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Subgrade moisture variations interim report IX Effectiveness of existing highway designs
(1970-5)
The purpose of this study was to determine which existing Oklahoma highway designs give acceptable performance and why/how they resist the effects of subgrade moisture variations. After a review of pertinent factors to be ...
Subgrade moisture variations interim report VIII Evaluation of collected data 1966-1969
(1970-6)
A prime objective of this research is to related measured moisture changes to soil, climate, and pavement behavior in Oklahoma. Previous interim reports have described operational methodology, procedures for collection and ...
Subgrade moisture variations interim report II Access Tube Installation
A method for field installation of access tubes for nuclear depth moisture and density equipment is described. After review of previous installation methods, it was concluded that a special drilling unit was required to ...
Subgrade moisture variations interim report IV Suggested nuclear depth gage calibration procedures
(1968-1)
An experimental procedure for calibration of nuclear depth moisture and density gages is described. Calibration of the gages was accomplished utilizing laboratory standards constructed of native Oklahoma soils. The soil ...