Effect of daily temperature variations on the continuous deflection profiles of airfield jointed concrete pavements

    Authors

    B. H. Nam; J. H. Yeon;Z. Behring

    Comments

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    Abbreviated Journal Title

    Constr. Build. Mater.

    Keywords

    Daily temperature variation; Continuous deflection profile; Airfield; jointed concrete pavement; Curling; Rolling dynamic deflectometer; Finite element analysis; ROLLING DYNAMIC DEFLECTOMETER; LOADS; Construction & Building Technology; Engineering, Civil; Materials; Science, Multidisciplinary

    Abstract

    Compared with highway roads primarily damaged by repeated vehicle loads, airfield pavements suffer more from heavier aircraft loading, along with environmental factors. In particular, a pavement temperature is one of the critical factors affecting the behavior and response of airfield jointed concrete pavements (JCP). Temperature variations cause curling and expansion/contraction of a slab, which may ultimately influence the in-situ deflection measurements. Along with the pavement temperature, it is well known that other parameters such as subsurface conditions (i.e. stiffness of base/subbase layers), setting temperature of concrete, slab dimensions, and joint/crack width also affect the behavior and response of JCP. The main objectives of this paper are to characterize: (1) the behavior of airfield JCP due to temperature variations in terms of pavement "deflections" (defined as the dynamic movements of a pavement induced by dynamic loading); and (2) the effects of various affecting parameters on the vertical displacement profile of JCP slabs. The primary research means include in-situ pavement deflection measurements at different times of a day. For this purpose, a rolling dynamic deflectometer (RDD) which measures the continuous deflection profiles along a selected pavement section (100% coverage of a tested path) was employed. Also, extensive two-dimensional numerical simulations were performed to provide supporting evidence for the behavior trends generated by RDD. (C) 2014 Elsevier Ltd. All rights reserved.

    Journal Title

    Construction and Building Materials

    Volume

    73

    Publication Date

    1-1-2014

    Document Type

    Article

    Language

    English

    First Page

    261

    Last Page

    270

    WOS Identifier

    WOS:000345806100031

    ISSN

    0950-0618

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