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Title: In situ evaluation of unsurfaced portland cement-stabilized soil airfields
Authors: United States. Air Force Civil Engineer Support Agency.
Griffin, Jonathon R.
Tingle, Jeb S.
Keywords: Full-scale testing
In situ evaluation
Material characterization
Performance prediction
Simulated live aircraft loading
Stabilized soil
Unsurfaced airfield
Publisher: Geotechnical and Structures Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: ERDC/GSL TR ; 09-20.
Description: Technical Report
Abstract: The U.S. Army Engineer Research and Development Center (ERDC) was tasked to develop a method for the in situ evaluation of unsurfaced Portland cement-stabilized soil airfields. The ability of portable in situ strength and stiffness measuring devices to determine the material properties of stabilized soils was investigated using the Clegg hammer, dynamic cone penetrometer, soil stiffness gauge, port-able falling-weight deflectometer, and portable seismic property analyzer. Regression and correlation analyses were performed to develop relationships between the in situ test device measurements and the unconfined compressive strength, modulus of rupture, repeated-load elastic modulus, and falling-weight deflectometer backcalculated elastic modulus of representative materials. Relation-ships proposed in previous studies were found ineffective, and a precise relationship for the determination of cement-stabilized soil material properties was not discovered. As a result of this study, it has been determined that further research is required for the development of an accurate cement-stabilized soil performance model.
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