Fundamental Properties of Asphalts and Modified Asphalts, III

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figure 2-2.2.9 suggests that calcite is predominate in the RD aggregate since calcite is infrared inactive in this area [Logodi et al 2001]. The band at about 2510 cm -1 has been used to quantify amounts of residual limestone in lime [Norton and McClelland 1996] and Logodi et al. [2001] have used the out-of-plane bending band at 876 cm -1 to quantify the amount of limestone in cement blends. Logodi mentions that the band at 876 cm -1 has also been used to quantify the amount of CaCO3 in CaCO3 /Ca(OH)2 mixtures and to study the kinetics of the decomposition of CaCO3 to CaO. Arnold et al. [2006] has used the band at 3640 cm -1 to evaluate the presence of lime in asphalt pavement. Figure 2-2.2.9. PA spectra of SHRP RD (limestone) aggregate at different OPD velocities. Top: OPD velocity 2.0 cm/sec, average of six spectra (128 co-added scans per spectrum), gain (7). Second from top: OPD velocity 1.0 cm/sec, average of four spectra (256 co-added scans per spectrum), gain (7). Third from top: OPD velocity 0.5 cm/sec, one spectra (256 co-added scans), gain (7). Bottom: OPD velocity 0.1 cm/sec, one spectra (64 co-added scans). 28
SHRP RA (granite) PA spectra of RA aggregate at two OPD velocities (1 cm/sec and 2 cm/sec) are presented in figure 2-2.2.10. The major RA elemental oxide is SiO2 (71%), which has an intense peak around 1100 cm -1 [Smith 1996]. The major mineral component in RA aggregate is quartz (56%). Quartz exhibits an intense broad band around 1100 cm -1 from the SiO2 and also shows sharper bands at 795, 775 and 690 cm -1 [Jackson 1998]. Figure 2-2.2.10. PA spectra of SHRP RA (granite) aggregate at two OPD velocities. Top: OPD velocity 1.0 cm/sec, average of 4 spectra (256 co-added scans per spectrum), gain (7). Bottom OPD velocity 2.0 cm/sec, average of 5 spectra (128 co-added scans per spectrum), gain (7). 29
Page 1: Fundamental Properties of Asphalts
Page 5: TASK 1. COORDINATION The goals of t
Page 8 and 9: Support of FHWA Strategic Goals The
Page 11 and 12: SUBTASK 2-2. AGING SUBTASK 2-2.1. I
Page 13 and 14: To further evaluate how water influ
Page 15 and 16: SUBTASK 2-2.2. SUPPORT OF THE MECHA
Page 17 and 18: Work Conducted This Quarter Introdu
Page 19 and 20: greater than 100 micrometers are co
Page 21 and 22: limestone. Major RA elemental oxide
Page 23 and 24: Log G* at 10 rad/s 8 7 6 5 25°C y
Page 25 and 26: Table 2-2.2.3b. Experiment status m
Page 27 and 28: Table 2-2.2.4b. Experiment status m
Page 29 and 30: (a) (b) PA Intensity (arbitray unit
Page 31: PA - Carbonyl total peak ht. (1700
Page 35 and 36: Mastics Several asphalt mastics wer
Page 37 and 38: 4000.0 3600 3200 2800 2400 2000 180
Page 39 and 40: • LTA1 (long term aging Level 1):
Page 41 and 42: The increase in carbonyl at the cen
Page 43 and 44: figure 2-2.2.19 to show the correla
Page 45 and 46: The majority of the results were pr
Page 47 and 48: Hirschfeld, T., 1976, Computer Reso
Page 49 and 50: SUBTASK 2-3. NANOTECHNOLOGY: AFM AN
Page 51 and 52: comprised of tens of thousands of d
Page 53 and 54: to the aggregate fine particle inte
Page 55 and 56: a. Sample, b. cold stage, c. hot st
Page 57 and 58: Problems and Solutions to Problems
Page 59: SUBTASK 2-4. LOW-TEMPERATURE PROPER
Page 62 and 63: Background The addition of polyphos
Page 64 and 65: All different aging times were shif
Page 66 and 67: Log a A 2.5 2.0 1.5 1.0 0.5 AAM-1,
Page 68 and 69: KAO Gripper. The minor resonance wa
Page 70 and 71: Dadey et al. [1988] proposed Scheme
Page 72 and 73: Problems and Solution to Problem No
Page 75: SUBTASK 2-6: VALIDATION SITE MONITO
Page 79: TASK 4. INFORMATION DEPLOYMENT SUBT
Page 83:
SUBTASK 4-3. RESEARCH DATABASE—CO
Page 89:
SUBTASK 4-5. SUPPORT OF THE MECHANI
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