ASTM C602-23 PDF

Overview

ASTM C602-23: Standard Specification for Agricultural Liming Materials establishes requirements for materials used to neutralize soil acidity, supporting optimal soil health and agricultural productivity. Developed by ASTM International, this specification covers agricultural liming products including quicklime (burnt lime), hydrated lime, limestone (calcareous and dolomitic), marl, shells, agricultural slag, lime kiln dust, and similar by-products. The standard assists manufacturers, suppliers, regulatory bodies, and end-users in ensuring that liming materials meet essential quality and classification criteria, promoting consistent and effective results in soil management applications.

Key Topics

• Materials Covered: Includes quicklime, hydrated lime, limestone (calcitic and dolomitic), marl, shells, slag, lime kiln dust, and other calcium or magnesium-based by-products.
• Classification:
  • All materials are classified by calcium carbonate equivalent (CCE), a key measure of their ability to neutralize soil acidity.
  • Hydrated lime, quicklime, and agricultural slag are also classified based on defined particle size distribution.
• Chemical and Physical Requirements:
  • Sets minimum values for CCE for different liming materials.
  • Specifies requirements for moisture content and the levels of calcium and magnesium.
  • Details sieve analysis procedures to ensure appropriate particle sizes for effective soil amendment.
• Sampling and Testing:
  • Cites standardized sampling, sample preparation, and testing practices, such as ASTM C25, C50/C50M, C110, and C125 to ensure accurate and reproducible results.
• Reporting:
  • Requires reporting on CCE, moisture content, calcium and magnesium content, and particle size distribution.

Applications

• Agricultural Liming: The standard supports the selection and quality assurance of liming materials intended for agricultural fields, pastures, and other soil-based applications. Correct use of liming products improves soil pH, nutrient availability, and overall crop and pasture productivity.
• Soil Amendment Selection: Buyers, agronomists, and regulatory bodies use this standard to evaluate the suitability of various liming products and by-products, such as agricultural limestone, quicklime, or slag, for specific soil or regulatory needs.
• Compliance and Supply Chain: Producers and suppliers reference ASTM C602-23 to demonstrate product compliance, facilitate trade, and meet local, state, and federal regulatory requirements.
• Environmental Management: By prescribing detailed testing and reporting protocols, the standard encourages responsible use of materials and contributes to sustainable soil management practices.

Related Standards

For comprehensive compliance and testing, ASTM C602-23 should be used alongside related standards, including:

• ASTM C25: Test Methods for Chemical Analysis of Limestone, Quicklime, and Hydrated Lime
• ASTM C50/C50M: Practice for Sampling, Sample Preparation, Packaging, and Marking of Lime and Limestone Products
• ASTM C51: Terminology Relating to Lime and Limestone (as Used by the Industry)
• ASTM C110: Test Methods for Physical Testing of Quicklime, Hydrated Lime, and Limestone
• ASTM C125: Terminology Relating to Concrete and Concrete Aggregates
• ASTM C1271: Test Method for X-ray Spectrometric Analysis of Lime and Limestone
• ASTM C1301: Test Method for Major and Trace Elements in Limestone and Lime by ICP and AA
• ASTM E11: Specification for Woven Wire Test Sieve Cloth and Test Sieves

These standards collectively support the accurate classification, analysis, and application of agricultural liming materials, enabling consistent product quality and effective agronomic practice.

Keywords: agricultural liming materials, ASTM C602-23, aglime, limestone, hydrated lime, quicklime, lime kiln dust, calcium carbonate equivalent, agricultural slag, soil amendment, soil pH, soil management, standard specification, particle size, moisture content, chemical analysis.