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Implementation of performance-based bridge deck protective systems.

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English


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  • Abstract:
    When considering the durability of a bridge, the concrete deck is often the most vulnerable component and can be the limiting factor  ; affecting service life.  To enhance the durability of both new and existing bridge decks, a protective system is often provided to prevent  ; or delay the ingress of chlorides and moisture to the reinforcing steel.  In the state of Indiana, this protective system typically comes in  ; the form of a concrete overlay or a thin polymer overlay.   Another protective system widely used in the United States and in many  ; countries internationally consists of a waterproofing membrane overlaid with asphaltic concrete.  Due to a history of poor performance  ; in the 1970’s and the 1980’s, a moratorium has been placed on the installation of waterproofing membranes in Indiana.   This study  ; reevaluates the state‐of‐the‐practice  of  bridge  deck  protection  in  Indiana  with the  goal  of  enhancing the  Indiana Department  of  ; Transportation’s toolbox of bridge deck protective systems.  Consideration was given to the state‐of‐the‐art and state‐of‐the‐practice in  ; bridge  deck  protective systems  used  by  other state  transportation  agencies  as  well  as  by  international  transportation  agencies.   ; Research  focused  on the  practice  of  installing  waterproofing membranes  and the  latest technologies  being  used.    Based  on the  ; information gathered, various protective systems were evaluated, and recommendations are provided on the selection of the most  ; appropriate systems  for  various  bridge  conditions.    Furthermore,  a recommendation  is  provided  to remove  the  moratorium  on  ; membrane systems so that the benefits of this system can be more fully explored and realized.
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    urn:sha256:83f30a6f61846ecccd47214580fe76f662133413fe6610ccd7fa87d53815b59a
File Language:
English
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