Muro K SRG
Natural hydraulic lime structural mortar for inorganic-matrix composite strengthening.
Special structural mortar for thin-layer consolidation and strengthening of masonry with inorganic-matrix composite strengthening systems and steel, carbon or glass fiber meshes of suitable characteristics. It offers high mechanical performance, high workability, thixotropy, plasticity and elasticity, controlled shrinkage, a low content of water-soluble salts, no reactivity with salts in the masonry and a very low VOC content. Based on NHL 3.5 natural hydraulic lime compliant with UNI EN 459-1, pozzolanic materials and pure selected aggregates with a maximum grain size of 1.4 mm, it is ideal for strengthening, securing, consolidating and seismically upgrading existing buildings, including listed buildings.
Key features:
- contains no Portland cement;
- very low VOC content;
- class M15 according to EN 998-2;
- class CS IV according to EN 998-1;
- high bond strength and mechanical performance, without being rigid;
- adds no water-soluble salts to the masonry;
- breathable and hygroscopic, it prevents mold and condensation and regulates indoor humidity;
- reversible and compatible with historic masonry;
- fully recyclable and/or disposable as inert waste at end of life.
Muro K SRG effectively bonds steel, basalt, glass fiber and other strengthening meshes or tapes to vertical or horizontal structures (masonry, vaults, floors) to improve their resistance to static or dynamic loads, upgrade their structural behavior and improve their seismic resistance. The strengthening can be local or extensive and includes a number of point connections between the mesh and the structure, using suitable connectors as required by the design.
Muro K SRG can be applied to solid brick, mixed stone, tuff or calcarenite walls or vaults, and in general to brick, hollow-block, aerated clay block and sand-cement brick elements, etc.
Muro K SRG bonds very well and remains elastic even on smooth and/or poorly absorbent substrates such as concrete, water-repellent plasters or plasters with old paint or paste finishes, so it also works very well as a bonding scratch coat before standard, thermal or strengthening plasters.
The main applications are summarized below:
- Extensive or local strengthening reinforced with metal, glass fiber or carbon fiber meshes of a suitable type, properly connected to the wall face, on stone, tuff or brick masonry;
- Local strengthening of wall faces to prevent mechanisms in parts of the masonry under static or dynamic loads (overturning of walls, hinges forming in vaults, etc.);
- Extensive or local strengthening of the extrados of solid brick or mixed stone vaults with a reinforced topping or strengthening strips with metal, glass fiber or carbon fiber meshes properly connected to the vault;
- Jacketing of columns or strengthening of the soffit of solid brick beams;
- Reinforced solid brick ring beams;
- Bonding scratch coats on concrete, water-repellent plasters or plasters with old paint or finishes.
RALLK Muro K SRG declaration of performance
Safety data sheetsRALLK Muro K SRG safety data sheet
Technical data sheets CE marks FlyersSolution #31 - Structural strengthening with mortar jacketing on rubble stone masonry.
Solution #32 - Structural strengthening with mortar jacketing on solid brick vaults.
Solution #33 - Structural strengthening with mortar jacketing on solid brick masonry.
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