Specialty Materials Testing
Standard Proctor testing establishes the relationship between moisture content and dry density under a defined compactive effort, including maximum dry density and optimum moisture content.
Service overview
Calicore performs Standard Proctor testing to determine maximum dry density and optimum moisture content for suitable soils and aggregate materials. Results support grading, trench backfill, building pads, and controlled thermal testing.
The governing method, oversize correction, sample quantity, and material preparation requirements should be confirmed before shipment or collection.
Step by step
The exact scope is matched to the project, but a typical assignment follows these steps.
We review the specification and verify that Standard Proctor, rather than Modified Proctor, is the required reference.
The source material, maximum particle size, available mass, reuse procedure, and any oversize correction are confirmed before testing.
Separate points are prepared and compacted in the standard mold, then measured for wet density and water content.
Dry-density points are plotted to determine maximum dry density and optimum moisture content under the selected method.
Review criteria
The laboratory curve establishes a reference; it does not prove that field fill was placed or compacted correctly.
What you receive
Common project needs
Frequently asked
Modified Proctor applies substantially greater compactive effort. Calicore currently offers Standard Proctor testing; project specifications should be checked before ordering.
Quantity depends on maximum particle size, reuse of material, and the selected method. Contact the laboratory before shipping.
Request a proposal
Send a short description of the work, any plans, specifications, or photographs you have, and tell us what you need the service to provide. Include a project location if it applies.
Request a proposal