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  • ASTM D4439-25
    土工合成材料標準術語

    Standard Terminology for Geosynthetics


    標準號
    ASTM D4439-25
    發布
    2025年
    總頁數
    7頁
    發布單位
    美國材料與試驗協會
    當前最新
    ASTM D4439-25
     
     
    引用標準
    ASTM D1987 ASTM D4 ASTM D4354 ASTM D4751 ASTM D5 ASTM D5101 ASTM D5141 ASTM D5262 ASTM D5322 ASTM D5323 ASTM D5397 ASTM D5494 ASTM D5567 ASTM D5594 ASTM D5818 ASTM D5820
    適用范圍
    This standard is issued under the fixed designation D4439; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
    術語描述
    absorption, n
    Absorption
    The process by which a liquid is drawn into and tends to fill permeable pores in a porous solid body, also, the increase in mass of a porous solid body resulting from penetration of a liquid into its permeable pores.
    apparent opening size (AOS), O95, n
    Apparent Opening Size
    For a geotextile, a property which indicates the approximate largest particle that would effectively pass through the geotextile.
    barrier
    Barrier
    The ability of a geosynthetic to prevent or reduce flow, mass transfer, or both. The boundaries for the function are usually defined by a single or multiple engineering or regulatory thresholds.
    biocide, n
    Biocide
    A chemical used to kill bacteria and other microorganisms.
    clogging potential, n
    Clogging Potential
    In geotextiles, the tendency for a given geotextile to decrease permeability due to soil particles that have either lodged in the geotextile openings or have built up a restrictive layer on the surface of the geotextile.

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