A feasibility study on the quality inspection method of asphalt pavement using x-ray CT

The pavement guideline in Japan has designated relative compaction, gradation, and bitumen content as inspection items. This study proposes the CT-value as a new quality evaluation index to examine these items. We conducted an X-ray scanning test using five specimens of a dense-graded asphalt mixture with different bitumen content. The image data processing device computed the CT-values. We then calculated three threshold values divided into the void, binder, fine aggregate, and coarse aggregate, the slice average CT-value of the specimen, and four segments based on the CT-value data. We identified the trend of the threshold values, and the average slice and segment CT-values of the asphalt mixtures with different bitumen content. In addition, we examined the relation between these inspection items and the CT-value.

• Authors:
  • Taniguchi, S
  • Nishizaki, I
  • Ogawa, K
  • Otani, J
• Conference:
  • Seventh International Conference on Maintenance and Rehabilitation of Pavements and Technological Control
  • Location: Auckland , New Zealand
  • Date: 2012-8-28 to 2012-8-30
• Publication Date: 2012-8

Language

• English

Media Info

• Pagination: 10p
• Serial:
  • Issue Number: 00053

Subject/Index Terms

• TRT Terms: Bituminous pavements; Compaction; Image processing; Pavements; Quality assurance; Tests for suitability, service and quality
• Uncontrolled Terms: Pavement technology
• Geographic Terms: Japan
• ATRI Terms: Asphalt; Compaction; Image processing; Pavement testing; Quality assurance
• Subject Areas: Highways; Pavements;

Filing Info

• Accession Number: 01455726
• Record Type: Publication
• Source Agency: ARRB
• Files: ATRI
• Created Date: Nov 30 2012 2:51PM