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Title: Frost action predictive techniques for roads and airfields : a comprehensive survey of research findings
Authors: United States. Federal Aviation Administration.
United States. Federal Highway Administration.
Johnson, T. C. (Thaddeus C.)
Berg, Richard L.
Chamberlain, Edwin J.
Cole, David M.
Keywords: Airfields
Frost action
Frost heave
Frost heaving
Frost heave models
Frost-susceptibility tests
Frozen soil
Frozen ground
Pavement design
Resilient modulus
Thaw weakening
Publisher: Cold Regions Research and Engineering Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: CRREL report ; 86-18.
Description: CRREL Report
Abstract: Findings from a six-year field and laboratory program of frost-action research in four areas are summarized. Research on the first topic, frost-susceptibility index tests, led to selection of the Corps of Engineers frost design soil classification system as a useful method at the simplest level of testing. At a much more complex level, a new freezing test combined with a CBR test after thawing is recommended as an index of susceptibility to both frost heave and thaw weakening. Under the second topic, a soil column and dual gamma system were developed and applied to obtain soil data used in improving and validating a mathematical model of frost heave, the objective of the third topic. The model was effectively improved, a probabilistic component was added, and it was successfully tested against field and laboratory measurements of frost heave. A thaw consolidation algorithm was added, which was shown to be useful in predicting the seasonal variation in resilient modulus of granular soils, the objective of the fourth topic. A laboratory testing procedure was developed for assessing the resilient modulus of thawed soil at various stages of the recovery process, as a function of the applied stress and the soil moisture tension, which increases as the soil gradually desaturates during recovery. The procedure was validated by analyzing deflections measured on pavements by a falling-weight deflectometer. Frame-works for implementing findings from the principal research topics are outlined.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:CRREL Report

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