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About This Item

 

Full Description

1.1 This test method specifies a laboratory procedure for the determination of hygroscopic sorption isotherms of any construction materials. The method was originally developed for the ASTM Thermal Insulation committee.

1.2 For material characterization, the primary emphasis is on the adsorption isotherm (that is, sorption isotherm that describes the wetting process of the material from the oven-dry condition).

1.3 Determination of desorption isotherm, (that is, sorption isotherm that describes the drying process of a material from the state of absolute saturation with water) is performed when information on drying characteristics of construction materials is required. Typically both adsorption and desorption isotherms are required for the purpose of hygrothermal models.

1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

 

Document History

  1. ASTM C1498-04a(2016)

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    Standard Test Method for Hygroscopic Sorption Isotherms of Building Materials

    • Most Recent
  2. ASTM C1498-04a(2010)e1


    Standard Test Method for Hygroscopic Sorption Isotherms of Building Materials

    • Historical Version
  3. ASTM C1498-04a


    Standard Test Method for Hygroscopic Sorption Isotherms of Building Materials

    • Historical Version
  4. ASTM C1498-04


    Standard Test Method for Hygroscopic Sorption Isotherms of Building Materials

    • Historical Version
  5. ASTM C1498-01


    Standard Test Method for Hygroscopic Sorption Isotherms of Building Materials

    • Historical Version