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From page 230... ... 230 A p p e n d i x Q This appendix summarizes the activities and testing results from Phase 3 of the R06B project titled "Evaluating Applications of Field Spectroscopy Devices to Fingerprint Commonly Used Construction Materials." The appendix describes the Phase 3 objectives, followed by descriptions of the scope of work and experimental protocol. The example results of spectroscopic testing in the field are presented next. Read the entire page →
From page 231... ... 231 Table Q.1. Scope of Work for Phase 3 Location/Contractor Project Type Material Category Sampling Methoda Equipment Labor Mansfield Depot, CT NA Structural coatings Scraping dry paint (solid) Read the entire page →
From page 232... ... 232 applied to a sampling surface is the laser shutter opened. Additional precautions regarding safe handling of lasers for outdoor operation can be found in the approved American National Standard Institutes publication, ANSI Z136.1 (2007) Read the entire page →
From page 233... ... 233 (Phase 3) stages. Read the entire page →
From page 234... ... 234 tested in Phase 2 18 months earlier by a different instrument. Figure Q.4 shows that the adhesive can be positively identified within 10 min (onset time) Read the entire page →
From page 235... ... 235 Figure Q.5. Device calibration (top left ) Read the entire page →
From page 236... ... 236 Table Q.2. Elemental Composition of White Traffic Paint Strip as Determined by XRF Element Sample 1 Sample 2 Sample 3 Average Concentration (ppm) Read the entire page →
From page 237... ... 237 Traffic Paints: ATR Objectives: Fingerprinting of the traffic paint samples in the field (see example in Figure Q.6) Team operators: Iliya Yut Field operator: NA Equipment: Bruker ALPHA ATR Test date: September 1, 2011 Location: East Hartford, Connecticut Contractor: Connecticut DOT District 1 Pavement Marking Project type: Test white and yellow line marking Material collected: Ennis waterborne Fast Dry paint (white and yellow) Read the entire page →
From page 238... ... 238 Figure Q.6. Application of white paint (top left ) Read the entire page →
From page 239... ... 239 Figure Q.7. Comparison of the ATR spectra of Ennis Fast Dry white paint sampled from tank, freshly applied white marking, and old white line surface. Read the entire page →
From page 240... ... 240 Figure Q.9. Pouring of PCC into a slab mold (top left ) Read the entire page →
From page 241... ... 241 The characteristic absorption peaks associated with the tall oil component of the AIR chemical (2,929, 2,857, 1,543, 1,466, and 1,402 cm-1) can be easily identified on each spectrum in Figure Q.10. Read the entire page →
From page 242... ... 242 it can be concluded that the FTIR spectra of chemical admixtures for PCC can be standardized without concern for precision and accuracy of the measurements. One of the objectives of the FTIR testing of PCC was verification of the admixture's presence in a fresh PCC mix. Read the entire page →
From page 243... ... 243 Figure Q.14. Equipment setup (top left ) Read the entire page →
From page 244... ... 244 Field operator: NA Equipment: Bruker ALPHA ATR Test date: August 16, 2011 Location: Farmington, Connecticut, I-84 Eastbound, North of Exit 36 Contractor: All States Asphalt Group Project type: 2-in HMA overlay with styrene– butadiene–styrene (SBS) -modified PG 76-22 binder Material collected: HMA mix from paver, tack coat from pavement surface Sample type: Solid HMA and liquid tack coat (emulsion) Read the entire page →
From page 245... ... 245 composition. The peak at about 2,180 cm-1 indicates the presence of carbon dioxide from entrapped hot air. Read the entire page →
From page 246... ... 246 characteristic absorption peaks attributed to DCM, which are at 1,263, 739, and 706 cm-1, do not interfere with characteristic peaks of the aliphatic component of the binder (1,455 and 1,377 cm-1) or with the absorption of filler particles. Read the entire page →
From page 247... ... 247 Figure Q.20. Sampling emulsion (top left ) Read the entire page →
From page 248... ... 248 Figure Q.21. ATR spectra of pure emulsion from tank (CRS-2) Read the entire page →
From page 249... ... 249 Figure Q.23. Comparison of the two AD-here antistripping samples with different chemical compositions. Read the entire page →
From page 250... ... 250 Figure Q.25. White paint measured on glass corrected to remove fluorescence and ambient light contributions. Read the entire page →
From page 251... ... 251 Figure Q.27. White paint (old) Read the entire page →
From page 252... ... 252 Figure Q.29. Air 200 spectrum averaged for 20 scans (five spectra measured at four scans, no background subtraction necessary) Read the entire page →
From page 253... ... 253 Table Q.7. Raman Spectral Results and Signal-to-Noise Ratio Calculations Material Category Sample ID Success (Yes/No) Read the entire page →

From page 230...

... 230 A p p e n d i x Q This appendix summarizes the activities and testing results from Phase 3 of the R06B project titled "Evaluating Applications of Field Spectroscopy Devices to Fingerprint Commonly Used Construction Materials." The appendix describes the Phase 3 objectives, followed by descriptions of the scope of work and experimental protocol. The example results of spectroscopic testing in the field are presented next.