The resultant material (sonicated silica fume, SSF) after upgrading shows high pozzolanic reactivity and, consequently, a significant improvement in mechanical strength that presents a notably finer particle size distribution than DSF [13]. Some authors have shared advances in composites with high pozzolan addition/substitution percentage. [PERSON] et al. [14] described the behavior of GRC with low percentages of metkaolin and silica fume, and they concluded that low percentages of pozzolan do not avoid the fiber degradation in the cementing matrix. The use of these pozzolans in high proportions is not commercially suitable because of the cost of these mineral additions. [PERSON] [15] described the good behavior of GRC containing metkaolin and acrylic resin when samples were aged in a climatic chamber and immersed in hot water. [PERSON] et al. [16] studied the natural aging (5 years) of GRC containing metakaolin (metaver) or a commercial pozzolan (Powerpozz) in a 20% addition compared to Portland cement. They found that metakaolin showed better performance in terms of fracture energy terms. [PERSON] et al. [17] reported how GRC composites without additions are notably affected by their mechanical behavior with aging due to fiber deterioration in the conventional Portland cement matrix, even at values close to those of mortars without AR fibers. They studied the behavior of GRC in which 20 and 40% of Portland cement was replaced with fly ash or ground granulated blast furnace slag. They concluded that at these replacing percentages, toughness was reduced with aging and long-term curing. Otherwise, GRC composites with up to 40% fly ash substitution confirm the benefit for composite strength due to the modification of the matrix. [PERSON] et al. [18] assessed pozzolan activity in GRC with high fly ash content, and reported that cementing matrices have lower calcium hydroxide contents, which confer the fibers greater chemical stability. [PERSON] et al. [19] studied matrices with supplementary cementing materials (blast furnace slag, fly ash, and silica fume) to reduce both matrix alkalinity and calcium hydroxide content by identifying reductions in pH from 12.4 to 11.8 after 360 aging days. [PERSON] et al. [20] observed that fibers remain unchanged in composites with silica fume substitution, tensile strength improves, and damage by cutting fibers diminishes due to calcium hydroxide crystals, but flexural strength reduces with aging. [PERSON] et al. [4] studied GRC composites by replacing Portland cement with 40-60% fly ash. They obtained lower flexural strengths than the control for short curing times. For longer curing ages, flexural strength increased and calcium hydroxide content decreased with curing age. The higher substitution percentage and the greater fly ash fineness, the lower the calcium hydroxide content and the greater the strength are. Finally, the fibers are not attacked in the presence of ash. According to the application of the different elements manufactured with GRC and the environment in which they are used, they can be affected by external and internal physical or chemical agents, which can produce erosions, cracks, and expansions that can harm composite properties. When composites are exposed to the environment, physical agents such as drying processes and freeze-thaw actions can generate surface wear. Chemically aggressive environments (sulfates, chlorides, acids) affect the cementitious matrix by causing mass loss or swelling and fissuration. To date, very few studies on GRC durability in aggressive environments have been carried out. In this work, the role of ground fly ash (GFA) and sonicated silica fume (SSF), dosed at high proportions to replace Portland cement (60%), in GRC durability terms is presented, specifically on drying-wetting and freezing-thawing processes, as well as acid attacks (ammonium chloride and sulfuric acid).