ASTM-C1699:2023 Edition

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C1699-09(2023) Standard Test Method for Moisture Retention Curves of Porous Building Materials Using Pressure Plates

Published By	Publication Date	Number of Pages
ASTM	2023

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Categories: 91.100.10 - Cement. Gypsum. Lime. Mortar, ASTM

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Description

ASTM C1699-09-Reapproved2023

Active Standard: Standard Test Method for Moisture Retention Curves of Porous Building Materials Using Pressure Plates

ASTM C1699

Scope

1.1 This test method specifies a laboratory procedure for the determination of the water retention curve (or moisture storage capacity) of porous building materials at very high relative humidity (RH) levels (≈ 95 to 100% RH) corresponding to the capillary moisture region of the sorption isotherm. This is achieved by using the pressure plate test apparatus. This technique was originally developed to study soil moisture content and eventually had been adapted to building construction materials.

1.2 At higher RH levels (≈ 95 to 100% RH) of the sorption isotherm (see Test Method C1498), use of climatic chamber is not an option. This technique uses overpressure to extract water out of the pore structure of porous materials until equilibrium between the moisture content in the specimens and the corresponding overpressure is achieved. Using the pressure plate extractors, equilibrium can only be reached by desorption.

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

1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Keywords

moisture content; pressure plate apparatus; water vapor sorption;

ICS Code

ICS Number Code 91.100.10 (Cement. Gypsum. Lime. Mortar)

DOI: 10.1520/C1699-09R23

Additional information

Standard Title	C1699-09(2023) Standard Test Method for Moisture Retention Curves of Porous Building Materials Using Pressure Plates
Published Code	ASTM
Publication Date	2023
ICS Codes	91.100.10 - Cement. Gypsum. Lime. Mortar