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Field monitoring of mechanically stabilized earth walls to investigate secondary reinforcement effects : [technical summary].
  • Published Date:
    2015-12-01
  • Language:
    English
Filetype[PDF-119.89 KB]


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  • Abstract:
    Mechanically stabilized earth (MSE) walls have been commonly used in highway

    construction. AASHTO (2007) has detailed design procedures for such a wall system.

    In the current AASHTO design, only primary reinforcements are used in relatively

    large spacing (commonly 2 feet), which requires higher connection strength between

    reinforcements and wall facing. Large spacing between reinforcements may also

    increase the chances of wall facing bulging and construction-related problems. To

    alleviate such problems, the use of secondary reinforcements installed between

    primary reinforcements was proposed. The use of secondary reinforcements could

    (1) reduce the required connection load for primary reinforcement, (2) increase the

    internal stability by secondary reinforcement, (3) improve the compaction near the

    wall facing, and (4) mitigate the down-drag behind the wall facing. However, this

    idea was not verified in practice.

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