Xiao Zhicheng, Huang Wenke, Wu Kuanghuai, Nie Guihai, Hassan Hafiz Muhammad Zahid, Hu Bei
School of Civil Engineering, Guangzhou University, Guangzhou 510006, China.
Materials (Basel). 2021 Sep 15;14(18):5323. doi: 10.3390/ma14185323.
Epoxy asphalt concrete, mortar asphalt concrete and Gussasphalt concrete are commonly used types of deck pavement materials in bridge deck pavement engineering. However, achieving the high-temperature stability and anti-fatigue performance of the deck pavement materials is still challenging. In order to reduce the rutting and cracking risks of the asphalt mixture, this paper proposed pre-coated aggregates grouting asphalt concrete (PGAC) for bridge deck pavement. Laboratory tests were conducted to determine the optimum grouting materials and to evaluate the mechanical performances of the PGAC material. Test results showed that the mechanical properties for PGAC with grouting material of high-viscosity-modified asphalt binder blending with mineral filler were superior to that of GMA-10 used for the Hong Kong-Zhuhai-Macau Bridge deck pavement. Microstructural analysis showed that the PGAC had a more stable skeleton structure compared to other typical aggregate mixtures. This study highlights the performances of the proposed PGAC and sheds light on the deck pavement material improvement of both high-temperature stability and anti-fatigue performance that could be achieved.
环氧沥青混凝土、砂浆沥青混凝土和浇注式沥青混凝土是桥面铺装工程中常用的桥面铺装材料类型。然而，实现桥面铺装材料的高温稳定性和抗疲劳性能仍然具有挑战性。为了降低沥青混合料的车辙和开裂风险，本文提出了用于桥面铺装的预拌集料灌浆沥青混凝土（PGAC）。进行了室内试验以确定最佳灌浆材料并评估PGAC材料的力学性能。试验结果表明，采用高粘度改性沥青结合料与矿物填料混合的灌浆材料的PGAC力学性能优于用于港珠澳大桥桥面铺装的GMA-10。微观结构分析表明，与其他典型集料混合料相比，PGAC具有更稳定的骨架结构。本研究突出了所提出的PGAC的性能，并为实现高温稳定性和抗疲劳性能的桥面铺装材料改进提供了思路。
