Title: Evaluation and Minimization of Bruising (Microcracking) in Concrete Repair (364. 7T)

Author(s): Sprinkel

Publication: Web Session

Volume: ws_S22_Sprinkel.pdf

Issue:

Appears on pages(s):

Keywords:

DOI:

Date: 3/28/2022

Abstract:
Bruising (microcracking) is commonly induced in a concrete substrate during the concrete removal or surface preparation process and is detrimental to the bond between the repair material and the substrate. One may ask: “what is bruising”, as this term is not commonly encountered in construction. Nevertheless, preventing or minimizing bruising and its effect on bond is an important requirement for a successful repair. This session explains what “bruising” is and focuses on concrete removal techniques and how they damage surfaces, adversely affecting the bond to repair materials, shortening the life of a repair. Procedures are presented to avoid and overcome bruising to a prepared surface.