A Concrete Fact
Spring/Summer 1990
| Volume 6
| Issue 1
I am very impressed with Invention & Technology . Congratulations on an outstanding piece of technical journalism.
I discovered one inaccuracy that should be brought to your readers’ attention. In the excellent article “Raising Galveston” (Winter 1990), Don WaIden makes a mistake that has caused many young civil-engineering students to lose a grade in materials class. I refer to his description of concrete’s “drying.” Concrete does not dry; it cures. Placed underwater, it will harden just as in air. The process is called hydration; drying is evaporation.
As a hydraulic engineer I was otherwise very impressed with Mr. Walden’s article. Keep up the exciting work.
