Abstract
The aim of this work is to produce blocks for hydraulical structure in concrete using alkali activated slag (AAS) as cement, granulated slag of blast furnace as fine aggregate and air-cooled blast furnace slag as coarse aggregate. Literature was consulted in order to select the shape and geometry to build the hydraulic structure. Mechanical, physical and durability concrete properties are investigated such as flexural strength, tense splitting strength, absorption of water by capillary forces water, absorption and percentage of voids. Blocks had stayed in marine environment during one year for evaluation of the durability and counting of number of marine organisms in its surface. Mean while, samples were immersed in a tank simulating marine environment where the water pH was monitored. The shape of the block was named as hydrus, and it meets the design requirements. The evaluation of the properties of the concrete show better results, or equivalent, for the-alkali activated slag concrete, in comparison to the reference concrete. The classification and counting of marine organisms in the surface of the blocks and the evidence of the quality of the water indicate that
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