Szukana fraza: [Abstract = "To assess the sulfatic attacks, the described concrete types underwent two aging protocols\: 1\) a complete immersion in 12.5 % Sodium Sulfate \(Na2SO4\) solution, and 2\) an accelerated aging protocol consisting of immersion\/drying in the same sulfate solution at a temperature of 60 degress C. The results show that concrete reinforced with 0.25% of hemp fibers is the optimal amount compared to control concretes in terms of physico\-mechanical performance and durability under sulfate attack. This number of fibers could enable the production of green and durable structural concretes based on untreated hemp fibers."]

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