APPLICATION PROCEDURES
- Remove the mortar from the joints to a depth > 3 cm.
- Dedust the joint surfaces by washing with low pressure water.
- Put on the scarified joint an adhesive latex primer, multifunctional, in a light colored viscous solution, based on acrylic polymers in aqueous dispersion, coalescing promoters, deaerating agents and special superpozzolanic reaction fillers, BOND HG, pure or diluted in water 1:1 (depending on the absorption of the substrate).
- Reinforcing the mortar joints on existing wall faces, by anchoring HELIX STEEL AISI 304 helical bars in stainless steel with UNISAN (*) composite mortar, fiber-reinforced with double type of READYMESH fibers (glass and polypropylene), dehumidifying, with very high breathability, class R (restoration according to UNI EN 998/1), based on hydraulic binders with a low content of soluble salts, with mechanical resistance in class R2 (according to UNI EN 1504/3), reaction to fire class A1 (EN 13501-1), permeability to water vapor 11 μ (UNI EN 1015-19), compressive strength after 28 days > 20 N/mm² (UNI EN 12190), flexural strength after 28 days > 5MPa (UNI EN 12190) elastic modulus 11 GPa (EN 13412), maximum particle size of the aggregate 1.5 mm.
- Insert at least a couple of cm of UNISAN mortar into the scarified joint (*); with the mortar still fresh, introduce the helical stainless steel bar, diameter 6, 8, 10 or 12 mm in the joint, depending on the size of the joint and the need for reinforcement, taking care to incorporate it into the still fresh mortar; complete the incorporation of the mortar and the filling of the joint with a final grouting performed fresh on fresh with UNISAN mortar (*); mortar consumption of 1.5 kg for each dm³ of joint volume
* as an alternative to UNISAN mortar, the super adhesive RASOCOAT mortar can be used, based on hydraulic binders, water-dispersible resins, silico/limestone aggregates and specific agents. Main technical characteristics of RASOCOAT mortar : Adhesion bond (UNI EN 1015-12): > 1.5 N/mm²_ Density: 1.90 kg/l _ Compressive strength after 28 days (UNI EN 1015-11): > 20 MPa _ Flexural strength after 28 days (UNI EN 1015-11): > 6 MPa
Application stratigraphy
- Application of BOND HG primer in the scarified joint
- Insertion of “helical bar” drowned with UNISAN mortar
- Re-styling of the joint with UNISAN mortar
SYSTEM COMPONENTS
Helix Steel AISI 304
Cold-drawn AISI 304 stainless steel helical bar with high mechanical performance, for reinforced repointing of joints and for connections, including through-connections, in masonry, reinforced concrete, arches and vaults. Suitable for strengthening structures in seismic areas; advantageous in combination with hydraulic binders (cement and hydraulic lime) and resin-based binders, it particularly facilitates the achievement of the required physical and mechanical performance when combined with Unisan mortar, the REPAR and GROUT product ranges, and the SYNTECH range of structural resins. The optional Connector Steel Aisi 304 accessory, supplied separately on request, enables the connection between a through helical bar and a helical bar positioned deep within the raked-out joint.
Helix Steel AISI 304
Cold-drawn AISI 304 stainless steel helical bar with high mechanical performance, for reinforced repointing of joints and for connections, including through-connections, in masonry, reinforced concrete, arches and vaults. Suitable for strengthening structures in seismic areas; advantageous in combination with hydraulic binders (cement and hydraulic lime) and resin-based binders, it particularly facilitates the achievement of the required physical and mechanical performance when combined with Unisan mortar, the REPAR and GROUT product ranges, and the SYNTECH range of structural resins. The optional Connector Steel Aisi 304 accessory, supplied separately on request, enables the connection between a through helical bar and a helical bar positioned deep within the raked-out joint.
Bond HG
Multifunctional bonding and adhesive latex in a light pink, viscous solution, based on a special elastomer in aqueous dispersion, coalescing agents, deaerating agents and fillers with a superpozzolanic reaction. Bond HG is a multifunctional, reactive, flexibilising and waterproofing compound for preparing bonding primers, bonding slurries and waterproofing coatings, as well as for improving the adhesion, bond strength, deformability, watertightness and performance of mortars, renders, fine concretes and concrete.
Bond HG
Multifunctional bonding and adhesive latex in a light pink, viscous solution, based on a special elastomer in aqueous dispersion, coalescing agents, deaerating agents and fillers with a superpozzolanic reaction. Bond HG is a multifunctional, reactive, flexibilising and waterproofing compound for preparing bonding primers, bonding slurries and waterproofing coatings, as well as for improving the adhesion, bond strength, deformability, watertightness and performance of mortars, renders, fine concretes and concrete.
Unisan
Composite, fiber-reinforced, consolidating mortar with low liquid water absorption, used for the structural rehabilitation of deteriorated historic or monumental masonry. It contains no substances potentially harmful to masonry and is composed of hydraulic binders free from soluble salts, pozzolanic silica, selected siliceous-calcareous aggregates, specific shrinkage-reducing agents, and alkali-resistant READYMESH fibers, which provide high flexural tensile strength and increase the mortar’s fracture energy. Ideal for the structural rehabilitation of historic brick, stone or mixed masonry, used in combination with ARMAGLASS STRUCTURA glass-fiber meshes.
Unisan
Composite, fiber-reinforced, consolidating mortar with low liquid water absorption, used for the structural rehabilitation of deteriorated historic or monumental masonry. It contains no substances potentially harmful to masonry and is composed of hydraulic binders free from soluble salts, pozzolanic silica, selected siliceous-calcareous aggregates, specific shrinkage-reducing agents, and alkali-resistant READYMESH fibers, which provide high flexural tensile strength and increase the mortar’s fracture energy. Ideal for the structural rehabilitation of historic brick, stone or mixed masonry, used in combination with ARMAGLASS STRUCTURA glass-fiber meshes.