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:
  • Concrete
  • Additives
  • Infrared analysis
  • Painting
  • Testing
  • Concrete--Additives--New Jersey--Testing
  • Painting, Industrial--New Jersey--Testing
  • Infrared 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.
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• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/23057/dot_23057_DS1.pdf
• File Type:
  [PDF - 1.17 MB]
• Collection(s):
  University Transportation Centers ; US Transportation Collection
• Main Document Checksum:
  urn:sha-512:4d87ab8f4b77b4b9a08ae08c3ddde947aad836a47c64ee0610212905a03a1a4a980727d1de168093fa16af0025d14d181a312302ec04f94baf937decc14462d2