Structural plasters

Slabs reinforced with glass or steel mesh and specific  mortars for the restoration and consolidation of concrete and masonry structures

Production of a masonry element

There is no specific regulatory references for calculating the increased resistance of a masonry element after applying a special plaster reinforced with a mesh, but in some national technical construction standards (such as the Italian NTCs), it is recommended that a containment mesh be inserted in the consolidating plaster and the plaster be regarded as “structural plaster”.
In case of masonry walls and partitions, key parameters in the design of the structural plaster are the thickness and the mechanical characteristics of the cement-based mortar in addition to the material used for the reinforcing mesh.
In order to create a reinforced slab placed on one or both sides of the masonry divisioning wall, it is possible to use meshes of different nature, texture and weight. Glass, steel and basalt meshes are available in Ruregold range.

The structural plaster can be positioned on one or both sides of the vertical elements to be upgraded. Based on design, pass-through systems may be installed to ensure the adhesion of the structural plaster to the vertical element. Ruegold has connectors of various kinds in a flexible or semi-rigid “cord”.

For structural strengthening, especially with respect to horizontal actions (earthquakes), FRCM (Fiber Reinforced Cementitious Matrix) technologies based on carbon or PBO fiber are preferable to structural plaster.

As an alternative to the structural plaster with a mesh, it is possible to use a structural mortar such as MX-PVA Fibre-reinforced with polyvinylalcohol fibers which create a three-dimensional reinforcement inside the matrix. This type of structural plaster does not need the use of connectors.

Consolidating plaster with fiberglass mesh

  • Apply a rough coat of MX-CP Lime at approximately 3/16 in. (0.5 cm) thickness so as to prepare the surface.
  • If required, drill of the support for the installation of the connectors. In case of cord connectors, proceed to grout them with the suitable mortar, MX-C Joint.
  • Apply the first layer of MX-CP Lime or MX-RW High Performances structural mortar with a trowel or by spray.
  • Apply a sheet of G-Mesh (fiberglass) over the entire surface. Overlap the mesh on both sides to ensure continuity.
  • Spread the final layer of mortar with a trowel or spray, making sure to properly incorporate the reinforcement mesh.
  • Open, spread out the connectors, fiber glass-based G-Joint, and anchor them with the specific mortar, MX-C Joint.
  • Apply the finishing layer of mortar with a suitable thickness.

Consolidating plaster with steel mesh sheets

  • Apply a rough coat MX-CP Lime at approximately 3/16 in. (0.5 cm thickness so as to prepare the surface.
  • If required, drill the support, insert anchor rods C-BAR and proceed to grout them with the suitable mortar MX-C Bar.
  • Apply the first layer of MX-CP Lime or MX-RW High Performances structural mortar with a trowel or by spray.
  • Apply a sheet of Stucanet SN or Armanet steel mesh over the entire surface. Overlap the mesh on both sides to ensure continuity.
  • Insert the selected connectors and the anchor rods.
  • Spread the final layer of mortar with a trowel or by spray, making sure to properly encapsulate both the reinforcing mesh and the connectors.
  • Apply the finishing layer of mortar with a suitable thickness.

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Structural Plasters