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Mapegrid G 220

Alkali-Resistant, Glass Fiber Mesh for Structural Strengthening of Masonry

Mapegrid G 220 is a square mesh made from primed, alkali-resistant (AR) glass fibers with a zirconium dioxide content of more than 16%. When applied on masonry structures, Mapegrid G 220 makes up for their lack of tensile strength and increases their overall ductility so that stresses are distributed more evenly.

The system adheres perfectly to the substrate and its mechanical properties are such that localized stresses always provoke a failure in the substrate rather than at the substrate/strengthening system interface. In the case of strengthening applied to arched or vaulted elements, the masonry acquires the ability to resist tensile loads and inhibit the formation of plastic hinge points on the side opposite to where the strengthening package is applied.