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Improved concrete properties to resist the saline water using environmental by-product

机译：使用环境副产物改善混凝土性能以抵抗盐水

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This paper investigates the influence of using environmental by-product materials (silica fume and fly ash) in concrete on the chloride ion permeability of concrete. Nine concrete mixtures were designed to have the same degree of workability and air content with water/cementitious material ratio of 0.4. The studied parameters include the main fresh and hardened concrete properties such as slump, air content, unit weight, compressive strength, tensile strength, flexural strength, static Young's modulus, and dynamic elastic modulus. Concrete samples were kept in water for 28 days, then immersed in artificial sea water for 5 months. The total and soluble chloride contents were measured through the concrete using the potentiometric titration analysis. The obtained test results indicated that the use of ternary systems in concrete improved the different characteristics of the product concrete and showed a significant resistance to chloride penetration. The weights of chloride in mix 9 (10% silica fume and 25% fly ash) at depths from the concrete surface to 30mm were less than the weights of control mix 1 (100% ordinary Portland cement) by about 60%. Further, the ternary systems can be used in concrete industry with considerable proportions.
机译：本文研究了在混凝土中使用环境副产品（硅粉和粉煤灰）对混凝土氯离子渗透性的影响。设计了九种混凝土混合物，它们具有相同程度的可加工性和空气含量，水/胶凝材料之比为0.4。研究的参数包括主要的新鲜和硬化混凝土性能，例如坍落度，空气含量，单位重量，抗压强度，抗张强度，抗弯强度，静态杨氏模量和动态弹性模量。将混凝土样品在水中放置28天，然后在人造海水中浸泡5个月。使用电位滴定分析法测量混凝土中的总氯和可溶性氯含量。获得的测试结果表明，在混凝土中使用三元体系改善了产品混凝土的不同特性，并显示出显着的抗氯离子渗透性。混合物9（10％的硅灰和25％的粉煤灰）中从混凝土表面到30mm深度的氯化物的重量比对照混合物1（100％的普通硅酸盐水泥）的重量小约60％。此外，三元体系可以相当大的比例用于混凝土工业。

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