ASTM C25-24 PDF
Name in English:
St ASTM C25-24
Name in Russian:
Ст ASTM C25-24
Original standard ASTM C25-24 in PDF full version. Additional info + preview on request
Full title and description
ASTM C25-24 — Standard Test Methods for Chemical Analysis of Limestone, Quicklime, and Hydrated Lime. This standard provides verified laboratory procedures (both classical gravimetric/volumetric and optional instrumental methods) for determining the chemical composition and key constituents of limestone, quicklime, and hydrated lime used in industrial, construction, and environmental applications.
Abstract
ASTM C25-24 specifies standard and alternative test methods for the chemical analysis of high‑calcium and dolomitic limestone, quicklime (CaO), and hydrated lime (Ca(OH)2). The standard lists methods for determining oxides (CaO, MgO, Al2O3, Fe2O3, SiO2, SO3, etc.), carbonates and CO2, loss on ignition (LOI), available lime index, free moisture, insoluble residue, total carbon and sulfur, and other routine determinations. It includes guidance on sample preparation and precautions to limit exposure of hygroscopic lime materials to air and moisture.
General information
- Status: Active (current edition).
- Publication date: June 28, 2024 (2024 edition, designated C25-24).
- Publisher: ASTM International.
- ICS / categories: 91.100.10 (cement; lime; gypsum / chemical analysis and testing of cementitious materials).
- Edition / version: C25-24 (2024 edition).
- Number of pages: 40 pages.
Scope
The standard covers chemical test methods for high‑calcium and dolomitic limestone, quicklime, and hydrated lime. Methods are classified as preferred (classical gravimetric or volumetric procedures suitable for referee analyses) or optional/alternative (shorter/instrumental procedures for routine determinations). The scope includes procedures for determining major and minor constituents that affect product quality, specification compliance, and fitness for use.
Key topics and requirements
- Sample preparation and handling to prevent moisture and CO2 uptake by quicklime and hydrated lime.
- Gravimetric and volumetric methods for calcium oxide, magnesium oxide, and related oxides.
- Determination of carbon dioxide and calculation of carbonate equivalents.
- Loss on ignition (LOI) and procedures for insoluble residue and silicon dioxide.
- Determination of aluminum, iron, manganese, phosphorus, strontium, sulfur trioxide, and trace constituents via specified methods or appendices.
- Optional instrumental methods (combustion/infrared, direct combustion, titrations, photometric methods, and other modern techniques) where indicated.
- Precision, bias considerations, and recommendations for referee versus routine laboratory work.
Typical use and users
Used by chemical and materials testing laboratories, lime and limestone producers, cement and mineral processors, quality control and assurance teams, environmental laboratories, research institutions, and regulatory agencies. Typical uses include raw material qualification, production quality control, contractual referee analyses, emission and mass‑balance calculations, and product specification verification.
Related standards
Commonly used alongside other ASTM standards and practices in Book of Standards Volume 04.01, for example: ASTM C114 (chemical analysis of hydraulic cement), ASTM C50/C50M (sampling and sample preparation of lime and limestone), ASTM C51 (terminology relating to lime and limestone), ASTM C110 (physical testing of quicklime and hydrated lime), and ASTM C150 (Portland cement specification). It is developed by Subcommittee C07.05 and appears in the Cement; Lime; Gypsum volume.
Keywords
limestone, quicklime, hydrated lime, chemical analysis, calcium oxide, magnesium oxide, carbon dioxide, loss on ignition, insoluble residue, free moisture, available lime index, gravimetric methods, titration, instrumental methods, ASTM C25-24
FAQ
Q: What is this standard?
A: ASTM C25-24 is the 2024 edition of the ASTM standard titled "Standard Test Methods for Chemical Analysis of Limestone, Quicklime, and Hydrated Lime," which specifies laboratory procedures to determine the chemical composition of these materials.
Q: What does it cover?
A: It covers preferred (classical) and alternative (instrumental/optional) methods for determining major and minor chemical constituents—such as CaO, MgO, CO2, SiO2, Al2O3, Fe2O3, SO3, LOI, moisture, and related determinations—plus guidance on sampling, sample handling, and precautions for hygroscopic materials.
Q: Who typically uses it?
A: Testing laboratories, lime and limestone manufacturers, cement and mineral processors, QC/QA personnel, research labs, and regulatory bodies use the standard for production control, specification compliance, and referee testing.
Q: Is it current or superseded?
A: It is current and listed as the 2024 edition (designated C25-24), last updated June 28, 2024.
Q: Is it part of a series?
A: Yes. C25 is part of the ASTM C family of standards covering cement, lime and related materials and appears in Book of Standards Volume 04.01; it is maintained by Subcommittee C07.05.
Q: What are the key keywords?
A: Key keywords include limestone, quicklime, hydrated lime, chemical analysis, CaO, MgO, CO2, LOI, insoluble residue, free moisture, titration, gravimetric methods, and instrumental analysis.