Materials selection for concrete overlays : the final report Page: XIII
xviii, 192 p. : col. ill. ; 28 cm.View a full description of this report.
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List of Figures
Figure 2.1: Experiment on reinforcement location...................................................................... 10
Figure 2.2: Steel placed directly on top of existing pavement..................................................... 11
Figure 2.3: Different forms of polypropylene fibers ................................................................... 12
Figure 2.4: D eform ed steel fiber .................................................................................................. 13
Figure 2.5: Spraying grout immediately ahead of paver.............................................................. 14
Figure 2.6: Purpose of interlayer ................................................................................................. 16
Figure 2.7: Cooling down the prepared surface before placement .............................................. 21
Figure 2.8: Cleaning the surface with hydro cleaning equipment ............................................... 22
Figure 2.9: Blowing the fiber into the mixing truck .................................................................... 22
Figure 2.10: Failed joints in wheel path....................................................................................... 24
Figure 2.11: Prompt curing following the paver.......................................................................... 24
Figure 3.1: Layout of IH-610 North experimental sections......................................................... 35
Figure 3.2: Typical section of US 75 in Sherman........................................................................ 39
Figure 3.3: Typical section of the proposed BCO ....................................................................... 39
Figure 3.4: Prepared surface prior to the yellow stripe removal.................................................. 40
Figure 3.5: After the removal of the yellow stripe....................................................................... 41
Figure 3.6: Reinforcement detail ................................................................................................. 41
Figure 3.7: Transition reinforcement detail ................................................................................. 42
Figure 3.8: Transition reinforcement detail close-up................................................................... 42
Figure 3.9: A worker spraying water on the surface ahead of the paver ...................................... 43
Figure 3.10: Concrete too far ahead of the paving machine ........................................................ 43
Figure 3.11: Dried surface around concrete................................................................................. 44
Figure 3.12: Carpet dragging, tining, and spraying curing compound......................................... 44
Figure 3.13: Laying down burlaps ............................................................................................... 45
Figure 3.14: Cracking spacing distribution.................................................................................. 50
Figure 3.15: Average crack spacing by station............................................................................ 51
Figure 3.16: Crack spacing distribution....................................................................................... 52
Figure 3.17: Average crack spacing with time by station............................................................ 52
Figure 4.1: Fibers used in the research ........................................................................................ 60
Figure 4.2: Workability comparison at FA/(FA+CA)= 0.35 ................................................. 61
Figure 4.3: Workability comparison at FA/ (FA+CA)= 0.40........................ 62
Figure 4.4: Workability comparison at FA/ (FA+CA)= 0.45........................ 62
Figure 4.5: 5.5 sack mixture with different WRDA 82 dosage ................................................. 63
Figure 4.6: Mortar with fiber before adding WRDA 82............................ 63
Figure 4.7: Mortar with fiber after adding WRDA 82............................. 64
Figure 4.8: TxDOT ARS setup .................................................................................................. 68xiii
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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/m1/15/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.