GSOG应力吸收层抑制反射裂缝能力的研究

Research on Resistance of Reflective-Cracking of"GSOG"stress absorbing layer

在杨高路大修工程中使用一种新型间断半开级配的沥青混合料(GSOG)充当应力吸收层,分散板块间的水平温缩应力与竖向剪切力共同作用下的应力集中,延缓反射裂缝产生的速度。经高温稳定性、低温约束试件及嵌入式轴向加载试验,均有良好表现,对比AC-20试验段,证明它具备良好的分散应力集中的能力。

A new type of half-open-graded Asphalt paving mixtures(GSOG) was used as stress- absorbing layer to reduce joint concentrated stress caused by temperature shrinkage and shear stress in YANGGAO ROAD rehabilitation project,which can delay the propagation of reflection cracking.The mixture shows good performance at high-temperature stability testing,TRST and embedded axial loading test.Compared with AC-20 testing section,it was proved that GSOG mixtures have good ability to scatter the concentrated stress.