Can fibers replace wire mesh or welded wire fabric in a concrete slab on ground?
To answer this question, it is first necessary to establish why wire mesh or fibers would be used in a concrete slab. One of the main reasons is for crack control. PCA, however, states that cracks in slabs on ground can be controlled with uniform subgrade support and proper joint spacing (as a function of slab thickness). See Table 6-3 from PCA’s Concrete Floors on Ground (EB075). Table 6-3.
