Temporal Deformation Characteristics of Hydraulic Asphalt Concrete Slope Flow Under Different Test Temperatures
Xuexu An, Jingjing Li, Zhiyuan Ning
TL;DR
This study examines how temperature affects the deformation of hydraulic asphalt concrete slopes over time.
Contribution
A novel temperature-controlled test apparatus was developed to analyze slope flow deformation under varying temperatures.
Findings
Slope flow deformation evolves through three distinct stages influenced by temperature changes.
Thermal stability is governed by phase transitions between asphalt binder and aggregates.
The thermal stability temperature influence factor (δ) follows a nonlinear concave growth trend with temperature.
Abstract
To investigate temporal deformation mechanisms of hydraulic asphalt concrete slope flow under evolving temperatures, this study developed a novel temperature-controlled slope flow intelligent test apparatus. Using this apparatus, slope flow tests were conducted at four temperature levels: 20 °C, 35 °C, 50 °C, and 70 °C. By applying nonlinear dynamics theory, the temporal evolution of slope flow deformation and its nonlinear mechanical characteristics under varying temperatures were thoroughly analyzed. Results indicate that the thermal stability of hydraulic asphalt concrete is synergistically governed by the phase-transition behavior between asphalt binder and aggregates. Temporal evolution of slope flow exhibits a distinct three-stage pattern as follows: rapid growth (0~12 h), where sharp temperature rise disrupts the primary skeleton of coarse aggregates; decelerated growth (12~24…
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Taxonomy
TopicsLandslides and related hazards · Dam Engineering and Safety · Soil and Unsaturated Flow