Malinowski Szymon, Pacholak Roman, Kołodziej Krzysztof, Woszuk Agnieszka
Faculty of Civil Engineering and Architecture, Lublin University of Technology, Nadbystrzycka 40 Street, 20-618 Lublin, Poland.
Faculty of Civil Engineering and Environmental Sciences, Bialystok University of Technology, Wiejska 45E Street, 15-351 Bialystok, Poland.
Materials (Basel). 2024 Dec 2;17(23):5902. doi: 10.3390/ma17235902.
In recent years, global climate change has caused worldwide trends in science and industry toward a focus on the development of modern technologies with reduced environmental impact, including reduced CO emissions into the atmosphere. The technology for producing asphalt mixtures (AM) at lower temperatures (WMA-warm asphalt mix) using zeolite materials for the bitumen foaming process fits perfectly into these trends. Therefore, towards the development of this technology, the research presented in this paper presents the modification process of zeolite NaP1 from fly ash with silanes of different chemical structures (TEOS, MPTS, TESPT) and their application in the foaming process of bitumen modified with polymers (PMB 45/80-55). The scope of the work includes two main novelty elements: (1) the use of zeolite-silane composites in bitumen foaming and (2) polymer-modified bitumen foaming. Chemical characterisation carried out by EDS-XRF, FTIR, and XPS analysis clearly demonstrated the success of the zeolite matrix modification process, which directly resulted in textural changes. Simultaneously, mineralogical analysis carried out by XRD showed the complete retention of the initial phase composition of zeolite matrix. Further studies have shown that the application of zeolite-oxide composites results in less PMB 45/80-55 stiffening without imposing negative effects on its softening point and dynamic viscosity.
近年来，全球气候变化促使科学和工业领域在世界范围内趋向于专注开发对环境影响较小的现代技术，包括减少向大气中排放二氧化碳。利用沸石材料进行沥青发泡过程以在较低温度下生产沥青混合料（WMA-温拌沥青混合料）的技术完全符合这些趋势。因此，为了发展这项技术，本文所呈现的研究展示了用不同化学结构的硅烷（TEOS、MPTS、TESPT）对粉煤灰中的NaP1沸石进行改性的过程，以及它们在聚合物改性沥青（PMB 45/80 - 55）发泡过程中的应用。工作范围包括两个主要的新颖元素：（1）在沥青发泡中使用沸石 - 硅烷复合材料；（2）聚合物改性沥青发泡。通过EDS - XRF、FTIR和XPS分析进行的化学表征清楚地证明了沸石基体改性过程的成功，这直接导致了结构变化。同时，通过XRD进行的矿物学分析表明沸石基体的初始相组成完全保留。进一步的研究表明，应用沸石 - 氧化物复合材料可减少PMB 45/80 - 55的硬化，而不会对其软化点和动态粘度产生负面影响。
