Evaluation of the Adhesion between Overlays and Substrates in Concrete Floors: Literature Survey, Recent Non-Destructive and Semi-Destructive Testing Methods, and Research Gaps

Abstract

Non-destructive testing (NDT) and semi-destructive testing (SDT) have recently been more frequently used for the evaluation and condition assessment of concrete floors in various types of buildings. The subject of the article is to briefly introduce the reader to the problem of adhesion between overlays and substrates in concrete floors and to illustrate the current state of knowledge on the subject. The aim of this paper was to briefly describe the recently used non-destructive and semi-destructive testing methods and the parameters useful for characterizing the adhesion between overlays and substrates in concrete floors, as well as the methods useful to characterize the functional properties of the overlays. A recent literature survey, related to the adhesion between the overlays and substrates in concrete floors, is thus shown. Special emphasis was placed on the critical review of the current research results. Based on the analysis of the literature review, research gaps have been presented in order to highlight future research directions.

Non-Destructive Testing Methods as a Main Tool Supporting Effective Waste Management in Construction Processes

“…The presented set of methods contain an important scientific achievements which have been popularized, however, attention should be paid also to the further development of non-destructive testing, towards new tools and methodological approaches, e.g. [41], [42].…”

Methodology for Controlling the Technological Process of Executing Floors Made of Cement-Based Materials

“…The subsurface tensile strength and abrasion resistance should also be controlled, which depends on the compressive strength in the upper zone of the floor. This upper zone of the floor is, after all, subjected to direct operational effects, and therefore maintaining an adequate compressive strength and subsurface tensile strength in this particular zone is very important for durability and safety of use [14][15][16][17]. This is very important when the floor is the final finishing layer.…”

“…Materials 2020, 13, x FOR PEER REVIEW 2 of 13 compressive strength and subsurface tensile strength in this particular zone is very important for durability and safety of use [14][15][16][17]. This is very important when the floor is the final finishing layer.…”

The Effect of the Addition of Polypropylene Fibers to Primer on the Pull-Off Strength of Epoxy Resin Coatings

“…After hardening, it usually becomes a colorless protective film. Wang et al [ 9 ] and Szymanowski [ 10 ] highlighted the strong relation between the protective properties of coatings and overlays and the loss of adhesion as a function of aging processes and durability. Won et al [ 11 ] stated that long-term exposure to water affects the adhesion between the epoxy resin coating and the concrete substrate.…”