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Abstract for presentation (Poster or Podium)

Highway Pavements

Characterization of Mineral Filler Sized Stone Products in Georgia for Sustainable Applications

Monday, June 17, 2024
10:15 AM - 11:30 AM ET
Room: Galleria
Abstract: The aggregate industry in Georgia produces a wide range of stone products used by a variety of industries. These materials range from multi-ton armor stone to large riprap, to coarse aggregates, to sand and mineral filler. Three types of mineral filler sized stone products have been identified in Federal Highway Administration (FHWA) Report 97-148. These include screenings, settling pond fines, and baghouse fines. As part of the scope of an ongoing research project sponsored by Georgia Department of Transportation (GDOT), information on general characteristics and current applications of the mineral filler sized stone products in Georgia was collected through a comprehensive industry survey. Subsequently, laboratory testing was performed to determine physical and engineering properties of the collected mineral filler sized stone products from selected quarries. Depending on the crushing procedure and production methods in each quarry, samples were collected from different crushing stages. The laboratory testing program included Particle Size Distribution (PSD) using dry sieve analysis, in-situ moisture content determination, particle shape property, e.g. texture, and angularity evaluation using Aggregate Image Measurement System (AIMS), moisture-density evaluation using a standard proctor test, and shear strength properties using a direct shear test. Additionally, chemical and compositional properties of collected materials were identified by performing Atterberg limits test, soil classification, and a Methylene blue test to assess the amount of harmful clay. The findings of this research are expected to have an immediate impact on sustainable construction practices in the State of Georgia by substituting a considerable amount of mineral filler sized stone products for natural aggregate resources. Results from this study are expected to provide pavement professionals with increased knowledge of the use of mineral filler sized stone products in bituminous paving mixtures, soil stabilization as well as civil fill applications.     

 
 

 
 

 

Learning Objectives:

Attendees can expect to learn the following from this session:
  • Upon completion, participant will be able to learn the use of mineral filler sized stone products in bituminous paving mixtures, soil stabilization as well as civil fill applications.
  • Upon completion, participant will learn about laboratory characterization of collected mineral filler sized stone products in Georgia.
  • Upon completion, participant will be able to define general characteristics and current applications of the mineral filler sized stone products in Georgia collected from a comprehensive industry survey