Mortar Bond Strength: A Brief Literature Review, Tests for Analysis, New Research Needs and Initial Experiments

Despite technological advances in the production processes of the materials for ceramic façade coatings, the problems of detachments are still frequent. Therefore, this work aims to investigate, through a literature review, the existing gaps related to the adhesion ability of adhesive mortars, ident...

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Bibliographic Details
Published in:	Materials 2022-03, Vol.15 (6), p.2332
Main Authors:	Salustio, Janaina, Torres, Sandro M, Melo, Anne C, Silva, Ângelo J Costa E, Azevedo, António C, Tavares, Jennef C, Leal, Matheus S, Delgado, João M P Q
Format:	Article
Language:	eng
Subjects:	Adhesion adhesive Adhesives Bond strength Bonding strength Ceramic coatings Crack propagation cyclic stresses Dynamic stress measurement elastic energy Energy dissipation experimental campaign Failure Interfaces Laboratories Literature reviews Mortars (material) Protective coatings Shear strength Shear stress slots
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Summary:	Despite technological advances in the production processes of the materials for ceramic façade coatings, the problems of detachments are still frequent. Therefore, this work aims to investigate, through a literature review, the existing gaps related to the adhesion ability of adhesive mortars, identifying new research needs that can better explain the behavior of the material. In addition, an experimental procedure was developed to evaluate the mechanical capacity of adhesive mortars when subjected to cyclic stresses. Dynamic stress measurements are presented for several blocks of mortar and on similar blocks but with a slot drilled prior to measurements (intended to represent failure). From these data we calculated values of stress energy, elastic energy, and dissipated energy. The experimental results showed that the energy involved in the test process accompanied the load values and current stress values. The mortar samples with the previous failure absorbed and dissipated less energy than mortars without failure, showing that materials that have less energy to dissipate, are materials that have developed less capacity to adhere, that is, to keep their parts together.
ISSN:	1996-1944 1996-1944