UTILIZATION OF THE ELECTRON PROBE MICROANALYZER IN HIGHWAY MATERIALS ANALYSIS - FEASIBILITY STUDY

THIS REPORT DEALS WITH THE USE OF THE ELECTRON PROBE MICROANALYZER IN STUDYING THE INTERACTION BETWEEN CEMENTS, AGGREGATES, REINFORCING BARS, AND DEICING SALTS. AN ORIGINAL QUESTION RAISED WITH RESPECT TO THE VALIDITY OF THE DATA FROM THIS STUDY WAS THAT SPECIMENS WOULD BE DAMAGED BY EXPOSURE TO THE VACUUM SYSTEM IN THE SAMPLE CHAMBER. IT WAS FOUND THAT DAMAGE BY EXPOSURE TO THE HIGH VOLTAGE ELECTRON BEAM CAN BE MINIMIZED BY PROPER SELECTION OF OPERATING CONDITIONS. THE ELECTRON PROBE MICROANALYZER OFFERS A NEW DIMENSION IN STUDYING THE INTERACTION BETWEEN CEMENTS, AGGREGATES, REINFORCING BARS, AND DEICING SALTS. PHASE CHANGES IN THE CEMENT AND AGGREGATE INVOLVING REDISTRIBUTION OF ELEMENTS SUCH AS SODIUM OR POTASSIUM CAN BE IDENTIFIED AND STUDIED. SUSPECTED AREAS OF REACTION CAN BE SCANNED AND ELEMENTS INVOLVED IN THE REACTION CAN BE IDENTIFIED AND QUANTITATIVELY ANALYZED. /FHWA/

• Supplemental Notes:
  • Contract 500-922
• Corporate Authors:

  Utah State Department Highways

  /Materials and Test Division
  ,   United States 
• Authors:
  • Parry, W T
  • Chachas, C
  • Sorbe, V K
• Publication Date: 1973-6-30

Media Info

• Pagination: 29 p.

Subject/Index Terms

• TRT Terms: Aggregates; Cement; Chemical reactions; Deicers (Equipment); Electrons; Material reinforcement; Microanalysis; Probes (Measuring devices); Quantitative analysis
• Uncontrolled Terms: Deicers
• Old TRIS Terms: Electron probes
• Subject Areas: Geotechnology; Highways; Materials; Vehicles and Equipment;

Filing Info

• Accession Number: 00215999
• Record Type: Publication
• Source Agency: Federal Highway Administration
• Report/Paper Numbers: Final Rept
• Files: TRIS, USDOT, STATEDOT
• Created Date: Jul 16 1974 12:00AM