Implementation of AIMS in Measuring Aggregate Resistance to Polishing, Abrasion, and Breakage

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.

• Record URL:
  • http://hdl.handle.net/2142/49941
• 
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01979191
• Corporate Authors:

  University of Illinois, Urbana-Champaign

  Department of Civil and Environmental Engineering
  205 North Mathews Avenue
  Urbana, IL  United States  61801-2352

  Illinois Department of Transportation

  Bureau of Materials and Physical Research
  126 East Ash Street
  Springfield, IL  United States  62704-4766

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Mahmoud, Enad
  • Ortiz, Eduardo
• Publication Date: 2014-5

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; Photos; References; Tables;
• Pagination: 59p
• Serial:
  • Civil Engineering Studies, Illinois Center for Transportation Series
  • Issue Number: 14-014
  • Publisher: University of Illinois, Urbana-Champaign
  • ISSN: 0197-9191

Subject/Index Terms

• TRT Terms: Abrasion resistance; Aggregates; Angularity; Image analysis; Polished aggregates; Properties of materials; Shape; Texture
• Identifier Terms: Micro-Deval Abrasion Test
• Geographic Terms: Illinois
• Subject Areas: Geotechnology; Highways; Materials; I36: Aggregates;

Filing Info

• Accession Number: 01529465
• Record Type: Publication
• Report/Paper Numbers: FHWA-ICT-14-014, UILU-ENG-2014-2014, ICT-14-014
• Contract Numbers: R27-129
• Files: TRIS, ATRI, USDOT, STATEDOT
• Created Date: Jun 30 2014 9:41AM