Nan Alexandrina, Dima Cristina, Ghita Marinela, Ganea Iolanda-Veronica, Radu Teodora, Bunge Alexander
National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103 Donat Str., 400293 Cluj-Napoca, Romania.
Research Institute for Construction Equipment and Technology, 266 Pantelimon Road, 021652 Bucuresti, Romania.
Materials (Basel). 2024 Dec 7;17(23):6002. doi: 10.3390/ma17236002.
The transition to a circular economy requires new materials and products with new production designs, technologies, and processes. In order to create new materials with physico-chemical qualities suitable for application in the building materials engineering sector, stone dust and polymer waste-two environmentally hazardous industrial wastes-were combined in this study. The materials obtained were evaluated based on an analysis performed using the Micro-Deval test. The results obtained showed a Micro-Deval coefficient value of 7.7%, indicating that these artificial aggregates can replace the natural aggregates used in road construction. Additionally, it was shown that the stone dust used could be applied as a sorbent for dyes without later leaching this dye from the final synthetic stones. Another category of materials that meets the principles of the circular economy and was developed in this study is bituminous mastic, which is currently used for the hot sealing of joints in road infrastructure. For this purpose, a composite material was developed using stone dust and cooking oil to replace the filler, a non-regenerable source used for obtaining bituminous mixtures. Specific standard methods were used to assess the degree to which the new materials approach the behavior of commercially available products.
向循环经济的转变需要具有新生产设计、技术和工艺的新材料和产品。为了制造出具有适合在建筑材料工程领域应用的物理化学性质的新材料，本研究将石粉和聚合物废料（两种对环境有害的工业废料）进行了混合。基于使用微德瓦尔试验进行的分析，对所得材料进行了评估。所得结果显示微德瓦尔系数值为7.7%，这表明这些人造骨料可以替代道路建设中使用的天然骨料。此外，研究表明，所用的石粉可以用作染料吸附剂，且最终合成石材不会随后浸出该染料。本研究中开发的另一类符合循环经济原则的材料是沥青玛蹄脂，其目前用于道路基础设施接缝的热密封。为此，利用石粉和食用油开发了一种复合材料，以替代用于获得沥青混合料的不可再生填料来源。使用特定的标准方法来评估新材料接近市售产品性能的程度。
