Nitobond EP

"Material Conflict"

"Material Conflict" in construction is a situation where two or more interacting building materials negatively affect each other due to differences in their physical, chemical, or mechanical properties. This leads to the destruction of layers, loss of adhesion, or premature deterioration of the entire structure. For example, a chemical conflict may arise at the junction of organic and mineral materials, as the alkaline environment of concrete or moisture contained in it can react chemically with the components of the finishing coating (some types of adhesive mixtures or polymers). Or physical incompatibility, for instance, in areas of rigid adhesion of materials that differ in nature (metal and concrete, plastic and cement mortar, epoxy resins and ordinary heavy concrete). Then, when temperature or humidity changes, materials change their volume differently, meaning one expands more while the other less. Internal mechanical stresses arise at their contact point. If the adhesion is rigid, the material with lower strength cannot withstand it and begins to crack or delaminate. To avoid such problems during repairs, special barrier layers and primers are used. Such is Nitobond EP, which has a two-component epoxy composition. It acts as a buffer: neutralizes the aggressive influence of the substrate, equalizes the difference in properties, and creates a reliable, chemically resistant bonding zone for the new layer of material.