Kim Basham, PhD, PE, FACI, is president of KB Engineering. He specializes in concrete construction, troubleshooting, nondestructive testing, forensics, and repair. E-mail [email protected]; visit www.kbengllc.com.
Folds and wrinkles in concrete curing blankets become the location of water-evaporation and condensation cycles, which causes light and dark areas to form on flatwork.