CONSOLIDATING HISTORIC PAVEMENTS
In cities and small towns, squares, and more generally main streets, are the most important gathering areas. These places are often beautiful and charming environments, framed by valuable buildings and palaces, whose conservation demands great care and respect in terms of materials and methods of construction used.
A very critical element for conservation is the occurrence of mechanical stress acting on historic road surfaces. Heavy strains from urban traffic and from temporary or permanent concentrated loads owed to heavy vehicles passing or stopping during markets, fairs and festivals, concerts, etc., can cause historic pavements to sink and rut, the road plane to deform and, as a consequence, trigger damage to people and objects.
Also, because streets and squares are used to accommodate underground services, any consequent alterations of the layers composing the road may cause the surface to sink or become dangerously bumpy. Therefore the need arises to obtain an efficient durable reinforcement, compatible with the conservation of the historic value of the pavement and capable of guaranteeing a plane, regular surface.
The FRCM (Fiber Reinforced Cementitious Matrix) system developed by Fibre Net uses the “reinforced slab” method, where GFRP meshes are combined with lime or concrete-based mortars to obtain a reinforced pavement characterized by great mechanical properties, chemical compatibility and radio-transparency, which proves particularly helpful during inspections of underground services.
REINFORCED SLAB METHOD
Historic pavements are often composed of different layers made with all sorts of materials, generally featuring poor mechanical properties. The excavations and subsequent repairs during infrastructural works aimed at burying services under streets and squares contribute to weakening the bulk of road layers. Further degradation results from permanent or temporary concentrated loads, which cause the pavement to sink or rut, and threaten the safety of people and cause damage to vehicles.
Making a lime or concrete slab reinforced with preformed GFRP meshes helps obtain a sturdy and mechanically strong foundation to hold the top surface, be it made with old stones or with new materials. Using a reinforced slab guarantees better load distribution, prevents rutting and sinking, and ensures durability and efficiency of works. Unlike metallic meshes, GFRP products are radiotransparent and will not interfere with any electronic equipment upon inspections of underground services.
• LIGHTWEIGHT BUT HIGHLY RESISTANT
• CORROSION-PROOF AND COMPATIBLE WITH DIFFERENT TYPES OF MORTARS (LIME, CONCRETE, POZZOLAN BASED, ETC.)
• REDUCED WEIGHT AND THICKNESS
• EFFICIENT AND DURABLE CONSOLIDATION
• DIFFUSED AND HOMOGENEOUS MECHANICAL IMPROVEMENT
• NO INTERFERENCE WITH ELECTRONIC EQUIPMENT
• SIMPLE AND RAPID INSTALLATION
• REDUCED HANDLING, INSTALLATION TIME AND COST