The first results from the field test showcased at World of Concrete this year are now available from Concrete Construction magazine. This is an ongoing effort to evaluate shrinkage and curling in a 60,000 square foot industrial floor employing a number of different mixes. Fiber reinforcement received special attention in this test conducted by Scurto Cement and Concrete Construction magazine.
It is worth mentioning that the mix with 7.5 pounds of fiber per cubic yard of concrete did not produce any normal curling to speak of. The typical pattern of raised slab edges at construction joints is clearly visible with many of the other mixed, however. All of us whose business it is to place large industrial slabs await further test results anxiously. Next to cracking, curling is probably the biggest complaint we deal with related to industrial floors, and of course, curling and cracking are related in that curling often leads to cracking and joint spalling.
We commend Scurto and Concrete Construction magazine for their efforts.
David Prizio has over 35 years experience in the fields of general contracting, concrete subcontracting, and civil engineering. He functioned in the capacity of carpenter at Prizio & Prizio while attending college. After graduating from Cal Poly, Pomona in 1975, David Prizio began working as a project manager at the firm. He was responsible for design coordination, cost estimation, construction coordination and administration of commercial general contracting projects. He consulted with clients regarding design, marketing, and financing of building and construction projects.