A Strain Control System for Relaxation Studies of Concrete

    Volume 4, Issue 1 (July 1982)

    ISSN: 0149-6123

    CODEN: CCAOAD

    Page Count: 5


    Pirtz, D
    Professor of civil engineering and visiting Fulbright senior scholar, University of California, Berkeley, CA

    Thomas, K
    Professor of civil engineering and visiting Fulbright senior scholar, University of California, Berkeley, CA

    Abstract

    This paper describes a system of automatic strain control devised to maintain constant strain in concrete specimens during stress relaxation tests. The system also makes provision for continuous monitoring of strain and stress as the testing proceeds. Evaluation of the system performance from the results of relaxation tests conducted using the system showed that the strain control achieved during these tests was remarkably effective. The maximum variation from initial strain recorded was 0.5 × 10−6 microstrain (0.5 × 10−6 in./in.)


    Paper ID: CCA10223J

    DOI: 10.1520/CCA10223J

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    Author
    Title A Strain Control System for Relaxation Studies of Concrete
    Symposium , 0000-00-00
    Committee C09