ASTM D4318 Standard Test Methods for Liquid Limit, Plastic Limit and Plasticity Index of Soils -- eLearning Course

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Price: $115
About the Series

ASTM's Construction Materials Technician Series enables QA/QC technicians in the construction industry to advance their skills using leading, self-guided, computer-based training. The series is ideal for those preparing to become certified testing technicians through the American Concrete Institute (ACI), National Institute for Certification in Engineering Technologies (NICET), or a state agency such as the Department of Transportation (DOT).

Each course includes:

  • Self-guided training complete with video demonstrations, checklists, concept presentations, data sheets and glossaries
  • Quiz with automatic grading
  • Certificate upon successful completion of course and passing score on quiz.

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All ASTM online courses are available by subscription on ASTM's Learning Center. The Learning Center provides advanced features that let you set up learning plans, track learning progress and compliance, and run reports.

About the Course

These test methods cover the determination of the liquid limit, plastic limit, and the plasticity index of soils.

Two methods for preparing test specimens are provided: wet preparation method and dry preparation method.

Learning Outcomes

By the end of this course, you will be able to:

  • List the recommendations and considerations for interferences in these test methods.
  • Describe the apparatus and related components to determine the liquid limit, plastic limit, and the plasticity of soils.
  • Recall the sampling and specimen requirements in accordance with ASTM standards.
  • List the steps for verification of apparatus, including inspection of wear on specific pointsof the liquid limit device.
  • Describe the preparation procedures for test specimens, including preparation of plastic limit test specimen.
  • Recall the procedures for Liquid Limit Method A, Liquid Limit Method B, and for Plastic Limit.
  • Identify the calculations for Liquid Limit Method A, Liquid Limit Method B, Plastic Limit, and Plasticity Index.
  • Identify the information to be recorded for the report.


Anyone who runs the D4318 test method or who needs an understanding of the test method and how it is properly run.

Course Content

  • Introduction
  • Demonstration Videos
  • Procedural Outlines
  • Glossary
  • Data Sheet
  • Quiz
  • Video
  • Referenced Materials
  • Certificate

CEUs and Certificate

CEUs: .1 or 1 PDH

Certificate: A certificate is available upon successful completion of the course and an 80% or higher score on the exam.

Reference Materials Included

ASTM D4318

Certificate Program

This training course is part of the following certificate programs:


1 year online subscription for a Single User Only via username/password. Requires internet access.

For pricing for Multi-User access or for more information, please contact sales here or call 1-877-909-ASTM.

Technology Requirements

For a list of technology requirements for accessing ASTM Training please click here.