Work Item
ASTM WK70864

New Test Method for Measuring Elastic Target Modulus Using Light Weight Deflectometer on Laboratory Compaction Characteristic Samples

1. Scope

This test method covers the determination of relationship between moisture content and elastic modulus of unbound granular material using the Light Weight Deflectometer (LWD) on laboratory compaction samples.


Portable Impulse Plate Load; Portable Falling Weight Deflectometer (PFWD); pavement foundation layer; structure foundation layer; Quality Assurance (QA); Nondestructive Testing (NDT); load-deflection testing; layer elastic modulus; layer stiffness; layer deflection


This test method covers determination of stiffness or elastic modulus of unbound materials based on acquiring deflection measurements on laboratory compaction samples. The target values are determined by acquiring LWD measurements on laboratory compaction samples (referred to as Proctor tests) of the unbound materials. This method covers determining these target moduli by comparing the compaction moisture-density characteristics from standard laboratory compaction measurements in order to optimize the uniformity of compaction and strength condition of the unbound layers.

The title and scope are in draft form and are under development within this ASTM Committee.


Developed by Subcommittee: E17.41

Committee: E17

Staff Manager: David Lee

Work Item Status

Date Initiated: 12-03-2019

Technical Contact: Stan Smith