ASTM C472
Full Name
ASTM C472 – Standard Test Methods for Physical Testing of Gypsum, Gypsum Plasters, and Gypsum Concrete
Scope
ASTM C472 encompasses a collection of test methods designed to assess the physical properties of gypsum, gypsum plasters, and gypsum concrete. These test methods offer standardized procedures to evaluate various characteristics of these materials, enabling consistent comparison and quality control.
Key areas covered by ASTM C472 include:
- Free water: the amount of water in excess of that chemically combined in gypsum.
- Fineness: the particle size distribution of gypsum and gypsum plaster.
- Normal consistency of gypsum plaster: the consistency at which a gypsum plaster will neither spread too readily nor remain in a consolidated mass when formed into a pat.
- Normal consistency of gypsum concrete: the water-cement ratio for gypsum concrete at which a specified consistency is achieved.
- Time of setting: the time it takes for gypsum plaster or concrete to harden to a certain degree.
- Compressive strength: the ability of hardened gypsum or gypsum concrete to resist compressive loads.
- Density: the mass per unit volume of gypsum or gypsum concrete.
By adhering to the standardized procedures outlined in ASTM C472, researchers, manufacturers, and practitioners can ensure the reliability and reproducibility of test results, facilitating informed decision-making and promoting the use of high-quality gypsum products.
ASTM C472 Accredited Laboratory
Applied Testing & Geosciences, LLC is accredited for performing tests using the ASTM C472 standard.
Contact us today to learn how our testing capabilities can support your product development, quality control, and compliance efforts.
Resources
Keywords
gypsum; gypsum plaster; gypsum concrete; physical testing; free water; fineness; normal consistency; setting time; compressive strength; density; modified vicat apparatus; time of setting