Implementation of AIMS in measuring aggregate resistance to polishing, abrasion, and breakage.

Details

• Creators:
  Mahmoud, Enad ; Ortiz, Eduardo
• Corporate Creators:
  University of Illinois at Urbana-Champaign. Dept. of Civil and Environmental Engineering
• Corporate Contributors:
  United States. Federal Highway Administration ; Illinois. Dept. of Transportation. Bureau of Materials and Physical Research
• Subject/TRT Terms:
  • Image analysis
  • Polishing (Aggregates)
  • Aggregates
  • Shape
  • Texture
  • Angularity
  • Particles
  • Abrasion resistance
  • Properties of materials
• Publication/ Report Number:
  FHWA-ICT-14-014 ; UILU-ENG-2014-2014
• Resource Type:
  Tech Report
• Geographical Coverage:
  Illinois
• Corporate Publisher:
  Illinois Center for Transportation
• Abstract:
  The feasibility of using the Micro-Deval apparatus along with the second-generation Aggregate Imaging System ; (AIMS) to develop a procedure for measuring aggregate polishing resistance, and to measure aggregate shape ; properties was investigated. Eleven aggregate sources from the state of Illinois and neighboring states were ; selected to develop an aggregate polishing experimental procedure using AIMS and Micro-Deval. AIMS was ; used to measure aggregate shape properties with a special focus on aggregate angularity and surface texture, ; while Micro-Deval provided the needed polishing/degradation. Mathematical, statistical, and rate of texture loss ; analysis indicated that all aggregate sources reached terminal texture at 210 minutes or less. Aggregate ; angularity followed the same trend, and terminal angularity was achieved at 210 minutes or less. As the polishing ; procedure was finalized, aggregate shape properties were tested for 77 aggregate sources. Shape properties ; were measured before polishing and after polishing in Micro-Deval at 105 and 210 minutes, and a database was ; developed using Microsoft Excel. The research team also studied the number of aggregate particles that must be ; scanned in AIMS. Random sub-sampling and asymptotic analyses were conducted and it was concluded that ; 120 particles were required. This finding was further evaluated by manual sampling of 120 aggregate particles. ; The manual sampling proved that 120 particles were enough for AIMS angularity and texture measurements.
  More +
• Format:
  PDF
• Funding:
  R27-129
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/27813/dot_27813_DS1.pdf
• File Type:
  [PDF - 1.44 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:e2e75f0ce0f25e451f0b158cabded2b0d402a66a538ab99b43593cc9e143348f