ASTM WK67840

    Revision of C856 - 18a Standard Practice for Petrographic Examination of Hardened Concrete

    (What is a Work Item?)

    Active Standard: C856 - 18a

    Developed by Subcommittee: C09.65 | Committee C09 | Contact Staff Manager



    WK67840


    Keywords

    aggregates; air voids; alkali-silica reaction; analysis; deterioration; examination; fire effects; hardened concrete; microscopy; paste; petrographic; secondary deposits;;

    Rationale

    Note 1 in C856 presents an Adjunct (ADJCO856), which is a photographic chart of materials, phenomena and reaction products discussed in C856. The photos are limited in number, black and white, and lack the resolution and clarity of modern photography. The use of the adjunct is very limited. This work item is created to fulfill the following two objectives: 1. immediate removal of the current adjunct; 2. development of a digital state of the art photographic collection of phenomena related to concrete petrography.

    Citing ASTM Standards
    Back to Top
    Work Item Status

    Date Initiated:
    04-11-2019

    Technical Contact:
    Derek Cong

    Item:
    004

    Ballot:
    C09.65 (19-01)

    Status:
    Item Going To Next Ballot Level