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Evaluating the Thermal Characteristics of Rubberized Asphalt by Applying the Object-Based Approach

  • Shenming Wu
  • Yishuo Huang
  • Yu-Min Su
  • Yuan-Zhih Lin
Conference paper
Part of the Sustainable Civil Infrastructures book series (SUCI)

Abstract

Rubberized asphalt concrete (RAC) is the pavement material containing asphalt concrete and the crumbed rubber made from the recycled tires. RAC provides an environmentally friendly alternative to pavement materials. Thermal segregation caused by temperature differences presented in hot mix asphalt (HMA) can be used as defect indicators of physical segregation, irregularities, and low densities. The surface temperature information recorded by a thermal camera can usually be used as a clue to identify defects shown on the pavement. Thermography can be used to record the surface temperature information. PAVE-IR mounted on a paver is used to monitor the surface temperature of the pavement in real time. However, a roller is employed to visit the pavement after the paver passed over the pavement. A thermal infrared camera can immediately have applied to record the surface temperature information after the roller passed over the pavement. The study proposes an object-based approach to group those pixels with the similar surface temperatures such that each thermography can be automatically composed of the limited regions and the surface temperature distribution in each region is replaced by the average pixel value of the region. In doing so, the regional boundaries can be extracted, and the thermal segregation illustrated on the constructed pavement can be identified after RAC and HMA installed on a mat. Recently, the RAC pavement was introduced into Taiwan, but its related studies are few. This study did collect two kinds of field data: one is to immediately collect the thermal infrared images after RAC installed in a mat, and another one is to immediately collect a series of thermal infrared image HMA installed in a mat. The proposed approach offers an efficient and robust way to analyze the collected thermography, and the analyzed results reveal the important clues to identify the thermal segregation after RAC and HMA installed in mats, separately. By analyzing the collected thermal infrared images, the cooling tendencies can be quantitatively described.

Notes

Acknowledgements

The authors like to show their appreciations for the finical support from Taiwan Construction Research Institute such that the work can be done.

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2019

Authors and Affiliations

  • Shenming Wu
    • 1
  • Yishuo Huang
    • 1
  • Yu-Min Su
    • 2
  • Yuan-Zhih Lin
    • 1
  1. 1.Department of Construction EngineeringChaoyang University of TechnologyTaichungTaiwan
  2. 2.Department of Civil EngineeringNational Kaohsiung University of Applied SciencesKaohsiungTaiwan

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