UNLIMITED FREE ACCESS TO THE WORLD'S BEST IDEAS

close
Already an Engineering360 user? Log in.

This is embarrasing...

An error occurred while processing the form. Please try again in a few minutes.

Customize Your Engineering360 Experience

close
Privacy Policy

This is embarrasing...

An error occurred while processing the form. Please try again in a few minutes.

ASTM International - ASTM D4221-99

Standard Test Method for Dispersive Characteristics of Clay Soil by Double Hydrometer

inactive
Buy Now
Organization: ASTM International
Publication Date: 10 June 1999
Status: inactive
Page Count: 3
ICS Code (Mineral materials and products): 91.100.15
scope:

1.1 This test method, when used in conjunction with a test performed by Method D422 on a duplicate soil sample, provides an indication of the natural dispersive characteristics of clay soils (1).

1.2 This test method is applicable only to soils with a plasticity index greater than 4 as determined in accordance with Method D4318 and more than 12% of the soil fraction finer than 5-[mu]m as determined in accordance with Method D422 (2).

1.3 This test method is similar to Method D422, except that this method covers the determination of percent of soil particles smaller than 5-[mu]m in diameter in a soil-water suspension without mechanical agitation and to which no dispersing agent has been added.

1.4 The amount of particles smaller than 5-[mu]m determined by this method compared with the total amount of particles smaller than 5-[mu]m determined by Method D422 is a measure of the dispersive characteristics of the soil.

1.5 This test method may not identify all dispersive clay soils.

1.6 This standard does not purport to address the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Document History

January 1, 2018
Standard Test Method for Dispersive Characteristics of Clay Soil by Double Hydrometer
1.1 This test method provides an indication of the natural dispersive characteristics of clay soils by comparing the amount of particles finer than 2-μm as determined by this method compared to the...
July 1, 2017
Standard Test Method for Dispersive Characteristics of Clay Soil by Double Hydrometer
1.1 This test method provides an indication of the natural dispersive characteristics of clay soils by comparing the amount of particles finer than 2-μm as determined by this method compared to the...
March 1, 2011
Standard Test Method for Dispersive Characteristics of Clay Soil by Double Hydrometer
1.1 This test method, when used in conjunction with a test performed by Test Method D422 on a duplicate soil sample, provides an indication of the natural dispersive characteristics of clay soils...
June 1, 2005
Standard Test Method for Dispersive Characteristics of Clay Soil by Double Hydrometer
Dispersive clays are those which normally deflocculate when exposed to water of low-salt concentration, the opposite of aggregated clays that would remain flocculated in the same soil-water system...
ASTM D4221-99
June 10, 1999
Standard Test Method for Dispersive Characteristics of Clay Soil by Double Hydrometer
1.1 This test method, when used in conjunction with a test performed by Method D422 on a duplicate soil sample, provides an indication of the natural dispersive characteristics of clay soils (1)....
Advertisement