ASTM International

Standard Practice for Laboratory Preparation of Chemically Grouted Soil Specimens for Obtaining Engineering Parameters
 N D4320/D4320M

Annotation

This practice covers the laboratory preparation of chemically grouted soil specimens for use in laboratory tests to determine engineering parameters.

NOTE 1—This practice may not be applicable to grout mixtures with gel times shorter than the time required to saturate the specimen with grout.

The specimens are intended for both strength and modulus determination in unconfined and confined compression testing.

NOTE 2—Preparation methods for specimens to be used for other purposes are described in Test Methods D4219 and D5202.

This practice requires the injection of grout into soil specimens already fabricated to a desired density.

All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D6026.

The method used to specify how data are collected, calculated, or recorded in this standard is not directly related to the accuracy to which the data can be applied in design or other uses, or both. How one applies the results obtained using this standard is beyond its scope.

The values stated in either SI units or inch-pound units [presented in brackets] are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

The gravitational system of inch-pound units is used when dealing with inch-pound units. In this system, the pound (lbf) represents a unit of force (weight), while the unit for mass is slugs. The slug unit is not given, unless dynamic (F = ma) calculations are involved.