METHOD OF TESTS FOR LIQUID LIMIT, PLASTIC LIMIT, …：液限塑限试验方法，….pdf

California Test 204
STATE OF CALIFORNIA—BUSINESS, TRANSPORTATION AND HOUSING AGENCY June 2010
DEPARTMENT OF TRANSPORTATION
DIVISION OF ENGINEERING SERVICES
Transportation Laboratory
5900 Folsom Blvd.
Sacramento, California 95819-4612
METHOD OF TESTS FOR LIQUID LIMIT, PLASTIC LIMIT,
AND PLASTICITY INDEX OF SOILS
A. SCOPE

This test method describes the procedures for determining the liquid limit, plastic limit, and
plasticity index of a soil including cement or lime treated soils.

B. REFERENCES:

California Test 226 – Determination of moisture content by Oven Drying
AASHTO T 87 – Dry Preparation of Disturbed Soil and Soil Aggregate Samples for Test
AASHTO T 89 – Determining the Liquid Limit of Soils
AASHTO T 90 – Determining the Plastic Limit and Plasticity Index of Soils

C. APPARATUS

1. Dish: porcelain evaporating dish or similar mixing dish approximately 115 mm in
diameter.

2. Spatula: spatula or pill knife having a blade about 75 mm to 100 mm in length
and about 20 mm in width.

3. Containers: suitable containers made of material resistant to corrosion and not
subject to change in weight or disintegration on repeated heating and cooling.
Containers must have close-fitting lids to prevent loss of moisture from samples
before initial weight determination and to prevent absorption of moisture from
the atmosphere following drying and before final weight determination. One
container is needed for each moisture content determination.

4. Balance: the balance must have sufficient capacity, be accurate to g or
%, and readable and sensitive to g.

5.