Textile reinforced concrete (TRC) is produced from fine-grained cementitious matrices in combination with fabrics made of glass or carbon filaments. In most applications, these textiles are coated with polymer resins to improve stress transfer between the individual filaments. Nevertheless, uncoated reinforcements remain attractive because they offer superior recyclability and retain the pliability required for certain manufacturing methods. A persistent drawback, however, is the gradual reduction in tensile capacity of uncoated alkali-resistant (AR) glass yarns when embedded in alkaline binders. The present contribution investigates how the deterioration of such uncoated textiles can be mitigated through suitable matrix compositions. Different binder systems were compared, including Portland cement and blast furnace cement, as well as mixes modified with metakaolin and silica fume. The evaluation was carried out by means of direct tensile tests on reinforced specimens after 28 days of standard curing and after accelerated aging in hot water at 75 ℃ for periods between 3 and 28 days. The results demonstrate that the well-known strength and strain reductions of approximately 50% associated with Portland cement matrices can be significantly alleviated when pozzolanic additives such as microsilica and calcined clay are incorporated. Furthermore, mixtures in which CEM I was substituted by CEM III showed stable performance over the entire testing period due to their low effective alkali content, even in combination with uncoated AR-glass textiles.