*Article* **Effect of Textile Characteristics on the AR-Glass Fabric Efficiency**

**Marco Carlo Rampini 1,\* , Giulio Zani <sup>1</sup> , Louis Schouler <sup>2</sup> , Matteo Colombo <sup>1</sup> and Marco di Prisco <sup>1</sup>**


**\*** Correspondence: marcocarlo.rampini@polimi.it

**Abstract:** Alkali-resistant (AR) glass textiles are used as the main reinforcement in several composite applications due to their good performance-to-cost ratio. A huge variety of textiles are already present in the market; they differ on various parameters, such as, for example, the filaments' diameters, the geometry, the type of weaving, or the nature of the impregnation coating. To orient manufacturers towards the production of efficient textiles, the most important aspect is the balance between cost and performance. In this paper, a series of different fabrics designed for textile-reinforced cementitious composites were considered. Performance was assessed by means of uniaxial tensile tests and the results are presented in terms of load vs. displacement. Then, the selected AR-glass textiles were compared in terms of fabric efficiency, targeting the effect of each parameter on the textile capacity. The research here presented is part of a comprehensive campaign aimed at the optimization of glassfabric-reinforced cementitious composites for structural retrofitting. To better discuss the different solutions tested, at the end, only considering a small number of the investigated textiles, an efficiency evaluation was carried out at the cementitious composite level.

**Keywords:** alkali-resistant glass textile; weaving; epoxy coating; filament diameters; roving fineness; fabric efficiency; textile-reinforced concrete; TRC; fabric-reinforced cementitious matrix; FRCM
