Integrated Design of Materials and Structures for Flexible Base Asphalt Pavement
Bin Huang, Qinxue Pan, Xiaolong Chen, Jia Hu, Songtao Lv
TL;DR
This study improves asphalt pavement design by integrating material properties and structural analysis to enhance durability and reduce errors.
Contribution
The paper introduces an integrated design method using dual-modulus theory to optimize pavement structures based on material properties.
Findings
Fatigue life and structural responses vary nonlinearly with thickness and modulus.
Tensile modulus effects are more significant than compressive ones in pavement layers.
Optimized structures using the method extend pavement service life and improve stress distribution.
Abstract
Current asphalt pavement structural design methods often lack a strong quantitative link to materials’ mixtures and mechanical properties and typically ignore the significant tensile–compressive disparities of materials, resulting in notable analysis errors. This study employed the dual-modulus theory to numerically analyze flexible base asphalt pavements under varied configurations, revealing how critical structural responses and fatigue life evolve. This examination also determined optimal layer mixes through mechanical parameter modeling for integrated material–structure design. The results showed that fundamental responses and fatigue life vary nonlinearly with thickness and modulus. The effect of modulus outweighed that of thickness, with the effects of the tensile modulus being more pronounced than compressive ones, and surface transverse strain being most sensitive to both. The…
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Taxonomy
TopicsAsphalt Pavement Performance Evaluation · Infrastructure Maintenance and Monitoring · Transport Systems and Technology