Al-Qudah Ayman Hassan, Koting Suhana, Ibrahim Mohd Rasdan, Alibrahim Muna M
Center for Transportation Research, Department of Civil Engineering, Faculty of Engineering, Universiti Malaya, Kuala Lumpur 50603, Malaysia.
Department of Architectural Engineering, Hijjawi Faculty of Engineering Technology, Yarmouk University, Irbid 21163, Jordan.
Materials (Basel). 2025 Jul 22;18(15):3442. doi: 10.3390/ma18153442.
Semi-flexible pavement (SFP) is a durable and cost-effective alternative to conventional rigid and flexible pavement and is formed by permeating an open-graded asphalt (OGA) layer with high-fluidity cement grout. The degradation of SFP mattresses due to fuel oil spills can result in significant maintenance costs. Incorporating glass waste (GW) into the construction of SFPs offers an eco-friendly solution, helping to reduce repair costs and environmental impact by conserving natural resources and minimizing landfill waste. The main objective of this research is to investigate the mechanical performance and fuel oil resistance of SFP composites containing different levels of glass aggregate (GlaSFlex composites). Fine glass aggregate (FGA) was replaced with fine virgin aggregate at levels of 0%, 20%, 40%, 60%, 80%, and 100% by mass. The results indicated the feasibility of utilizing FGA as a total replacement (100%) for fine aggregate in the OGA structural layer of SFPs. At 100% FGA, the composite exhibited excellent mechanical performance and durability, including a compressive strength of 8.93 MPa, a Marshall stability exceeding 38 kN, and a stiffness modulus of 19,091 MPa. Furthermore, the composite demonstrated minimal permanent deformation (0.04 mm), a high residual stability of 94.7%, a residual compressive strength of 83.3%, and strong resistance to fuel spillage with a mass loss rate of less than 1%, indicating excellent durability.
半柔性路面（SFP）是一种耐用且经济高效的传统刚性和柔性路面替代方案，它是通过用高流动性水泥浆渗透开级配沥青（OGA）层形成的。燃油泄漏导致的SFP床垫降解会产生高昂的维护成本。将玻璃废料（GW）纳入SFP的建设提供了一种环保解决方案，通过节约自然资源和减少垃圾填埋量来帮助降低维修成本和环境影响。本研究的主要目的是研究含有不同水平玻璃骨料的SFP复合材料（GlaSFlex复合材料）的力学性能和耐燃油性。细玻璃骨料（FGA）被细天然骨料按质量百分比分别替代0%、20%、40%、60%、80%和100%。结果表明，在SFP的OGA结构层中，利用FGA完全替代（100%）细骨料是可行的。在100% FGA时，该复合材料表现出优异的力学性能和耐久性，包括抗压强度为8.93 MPa、马歇尔稳定度超过38 kN以及刚度模量为19,091 MPa。此外，该复合材料表现出最小的永久变形（0.04 mm）、94.7%的高残留稳定度、83.3%的残留抗压强度以及对燃油泄漏的强抗性，质量损失率小于1%，表明具有优异的耐久性。
