Post-graduate Program of Civil and Environmental Engineering, Department of Technology, State University of Feira de Santana, Av. Transnordestina, S/N - Novo Horizonte, Feira de Santana, Bahia 44036-900, Brazil.
Waste Manag. 2010 Jun;30(6):1107-13. doi: 10.1016/j.wasman.2010.02.007. Epub 2010 Mar 1.
In this paper two types of recycled aggregate, originated from construction and demolition waste (CDW) and ethylene vinyl acetate (EVA) waste, were used in the production of concrete. The EVA waste results from cutting off the EVA expanded sheets used to produce insoles and innersoles of shoes in the footwear industry. The goal of this study was to evaluate the influence of the use of these recycled aggregates as replacements of the natural coarse aggregate, upon density, compressive strength, tensile splitting strength and flexural behavior of recycled concrete. The experimental program was developed with three w/c ratios: 0.49, 0.63 and 0.82. Fifteen mixtures were produced with different aggregate substitution rates (0%, 50% EVA, 50% CDW, 25% CDW-25% EVA and 50% CDW-50% EVA), by volume. The results showed that it is possible to use the EVA waste and CDW to produce lightweight concrete having semi-structural properties.
本文使用了两种再生骨料，一种来源于建筑和拆除废物（CDW），另一种来源于乙烯-醋酸乙烯共聚物（EVA）废物，用于混凝土的生产。EVA 废物是在制鞋业中用于生产鞋底和鞋内垫的 EVA 膨胀片切割过程中产生的。本研究的目的是评估使用这些再生骨料替代天然粗骨料对再生混凝土的密度、抗压强度、劈裂抗拉强度和弯曲性能的影响。实验方案采用三个水灰比（w/c）比：0.49、0.63 和 0.82。通过体积比，用不同的骨料替代率（0%、50% EVA、50% CDW、25% CDW-25% EVA 和 50% CDW-50% EVA）生产了 15 种混合物。结果表明，使用 EVA 废物和 CDW 生产具有半结构性的轻质混凝土是可行的。
