Zhen Tao, Zhao Pinxue, Zhang Xing, Si Wei, Ling Tianqing
School of Civil Engineering, Chongqing Jiaotong University, Xuefu Avenue 66, Chongqing 400074, China.
Sichuan Expressway Construction & Development Group Co., Ltd., Chengdu 610047, China.
Materials (Basel). 2023 Mar 27;16(7):2662. doi: 10.3390/ma16072662.
Glass fiber reinforced polymer (GFRP) is the main composite material used in wind turbine blades. In recent years, zero-carbon energy sources such as wind power have been widely used to reduce carbon emissions, resulting in a large amount of waste GFRP, and causing serious environmental problems. To explore efficient ways to recycle waste GFRP, this study explores the impact of adding GFRP powder (nominal maximum particle size ≤ 0.075 mm) on the high and low temperature properties of asphalt mastic. Samples of GFRP asphalt mastics were prepared with filler-asphalt mass ratios of 0.01:1, 0.1:1, 0.8:1, and 1:1, as well as two control samples of limestone filler asphalt mastics with filler-asphalt mass ratios of 0.8:1 and 1:1. The study analyzed the effect of GFRP on the asphalt mastic's performance using temperature sweep, MSCR, and BBR tests. Results showed that the presence of GFRP improved the high-temperature resistance and recovery of asphalt mastic but led to decreased low-temperature crack resistance. The results suggest that GFRP has the potential to be used as a filler in asphalt mastic, with a recommended filler-asphalt mass ratio range of less than 0.8:1 for optimal low-temperature performance. However, further research is necessary to determine the optimal content of GFRP in asphalt mastic and to study its impact on other road performance metrics.
玻璃纤维增强聚合物（GFRP）是风力涡轮机叶片中使用的主要复合材料。近年来，风能等零碳能源已被广泛用于减少碳排放，导致产生大量废弃GFRP，并引发严重的环境问题。为探索回收废弃GFRP的有效方法，本研究探讨了添加GFRP粉末（标称最大粒径≤0.075毫米）对沥青玛蹄脂高低温性能的影响。制备了填充料与沥青质量比为0.01:1、0.1:1、0.8:1和1:1的GFRP沥青玛蹄脂样品，以及填充料与沥青质量比为0.8:1和1:1的两种石灰岩填充料沥青玛蹄脂对照样品。该研究使用温度扫描、多重应力蠕变恢复（MSCR）和弯曲梁流变仪（BBR）试验分析了GFRP对沥青玛蹄脂性能的影响。结果表明，GFRP的存在提高了沥青玛蹄脂的高温抗性和恢复能力，但导致低温抗裂性下降。结果表明，GFRP有潜力用作沥青玛蹄脂中的填充料，为实现最佳低温性能，推荐的填充料与沥青质量比范围小于0.8:1。然而，有必要进一步研究以确定GFRP在沥青玛蹄脂中的最佳含量，并研究其对其他道路性能指标的影响。
