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The old pavement section built between these sta. The 10 pavement test sections were built in the inside laneĪdjacent to Section N5 between Stations 0+15 and 2+65 (Fig. The outer 1 ft on either side of the section wasįully bonded to confine the experimental debonded areas for To achieveĬompaction, the full-lane-width debonded areas were onlyġ0 ft wide. Was 12 ft wide (full paving width) and 25 ft long. The partial lane debonding condition included wheel Both full-lane-width and partial lane debondingĬonditions were constructed for evaluating the NDT meth. Majority of situations encountered in the top 5 in. The test sections were designed to simulate 10ĭifferent bonded and debonded conditions that represent a The design for the controlled field test sections is illustrated A 1-in.-thick, uncompacted,Ĭoarse-fractionated RAP material was used to simulate a Team ensured the good bond by using a tack coat and badīond by using bond breakers, including baghouse fines and Interfaces between dense-graded asphalt layers. There was no bond or good bond (control) at the Inside lane at the NCAT Pavement Test Track for controlledįield testing. Ten controlled asphalt pavement test sections were built in the Pavement Sections at NCAT Pavement Test Track ExtremeĬare was used to lift and transport the slabs without creating Ported to the main NCAT laboratory for testing. Finally, the two slabs were boarded and trans. Tions of stripped and debonded interfaces were examinedĪnd confirmed.
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The two slabs were cut out of the pavement section. To construct the two slabs, a short pavement section wasīuilt at the National Center for Asphalt Technology (NCAT) Surface to achieve no bond, and (c) placement of a separateġ-in.-thick, uncompacted, coarse-fractionated reclaimedĪsphalt pavement (RAP) to the receiving surface to represent (b) baghouse fines from the HMA plant to the receiving
#Pavement backcalculation bisar full
Of tack coat to the receiving surface for achieving full bond, Three interface treatments were used to achieve bonded andĭebonded conditions at the interfaces: (a) optimum amount Lack of bond and strippingâwere simulated at two depths. More detailed information about theĭesign and construction of the slabs and pavement sectionsįigure 3.1 illustrates the design of the delamination con-ĭitions of the two test slabs. This chapter provides brief information about the test slabsĪnd pavement sections. Because it is UNCORRECTED material, please consider the following text as a useful but insufficient proxy for the authoritative book pages. Copyright © National Academy of Sciences.Below is the uncorrected machine-read text of this chapter, intended to provide our own search engines and external engines with highly rich, chapter-representative searchable text of each book.
#Pavement backcalculation bisar pdf
Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. 1384, Strength and Deformation Characteristics of Pavement Structures.