5 results match your criteria: "Jiangxi Transportation Institute Co.[Affiliation]"

Background: Drowsiness detection is a long-standing concern in preventing drowsiness-related accidents. Inter-individual differences seriously affect drowsiness detection accuracy. However, most existing studies neglected inter-individual differences in measurements' calculation parameters and drowsiness thresholds.

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Article Synopsis
  • * The research evaluates how these fibers influence high-temperature, low-temperature, and fatigue performance at various RAP levels, finding that basalt fibers significantly enhance performance more than polyester fibers at 30% and 50% RAP content.
  • * Experimental results indicate that basalt fibers can improve the fracture energy of recycled mixtures by up to 13.9% and increase fatigue life by 154%, though both fiber types make compaction harder, with polyester fibers impacting the compaction energy index more.
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Experimental Investigation of Water Vapor Concentration on Fracture Properties of Asphalt Concrete.

Materials (Basel)

July 2024

School of Transportation and Logistics Engineering, Wuhan University of Technology, Hubei Highway Engineering Research Center, Wuhan 430063, China.

The effect of moisture on the fracture resistance of asphalt concrete is a significant concern in pavement engineering. To investigate the effect of the water vapor concentration on the fracture properties of asphalt concrete, this study first designed a humidity conditioning program at the relative humidity () levels of 2%, 50%, 80%, and 100% for the three types of asphalt concrete mixtures (AC-13C, AC-20C, and AC-25C).The finite element model was developed to simulate the water vapor diffusion and determine the duration of the conditioning period.

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Fatigue cracking is one of the primary distresses of asphalt pavements, which significantly affects the asphalt pavement performance. The fatigue behavior of the asphalt mixture observed in the laboratory test can vary depending on the type of fatigue test and the dimension and shape of the test specimen. The variations can make it difficult to accurately evaluate the fatigue properties of the field asphalt concrete.

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The time-dependent interfacial adhesion between rock and fresh mortar is key for printing concrete linings in mountain tunnels. However, a scientific deficit exists in the time-dependent evolution of the interfacial adhesion, which can cause adhesion failure when printing tunnel lining. Nanoclay has the potential to increase the interfacial adhesion and eliminate the adhesion failure.

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