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Engineering and Manufacturing Technology of Green Epoxy Resin Coatings Modified with Recycled Fine Aggregates
International Journal of Precision Engineering and Manufacturing-Green Technology ( IF 4.2 ) Pub Date : 2021-07-12 , DOI: 10.1007/s40684-021-00377-w
Kamil Krzywiński 1 , Łukasz Sadowski 1 , Damian Stefaniuk 2, 3 , Aleksei Obrosov 4 , Sabine Weiß 4
Affiliation  

Nowadays, the recycled fine aggregate sourced from construction and demolition waste is not frequently used in manufacturing of epoxy resin coatings. Therefore, the main novelty of the article is to prepare green epoxy resin coatings modified with recycled fine aggregate in a replacement ratio of natural fine aggregate ranged from 20 to 100%. The microstructural properties of the aggregates and epoxy resin were analyzed using micro-computed tomography, scanning electron microscopy and nanoindentation. The macroscopic mechanical properties were examined using pull-off strength tests. The highest improvement of the mechanical properties was observed for epoxy resin coatings modified with 20% of natural fine aggregate and 80% of recycled fine aggregate. It has been found that even 100% of natural fine aggregate can be successfully replaced using the recycled fine aggregate with consequent improvement of the pull-off strength of analyzed epoxy resin coatings. In order to confirm the assumptions resulting from the conducted research, an original analytical and numerical failure model proved the superior behavior of modified coating was developed.



中文翻译:

再生细骨料改性绿色环氧树脂涂料工程与制造技术

目前,从建筑和拆迁废料中提取的再生细骨料已不常用于环氧树脂涂料的制造。因此,本文的主要新颖之处在于,以20%~100%的天然细骨料替代率制备再生细骨料改性的绿色环氧树脂涂料。使用显微计算机断层扫描、扫描电子显微镜和纳米压痕分析聚集体和环氧树脂的微观结构特性。使用拉断强度测试检查宏观机械性能。对于用 20% 的天然细骨料和 80% 的再生细骨料改性的环氧树脂涂料,观察到机械性能的最大改进。已经发现,即使 100% 的天然细骨料也可以使用回收的细骨料成功替代,从而提高所分析环氧树脂涂层的抗拉强度。为了证实所进行的研究得出的假设,开发了一个原始的分析和数值失效模型,证明了改性涂层的优越性能。

更新日期:2021-07-12
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