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首页> 外文OA文献 >Re-use assessment of thermoset composite wastes as aggregate and filler replacement for concrete-polymer composite materials: a case study regarding GFRP pultrusion wastes
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Re-use assessment of thermoset composite wastes as aggregate and filler replacement for concrete-polymer composite materials: a case study regarding GFRP pultrusion wastes

机译：热固性复合废料作为骨料和填料替代混凝土-聚合物复合材料的再利用评估：关于GFRP拉挤废料的案例研究

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Glass fibre-reinforced plastics (GFRP), nowadays commonly used in the construction, transportation and automobile sectors, have been considered inherently difficult to recycle due to both the cross-linked nature of thermoset resins, which cannot be remoulded, and the complex composition of the composite itself, which includes glass fibres, polymer matrix and different types of inorganic fillers. Hence, to date, most of the thermoset based GFRP waste is being incinerated or landfilled leading to negative environmental impacts and additional costs to producers and suppliers. With an increasing awareness of environmental matters and the subsequent desire to save resources, recycling would convert an expensive waste disposal into a profitable reusable material. In this study, the effect of the incorporation of mechanically recycled GFRP pultrusion wastes on flexural and compressive behaviour of polyester polymer mortars (PM) was assessed. For this purpose, different contents of GFRP recyclates (0%, 4%, 8% and 12%, w/w), with distinct size grades (coarse fibrous mixture and fine powdered mixture), were incorporated into polyester PM as sand aggregates and filler replacements. The effect of the incorporation of a silane coupling agent was also assessed. Experimental results revealed that GFRP waste filled polymer mortars show improved mechanical behaviour over unmodified polyester based mortars, thus indicating the feasibility of GFRP waste reuse as raw material in concrete-polymer composites.
机译：由于无法固化的热固性树脂的交联性质以及其复杂的组成，玻璃纤维增​​强塑料（GFRP）如今在建筑，运输和汽车领域普遍使用，因此固有地难以回收。复合材料本身，包括玻璃纤维，聚合物基体和不同类型的无机填料。因此，迄今为止，大多数基于热固性的GFRP废物都被焚化或填埋，这会对环境造成负面影响，并给生产商和供应商带来额外成本。随着人们对环境问题的意识日益增强，以及随之而来的节约资源的愿望，回收利用会将昂贵的废物处理转化为可盈利的可重复使用材料。在这项研究中，评估了掺入机械回收的GFRP拉挤废料对聚酯聚合物砂浆（PM）的弯曲和压缩行为的影响。为此，将具有不同尺寸等级（粗纤维混合物和细粉混合物）的不同含量的GFRP回收物（0％，4％，8％和12％，w / w）掺入聚酯PM中，作为砂骨料和填料更换。还评估了硅烷偶联剂的掺入效果。实验结果表明，与未改性的聚酯基砂浆相比，GFRP废料填充的聚合物砂浆显示出改善的机械性能，从而表明了将GFRP废料重新用作混凝土-聚合物复合材料中原料的可行性。

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