent). These coat the clay particles and reduce their tendency to absorb water and expand. Occasionally (and traditionally) straw is added — why?
Straw is said to increase the brick's tensile strength and reduce shrinkage cracking during curing.
Dave Guadagni, AIA, is an architect with Robertson/Sherwood/Architects
Quizzical Pursuit is Copyright 2001, Dave Guadagni.
Nineteenth century Egyptian adobe brick construction.