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首页> 外文期刊>Case Studies in Construction Materials >Solid waste management in developing countries: Reusing of steel slag aggregate in eco-friendly interlocking concrete paving blocks production
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Solid waste management in developing countries: Reusing of steel slag aggregate in eco-friendly interlocking concrete paving blocks production

机译：发展中国家的固体废物管理：生态友好互锁混凝土铺路块生产中钢渣骨料的重用

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The needs to meet the global demand for the conservation of non-renewable resources has necessitated the efforts of finding alternative materials. This current study investigates the beneficial utilization of the crushed waste furnace steel slag as a replacement for natural sand in concrete interlocking paving block units’ production for pedestrian and non-traffic applications. A total number of 144 paver samples were cast at replacement percentages of 0, 20, 40, 60, 80 and 100 % by weight of sand using a mix proportion ratio of 1:1.5:3 (cement: sand: granite) at a constant water-cement ratio of 0.5, targeting a strength of 20 MPa at 28 days. Tests carried out include physical characterization of the constituent materials, compressive strength, split tensile strength and water absorption tendency of the hardened H-shaped interlocking pavers. Results showed a significant 15 % increase in the compressive strength at 28-day up to 40 % sand replacement while the tensile strength also increases by 10 % at 28-day up to 20 % sand replacement compared to the control samples before a gradual strength reduction as the percentage replacement increases. The results indicate the possibility of using waste furnace slag for the production of interlocking pavers to promote an eco-friendly and sustainable pavement infrastructure in line with the UN Sustainable Development Goals.
机译：符合全球对不可再生资源保护的全球需求所需的是寻找替代材料的努力。本研究研究调查了压碎的废物钢渣的有益利用作为自然砂中的混凝土互锁铺路块单元生产的替代品，用于行人和非交通应用。使用混合比例为1：1.5：3（水泥：砂：花岗岩）的混合比例，在0,20,40,60,80和100重量％的砂重量百分比的替换百分比下施放总数的144个摊铺机样品。水柱比为0.5，靶向28天的强度为20MPa。进行的试验包括所构成材料的物理表征，抗压强度，分裂拉伸强度和硬化的H形互锁摊铺机的吸水趋势。结果表明，在逐渐减少之前，抗拉强度在28天的抗压强度达到40％的砂置较高的抗压强度增加了15％的抗压强度增加了10％，而在逐渐减少之前，与对照样品相比，28天也增加了10％。随着百分比的替代品增加。结果表明，使用废炉渣生产互锁摊铺机的可能性，符合联合国可持续发展目标的环保和可持续的路面基础设施。

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