ASTM D698

Full Name

ASTM D698 – Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Standard Effort (12 400 ft-lbf/ft3 (600 kN-m/m3))

Scope

ASTM D698 is a standard test method used to determine the maximum dry unit weight and optimum moisture content of soils for compaction purposes. This information is crucial for engineers and contractors in the construction industry to ensure the stability and durability of structures, such as roads, dams, and foundations.

The test involves subjecting a soil sample to a series of compactive efforts using a standard hammer or tamper. The soil is compacted at various moisture contents to determine the maximum dry unit weight that can be achieved. The moisture content at which the maximum dry unit weight is reached is known as the optimum moisture content.

Key steps involved in ASTM D698:

  • Sample preparation: a representative soil sample is obtained and prepared by removing any large particles or clods.
  • Moisture content determination: the initial moisture content of the soil is measured.
  • Compaction: the soil sample is compacted in a standard mold using a specified number of blows from a hammer or tamper.
  • Weight determination: the compacted soil is weighed and its dry unit weight is calculated.
  • Moisture content determination: the moisture content of the compacted soil is measured.
  • Repeat: the steps above are repeated for different moisture contents to determine the maximum dry unit weight and optimum moisture content

ASTM D698 Accredited Laboratory

Applied Testing & Geosciences, LLC is accredited for performing tests using the ASTM D698 standard. Our testing services can help you:

  • Evaluate the compaction characteristics of your soil samples
  • Determine the appropriate compaction requirements for your construction projects
  • Ensure the stability and durability of your structures
  • Comply with industry standards and regulations

Contact us today to learn more about our testing capabilities and how we can support your business.

Resources

Keywords

soil; compaction; density; moisture; content; proctor; test; laboratory; characteristics; standard; effort; impact; curves; molding; unit; weight; optimum; engineering; properties

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