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首页> 外文会议>International Conference on Sustainable Synergies from Buildings to the Urban Scale >International Conference on Sustainable Synergies from Buildings to the Urban Scale, SBE16 Life Cycle Assessment of Concrete Products for Special Applications Containing EAF Slag
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International Conference on Sustainable Synergies from Buildings to the Urban Scale, SBE16 Life Cycle Assessment of Concrete Products for Special Applications Containing EAF Slag

机译：从建筑物到城市规模的可持续协同效应国际会议，SBE16含有EAF渣的特殊应用混凝土产品的生命周期评估

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Electric Arc Furnace (EAF) slags are steel slags that derive from the steel manufacturing process and are produced in large volumes (-10% of the steel produced) worldwide, which pose an environmental threat when disposed in landfills. Their physicochemical characteristics (high density, roughness and resistance to fragmentation) favor their use in concrete products for special applications, especially where high resistance to abrasion is required and the increase concrete density is not a problem. The special concrete applications considered in this paper were industrial pavements, heavyweight concrete and pervious concrete paving blocks and all proposed products were designed in order to perform in a similar way as reference products with ordinary concrete. Then, in order to quantify the benefits arising from the utilization of an-otherwise useless-industrial byproduct, a Life Cycle Assessment was carried out for each of the concrete products. One m3 or one m2 of concrete was selected as functional unit and a cradle-to-gate approach was followed for the LCA, including material extraction, transport and production and placement, stating the limitations and system boundaries used. Cost estimation for each of the products was also performed in order to assess their commercial viability. The results show that for industrial pavement construction concrete with EAF slag aggregates has similar environmental load and cost with the reference concrete, while in the case of pervious paving blocks the use of EAF slag aggregates reduces the environmental load by 14% at a reduced cost, and for heavyweight concrete the environmental load is reduced by 44% at a significantly lower cost.
机译：电弧炉（EAF）炉渣是钢渣，源于钢制造工艺，并在全球范围内（-10％的钢材）生产，这在填埋场造成了环境威胁。它们的物理化学特性（高密度，粗糙度和抗碎片抗性）有利于它们在混凝土产品中用于特殊应用，特别是在需要高耐磨损的情况下，增加的混凝土密度不是问题。本文考虑的特殊混凝土应用是工业路面，重量级混凝土和渗透混凝土铺路块和所有提议的产品都是设计的，以便以与普通混凝土的参考产品类似的方式进行。然后，为了量化利用AN-ALLED INDUSTION副产品的利用产生的益处，对每个混凝土产品进行生命周期评估。选择一个M3或一个M2的混凝土作为功能单元，并遵循LCA的托架到栅极方法，包括材料提取，运输和生产和放置，说明所用的限制和系统边界。还进行了每种产品的成本估计，以评估其商业活力。结果表明，对于具有EAF炉渣聚集体的工业路面结构的混凝土具有类似的环境负荷和参考混凝土的成本，而在透水铺路块的情况下，使用EAF炉渣聚集体以降低的成本将环境负荷降低14％，对于重量级混凝土，环境负荷降低了44％，成本显着降低。

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