FEASIBILITY OF USING COMPUTED TOMOGRAPHIC SYSTEM TO STUDY TWO CONCRETE MIXTURES USED IN PAVING

This paper aims to demonstrate the feasibility of a computed tomographic system to study concrete paving. Tomography refers to cross-sectional imaging of an object from transmission data collected by illuminating the object from many different directions. The mathematical algorithms for tomography reconstruction are based on projection data, which represents the attenuation of photons through an object. Projection data results from interaction between the radiation used for imaging and the substance of which the object is composed. The incident beam undergoes attenuation as it travels through an object. This attenuation is due to photons either being absorbed by the atoms of the material, or being scattered away from their original directions of travel. The aim of Computed Tomography (CT) is to reconstruct a cross-sectional image of the attenuation coefficient. This work applies the computed tomography technique to the study of concrete mixture. The specimens were constructed with and without fiber. The authors also study the distribution of percentage voids in both specimens and the distribution of fiber in only one specimen. Results indicate different distributions of particle sizes for both specimens studied.

• Supplemental Notes:
  • Full conference proceedings available on CD-ROM.
• Corporate Authors:

  National Center for Asphalt Technology

  Auburn University, 277 Technology Parkway
  Auburn, AL  United States  36830
• Authors:
  • Braz, D
  • Lopes, R T
  • DA MOTTA, LMG
  • da Silva, PDEA
• Conference:
  • Second International Symposium on Maintenance and Rehabilitation of Pavements and Technological Control. Segundo Simposio Sobre Manutencao e Rehabilitacao de Pavimentos e Controle Technologico
  • Location: Auburn, Alabama
  • Date: 2001-7-29 to 2001-8-1
• Publication Date: 2001

Language

• English

Media Info

• Features: Figures; References;
• Pagination: 12p

Subject/Index Terms

• TRT Terms: Algorithms; Asphalt mixtures; Concrete pavements; Feasibility analysis; Image analysis; Pavement design; Structural models; Tomography
• Subject Areas: Bridges and other structures; Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 00975160
• Record Type: Publication
• Report/Paper Numbers: 01-008
• Files: TRIS
• Created Date: Jun 1 2004 12:00AM