摘要
为了提高改、扩建工程沥青路面的路用性能,选取双绞合钢丝网、自粘式玻纤格栅、钢塑复合土工格栅及聚酯长丝土工布等4种加筋材料,并分别设置于基面层间和面层层间。通过大量室内加筋组合试件的性能试验,分析比较了不同加筋组合试件的路用性能和抗差异沉降能力。研究结果表明:独特三维网孔结构的双绞合钢丝网具有优良的物理力学性能,耐腐蚀,强度高,抗疲劳,整体性好,抗变形能力强。与未加筋的相比,不同筋材加筋有效地提高了沥青路面的抗高温车辙和抗低温开裂性能,以及抗差异沉降开裂能力。当筋材铺筑于面层层间时,有利于提高沥青路面的抗车辙能力;当筋材铺筑于基面层间时,有利于提高沥青路面的抗裂能力。总体上,双绞合钢丝网加筋的效果最佳,优于其他3种筋材,是一种性能优良的新型路面加筋材料,可在公路改、扩建的拓宽和加铺工程中推广应用。
In order to improve the pavement performances of asphalt pavements in reconstruction and extension engineering, four kinds of reinforced materials, including double twisted steel wire mesh, self-adhered glass fiber grill, steel-plastic composite geogrid and polyester-filament geotextile, were selected to install the interlayer between base and surface as well as surface layers, respectively. Lots of labor performance experiments for reinforced composite specimens were conducted to analyze and compare the pavement performances and the capacities of differential settlement resistance of different reinforced composite specimens. The results show that the double twisted steel wire mesh with the unique three-dimensional mesh structure has the excellent physical and mechanical properties, such as corrosion resistance, high strength, anti-fatigue, good integrality and strong anti-deformation capacity. Compared with non-reinforcement, the reinforcements with different reinforced materials can effectively improve the high temperature anti-rutting, low temperature anti-cracking performances and the capacity of differential settlement resistance for asphalt pavements. When the reinforced materials are paved in the interlayer between surface layers, it can help to improve the anti-rutting capacity for asphalt pavements. When the reinforced materials are paved in the interlayer between base and surface, it can help to improve the anti-cracking capacity for asphalt pavements. The double twisted steel wire mesh has the optimum reinforced effects and is better than the other three kinds of reinforced materials. Therefore, it is a new kind of pavement reinforced material with excellent performances, and can be popularized and applied in widening and repaying engineering of highway reconstruction and extension.
出处
《交通科学与工程》
2014年第1期7-11,55,共6页
Journal of Transport Science and Engineering
基金
国家自然科学基金项目(51078045)
关键词
双绞合钢丝网
路面加筋
沥青混合料
路用性能
差异沉降
double twisted steel wire mesh
pavement reinforcing
asphalt mixture
pavement performance
differential settlement
