RCTAL501 -ATTERBERG LIMITS TEST
Introduction
This module describes the skills, knowledge and attitudes required to perform Atterberg
limit test. At the end of this module, participants will be able to prepare for works,
determine the moisture content at which the soil passes from the liquid state to the plastic
state, determine the moisture content at which the soil becomes too dry be plastic and
interpret results.
The Atterberg limits test is a classification test used to determine the moisture content at
which fine-grained clay and silt soils transition between the different phases. The test for
Atterberg limits is performed on the fraction of soil that will pass through a No. 40 or 425µm
or 0.425mm sieve as per ASTM D 4318-00.