Page 190 - Handbook of Adhesion Promoters

9.6 Ceramic tiles 183

Figure 9.1. PVAl mortar/vinyl active surface interaction model. [Adapted, by permission, from Mansur, AAP;
Mansur, HS, Cement Concrete Compos., 33, 742-8, 2011.]
9.6 CERAMIC TILES
The ANSI standards 118-15 and 118-11 facilitate the design of high-performance ceramic
1
tile adhesives with improved bond strength on cementitious and plywood substrates. The
investigation of properties of mortars shows that the rheology (proportion of water and
1
cement) has the strongest influence on adhesion.
Adhesion mechanisms and interfacial strengths of polyvinylalcohol-modified mortar
2
and chemically active tiles with five different silanes were studied. Hydrophilic silane
functionalities and isocyanate groups improved interfacial strength between tiles and
2
modified mortar. The silanes bearing hydrophobic functional group decreased adhesion
2
resistance (Figure 9.1). The hydrophilic silanes formed bonds with PVAl cement modi-
2
fier.
REFERENCES
1 Petit, J-Y; Comelli, B; Perrin, R; Wirquin, E, Int. J. Adh. Adh., 66, 73-80, 2016.
2 Mansur, AAP; Mansur, HS, Cement Concrete Compos., 33, 742-8, 2011.