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- W2979102758 abstract "During the design of pavement structures, determining a reasonable thickness for pavement layers is critical. When an expressway is to be built in an area with a poor soil foundation, a reasonable subgrade treatment will make the pavement more durable. However, determining the optimal thickness of subgrade treatment is a difficult task for designers. A thicker treatment means a huge cost increase for the project, whereas a thinner treatment cannot achieve significant improvement in the mechanical behavior of pavement structures. This study used the finite-element method to analyze the mechanical response of real field pavement with subgrade treatments at certain depths. The study used an orthogonal design and gray relational theory to analyze the design indicators and make a better design for the pavement structure of a field expressway. The numerical calculation index and theoretical analysis results show that the treatment depth of subgrade soil has a significant influence on the stresses in an asphalt pavement structure and the bottom tensile strains of the asphalt layers. Therefore, designing a pavement structure with equal structural strength, using a reasonable depth for the cement-treated subgrade, instead of increasing the asphalt layer's thickness, is a more cost-effective solution." @default.
- W2979102758 created "2019-10-10" @default.
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- W2979102758 date "2019-09-29" @default.
- W2979102758 modified "2023-09-27" @default.
- W2979102758 title "Reasonable thickness design of expressway pavement structures based on gray relation analysis of subgrade soil improvement" @default.
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- W2979102758 doi "https://doi.org/10.1177/0036850419878078" @default.
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