Infrared scan of concrete admixtures and structural steel paints.

Details

• Creators:
  Najm, Husam ; Casale, Anthony ; Scott, Nicole ; Doukakis, Johanna ; Shebeshi, Tigist
• Corporate Creators:
  Rutgers University. Center for Advanced Infrastructure and Transportation
• Corporate Contributors:
  United States. Federal Highway Administration
• Subject/TRT Terms:
  Additives Concrete Concrete--Additives--New Jersey--Testing Infrared Analysis Infrared Testing Painting Painting, Industrial--New Jersey--Testing Testing
• Publication/ Report Number:
  FHWA-NJ-2011-007
• Resource Type:
  Tech Report
• Geographical Coverage:
  New Jersey
• Edition:
  Final report; Jan. 1, 2010-June 30, 2011.
• Corporate Publisher:
  New Jersey. Dept. of Transportation
• Abstract:
  This study evaluates correlation coefficients for concrete admixtures and structural steel paints by
  
  performing IR scans using ASTM C494-05a specifications. The intent of this study is to perform a
  
  sufficient number of IR scans from different batches of the same sample as supplied by the
  
  manufacturer. These scans are then analyzed and average correlation coefficients for each sample
  
  are obtained. Each admixture and steel paint will have its own correlation coefficient as determined
  
  by the corresponding scans. The correlation coefficients will be used to quantitatively evaluate and
  
  interpret the IR scans of job samples. A total of 23 commonly used concrete admixtures by NJDOT
  
  were tested. They include air-entraining agents, water-reducing agents, retarders, accelerating
  
  agents, and combinations of these agents as well as corrosion inhibitors. In addition, a total of 28
  
  structural steel paints used by NJDOT were tested. They include primary coats, secondary coats, thin
  
  films, and resins. For concrete admixtures, the established correlation coefficients were the average
  
  values of a total of 12 scans from three different batches. For steel paints, the established correlation
  
  coefficients were the average values of a total of 6 scans from three different batches. Few field
  
  samples of concrete admixtures were tested and their scans were compared with the established
  
  correlations. The study also includes an investigation of the effect of KBr types on correlations
  
  coefficients as well the effect of drying time of air- entraining admixtures on its correlation values. The
  
  results of this study include methodology, test procedures, scan data, and correlation coefficients for
  
  quantitative assessment of the most commonly used concrete admixtures and structural steel paints
  
  on the qualified producer/supplier QPL NJDOT list.
  
  
• Format:
  PDF
• Collection(s):
  University Transportation Centers US Transportation Collection
• Main Document Checksum:
  urn:sha256:6aca27e20b51253d25d1c5c72e301aefa0178e9570ed9b33dea5fb2f41f7fe20
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/23057/dot_23057_DS1.pdf
• File Type:
  [PDF - 1.17 MB ]