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    GB/T 328.27-2007
    Test methods for building sheets for waterproofing - Part 27: Bitumen,plastic and rubber sheets for waterproofing-water absorption

    GB/T 328.27-2007 "Test Methods for Building Waterproofing Sheets - Part 27: Bitumen, Plastic and Rubber Sheets - Water Absorption" is applicable to the determination of water absorption for two types of waterproofing sheets. It specifies the test principle, instruments, and calculation methods. The core instrument is an analytical balance with a precision of 0.001 g and a weighing capacity of not less than 100 g, used in conjunction with a specialized immersion container and specimen holder. After conditioning the specimens under standard environmental conditions, they are immersed in water at (23±2)°C for 4 hours. The water absorption rate is calculated based on the mass difference before and after immersion. The average value of three specimens is taken as the result, reflecting the water absorption performance of the sheets.

    This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
    Status Active
    CCS Q17 ICS 91.120.30
    Release Date 2007-03-26 00:00:00 Implementation Date 2007-10-01 00:00:00

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