ASTM C1922-23 PDF
Name in English:
St ASTM C1922-23
Name in Russian:
Ст ASTM C1922-23
Original standard ASTM C1922-23 in PDF full version. Additional info + preview on request
Full title and description
Standard Test Method for Water Retention of Hydraulic Cement‑Based Mortars and Plasters by Way of Water Loss — a laboratory test method that determines the ability of hydraulic cement‑based mortars and plasters to retain water when applied to specified substrates by directly measuring water loss (absorption by the substrate).
Abstract
This test method (designation C1922‑23) defines specimen preparation, selected substrates, and procedures to quantify water retention of cementitious mortars and plasters by monitoring direct water loss into the substrate. The method provides a numerical water‑retention value useful for comparative evaluation, quality control, and product development; it is complementary to mortar‑flow based water‑retention methods (for example, Test Method C1506).
General information
- Status: Active (current standard).
- Publication date: 1 June 2023 (edition C1922‑23).
- Publisher: ASTM International.
- ICS / categories: Cement. Gypsum. Lime. Mortar — ICS 91.100.10.
- Edition / version: C1922‑23 (2023).
- Number of pages: 6 pages (concise test method document).
Key bibliographic and status details above are taken from current standards listings and the ASTM/standards distributors' summaries.
Scope
This test method covers laboratory determination of water retention of hydraulic cement‑based mortars and plasters by measuring the direct loss of water from a prepared mortar specimen into a selected substrate. The procedure allows users to choose substrates representative of intended field use so that comparisons can be made between different mortars on the same substrate or a single mortar on different substrates. This method yields a water‑retention value based on water loss; it is explicitly offered as a direct‑loss complement to flow‑based methods such as Test Method C1506. Units are SI and explanatory notes and footnotes are included but are not requirements.
Key topics and requirements
- Scope and intended use: water‑retention assessment for hydraulic cement‑based mortars and plasters.
- Specimen preparation: defined mortar thickness and planar specimen geometry.
- Substrate selection: defined options and guidance so results relate to intended application.
- Measurement principle: direct measurement of water loss (absorption) from mortar into substrate over specified time intervals.
- Comparative use: allows comparison between mortars on the same substrate or the same mortar across substrates.
- Reporting: numerical water‑retention value, test conditions, and any deviations from the prescribed substrate or procedure.
- Safety and material handling: users must follow appropriate safety data sheets and laboratory safety practices.
- Relationship to other methods: notes the distinction from flow‑based water retention methods (e.g., C1506).
Typical use and users
Used by materials testing laboratories, cement and mortar manufacturers, quality control and R&D teams, independent testing agencies, specification writers, and researchers studying mortar/plaster performance and substrate compatibility. Typical applications include product development, performance comparison, QC acceptance testing, and pre‑qualification of mortars for specific substrates or applications.
Related standards
Closely related or cross‑referenced ASTM standards include Test Method C1506 (mortar flow water‑retention approach) and other cement and plaster material and curing specifications and test methods used by committees on cement and concrete products; terminology references such as Terminology C219 may be applicable. A formal revision work item for C1922‑23 has been registered for interlaboratory precision work (work item WK88273).
Keywords
water retention; mortar; plaster; absorption; hydraulic cement; substrate; water loss; test method; C1922‑23.
FAQ
Q: What is this standard?
A: ASTM C1922‑23 is a Standard Test Method that specifies a laboratory procedure to determine the water retention of hydraulic cement‑based mortars and plasters by measuring direct water loss into a chosen substrate.
Q: What does it cover?
A: It covers specimen preparation, substrate selection, the measurement protocol for direct water loss (absorption), reporting of a water‑retention value, and guidance for comparing materials and substrate effects. The method complements flow‑based water‑retention tests such as C1506.
Q: Who typically uses it?
A: Materials testing labs, mortar/plaster manufacturers, QC/R&D staff, specifiers, and researchers use this method for product development, QC comparisons, and substrate‑compatibility evaluations.
Q: Is it current or superseded?
A: The C1922‑23 edition is current/active (published 1 June 2023). A formal ASTM work item has been initiated to perform an interlaboratory study and precision assessment (see WK88273), so users should check for any published revisions or precision data after that study.
Q: Is it part of a series?
A: It is part of ASTM’s family of cement, mortar, and plaster test methods and practices (Committee C01 and relevant subcommittees). It is commonly used in conjunction with other ASTM methods and specifications addressing mortar/plaster properties and curing.
Q: What are the key keywords?
A: Water retention, absorption, mortar, plaster, hydraulic cement, substrate, water loss, test method (C1922‑23).