Concrete Slab Surface Defects – Causes, Prevention and Repair

Full Description

It is to the credit of concrete that so few complaints are received
on the vast amount of construction put in place. While it is easy
to determine the properties of the hardened concrete that will be
suitable for the intended purpose, great care is required through-
out the entire construction process to ensure that the hardened
concrete actually has the desired properties. When a blemish
appears on the surface of a concrete slab it will likely be one of
these: blisters, cracking, crazing, curling, delamination, discol-
oration, dusting, efflorescence, low spots, popouts, scaling, or
spalling. These deficiencies, caused by specific factors that are
explained in the following paragraphs, can be minimized or pre-
vented by adhering to proper construction methods.