Materials selection for concrete overlays : the final report Page: XIV
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Figure 4.9: Pull-off testing ............................................................................................................ 70
Figure 4.10: Customized Restrained Shrinkage Slabs................................................................. 70
Figure 4.11: Sandblasting in progress.......................................................................................... 71
Figure 4.12: Shotblasting in progress .......................................................................................... 72
Figure 4.13: Circular Track Meter (CT Meter)............................................................................ 73
Figure 4.14: A plot of CT Meter results ...................................................................................... 73
Figure 4.15: Exposed CA shown in the prepared surface in SSD condition................................74
Figure 4.16: Compressive strength with fiber addition ............................................................... 76
Figure 4.17: Flexural strength with fiber addition....................................................................... 78
Figure 4.18: Length change results with fibers............................................................................ 79
Figure 4.19: MOE with fiber addition ......................................................................................... 81
Figure 4.20: An example of ARS and workability relationship plot ......................................8...82
Figure 4.21: ARS and workability relationship plot for F300 ..................................................... 83
Figure 4.22: ARS and workability relationship plot for NXR..................................................... 83
Figure 4.23: ARS and workability relationship plot for PF......................................................... 84
Figure 4.24: ARS and workability relationship plot for TSSF .................................................... 84
Figure 4.25: ARS and workability relationship plot for MAC470 .............................................. 85
Figure 4.26: ARS and workability relationship plot for GMF (Note: Minimum ARS
cannot be m et)................................................................................................................... 85
Figure 4.27: Failed interface of the specimen with highest ARS ................................................ 87
Figure 4.28: Failed interface of the specimen with lowest ARS ................................................. 87
Figure 4.29: Bond strength with fibers ........................................................................................ 90
Figure 5.1: HIPERBOND interface ............................................................................................. 91
Figure 5.2: An example analysis predicting failure ..................................................................... 92
Figure 5.3: An example analysis predicting a satisfactory BCO design....................................... 92
Figure 6.1: A conceptual flowchart of the project selection stage............................................. 104
Figure 6.2: Continued conceptual flowchart of the project selection stage................................ 105
Figure 6.3: Concrete overlays materials selection flowchart..................................................... 106
Figure 6.4: Flow chart 1............................................................................................................... 108
Figure 6.5: Flow chart 2 ............................................................................................................... 110
Figure 6.6: Flow chart 3 ............................................................................................................... 111
Figure 7.1: Notable distress on existing pavement and possible repairs for BCOs [4] .............114
Figure 7.2: Notable distress on existing pavement and possible repairs for bonded
whitetoppings [4]................................................115
Figure 7.3: Milled existing asphalt pavement.................................. 116
Figure 7.4: A shot blasted existing concrete pavement ........................................................... 117
Figure 7.5: Use of an air hose to clean the surface and spread pooled water just ahead of
th e p av er...................................................................................................................... . 118
Figure 7.6: Wetted surface and dried surface ..........................................................................118xiv
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Kim, Dong H.; Fowler, David W.; Ferron, Raissa P.; Trevino, Manuel M. & Whitney, David P. Materials selection for concrete overlays : the final report, report, July 2012; Austin, Texas. (https://texashistory.unt.edu/ark:/67531/metapth303706/m1/16/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.