Title: Industrial Slab-on-Ground Surface Defects

Author(s): by Arthur W. McKinney and Joseph F. Neuber Jr.

Publication: Concrete International

Volume: 35

Issue: 7

Appears on pages(s): 29-34

Keywords: shading, concrete, paste, cracking, finishing

DOI:

Date: 7/1/2013

Abstract:
Aggregate shading is a mottling of trowel-finished concrete associated with coarse aggregate particles near the slab surface. Normally, it’s an aesthetic problem that doesn’t affect the performance of an industrial slab-on-ground. However, it can be also associated with flaking of the mortar layer above coarse aggregate particles. The authors discuss a number of factors that could contribute to such flaking and list possible actions for avoiding the problem.