FIBERGLASS FABRICS, NETS AND TAPES HOME PRODUCTS APPLICATIONS COMPANY ENVIRONMENT WHERE WE ARE CONTACTS Anti-crack HD - Fiber Glass Alkali glass fibers - resistant for mortars and concretes Download catalog AR (Alkali Resistant) glass cut wires are used as reinforcing elements for concrete and components of cement-based products in more than 120 countries worldwide since their launch in 1970. This type of glass cut wire is widely used in the production of prefabricated fiber-reinforced elements of the GRC type (Glass Fiber Reinforced Concrete). The continuous evolution of Anti-Crak® cut wires and the characteristics of its product range guarantee their use and performance in the production of mortars and concretes for industrial and civil floors, prefabricated elements in reinforced concrete, plasters and self-leveling screeds. WHY USE CUT GLASS WIRES? The total affinity with the cementitious matrix, the high tensile strength and the elastic modulus make the AR glass cut wires efficient during the cracking process. Furthermore, since the density of the cut glass threads is comparable to that of concrete, a rapid dispersion of the same is obtained during mixing, drastically reducing the formation of air and obtaining excellent workability of the mixture to be made. PRODUCT APPLICATION FIELDS Anti-Crak® HD glass cut strands have been developed to meet high performance requirements, especially to prevent shrinkage cracking. Anti-Crak® HD is a monofilament product made up of over 200 million filaments per kg. The high modulus of elasticity (72 GPa) and the excellent bond established inside the cement matrix make this type of yarn the ideal reinforcement. for concrete and technical mortars. Thanks to the characteristics of density and specific weight of the wires similar to those of the aggregates used in concrete, there are no problems of fluctuation or sinking for any mixture made (designed mix design), obtaining a homogeneous dispersion in the cement network. PLASTIC SHRINKAGE CRACKING Resistance to plastic shrinkage cracking requires a deeply rooted bond to the cement matrix. HD yarns are highly effective according to the American standard ASTM C 1579 thanks to the peculiarity of being composed of more than 200 million filaments per kg (diameter of 14 μm). Anti-Crak® HD yarns are successfully used for the prevention of plastic shrinkage cracking in many building applications such as commercial, industrial, residential floors (traditional slabs or self-leveling screeds) and cycle paths. It is possible to combine HD threads with traditional structural reinforcements (metal or glass fiber mesh) or create a mix of various types of glass threads. GAVAZZI TESSUTI TECNICI SpA (Sole Shareholder) | Tax Code / VAT number IT 02672970130 | Via Gavazzi 3, 23801 Calolziocorte (LC) - Italy | Tel. +39 0341 641.051 | Fax +39 0341 633.004