STP691: Accelerated Weathering Test for Glass-Fiber Reinforced Polyester (GRP) Sheets

    Yamasaki, RS
    Research officers Building Materials Section, National Research Council of Canada, Ottawa, Ont.

    Blaga, A
    Research officers Building Materials Section, National Research Council of Canada, Ottawa, Ont.

    Pages: 16    Published: Jan 1980


    Abstract

    With the development of GRP's of improved durability to weathering it has become necessary to devise accelerated weathering tests that permit assessment of their performance and durability within a reasonable time. The new artificial weathering procedure subjects GRP materials to a cycle of 2 h xenon arc radiation (twice the intensity used in the previously reported cycle of 4 h radiation and 4 h cold water spray) and 0.67 h cold water spray. Exposure of fire-retardant, non-gel-coated, and conventional GRP sheets induced surface degradation similar to that produced by both the 4-4 cycle and outdoor exposure in a considerably shorter time. The acceleration rate was 2.0 to 3.5 (compared with the 4-4 cycle) and 5 to 30 (compared with outdoors).

    Keywords:

    accelerated weathering test, building materials, durability, surface degradation, fiber pop-out, surface microcracking, glass-fiber reinforced polyester, fire-retardant GRP, non-gel-coated GRP, conventional GRP


    Paper ID: STP36116S

    Committee/Subcommittee: G03.02

    DOI: 10.1520/STP36116S


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