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首页> 外文期刊>American journal of applied sciences >EFFECT OF USING STEEL SLAG AGGREGATE ON MECHANICAL PROPERTIES OF CONCRETE
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EFFECT OF USING STEEL SLAG AGGREGATE ON MECHANICAL PROPERTIES OF CONCRETE

机译：钢渣掺合料对混凝土力学性能的影响

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摘要

This study presents an evaluation of the physical and mechanical properties and characteristics of steel slag aggregate concrete in comparison with the typical crushed limestone stone aggregate concrete. Hardened concrete consist of more than 70% aggregate due to the high demand in building construction and the increase of the amount of disposed waste material, suppliers and researchers are exploring the use of alternative materials which could preserve natural sources and save the environment. In this study, steel slag was used as an aggregate replacement in conventional concrete mixes. Steel slag which is mainly consists of calcium carbonate is produced as a by-product during the oxidation process in steel industry. Steel slag was selected due to its characteristics, which are almost similar to conventional aggregates and the fact that it is easily obtainable as a by-product of the steel industry. As a result, utilization of steel slag will save natural resources and clean environment. Furthermore, results have shown that slag aggregate has better abrasion factor and impact value than conventional aggregate. Thorough investigation of the results have indicated that the amount of increase in compressive strength at age of 7 days are much more than that of age 28 days for all types of aggregate replacement. This indicates that the added slag could work as accelerator at early age while at 28 days age, the effect is reduced. The fine slag replacement scores the highest effect.
机译：本研究与典型的石灰石碎石骨料混凝土相比，对钢渣骨料混凝土的物理机械性能和特性进行了评估。由于建筑施工的高要求和可弃置废物的数量增加，硬化混凝土的骨料含量超过70％，供应商和研究人员正在探索使用替代材料来保护自然资源和保护环境。在这项研究中，钢渣被用作传统混凝土混合物中的骨料替代品。主要由碳酸钙组成的钢渣是钢铁行业氧化过程中的副产品。选择钢渣的原因是它的特性与传统的骨料几乎相似，并且很容易将其作为钢铁行业的副产品而获得。结果，钢渣的利用将节省自然资源和清洁环境。此外，结果表明，炉渣骨料比常规骨料具有更好的磨损因子和冲击值。对结果的透彻研究表明，对于所有类型的骨料替代物，7天龄时抗压强度的增加量远远大于28天龄时抗压强度的增加量。这表明所添加的炉渣可以在早期起到加速剂的作用，而在28天龄时，效果会降低。细渣替代效果最高。

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