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THIN SEALED FLEXIBLE PAVEMENT DESIGN FOR GOLD COAST SANDS

机译：薄薄的金色海岸砂砾柔性路面设计

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Pavement design to the method set out in the Austroads Pavement Design Manual (APDM) is performed as a function of the elastic properties of the subgrade material. Due to the relative uniformity in composition of the aeolian and alluvial sands in the Gold Coast region, the elastic properties of these materials need to be investigated. In this paper, the physical properties of representative samples of these soils from differing regions within this area are established to allow identification of materials. A modification of the Australian Standard Test Method AS 1289.6.1.1 "Determination of the Californian Bearing Ratio of a Soil" is used to correlate density index to CBR and the Resilient Modulus of these samples are established from Repeated Load Triaxial Test (RLTT) results. Pavement designs are then compared by the empirical and mechanistic procedures for unbound flexible pavements with thin asphaltic seals. The results of the analyses are presented in graphical form as well as recommendations for correction values to align the two design methods.
机译：根据路基材料的弹性特性，按照《 Austroads路面设计手册》（APDM）所述方法进行路面设计。由于黄金海岸地区风沙和冲积砂的成分相对均匀，因此需要研究这些材料的弹性。在本文中，建立了该区域内不同区域的这些土壤的代表性样品的物理特性，以便识别材料。修改了澳大利亚标准测试方法AS 1289.6.1.1“确定土壤的加利福尼亚承载比”，以将密度指数与CBR相关联，并根据重复载荷三轴测试（RLTT）结果确定了这些样品的弹性模量。然后，通过经验方法和机械方法比较具有薄沥青密封层的未结合柔性路面的路面设计。分析结果以图形形式显示，并给出了校正值的建议，以使两种设计方法保持一致。

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