Figure 2. Normalized slump versus water content for several dredged materials

ERDC TN-DOER-D1

August 2004

A set of correlation curves may be generated for

any particular dredged material. The slump test

method then becomes useful for monitoring

changes in the remolded material properties either

in the field or in the laboratory, based on the pre-

generated curves. As an example, the engineering

behavior properties of shear strength and self-

weight consolidation stress may be monitored

using a pre-generated slump test curve correlated

to shear strength and consolidation. By conducting

a series of simple slump tests and generating a

function curve for a parameter such as water con-

tent (or void ratio, bulk density, solids content,

etc.), the curve may be compared with another

function containing the common parameter. Sub-

sequent remolded material monitoring for chang-

ing shear strength or effective stress requires only

a single slump test.

PREDICTING

UNKNOWN

MATERIAL

INDEX PROPERTIES: Correlations useful for

Figure 3. Plot of vane shear strength as a

function of water content and liquid limit predicting unknown index properties were derived

LL for Pascagoula Harbor material (to

from experimental geotechnical data collected

convert kPa to pounds per square foot

from geographically diverse fine-grained dredged

(psf), multiply kPa by 20.8)