This research took the form of an investigation into the applicability of polyethylene terephthalate (PET) as strength modifiers in asphalt road construction. Samples of thoroughly washed, naturally dried and shredded PET wastes were collected. The optimum binder content (OBC) of the unmodified asphalt mix was determined. The bitumen used for the control mix was replaced with PET waste in 1, 3 and 5% proportions. Another sample was prepared with the addition of 1, 3 and 5% of PET waste while the OBC was fixed. The samples were subjected to Marshall Stability (MS) and Marshall Flow (MF) tests. Bulk density (BD), void in total mix (VTM), and void filled with bitumen (VFB) were determined. The results were compared with standards. The PET content obtained that conforms to the specification in AASHTO, ASTM and Nigeria Federal Ministry of Works standards was found to be 1% addition to OBC by weight of aggregate. This percentage PET content was 15% by weight of bitumen with BD, VTM, VFB, MF and MS being 2.38 kg/m3, 3.33%, 82.20%, 4.00 mm and 17.01 kN, respectively. The 1% PET modified asphalt was found to be useful for pavement construction and reduces the quantity of plastic waste in our environment.
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机译：这项研究采取了调查形式，即聚对苯二甲酸乙二醇酯（PET）作为强度改良剂在沥青路面施工中的适用性。收集彻底清洗，自然干燥和切碎的PET废料的样品。确定了未改性沥青混合料的最佳粘结剂含量（OBC）。用于控制混合物的沥青以1、3和5％的比例替换为PET废料。在固定OBC的同时，添加1、3和5％的PET废料制备另一个样品。对样品进行马歇尔稳定性（MS）和马歇尔流动（MF）测试。测定堆积密度（BD），总混合物中的空隙（VTM）和填充有沥青的空隙（VFB）。将结果与标准进行比较。发现所获得的符合AASHTO，ASTM和尼日利亚联邦工程部标准的PET含量为骨料重量的OBC的1％。该百分比的PET含量为沥青的15重量％，其中BD，VTM，VFB，MF和MS分别为2.38kg / m 3，3.33％，82.20％，4.00mm和17.01kN。发现1％的PET改性沥青可用于人行道建设，并减少我们环境中的塑料废料量。
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